What symptom does human body lack potassium
summary
The electrolyte in the human body is balanced, so that we can safely exist. The severity of clinical manifestations of potassium deficiency depends on the degree of potassium deficiency inside and outside the cell and the rate of occurrence of potassium deficiency. We should all know that the symptoms of acute hypokalemia are more serious than those of chronic hypokalemia with the same level of potassium deficiency. What symptom does human body lack lithium tell everybody.
What symptom does human body lack potassium
First, the common symptoms of neuromuscular system are myasthenia and paroxysmal soft paralysis, the latter can have myasthenia before attack. Although the seizure is related to the absolute level of plasma [k], it is more closely related to the intracellular and extracellular [k] gradient. The greater the gradient, the greater the difference between resting potential and threshold potential, resulting in the decrease of muscle excitability. Paralysis may also occur when plasma [k] is elevated. The most common muscle involved was the limbs. The head and neck muscles were not involved, but the respiratory muscles were involved and dyspnea occurred. Before the attack, there may be numbness in the limbs, then fatigue, and finally autonomous activities completely disappear. Generally, the symptoms of proximal muscles are milder than those of distal muscles. Patients can not stand, walk, sit or squat can not stand up, lighter reliable hand support reluctantly stand up, sleep in bed can not turn over. Also can produce painful convulsion or hand and foot convulsion. Most of the central nervous system is normal, conscious, and may have mental symptoms such as apathy, depression, sleepiness, memory and disorientation, etc. The superficial nerve reflex was weakened or disappeared completely, but the deep tendon reflex and abdominal wall reflex were less affected.
Secondly, hypokalemia of cardiovascular system can reduce myocardial stress and lead to various arrhythmias and conduction block. Mild patients have sinus tachycardia, atrial or ventricular premature contraction, atrioventricular block; severe patients have paroxysmal atrial or ventricular tachycardia, even ventricular fibrillation. Lack of potassium can add digitalis and antimony poisoning, can lead to death. Peripheral blood vessels dilate, blood pressure can be reduced; decreased myocardial tension can lead to heart enlargement, severe heart failure. ECG changes have been described in pathophysiology. The presence of U wave in EKG often indicates that the loss of potassium in the body is at least 500 mmol / L.
Third: urinary system long-term low potassium can make renal tubule damage and cause potassium deficiency nephropathy. The function of renal tubular concentration, ammonia synthesis, hydrogen secretion and Cl - reabsorption can be decreased or enhanced. The function of sodium excretion or reabsorption can also be decreased. The net result can lead to metabolic hypokalemia and hypochlorotic alkalosis.
matters needing attention
The lack of potassium in digestive system can slow down the intestinal peristalsis. Mild potassium deficiency can only cause anorexia, abdominal distension, nausea and constipation; severe potassium deficiency can cause paralytic ileus.
