The following are the symptoms of potassium deficiency in the body:

1. The neuromuscular system manifests as stress reduction in nerves and muscles. When serum K+ is less than 3.0mmol/L, weakness in the muscles of the limbs may occur. When it is lower than 2.5mmol/L, paralysis may occur, with the muscles of the limbs being the most prominent, and tendon reflexes being slow or disappearing. When the respiratory muscles are affected, it can cause difficulty breathing.

2. Potassium deficiency in the digestive system can cause weakened intestinal peristalsis. In mild cases, there will be loss of appetite, nausea, and constipation. Severe hypokalemia can cause abdominal distension and paralytic intestinal obstruction.

3. When the cardiovascular system is hypokalemic, the excitability of the myocardium is generally increased, and palpitations and arrhythmia may occur. In severe cases, atrioventricular block, ventricular tachycardia, and ventricular fibrillation may occur, and finally the heart will stop beating in a systolic state. In addition, it can also cause myocardial tone to decrease, heart enlargement, peripheral blood vessel dilation, blood pressure decrease, etc.

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