Which electrolyte is responsible for spastic muscle spasms in a client with malabsorption syndrome?

Calcium is the electrolyte responsible for spastic muscle spasms, particularly in cases of malabsorption syndrome. When there is inadequate absorption of nutrients in the intestines, calcium levels in the body can drop, leading to a condition known as hypocalcemia. This deficiency can disrupt normal neuromuscular function and result in increased excitability of the muscle fibers, which manifests as muscle spasms or tetany.

In the context of malabsorption, factors such as the improper absorption of dietary calcium or vitamin D, which is essential for calcium metabolism and absorption, contribute to this deficiency. As a result, the body may react with involuntary muscle contractions, highlighting the critical role calcium plays in muscle physiology and contraction processes.