What are the symptoms of low potassium in the elderly?

Hypokalemia is relatively common among elderly individuals, primarily caused by insufficient dietary intake, medication effects (such as diuretics), abnormal renal excretion, and other factors. Common symptoms include: 1. Muscle weakness: Potassium deficiency can lead to weakened muscle contractions, causing difficulty walking, increased risk of falling, and other related symptoms. In severe cases, even the respiratory muscles may be affected, leading to difficulty breathing. 2. Arrhythmias: Hypokalemia can affect the electrophysiological activity of the heart, causing arrhythmias such as bradycardia, palpitations, chest tightness, and, in severe cases, cardiac arrest. 3. Gastrointestinal symptoms: Low potassium levels can cause dysfunction of the digestive system in elderly individuals, resulting in symptoms such as decreased appetite, indigestion, abdominal distension, and acid reflux. 4. Neurological symptoms: These include memory impairment, difficulty concentrating, slowed reaction time, drowsiness, and, in some cases, depression, confusion, and hallucinations. 5. Other symptoms: Kidney dysfunction and disturbances in acid-base balance may also occur. For elderly patients exhibiting the above symptoms, especially those with chronic diseases or a history of long-term medication use, hypokalemia should be considered and prompt medical evaluation is necessary.