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Why does hyperkalemia cause muscle weakness

A 45-year-old member asked:
Dr. Kathryn Mosher
19 years experience Physical Medicine and Rehabilitation
Dysfunction: It interferes with the muscles ability to contract because it alters the electrolyte balance across the muscle memberane. You have to have the right b ... Read More
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A 55-year-old member asked:
Dr. Kevin Griffiths
Specializes in Nephrology and Dialysis
Hypo: Potassium is needed to help muscle function. Without enough potassium, there is a change in the conduction of cells within a muscle. This change can ... Read More
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A 56-year-old member asked:
Dr. Dariush Saghafi
32 years experience Neurology
Potassium critical: Potassium is a very integral part of the muscle contraction process. It is also extremely sensitive to being in too high or too low a concentration. I ... Read More
A 80-year-old female asked:
Dr. Liawaty Ho
22 years experience Hematology and Oncology
MCV and anemia: Mcv or mean corpuscular volume is a measure of red blood cell volume. We use MCV to differentiate types of anemia- low volume ( microcytic), normal ( ... Read More
A 35-year-old member asked:
Dr. Philip Rosenblum
27 years experience Family Medicine
Tough one: There are several categories of possibilities: viral illness, statin cholesterol medications, diabetes(high or low glucose) low thyroid, muscular dyst ... Read More
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5 thanks
A 51-year-old member asked:
Dr. Jay Rosenfeld
31 years experience Physical Medicine and Rehabilitation
So many things: There are so many things that could produce these very non specific symptoms. It really would not be responsible for me to list them here. It would be ... Read More
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A 28-year-old female asked:
Dr. David Sherer
36 years experience Anesthesiology
Usually: Children should not be displaying muscle weakness. There is often a cause. See a pediatric neurologist for the best diagnosis.
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A 49-year-old member asked:
Dr. Matthew Kozminski
15 years experience Neurology
I could possibly: Generate a very large list of medical conditions that may lead to these types of symptoms. It is best to speak with your doctor and start with a basi ... Read More
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A 40-year-old member asked:
Dr. Larry Armstrong
26 years experience Neurosurgery
Many: The workup would start with metabolic tests, thyroid function tests, serum chemistries, blood counts, and could progress to electromyograms, nerve con ... Read More
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A 49-year-old member asked:
Dr. Felix Brizuela
31 years experience Neurology
Muscles need lytes: Your muscles and nerves require potassium to properly contract and relax. If low, they don't work as efficiently
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2 thanks

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