A pressure ulcer is an irregularly shaped, depressed area that results from necrosis of the epidermis and/or dermis layers of the skin. Prolonged pressure causes inadequate circulation, ischemic ulceration, and tissue breakdown. Bedsores can develop quickly and are often difficult to treat. Hence prevention is the best way to avert the damage from occurring. The study aimed to identify patients at risk for developing a pressure ulcer and find the effectiveness of prophylactic dressing in the prevention of pressure ulcers. A quasi-experimental research design was used with the sample size being 100 (50 in experimental and 50 in the control group). The samples were patients admitted in the ICU who were at a high risk of developing a pressure ulcer. Tools used for the study were demographic tool and pressure ulcer risk assessment sheet (Braden scale). The prophylactic foam dressing was used in the pressure ulcer prone area i.e) on the sacral region and heel of the feet on the experimental group(N=50) and no prophylactic foam dressing was used on the control group(N=50). Results showed that among the control group,20%(N=10) of the patients developed pressure ulcer whereas among the experimental group only 2%(N=1) of the patients developed pressure ulcer. However, it was identified that the patient who developed pressure ulcer among experimental group was on inotropic support. Hence it is recommended that the prophylactic foam dressing applied on the high-risk patients will help reduce the incidence of pressure ulcer.