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What is the purpose of a back rest in nursing?

According to one study on mechanically ventilated patients, backrest elevations greater than 30 degrees significantly reduce the risk of ventilator-associated pneumonia (VAP). This critical benefit is one of several reasons why understanding what is the purpose of a back rest in nursing is fundamental for patient safety and comfort. In addition to mitigating respiratory risks, backrests are vital for proper body alignment, managing pressure, and facilitating daily activities for bed-bound individuals.