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This is a real situation. Image not to be used in a defamatory context.
Post-operative care. Nurse taking a patient's pulse from their wrist. The pulse is measured by counting the number of times the artery throbs per minute. This corresponds to the number of heart beats per minute. The patient has very recently had surgery. He is wearing a pulse oximeter on his finger. This device, also known as a blood oxygen meter, measures the pulse rate and oxygen concentration of the blood.
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