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неврология

EEG - Electroencephalography

  • brain, EEG,
  • brain, EEG,

    Electroencephalography is a non-invasive method of examining the brain using electrodes on the scalp - a method indispensable in neurology.

Electroencephalography is a non-invasive method of examining the brain using electrodes on the scalp - a method indispensable in neurology.

Here are some key aspects of EEG supported by scientific sources:

  1. EEG basics: EEG measures the voltage potentials arising from current in and around neurons. The technique is versatile and is used in clinical diagnostics, neurorehabilitation, and brain activity studies (Biasiucci, Franceschiello & Murray, 2019)
  2. Application in the diagnosis of epilepsy: EEG is valuable in many aspects of neurology, especially in the diagnosis of epilepsy (Blows, 2002)
  3. History and development: EEG is one of the new diagnostic methods in medicine that has contributed to the understanding of convulsive disorders and the localization of organic disorders in the brain (Low, 1943).
  4. Advanced EEG analysis techniques, such as functional connectivity and network analysis, have expanded the possibilities for using EEG in Alzheimer's disease clinical trials. (van Straaten, Scheltens, Gouw & Stam, 2014).

Additional examples and applications of electroencephalography (EEG):

  1. Hand Movement Identification: important in the development of prosthesis management interfaces for people with neuromuscular diseases or amputated limbs
  2. Examination of Brain Pathologies: EEG is used to detect and localize brain lesions, study epilepsy, diagnose psychiatric disorders, and monitor and analyze brain responses to sensory stimuli
  3. Exploring Cognitive Processes: applications of EEG include analyzing brain waves to better understand cognitive processes in the brain. This helps not only in the diagnosis of brain disorders, but also in the study of human behavior and emotions 

These examples illustrate the wide range of applications of EEG, from clinical diagnostics to the study of complex cognitive processes and the development of innovative technologies for interfacing with computer interfaces. This method contributes significantly to brain science and neuroscience by providing a deep understanding of the brain's electrical activity and function.

 

In SanaMedic medical centre EEG is conducted by our neurologists. You can book an appointment by phone or via Facebook!

Electromyography (EMG)

neurology, неврология

Electromyography (EMG) is a diagnostic procedure to assess the condition of muscles and the nerve cells that control them (motor neurons). EMG results may reveal nerve dysfunction, muscle dysfunction, or problems with signal transmission from nerve to muscle.

 

Motor neurons transmit electrical signals that cause muscles to contract. In an EMG, tiny devices called electrodes are used to convert these signals into graphs, sounds or digital values, which are then interpreted by a specialist.

During a needle EMG, an electrode inserted directly into a muscle records the electrical activity in that muscle.

Nerve conduction studies, another part of EMG, use electrode stickers placed on the skin (surface electrodes) to measure the speed and strength of signals traveling between two or more points.

For more information about the team of neurologists at SanaMedic Medical Center, visit the services section of our website!

How do you prepare?


Food and medicine
When scheduling an EMG, ask if you should stop taking prescription or over-the-counter medications before the test. If you are taking a medicine called Mestinon (pyridostigmine), you should specifically ask if this medicine should be stopped for the study.

Bathing
Take a shower or bath shortly before the examination to remove oils from your skin. Do not apply lotions or creams before the examination.

Other precautions
The nervous system specialist (neurologist) who performs the EMG will need to know if you have certain diseases. Tell the neurologist and other EMG lab staff if:

  1. you have a pacemaker or other electrical medical device
  2. taking blood thinners
  3. Have haemophilia - a bleeding disorder that causes prolonged bleeding

Before the procedure
You will probably be asked to change into a hospital gown for the procedure and lie on the examination table. To prepare for the examination, the neurologist or technician will place surface electrodes in different locations on your skin depending on where you are experiencing symptoms. Or the neurologist may place needle electrodes in different places depending on your symptoms.

ЕМГ, неврология, emg, neurological examination

During the procedureа

When the study is in progress, the surface electrodes will sometimes transmit a small electric current that you may feel as a prickling or spasm. The needled electrode may cause discomfort or pain, which usually subsides soon after the needle is removed.

During the needle EMG, the neurologist will assess whether there is spontaneous electrical activity when the muscle is at rest - activity that is not present in healthy muscle tissue - and the degree of activity when you gently contract the muscle.

He or she will give you instructions for resting and shortening the muscle at appropriate times. Depending on what muscles and nerves the neurologist is examining, he or she may ask you to change your position during the examination.

If you are concerned about discomfort or pain at any time during the study, you may want to talk to the neurologist about taking a short break.

After the procedure


You may have temporary, minor bruising where the electrode was inserted into the muscle. These bruises should disappear within a few days. If they continue to appear, contact your GP.

Results


The neurologist will interpret the results of your examination and prepare a report. Your primary care physician or the physician who ordered the EMG will discuss the report with you at a follow-up appointment.

Изотчници:

  1. Rubin DI. Needle electromyography: Basic concepts. Handb Clin Neurol. 2019;160:243-256. doi: 10.1016/B978-0-444-64032-1.00016-3. PMID: 31277852.
  2. Dondelinger RM. Electromyography–an overview. Biomed Instrum Technol. 2010 Mar-Apr;44(2):128-31. doi: 10.2345/0899-8205-44.2.128. PMID: 20586391.

Sleep apnoea

  • сънна апнеа

What is sleep apnoea?

сънна апнеа

Sleep apnea (apnea - from Latin for lack of breathing, cessation of breathing) is a common condition characterized by episodes of cessation of breathing during sleep. Breathing stoppages can last from a few seconds to minutes and occur 5 to 30 or more times per hour. After a time , normal breathing returns, and may be accompanied by loud snoring or choking sounds.

Sleep apnea is one of the commonly seen chronic diseases that disturbs sleep 4 or more times a week.

This leads to poor sleep quality and fatigue during the day. Sleep apnea is one of the main causes of sleep deprivation, lack of quality sleep and daytime tiredness and fatigue.

The problem in diagnosing the disease is that it only manifests itself at night, which is why the person often does not know about it. A family member and/or bed partner may notice its first signs.

Sleep apnea often cannot be diagnosed in a routine medical examination. For this purpose, there are special devices that record heart, breathing and brain activity during sleep. The information they accumulate is then relied upon by a specialist who should recommend a further course of treatment.

What are the risk factors andcauses for  sleep apnoea?

Risk factors for obstructive sleep apnea include:

-male gender

-high blood pressure

-obesity

-smoking

-old age

-use of narcotics, sleeping pills or alcohol

-neurological diseases

DIabetes

What are the symptoms ?

Symptoms of obstructive sleep apnea include:

-heavy snoring

-waking accompanied by gasping

-morning headache

Insomnia

daytime sleepiness

-concentration disorders

-high blood pressure difficult to control

сънна апнея

How is sleep apnea diagnosed?

Previously, the main way to diagnose sleep apnea was so-called Polysomnography, which was only performed in the laboratory. In this examination, you sleep overnight in the laboratory, during which time machines are attached to you that monitor organ function, breathing patterns, and leg and arm movements. Advances in medical technology now allow sleep apnea diagnosis to be done entirely at home, without having to leave the comfort and convenience of your home. This is possible with the help of modern portable sleep and breathing disorder screening devices. These devices perform complete respiratory monitoring of vital parameters that indicate the presence of sleep disturbances without having to change your daily routine.

 

Treatment methods for obstructive sleep apnea?

 

Промени в начина на живот:

сънна апнеа

smoking cessation

stopping alcohol use or not drinking alcoholic beverages a few hours before sleep

losing weight

avoid sleeping on your back

Sleep apnea machine treatment:

сънна апнеа

-CPAP mask (Continuous Positive Airway Pressure). This is the most widely used method of treating sleep apnoea (obstructive or central) and involves wearing a mask around the nose during sleep. The mask is connected to a machine that generates pressurized air, thus preventing the airway from closing.

-BPAP mask (Bilevel Positive Airway Pressure - Positive Airway Pressure at two levels) - unlike CPAP, which maintains a constant supply air pressure when you inhale and exhale, BPAP machines send air at a higher pressure when you inhale and at a lower pressure when you exhale. The purpose of this type of treatment is to help weak breathing. Some BPAP machines automatically supply air when they sense that you have not breathed over a certain number of seconds.

oxygen therapy - The machine supplies extra oxygen to your respiratory system while you sleep. This therapy has shown effectiveness in some cases of sleep apnea.

-rTMS (repetitive transcranial magnetic stimulation) Transcranial magnetic stimulation is a new non-invasive method of modulating the activity of the central nervous system. The idea of the method is to achieve an overall improvement of the condition without the use of drugs, but entirely naturally. It is used for insomnia, burnout syndromes, depression, memory and concentration disorders, after strokes and other brain damage.

Сънна апнея

What complications can sleep apnea cause?

Untreated sleep apnea increases the risk for:

The development of high blood pressure, heart attack, stroke, obesity and diabetes;

The development or worsening of heart failure;

The development of cardiac arrhythmias;

Fatigue - due to frequent awakenings at night and can lead to reduced concentration at work or while driving, which can lead to serious accidents

Clinic of Sleep Medicine and Sleep Apnea at SanaMedic Medical Center Varna

The office has state-of-the-art equipment - electro-encephalograph (EEG), electrocardiograph (ECG), electromyograph (EMG), transcranial magnetic modulator (rTMS). сънна апнея

Репетативна Транскраниална Магнитна Стимулация

Transcranial magnetic stimulation (TMS) is a new non-invasive treatment method in which repetitive magnetic pulses are directed to specific areas of the brain. The idea of the method is to use a directed magnetic field in the activation or deactivation of specific areas of the brain. These magnetic pulses pass painlessly through the human skull and reach the brain cells, stimulating them and improving communication between different parts of the brain. When these pulses are repeated at regular intervals - this is known as Repetitive Transcranial Magnetic Stimulation (rTMS). The pulses are produced by placing a magnetic head in the area above the scalp - they are the same as the pulses produced by Nuclear Magnetic Resonance.

Conducting magnetic pulses into the brain probably sounds quite frightening to many of us, and probably also brings up associations from movies with startling shock therapy scenes that look more like torture than real treatment. ( The scene in question is from the movie One Flew Over the Cuckoo's Nest (1975) with Jack Nicholson). BUT we have taken the time for this article to convince you that ТМS has nothing to do with such type of conceptions - it is safe, painless and above all non-invasive method - ie no anesthetics, penetration into the body or recovery time. As a matter of fact, in a large percentage of cases the side effects are significantly less than those when using antidepressants.

Transcranial magnetic stimulation is a good alternative for patients in whom drug treatments are contraindicated or inappropriate because of their side effects, allergies, intolerance or because of pharmacophobia.

 

In what conditions is pTMS applicable?

Transcranial Magnetic Stimulation is a relatively new, non-invasive method used in the treatment of depression and other mental disorders.

High effectiveness is observed in patients with the following diagnoses:

  • Psychiatry:

☑ Treatment of depression;
☑ Anxiety disorders (Obsessive-compulsive disorder, Generalized anxiety disorder, Anxiety-depressive disorder, Stress reactions, etc.);
☑Increased anxiety and insomnia;
☑ Burnout syndrome (occupational exhaustion);
☑  Autism.

  • Neurology:

☑ Ischaemic strokes: appears to be particularly effective
the method of recovery after strokes. In TMS treatment
observed increase in the amplitude of movement of the affected
limbs, improving speech, as may be affected
positively and lesions from ischemic strokes of long duration;
☑ Neuropathic pain
☑ Tinnitus
☑ Migraine

The method also finds application in the treatment of addictions - alcohol, drug, narcotic. It is considered to be among the most advanced forms of treatment for these conditions.

What are the advantages over other methods?

The essential difference in pTMS compared to other methods of brain stimulation (such as electroconvulsive therapy, so-called electroshock therapy) is that transcranial magnetic stimulation is a completely non-invasive method, i.e. the equipment for Transcranial magnetic stimulation functions entirely outside the person's body and no anaesthetic is required, making the procedure very well tolerated and side effects very limited. The other major advantage is that since it is outside the patient's body, there is no recovery time, . As a matter of fact, immediately after the therapy session you can return to your daily activities (this is confirmed by the experience already gained at SanaMedic Medical Center).

 With Transcranial Magnetic Stimulation (TMS) the activity of certain areas of the brain is influenced by passing the magnetic head of a device over the area in question and emitting magnetic pulses with certain characteristics.
When magnetic pulses are applied in series at different frequencies, a lasting effect is induced on the functional activity of the stimulated brain structures.

How does the procedure work?

Before starting a therapeutic course, a preliminary examination by a neurologist is always carried out. Depending on the patient's condition, it is also determined how long the treatment will last. Usually, between 10 and 15 sessions are needed to monitor the results of the treatment. The duration of a session varies between 20 minutes and 1 hour and it is recommended to have sessions 5 days a week. Typically the course lasts from 3 to 6 weeks - of course this period can be shorter or longer depending on how the patient responds.

In some cases 1 session may be enough to notice an effect. But relief usually begins to be seen after the 1st week of treatment.

During the therapy itself, the patient does not experience pain or any other unpleasant sensation. While the treatment lasts, you are placed in a comfortable and soft armchair, where you can relax and quite calmly sink into your own thoughts and forget that you are even in a medical center.

транскраниална магнитна стимулация

How long does the effect last after a successful course?

How long the results would last depends on a number of factors, chief among them:

  • Age
  • Observation of early indications of good susceptibility to treatment
  • The severity of the mental disorder and the symptoms

How long the effect will last varies from patient to patient. There are cases where the patient continues to experience the effects of the treatment a year after its completion, in other cases maintenance sessions are needed at set intervals to avoid a recurrence of symptoms.

What are our observations in MC SanaMedic?

Натрупаната в нашия център от последните  близо 2 години практика в извършването на лечение чрез pTMS confirms the effective yet gentle impact of the method on human health. In established cases of depression, in which antidepressants were the only solution, after starting the course patients refused to take medication as early as 6-7 sessions. Others are cases of panic disorder where the patient experiences fear of being alone and needs a companion to feel calm. After 3-4 weeks, the patient begins to visit the center alone for his therapy session and returns to his normal independent routine. Patients with tinnitus also experience a positive effect, with the result that the noise is noticeably reduced.

Who is pTMS suitable for and what are the risks?

Repetitive Transcranial Magnetic Stimulation is well tolerated by the majority of patients, with side effects being quite rare and a small percentage of patients refusing to continue treatment for this reason.

The most common side effect is a mild headache, which usually subsides after the first sessions. Via pTMS many of the side effects that arise from antidepressant treatments and medication in general can be avoided.

Conducting a pTMS course in appropriate for a wide range of cases and patients. Противопоказания are observed only in the presence of metal elements in the skull area(electrodes, plates) or pacemaker. It is also not suitable for people with epilepsy. For this reason, a preliminary examination by a specialist neurologist is always performed to assess whether the treatment is appropriate and safe.

транскраниална магнитна стимулация

logo Sana Medic Varna

CONTACT US FOR PROFESSIONAL CONSULTATION AND TREATMENT.

tel. 052/608 313
mobile: 0877 868 864

Adress: Varna, "Sofia" No. 5 street

Electromyography (EMG)

емг

Electromyography (EMG) е медицинско изследване, което има за своя цел откриването и диагностицирането на мускулни заболявания и заболявания на периферните нерви. Електромиографията е диагностична процедура, чрез която се прави оценка на  мускулите и нервните клетки, които ги контролират. Тези нервни клетки излъчват електрически импулси, които карат мускулите да се съкращават и отпускат. Чрез ЕМГ тези импулси биват преведени под формата на стойности и графики, които помагат на лекаря да постави диагноза. Електромиографията се извършва с помощта на апарат, наречен електромиограф, чрез който се прави запис на електрическата активност на мускулните клетки, наречен електромиограма.

Приложение на Електромиография (ЕМГ)

Основното клинично приложение на електромиография (ЕМГ) е свързано с установяване причината за признаци и симптоми, които дават индикации за  увреждане на мускулите и нервите. Методът показва, например, каква е целостта на нерва при съмнение за прекъсването му след травма, каква е скоростта на нервната  проводимост –дали тя е нарушена или забавена.

При какви случаи има полза от провеждането на ЕМГ?

Основното клинично приложение на ЕМГ е да се открие какво предизвиква определени признаци и симптоми, които могат да дадат знак за увреждане на мускулите и нервните окончания.

Тези симптоми могат да включват:

-изтръпване

-сковаване

-мускулна слабост;

-мускулни болки, парене или спазми;

-парализа;

-затруднено изпълнение на ежедневни двигателни функции(ходене)

-неволеви мускулни потрепвания (или тикове);

-притъпена чувствителност

ЕМГ се използва при диагностициране на следните заболявания:

– дископатия

– възпалителни процеси (плексити, невралгии)

– заболявания на мускулната система и периферните нерви

– болест на Паркинсон

– мускулна атрофия

– диабетна полиневропатия

– синдром на Карпалния тунел

– тремор

– полиневропатия

– детски паралич

– миастения гравис

– прищипани нерви

Резултатите от (ЕМГ) могат да спомогнат да се определи основната причина за възникнали симптоми, като например:

1.мускулни заболявания — например мускулна дистрофия или полиомиозит;

2.заболявания, засягащи връзката между мускулите и нервите (нервно-мускулните синапси) — миастения гравис;

3.увреждания на нервите извън гръбначния мозък (периферните нерви) — синдром на карпалния тунел, периферни невропатии;

4.заболявания на нервите, които инервират мускулите (моторните неврони) — амиотрофична латерална склероза/болест на двигателния (моторния) неврон или полиомиелит;

5.заболявания, които засягат нервните коренчета (радикулопатии) — дискова херния;

Как протича изследването ЕМГ?

Продължителността на ЕМГ теста е между 30 и 90 минути в зависимост от състоянието, което се изследва и резултатите от него. Пациентът е в легнало или седнало положение

Логичен въпрос на много пациенти е: „ Болезнено ли е изследването?“

Всъщност изследването се състои от 2 части, като те могат да бъдат свързани с различно ниво на дискомфорт, като в повечето случаи се показва добра поносимост сред пациентите – без да се налагат обезболяващи средства. В повечето случаи специалистът ще извърши и двете части на изследването, като има и случай когато само едната е достатъчна. По време на изследването е възможно пациентът да има усещане за изтръпване, потрепване на мускулите или известен дискомфорт

ПЪРВАТА ЧАСТ  представлява изследване на нервната проводимост- Нервите се стимулират в различни точки с помощта на електроди, които се поставят върху кожата на пациента. По този начин те изкуствено се възбуждат, а тяхната активност се измерва и записва.

ВТОРАТА ЧАСТ включва тестване на мускулите- Поставяне на малки игли в мускулите. Тези игли разполагат с микроскопични електроди, които долавят електрическите импулси, подавани от мускулите.

От получените данни при електромиографското и неврографското изследване се дава заключение, което потвърждава или отхвърля дадената диагноза с която е изпратен болния за изследване.

емг електромиография

емг

CONTACT US FOR PROFESSIONAL CONSULTATION AND TREATMENT.

tel. 052/608 313
mobile: 0877 868 864

Adress: Varna, "Sofia" No. 5 street