MUST-KNOW Signs and Symptoms of Shock for the NCLEX®

3 Jan 2025 · 1 min

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In this instructional video segment, the presenter outlines the essential clinical manifestations of shock that nursing students must master for exams and the NCLEX. Shock is defined as a failure of adequate organ perfusion and oxygenation, leading to a cascade of compensatory responses. The speaker describes how the body attempts to maintain oxygen delivery: heart rate rises while blood pressure falls, capillary refill exceeds three seconds, peripheral pulses become weak, and cyanosis may appear. Respiratory rate increases with shallow, “air‑hungry” breathing as the patient seeks more oxygen. Renal output drops (oliguria) and bowel activity diminishes, reflecting reduced perfusion to the kidneys and gastrointestinal tract. These signs collectively signal impaired tissue perfusion and are critical for rapid identification and management of shock in clinical practice.

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Let's walk through some of the key signs and symptoms that you'll need to know about shock for your nursing school exams and the nclex. So shock happens when the organs are not getting the blood flow that they need. This is a perfusion problem. This is an oxygenation problem. Those organs are not getting the blood and the oxygen that they need to function. So you'll see an increase in heart rate and a decrease in blood pressure. The heart rate wants to ramp up to try to get more blood to the organs. Capillary refill will be over three seconds because that perfusion is decreased. Decreased. You'll see decreased peripheral pulses and cyanosis. The respiratory rate will increase as well to try to get more oxygen to the tissues. You'll see more shallow breathing because the patient will just want to they're air hungry. They just want to get more oxygen. The kidneys are going to be unhappy so you'll see a decreased urine output. Same thing with the bowel sounds. The bowels are not going to be happy so they decrease in function.