The main symptoms of potassium deficiency in human body are tachycardia and arrhythmia, muscle weakness, numbness, irritability, nausea, vomiting, diarrhea, hypotension, insanity and psychological indifference.

The main symptoms of potassium in human body are: 1, muscle weakness.

The increase of extracellular [K+] leads to the decrease of resting potential, muscle weakness and even paralysis. It usually appears in the lower limbs and then extends along the trunk to the upper limbs. Respiratory muscles are only involved in rare cases.

2. Arrhythmia

It appears earlier, generally showing a peak of T wave at first, and the QT interval is shortened, then the change of T wave becomes more obvious, the QRS wave widens and the amplitude decreases, and the form of P wave gradually disappears. All these changes make the patient's ECG sinusoidal. Because many high k+ anemia are often accompanied by hypocalcemia, metabolic acidosis and hyponatremia, these conditions also have an impact on ECG changes, so sometimes it is necessary to make a diagnosis by careful analysis.