Banner Image

Information Wellness Blog

Detailed Reviews and Guides about energy and informational health and wellness

October 8, 2026|Editorial

What is Rife Therapy?

If you’re into wellness, chances are you’ve heard about frequency therapy. But what exactly is it, and what are the best ways to use it?

Frequency therapy is an umbrella term for wellness tools that use energy, vibration, and electromagnetic fields. PEMF uses pulsed electromagnetic field technology that’s FDA-cleared for bone healing, Rife delivers selectable programmable frequencies via electrodes or footplates, and OPUS SoundBed offers a physical vibration you can feel.

RIFE Frequency Therapy

Rife machines produce low electromagnetic energy waves (similar to radio waves). The theory behind the machine is that it can stimulate certain frequencies in a person’s body that will cause them to change their rate of vibration. It is said that this can help re-balance and heal the cells of the body.

Elevate: Healing Frequencies for Mind, Body, & Spirit
Enhance your meditation and wellness with the power of RIFE frequencies. Simple and intuitive, the app allows you to choose a frequency set that aligns with your wellness objectives. Explore a variety of healing frequencies including Sine, Square, Pink Noise, and White Noise, designed to replicate the precision of authentic RIFE machine technology for optimal results. Customizable playlists allow you to combine a wide range of frequencies with immersive background music for an enhanced mindfulness experience.

RIFE Frequency Scan

RIFE frequency healing is an alternative treatment that utilizes electromagnetic frequencies to promote health and wellbeing. Inspired by early 20th-century scientist Royal Rife’s theory that every disease has an corresponding electromagnetic frequency, practitioners use devices to generate and direct these frequencies into the body in order to disrupt harmful microorganisms, balance bodily energies, and support natural healing processes. As this therapy becomes part of integrative health strategies it may offer significant advantages when used responsibly.

Dr. Royal Rife created machines that, similar to a swing that goes higher when struck rhythmically, provided radiofrequency electromagnetic fields that tuned in on pathogen resonant frequencies. His microscopes allowed for magnifications far exceeding conventional instruments could achieve, with frequencies designed to “devitalize” or destroy living microbes he claimed were vitalizing or vitalizing. Today many practitioners use frequency-based devices like these in treating conditions including chronic pain, inflammation and other health concerns.

Electromagnetic fields emitting low-level electromagnetic energy are delivered via electrodes or handheld probes held against the skin, in multiple sessions over time. While not meant to replace medical treatment, anecdotal reports and preliminary research indicate they could help promote wellness while managing symptoms associated with digestive conditions and allergies.

There are various devices on the market, ranging from vintage analog models to sophisticated digital units equipped with software for customization and control. While portable units may be suitable for home use, larger “super coil” systems that cost $30,000+ when factoring hardware, software installation/training/support etc are typically only found at established wellness centers or biohacking/longevity clinics that can justify such significant capital investments in premium technology.

If you want to dive deeper into the history, science, and potential of Rife frequencies, my book The Rife Way is an ideal starting point. Not a miracle pitch but rather a detailed investigation of what was discovered, why it became obscure, and what modern wellness seekers can responsibly explore today.

RIFE Frequency Session

The RIFE Frequency Session is a noninvasive, low-level electromagnetic frequency treatment that supports your body’s natural detoxification processes. It works on the theory that everything in nature has a frequency, and that these frequencies influence biological systems – a concept Royal Rife explored decades before modern technology could measure it.

The Rife machine identifies specific pathogenic cells and broadcasts frequencies that resonate with those cells, dismantling them from within without harming healthy cells. Each disease or symptom has its own unique frequency that can be located in Rife’s databases, and our chiropractor uses these to select frequencies during a session at Innately Yours Chiropractic Studio. With electric pads placed on your feet or hands, these frequencies penetrate deep into the skin to identify and eliminate harmful disease-causing agents.

Sound frequencies also support the nervous system in transitioning from fight-or-flight to rest-and-digest mode. They expand your emotional bandwidth, easing anxiety and increasing quality sleep. And they can boost your energy levels, strengthening the foundation for other wellness practices like yoga, meditation, breathwork, and sun exposure.

During your RIFE session, you’ll sit or recline comfortably with the device in your hands or feet. The session lasts between 30-60 minutes, and a staff member remains with you throughout. Our members often pair a RIFE session with a near infrared sauna or the seven-wave light room for an even more deeply relaxing experience.

While RIFE is not a cure-all, many practice members use it to help with Lyme disease symptoms, detoxification support for autoimmune conditions, and overall wellness support. We’ve also seen it provide relief from chronic musculoskeletal pain, and it works beautifully alongside our chiropractic care and other holistic approaches, enhancing your body’s natural healing processes and supporting your wellness journey. Contact us to learn more about how this innovative technology can support your wellness goals.

RIFE Frequency Consultation

No matter what level you compete at, or biohacker you may be, frequency technology could be fascinating to investigate. RIFE frequency machines emit low-energy electromagnetic frequencies that supposedly help harmonize or block unwanted vibrations and may support overall wellness goals.

Some find using noninvasive, drug-free therapies beneficial in relieving pain and inflammation; others employ them to strengthen immunity by targeting harmful microorganisms; still others just enjoy using this noninvasive modality to address their wellness needs.

Rife frequency therapy works on the principle that everything has vibrations and that certain vibrations can excite certain cells, organs or pathogens – including cells, organs and pathogens themselves. If negative vibrations can be targeted towards pathogens to destroy them while positive ones stimulate healthy cells to stimulate natural healing processes within our bodies.

Rife frequency machines emit specific frequencies designed to match the vibrational frequencies of certain disease-causing pathogens. According to theory, these frequencies could destroy these pathogens by breaking apart their molecular structures – similar to how sound waves or wind may damage glass or bridge structures – without harming healthy cells in the process.

Today, we refer to “RIFE devices” as an umbrella term encompassing devices that produce and administer frequencies to the body. Most RIFEs are small and battery-powered; using different applicators such as electrodes, coils or plasma applications to deliver frequencies directly into our bodies.

At its core, the only true way to determine whether this technology is suitable for you is through speaking to a practitioner. They can assist in identifying optimal frequencies for you as well as discuss its benefits within your wellness routine.

Are you curious to experience what RIFE sessions have in store for you? Book an appointment at Soul Link in Stillwater. During your consultation session, you’ll lay back and relax on our vibroacoustic sound-bed to facilitate holistic wellbeing and nervous system support, followed by healing scalar treatments and seasonal herbal tea. Afterward, add on an unhurried full body massage for further stress relief and muscle relaxation.

October 8, 2026|Editorial

Peter Gariaev

Peter Gariaev was a leading scientist in the field of genetic coding. He was a member of the Russian Academy of Sciences and the New York Academy of Sciences. His work was internationally recognized and had a profound impact on contemporary scientific thinking.

Garyaev‘s research led to the development of Wave Genetics and Linguistic-Cymbological Genetics. His discoveries have fundamentally changed the way we look at DNA.

He discovered that DNA has a memory

Gariaev’s work has gained international recognition, and his theories have challenged traditional views of genetic material. His research has led to new approaches to understanding genetic processes and has opened up many avenues for further study in the fields of biophysics and quantum biology.

His work has been published in a number of English-language journals, including the “International Journal of Biophysics”, “Quantum Biology”, and the “Journal of Theoretical Biology”. He is also the author of a book titled “Wave Genome,” which discusses the nature of DNA as a wave function.

He believes that the information in DNA can be accessed by using a spectrometer to measure vibrations of a sample of DNA, similar to the way a spectroscope measures light. The vibrations can then be used to reconstruct the molecule’s three-dimensional structure, revealing the information stored in the nucleus of the cell.

In addition to discovering that DNA has a memory, Garyaev also developed a method for reprogramming DNA to cure diseases. The technique works by transferring information from healthy cells to sick ones, which allows them to heal themselves. The process involves sending a photo of the patient or their family to a computer, which analyzes the spinor spectrum of the image. The computer then sends corrective information to the damaged area, which causes the disease to disappear.

He developed a method for reprogramming DNA

The method for reprogramming DNA is called “Fantomovy efekt DNA” (DNA phantom effect), and it was developed by Garyaev and his team. It involves using the spinor spectrum of healthy photos taken by patients or their relatives to transmit information to DNA molecules in the form of a signal. The DNA then uses this information to cure diseases and injuries, including previously incurable ones.

Garyaev’s work has received international recognition and has expanded the understanding of genetic processes. His theories on wave genetics and the quantum properties of DNA have challenged traditional paradigms and opened new avenues for research in modern biology and biophysics. He has published his research in numerous English-language scientific journals. His work continues to influence the development of contemporary scientific thought.

He developed the Matter-Wave Metabolic Matrix

Peter Gariaev is a renowned scientist who has made significant contributions to the field of genetics and biophysics. He has developed innovative approaches to understanding genetic processes and has challenged traditional paradigms. His international publications continue to influence contemporary scientific thought, especially in the area of quantum biology and biophysics.

His groundbreaking theories on wave genetics have helped to redefine our understanding of genetic information. They suggest that DNA not only stores genetic code, but also transmits it using complex waves and fields. This new approach to gene transmission is referred to as morphogenetic quantum holography.

The Matter-Wave Metabolic Matrix was created by Garyaev to transmit genetic information in a biologically safe manner. It is an energy program that contains a precise combination of frequencies that are matched to a specific person’s needs. The matrix uses this information to heal the body. It works by synchronizing cellular resonance and enhancing the DNA’s ability to transfer genetic information. It can be used to treat many diseases, including cancer and HIV/AIDS. It is also used to help patients recover from traumatic events.

He was a candidate for the 2021 Nobel Prize in Medicine

Despite his many achievements, Garyaev was not able to secure a Nobel Prize in Medicine. This was due to a controversy surrounding the legitimacy of his scientific work. Although he claimed to have a PhD, Gariaev’s real credentials are unclear. He also claims to be a member of the New York Academy of Sciences, which is not associated with the Russian Akademie der Naturwissenschaften.

Throughout his career, Garyaev made numerous contributions to the field of genetics and biophysics. His international publications continue to influence contemporary scientific thought, opening new directions for research in these fields. His groundbreaking theories on wave genetics and the DNA phantom effect challenged traditional views of DNA as a simple genetic carrier, suggesting that it is actually a complex informational system with unique properties.

October 8, 2026|Editorial

Reverse Aging Trials

The latest frontier in measurable age reversal is partial cellular reprogramming. Scientists have developed transcription factors that can reset cells’ biological clocks without modifying their genetic code.

One of these drugs, called ER-100, has recently started human clinical trials for glaucoma—it’s intended to regenerate optic nerve cells and restore sight. But can this approach actually turn back time on our aging bodies?

1. Senolytics

Senescent cells accumulate in the body over time and secrete harmful molecules that contribute to arthritis, osteoporosis, glaucoma, Alzheimer’s disease, and other age-related conditions and afflictions. They also increase susceptibility to infection with pathogens such as COVID-19. Senolytics are drugs that destroy senescent cells, restoring youthful function and eliminating harmful metabolites. A growing number of clinical trials are exploring senolytic compounds that have shown promise in treating age-related diseases and conditions.

Researchers have found that senolytics can significantly reduce symptoms of aging and chronic disease in mouse models. They have also demonstrated that senolytics can extend lifespan, and they are currently evaluating whether these compounds will improve quality of life in human volunteers.

The development of senolytics is challenging because senescent cells can be difficult to distinguish from normal, healthy cells. To identify senolytics, scientists use high-throughput screens to screen compounds against cell populations induced to senescence using various stimuli. These screens are used to identify compounds that kill the senescent cells. However, the results of this kind of testing can be misleading because senolytics may also kill non-senescent cells.

In addition, senescent cells are heterogeneous, and not all types of senescent cells are created equal. For example, some senescent cancer cells become polyploid and acquire stem cell-like properties, self-renewal, and resistance to chemotherapy. These senescent cancer cells are referred to as “tumor-initiating senescence” (TIS). To avoid this problem, scientists are developing methods to better distinguish TIS senescent cells from non-TIS senescent cells.

A recent study showed that the compound navitoclax can bind to senescent cancer cells and kill them without damaging surrounding, normal cells. It was discovered that navitoclax targets the enzyme BRCA1, which is involved in DNA repair and senescence control. This is a promising lead for future senolytics.

In order to advance this approach, researchers need a better understanding of the cellular mechanisms that regulate senescence and senomorphics. They also need to develop ways to improve targeting and minimize off-target effects. For instance, they are looking at antibody-drug conjugates, nanoparticles, and tissue-specific prodrugs to optimize targeting and delivery. Furthermore, they are examining the use of natural plant-based compounds as senolytics. Despite the many challenges, this research holds promise as a paradigm shift in aging and chronic disease treatment.

2. Reprogramming

Reprogramming involves changing the cellular identity of somatic cells to become multipotent stem cells. These cells can then be reprogrammed into different cell types to treat specific conditions and illnesses. This has been achieved in mice, where it is believed to have helped restore the function of certain organs. Reprogramming is a complex process that requires the right set of chemicals, which are usually a combination of transcription factors. This process is used to create induced pluripotent stem cells (iPSCs), which can then be used for research or in therapy. The FDA recently cleared the first human trial of partial reprogramming, in which patients are given drugs to induce the conversion of some of their own cells into iPSCs that are specific to their condition.

The success of reprogramming has opened new avenues for disease modeling, drug development, and regenerative/rejuvenation therapies. For example, reprogramming of fibroblasts has been shown to reduce lung fibrosis in age-accelerated mice, which is associated with the onset of respiratory failure. Reprogramming has also been used to rejuvenate skin and kidneys in older mice, which is thought to be an early indication that this technology can work in humans.

One challenge is that some of the genes needed for reprogramming are expressed at low levels in mature somatic cells. However, researchers have developed a number of approaches to increase the expression of these genes. One method is to use viruses to deliver the reprogramming factors. This has been shown to be effective in converting fibroblasts into iPSCs, but it has not been as successful when used to convert other types of somatic cells.

Another method is to use chemical cocktails to initiate reprogramming. In recent years, this has been used to generate iPSCs from mouse and human fibroblasts. These iPSCs have been shown to have similar properties to embryonic stem cells, but they are generated from a patient’s own cells and therefore can avoid the risk of immunological rejection of transplanted cells.

Direct reprogramming is also being tested in human trials. A recent study showed that direct reprogramming of cardiac fibroblasts into cardiomyocytes could be accomplished with a cocktail of reprogramming factors, including GATA4, TBX5 and a transcription-hyperactive form of MEF2C. In addition, this study showed that reprogramming was accelerated on substrates with nano-topographical cues, such as grooves and nanoparticles.

3. Stem cells

Stem cells are the source of regenerative cells that give rise to specialised cells that replace damaged or worn-out tissue and organs. The ability of stem cells to produce new tissues and organs enables us to repair the damage caused by injury or illness and may prolong life.

Stem cell therapy involves using stem cells to treat a variety of conditions, including osteoarthritis, skin disease and cardiovascular disease. Stem cells can also stimulate the production of growth factors that enhance natural healing processes. These factors can reduce signs of aging, such as wrinkles and age spots, improve cellular energy levels, increase skin elasticity and promote hair growth.

Different types of stem cells have different functions, but all have the capacity to differentiate into specialized cells. Stem cells are able to regenerate and replace damaged tissue and can be used in transplant and regenerative medicine. They are also being used to test the safety and efficacy of drugs in pre-clinical trials.

Scientists are studying naturally occurring stem cells to learn how they function and why they sometimes turn into cancer cells. They are also working to create more powerful regenerative therapies. One such approach involves resetting the cellular “biological clock” by adding specific transcription factors. This technique was pioneered by Japanese researcher Shinya Yamanaka, who won the 2012 Nobel Prize for his work.

Many studies involve embryonic stem cells, which have the potential to become any type of cell in the body. However, there are many ethical concerns about the use of these cells. Scientists are also experimenting with adult stem cells. These can be found in bone marrow, adipose tissue and the skin.

Stem cells can be administered to patients in two ways, either via a systemic injection or locally at the site of a diseased area. In the case of local injections, the supernatant from culturing the stem cells is injected directly into the site of the problem. The injected cells will then migrate to the damaged tissue and repair it. The resulting repair process may help alleviate the symptoms of the disease and prolong the life of the patient.

4. Vaccines

A vaccine is an injection that primes the body’s immune system to attack and destroy disease-causing microbes. Vaccines are among the most effective public health tools, helping to reduce morbidity and mortality from both endemic and emergent diseases. They also provide a powerful model for how a healthy and stable population can fend off disease through the principles of herd immunity.

Vaccines target a particular antigen, or a piece of a pathogen, to stimulate the production of antibodies that attack the specific threat. Then the immune system recognizes and remembers these “memory” antibodies, so that it is ready to quickly respond to a future infection with the same antigen. Vaccines often require boosters, or supplementary doses, to maintain immunity.

The latest vaccines are targeting senescent cells (SC), pro-inflammatory and toxic cells that accumulate in many age-related pathologies, such as atherosclerosis, fibrosis, diabetes and more. These vaccines can remove senescent cells, or induce their reprogramming into pro-growth, repair, or tissue-protective cells. However, determining which SCs to target and how to trigger their reprogramming remain challenging obstacles. One company, Life Biosciences, is developing a cellular-rejuvenation therapy called ER-100, which is the first to get FDA approval to enter clinical trials and test whether it can ameliorate human disease by eradicating senescent cells.

It is not clear how the ER-100 vaccine works, but it targets senescent cells by combining a peptide with a monoclonal antibody that specifically recognizes senescent CD153 cells. The resulting immunotherapy has been shown to attenuate atherosclerotic plaque growth and improve glucose metabolism in mice, and is in early-stage development for use in humans.

Vaccines prepare your body’s immune system to fight infections, and they can do much more. In a study of 3,800 people over age 60, researchers found that shingles vaccine recipients exhibited lower levels of background inflammation and slower molecular aging than those who did not receive the vaccine. The results were consistent even after accounting for health and demographic differences. The results are the strongest evidence to date that vaccination may help support healthier aging, but further studies are needed.

October 8, 2026|Editorial

Scio Bioresonance

The use of electromagnetic frequencies to support the immune system has sparked interest among immunotherapy practitioners and patients. However, the lack of randomized clinical trials and regulatory approvals presents challenges.

Using personal data in frequency-based diagnostics raises privacy concerns and requires strict data security measures. The SCIO device uses personalized frequencies to connect with the client’s energy field, adjusting input frequencies dynamically based on feedback.

Safety

A scio session uses a quantum biofeedback device called the SCIO (Scientific Consciousness Interface Operation system). The therapist will connect it to your head, hands and feet, and the device will send electromagnetic signals. It scans your 9000 frequencies and compares them to a database of healthy patterns. It finds imbalances in the body, such as nutritional deficiencies, allergies, fungi, viruses and other diseases. It also detects toxins and identifies foods that may cause problems. The SCIO device can even identify these issues at a distance, using a sample of hair. It is a safe, non-invasive treatment. It can help people reduce stress levels and improve their health. It can also stimulate the body’s tremendous self-healing capabilities. The process is safe and effective for children, too.

Efficacy

The efficacy of scio bioresonance depends on a number of factors, including the practitioner’s skill and knowledge. For the best results, choose a trained and certified bioresonance practitioner who has a deep understanding of the principles of the therapy. He or she should also be familiar with the medical conditions treated with it and the effects that various frequencies have on the body. The therapist should also understand the body’s electrical system and be able to interpret the information provided by the bioresonance device.

The Quantum SCIO biofeedback device uses energy to find imbalances in the body’s self-regulating systems. It identifies areas of stress and highlights imbalances, allowing the therapist to correct these issues. It’s a great tool for people who want to enhance their performance, productivity, and creativity.

A bioresonance session can help with a variety of health problems, including anxiety, depression, insomnia, and digestive issues. It can also relieve pain, and improve cardiovascular and respiratory health. A good bioresonance practitioner will use the information gathered during your sessions to design a treatment plan and address any concerns. A session can even uncover hidden stresses that may be contributing to the problem.

In just one session, the Quantum SCIO device analyzes more than 65 million bits of information. This is an incredible amount of data that would take months to analyze with conventional methods. In addition, the Quantum SCIO includes the electro acupuncture meridian program, which harmonizes the frequency of acupressure points and meridians. It also has a Trivector system, which analyzes a person’s personal energy field to identify what the body needs to function at its best. It’s a powerful tool that can be used by both new and experienced practitioners.

Standardization

Regulatory developments in markets such as Germany and Australia, where bioresonance equipment has gained CE marking and TGA listing, have further legitimized home care applications and accelerated consumer adoption. This growth is in turn supporting broader integrative medicine trends, creating opportunities for cross-referral among practitioners and expanding the clinical scope of bioresonance therapy.

Leading bioresonance manufacturers have differentiated their offerings by enhancing software capabilities and expanding library of pre-programmed therapeutic protocols. These features have positioned many devices as competitive alternatives to traditional laboratory allergy testing, reducing cost, time, and discomfort while still providing high-fidelity results in a 30-to-45-minute session. The emergence of AI-powered frequency analysis software has further elevated device capabilities, enabling advanced features such as automated calibration and self-diagnostic routines.

During a session, the SCIO device connects to the client’s quantum energy fields using specific personal frequencies (derived from the client’s name, birth date, and location) and adjusting input resonances based on continuous feedback. The system can detect changes in the body’s resonance/reactance pattern within a second and adjust the frequencies accordingly. This enables the SCIO to maintain beneficial settings only as long as they are effective, ensuring that therapies are personalized and efficient.

The device scans the body for nutrient deficiencies, toxic allergens, and imbalanced energetic states that may contribute to future disease manifestation. These findings are used to identify stressors, such as dietary or environmental triggers, and encourage wellness practices that address underlying issues before they manifest into physical symptoms.

The BICOM PS 1000 Polar XT platform offers a comprehensive set of integrated diagnostic and treatment modules, including allergy identification, cellular detoxification, pain management, and more. The underlying technology is based on decades of research in bio-energetic and bioresonance medicine and represents the next evolution of this innovative therapy approach.

Integration of modalities

A specialized device called the SCIO (Scientific Consciousness Interface Operations System) scans and tests your body’s electromagnetic frequencies for imbalances. It then adjusts your body’s energy to correct these imbalances and balance your overall energy levels. The SCIO is a powerful healing tool that can help with a variety of conditions and symptoms. It can also be used as part of an overall wellness program to support your overall health and well-being.

The device scans the body’s 9000 frequencies for weaknesses such as nutritional deficiencies, hormone imbalances, toxins, and allergies. It can also detect and clear harmful patterns such as viruses, bacteria, and fungus. It can also detect emotional issues and determine if they are related to physical ailments.

After the SCIO device scans your frequencies, it sends back the appropriate frequencies to correct the imbalances. It also sets up programs for 72 different modalities, including nutritional therapy, homeopathy, and acupuncture. It can also address a wide range of health issues, such as chronic pain, stress, and immune system weakness.

Once the balancing process is complete, your practitioner can recommend other therapies and lifestyle changes to maintain the results. They may suggest supplements, exercise, or other treatments to promote healing and increase your energy levels. It is important to remember that bioresonance therapy can take time to work, so it’s a good idea to be patient and stay engaged with the treatment.

When choosing a practitioner, look for one with a background in holistic medicine and certification from a reputable organization or institution. You should also consider their years of experience and any specializations that they have. This will ensure that you receive the best possible treatment for your condition.

Prevention

The preventive application of scio bioresonance can help mitigate radiation-related side effects and improve the efficacy of conventional cancer treatments. However, several critical safety and ethical considerations must be addressed before the technology can be integrated into mainstream medical practice. First, bioresonance devices require the collection and analysis of sensitive personal and medical data, which must be regulated and carefully protected. Any potential misuse of this data could have significant consequences for patients, and must be carefully weighed against the benefits of treatment.

In addition, the lack of large-scale clinical trials limits the evidence base for bioresonance therapy in the context of radiation therapy recovery. This uncertainty about the therapy’s efficacy and safety has impeded its adoption by oncologists and radiation therapists, who rely on evidence-based practices. Regulatory challenges also complicate matters, as bioresonance devices are classified differently in different countries. Some treat them as medical devices, while others categorize them as wellness products. This variation in classification has hampered efforts to establish standardized testing protocols for the device.

Another challenge facing bioresonance therapy is the insufficient understanding of the mechanism through which it purportedly affects mental health. Although some studies have shown positive outcomes, critics question the validity of these claims, arguing that the proposed mechanisms are not grounded in established principles of human physiology and electromagnetic theory.

Nevertheless, there is growing interest in the use of bioresonance for mental health treatment. Consumers are increasingly seeking holistic and non-pharmacological approaches to mental health, and the technology’s unique ability to harmonize the body’s energy fields is expected to drive market growth. The integration of bioresonance with traditional mental health techniques is also being explored as a way to enhance treatment results.

October 8, 2026|Editorial

Vibroacoustic Stimulation Fetal

Vibroacoustic stimulation fetal produces changes in fetal heart rate and movement. This may make nonstress tests more effective, but the underlying mechanisms remain unknown.

This Cochrane Review was updated in September 2013. This update includes 12 new trials involving 6822 women. The results of this update showed that acoustic stimulation improved the effectiveness of antepartum non-stress testing.

Background

Vibroacoustic stimulation of the human fetus profoundly alters fetal behaviour and uterine rhythm. There are reports of severe fetal distress following this type of stimulation, resulting in tightening of the nuchal cord, bradycardia and caesarean section (Sherer 1988; Sherer 1991). In addition, there is concern that exposure of the fetus to this kind of sound can induce fetal’startle response’, which is a physiologic reflex to protect the fetus from intrauterine stressors. Despite these concerns, a number of authors have reported success using fetal vibroacoustic stimulation in conjunction with antepartum non-stress cardiotocography tests or other tests of fetal wellbeing and that this improves their predictive reliability.

A fetal startle test has been developed which uses a hand-held probe to apply a low frequency, high intensity vibroacoustic stimulus to the maternal abdomen. It is intended to mimic a fetal kick or a contraction. In one trial, the test was compared with the non-stress cardiotocography test and in the other with a standard fetal movement monitoring device. In both trials, the test was found to be superior to the standard fetal movement monitoring device in detecting reactive uterine tracings and predicting good fetal outcome at delivery.

In a further study of a group of patients with high-risk pregnancies, the sensitivity of the test was compared to a standard fetal heart rate trace and the fetal Apgar score at birth. The sensitivity of the test was 81% and specificity 89%, both of which were significantly improved over that of the fetal heart rate trace alone. Maternal perception of fetal movements in response to the vibration was also tested and found to have a good diagnostic performance (81% sensitivity and 90% specificity).

However, there is a lack of randomised controlled trials relating to important outcomes such as fetal hearing impairment or impaired neurological development, gestation at delivery and maternal satisfaction and anxiety. Randomised trials should be encouraged to evaluate not only the optimum frequency, intensity and duration of fetal vibroacoustic stimuli but also their effectiveness, safety and perinatal outcome in conjunction with cardiotocography and other tests of fetal wellbeing.

Methods

In studies on the use of external vibroacoustic stimulation in labor, varying methods and protocols have been used. Regardless of the method, the fetal response to acoustic stimulation is usually characterized by an acceleration of the fetal heart rate (FHR). A number of investigations have also described changes in fetal movement patterns during this test. The clinical significance of these changes is still unclear.

The ability of acoustic stimulation to elicit a rapid fetal heart rate response may be useful in decreasing the testing time for a biophysical profile and may result in fewer non-reassuring tests. However, the use of acoustic stimuli in human pregnancy has not yet been proven to be effective in reducing the false positive rates associated with nonreactive biophysical profiles.

A study of 435 normal second and third trimester pregnancies was undertaken to examine the effects of vibratory acoustic stimulation (VAS) on fetal movement (FM) and fetal heart rate (FHR). The fetal response to acoustic vibration, including the onset of FHR acceleration, was recorded using real-time ultrasound. A five-second VAS was given and FM and the amplitude of FHR acceleration were assessed.

The sensitivity of the fetal response to vibration was found to be high, and it was not affected by gestational age or maternal weight. The specificity of the test was 89%. In five cases where the fetal heart rate tracings were pathological, stimulation nevertheless produced a fetal movement and outcome was good. This was attributed to the fact that the fetal heart rate response to vibration is not modulated by maternal beta-adrenergic blocking drugs. This is supported by a case report in which chronic oral administration of propranolol was shown to depress the fetal response to vibratory acoustic stimulation in a patient with Marfan’s syndrome with existing aortic dilation.

Results

Vibroacoustic stimulation fetal is an easy to perform bed side test and has been shown to improve the sensitivity and specificity of non-stress tests (NST) for detecting fetal well being in high risk pregnancies. This study is a prospective clinical trial comparing the NST and VAST in 150 patients with high risk pregnancy fulfilling inclusion criteria. Using the VAST the sensitivity and specificity were found to be higher in predicting poor perinatal outcome than the NST alone.

The results from this study indicate that fetal vibroacoustic stimulation is able to elicit FHR accelerations and significantly reduce the false positive rate associated with NST. It can be used as a noninvasive adjunct to NST in antepartum monitoring to enhance the detection of fetal distress and to identify acidemic fetuses. It can also be used to distinguish between a fetus in labour and a fetus that is unwell.

In a previous study, the sound pressure level of the vibratory stimulus was measured in amniotic fluid using a hydrophone placed under the uterus. The sound intensity was found to increase with gestational age, which suggests that a portion of the fetal auditory system has matured by 28 weeks. This explains the higher sensitivity of the fetus to vibration at this stage.

It has also been shown that fetal movements are more reactive to acoustic stimulation at 36-40 weeks of gestation than at earlier gestational ages, suggesting a maturation of the auditory sensory and central nervous system. This explains why the frequency of fetal startle movement and blinking is also higher after VAS at 36-40 weeks of gestation compared with earlier gestational age groups.

The sensitivity, specificity, and positive and negative predictive value of the fetal heart beat pattern obtained by VAS were 94.7%, 94.4%, and 75% respectively, whereas the sensitivity of the NST was only 68.7%, and the specificity was 91.6%. The VAS is therefore a more accurate and reliable fetal assessment tool in identifying high risk pregnancies. Moreover, it can be performed in addition to the NST with good fetal safety and efficiency.

Conclusions

Vibroacoustic stimulation is a simple bed side test that increases the specificity, positive predictive value and reduces the number of nonreassuring tests in high risk pregnancies. It is a valuable addition to NST, especially in fetuses that are unresponsive to NST and those with a low scalp blood pH. However, as with any test, it is important to understand its limitations. In particular, the response to vibroacoustic stimulation can be modulated by maternal medication such as beta-blockers and should be evaluated in those patients.

Fetal movement is inversely related to gestational age, and the ability of vibroacoustic stimulation to elicit fetal movement decreases with increasing gestational age. This may explain the sensitivity of NST to detect fetal movement and highlight the importance of considering gestational age in NST interpretation.

We have investigated the effects of gestational age on fetal heart rate (FHR) responses to vibroacoustic stimulation using a computerized analysis system. Observational data on 3453 pregnant women were collected and evaluated for 10-minute periods of nonstress testing (NST) and vibroacoustic stimulation (VAS). FHR parameters were analyzed according to gestational age. The mean baseline FHR and the percentage acceleration time in the VAS tracings differed significantly by gestational age. The results of this study demonstrate that a relationship exists between gestational age and the amplitude of FHR accelerations during NST and after VAS, which is similar to that observed with other noninvasive techniques.

Fetal responses to vibroacoustic stimulation can elicit periodic and nonperiodic FHR accelerations, decreasing the false positive rate associated with nonreactive nonstress testing. These results suggest that vibroacoustic stimulation has the potential to improve fetal acidosis diagnosis in labor and may be useful for screening and diagnosing fetal malignancy. A large prospective study is necessary to validate the clinical usefulness of this technique.

↑Top
SPOOKY2 PORTABLE ESSENTIAL RIFE GENERATOR KIT