Cardiac PRELOAD Explained and Practice Questions

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Preload in simple terms refers to how stretched the heart muscle is before it contracts. More specifically, it is the amount of blood in the ventricles at the end of diastole, when the heart is relaxed. The more blood returning to the heart, the higher the preload. Less blood returning to the heart means lower preload.

Understanding preload is especially important for nurses because it directly affects cardiac output, the workload on the heart, and the heart’s oxygen demand. When preload is too high, it can lead to fluid overload and pulmonary edema. When preload is too low, there is not enough circulating blood, which can result in hypotension and poor tissue perfusion.

This video breaks down preload in a simple, easy-to-understand way and connects it to real nursing care and exam-style thinking.

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#nursingschool #nursing #nursingeducation

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Cardiology
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