Final answer:
When drawing blood from a patient admitted for cardiac symptoms, the healthcare professional should wrap an inflatable cuff around the patient's arm at the level of the heart, raise pressure by injecting air, and listen for Korotkoff sounds.
Step-by-step explanation:
When drawing blood from a patient admitted for cardiac symptoms, the healthcare professional should follow a specific procedure. They should first wrap an inflatable cuff tightly around the patient's arm at about the level of the heart. Then, they should squeeze a rubber pump to inject air into the cuff, raising pressure around the artery and temporarily cutting off blood flow into the patient's arm. Finally, they should place a stethoscope on the patient's antecubital region and, while gradually allowing air within the cuff to escape, listen for the Korotkoff sounds.