Certified Nurses Operating Room (CNOR) Practice Exam

The acronym CATS, when related to hypocalcemia, refers to a collection of symptoms that indicate the body's response to low calcium levels. Specifically, the components of the acronym are Convulsions, Arrhythmias, Tetany, and Spasms or stridor.

Convulsions are involuntary contractions of muscles and can occur due to increased neuronal excitability caused by low calcium levels. This is a classic manifestation of hypocalcemia, as calcium plays a critical role in neuromuscular function.

Arrhythmias refer to irregular heartbeats that can occur when calcium levels are insufficient, impacting electrical conduction in the heart. Calcium is essential for the normal functioning of the heart muscle and for maintaining a regular heartbeat.

Tetany is a characteristic symptom of hypocalcemia, illustrating increased neuromuscular excitability that leads to sustained muscle contractions, tingling sensations, and spasms.

Spasms or stridor signify the potential for muscle tightening or involuntary contraction, particularly in the airway, which can be critical in severe cases of hypocalcemia. Stridor specifically refers to a high-pitched sound made during breathing, often due to an obstructed airway, which may occur if laryngeal muscles become spasmodic.

This acronym