A nurse is teaching a class about risk factors for heart disease. Which of the following risk factors is modifiable? (Select all that apply)

Choice A reason: Hypertension is linked to stress, diet, or genetics, not directly to crowded living. While crowding may cause stress, its impact on blood pressure is indirect. Sympathetic activation from stress can elevate blood pressure, but crowded environments primarily increase infectious disease risk due to close contact.

Choice B reason: Rheumatoid arthritis is an autoimmune condition driven by genetic and environmental factors, not crowding. Crowded living does not trigger the immune dysregulation or inflammatory cytokine release (e.g., TNF-alpha) characteristic of rheumatoid arthritis, which is unrelated to population density or close contact.

Choice C reason: Deep vein thrombosis results from immobility, hypercoagulability, or vascular injury, not crowding. Crowded living may limit physical activity, but the direct risk is low. Stasis in veins, not close contact, drives clot formation, making this condition unrelated to crowded apartment environments.

Choice D reason: Crowded apartment buildings increase infectious disease risk due to close contact, facilitating transmission of pathogens like influenza or tuberculosis via respiratory droplets or surfaces. Poor ventilation and shared spaces enhance microbial spread, weakening immune defenses and increasing susceptibility to infections in densely populated settings.

Choice A reason: Placing the cuff 5 cm above the antecubital space is incorrect, as the cuff should be positioned 2-3 cm (1 in) above the antecubital fossa to align with the brachial artery. Too high a placement reduces accuracy by misaligning the cuff’s sensor, potentially leading to erroneous blood pressure readings.

Choice B reason: Aligning the cuff’s indicator with the brachial artery ensures accurate measurement, as the artery’s pulsations are detected optimally. Proper alignment maximizes the cuff’s ability to sense arterial pressure changes during systole and diastole, critical for reliable electronic blood pressure readings, making this the correct action for the nurse to take.

Choice C reason: Selecting a cuff that covers 50% of the upper arm is incorrect, as the cuff should cover 80% of the arm’s circumference and 40% of its length for accurate readings. An improperly sized cuff (too small or large) distorts pressure measurements, leading to inaccurate systolic and diastolic values.

Choice D reason: Elevating the arm above heart level lowers blood pressure readings due to gravitational effects, reducing arterial pressure. The arm should be at heart level for accurate measurement, as elevation or lowering skews results, making this an incorrect action for obtaining reliable electronic blood pressure readings.