Which vital sign change might occur in a patient with shock?

A rapid pulse, or tachycardia, is a common physiological response in patients experiencing shock. When the body is in shock, it is failing to provide adequate blood flow and oxygen to vital organs. In response, the heart rate increases as a compensatory mechanism to maintain circulation and improve the delivery of oxygen and nutrients to tissues. This elevated heart rate helps ensure that blood continues to flow, even when blood volume may be compromised or blood pressure is dropping.

In contrast, stable blood pressure may not occur, as shock is often characterized by a declining blood pressure due to reduced circulating volume or heart function. A slowed respiratory rate is not typically associated with shock; instead, patients may exhibit rapid breathing (tachypnea) as their bodies attempt to increase oxygen intake in response to stress. Lastly, a regular heart rhythm may not always be present in shock patients, as they can also experience arrhythmias due to the stress on the heart and changes in electrolyte balance. Thus, the rapid pulse is the expected vital sign change indicative of shock.