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Doctor insights on: Clonus A Series Of Rapid Muscle Contractions

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What are the health consequences of a heart rate of 45-50 BPM during contractions from nuchal cord?

What are the health consequences of a heart rate of 45-50 BPM during contractions from nuchal cord?

Most likely none: It is quite common for infants to experience a slow heart rate during contractions when mother is pushing. However, if the infant is experiencing slow heart rate early in the labor process it may indicate that the baby is compromised. Most infants can tolerate this without long term damage for a short period of time, but ongoing heart rate drops need immediate evaluation. ...Read more

Muscle (Definition)

It is a body tissue that has the ability to contract. It shortens and generates force. It relaxes and returns to its original length. Muscles move joints, stabilize the body, move air and food through the organs, act as valves for bladder, bowel and other organs. They control movement of the eyes. They help us express ourselves by changing the shape of our ...Read more


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Involuntary muscle contractions of the urethra healthy or a problem?

Necessary & healthy: You require involuntary contractions of the urethral sphincter muscles when you cough or sneeze to prevent expulsion of urine from the bladder, ie wetting. ...Read more

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Involuntary muscle contractions within the torso area that causes abnormal breathing?

Diaphragm: If you have started into an aerobic program and notice this pain it could be spasms of the diaphragm. This is a large muscle in thelower torso which can become overworked if just starting on a new aerobic program. If it does not get better over a short time period seek medical help to find out what is going on. ...Read more

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Is muscle fasciculation size/intensity a clue in considering BFS vs ALS onset? I've had intense, large fasciculations in feet and calfs for a week.

Is muscle fasciculation size/intensity a clue in considering BFS vs ALS onset? I've had intense, large fasciculations in feet and calfs for a week.

Not so simple: Fasiculations can be a sign of muscle denervation or simply muscular fatigue. Don't jump to unwarranted conclusions. See if they last and if they do see a good neurologist ...Read more

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With motor neuron disease would the muscle weekness come before the painless muscle twitching when at rest?

With motor neuron disease would the muscle weekness come before the painless muscle twitching when at rest?

Motor neuron disease: There are two types of neuronal loss in motor neuron disease. Upper motor neuron problem causes weakness without fasciculations (muscle twitch). Lower motor neuron involvement may present with fasciculations before any noticeable weaknees. Therefore weakness may come before, during or after the onset of fasciculations. You need to see a neurologist rather than worrying about the disease. ...Read more

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Would a run on non-sustained ventricular tachycardia of 4 beats cause a compensatory pause after?

Would a run on non-sustained ventricular tachycardia of 4 beats cause a compensatory pause after?

Yes: But more important is looking for the reason you may have non-sustained VT. This would require a detailed evaluation by your physician. ...Read more

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Is an orgasm an involuntary muscle contraction of the smooth muscle tissue?

Is an orgasm an involuntary muscle contraction of the smooth muscle tissue?

Sort of: Orgasm is a complex reaction that causes, among other things, certain smooth muscle fibers (vagina/uterus) to have rhythmic contractions. Not every smooth muscle contraction is due to an orgasm. ...Read more

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Are chest muscle spasms a sign of heart attack?

Are chest muscle spasms a sign of heart attack?

Not usually....: A heart attack occurs when there is a decrease in the blood flow to the heart itself. Symptoms of a heart attack include chest pain or pressure that can radiate to the jaw, shortness of breath, sweating, etc. Spasms of the chest wall muscles can happen for many reasons, including after a lot of coughing, and is not usually a sign of a heart attack. If you have chest pain, see your doctor or er! ...Read more

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Involuntary facial muscle spasms a sign of some big problem?

Involuntary facial muscle spasms a sign of some big problem?

Could be: Most likely they are benign and not a sign of a big problem but first determine what is causing the spasms. It could be an indication of serious underlying disease that requires treatment. Central tumors or hormone dysfunction or electrolyte abnormalities are just a few of the causes which should be treated and not ignored. ...Read more

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Is there an iatrogenic or neurological problem that causes pupil contriction and muscle contraction over a long period of time-like months?

Pupil constriction: Is a normal response to a light stimulus. If it is "permanent" as your question suggests, it is evidence of imbalance in the automatic nervous control of the pupil. It is a neurological problem. ...Read more

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What causes smooth muscle contraction and possibly premature labor?

What causes smooth muscle contraction and possibly premature labor?

Three main reasons: 1.) Intrauterine infection 2) Incompetent cervix 3.)A premature drop in hormones causing labor initiation. Of course, there are many more reasons. ...Read more

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What type of class of HTN prescriptions may be an effective way of gently slowing a normal, but slightly quick heart beat, by a few beats a minute?

What type of class of HTN prescriptions may be an effective way of gently slowing a normal, but slightly quick heart beat, by a few beats a minute?

Beta Blockers: Beta blockers would be effective for the outcome you are desiring. Some calcium blockers would be additionally effective but not all of them. Consult with the health care provider managing your blood pressure for advice concerning your specific situation, ...Read more

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What is the mechanism by which smooth, skelatol and cardiac muscle twitch?

Depolarization: When you apply an electric current to any of the above fibers, you cause depolarization, ion flux, and movement of protein filaments resulting in the characteristic "twitch". If you're really interested, check out: http://www.Youtube.Com/watch?V=fduja8rwntk. ...Read more

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Can a PVC "jolt" you (very short, distinct, grabbing feeling) more during exercise due to increased HR? Surge of blood brushing against chest wall?

Can a PVC "jolt" you (very short, distinct, grabbing feeling) more during exercise due to increased HR?  Surge of blood brushing against chest wall?

Actually the jolt: you feel is from the beat after the PVC. There is a pause after the PVC resulting in a longer time for the heart to fill with blood. The recovery beat is then stronger to eject the increased volume. Makes some people cough and feel a grabbing sensation. Normal physiology. If it bothers you a lot ask your health care professional to evaluate and treat the problem. ...Read more

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How to differentiate between infantile spams and other types of infantile seizures and normal jerky movements caused by strong reflexes? Scared!

How to differentiate between infantile spams and other types of infantile seizures and normal jerky movements caused by strong reflexes? Scared!

West Syndrome has: clusters of brief flexor or extensor contractions ( spasms) with a distinct EEG pattern ,often with developmental regression. Baby's neurologist will tell you after evaluation. ~50% have a congenital cause like cortical maldevelopment , metabolic syndromes or genetic syndromes. . Any brain pathology increases risk of Autistic Spectrum Disorder. Tuberous Sclerosis often causes West Sx. & ASD. ...Read more

Contraction (Definition)

This usually has to do with the onset of labor. It is a muscular tightening of the uterus. Contractions are timed from beginning to end of hardening of the uterus (duration) and from beginning of one contraction until the beginning of the next (frequency). A third descriptor is intensity or how hard ...Read more


Dr. Milroy Samuel
54 doctors shared insights

Muscle Contractions (Definition)

When a muscle contracts, it basically shortens. In a skeletal muscle, the shortening of the muscles then pulls on a tendon causing motion to occur ...Read more