![]() That is the diastolic pressure (such as 120/80). The first knocking sound (Korotkoff) is the Sphygmomanometer while listening with the stethoscope. Then release air from theĬuff at a rate of 2 to 3 millimeters per second. Quickly inflate the cuff to 30mmHg more that the patient's previous systolic pressure. The stethoscope's chestpiece should be lightly placed over the brachial artery, Place the cuff's lower edge one inch above the antecubital fossa and wrap it around the upper arm. If the subject is anxious, wait a few minutes before takingīegin by selecting blood pressure cuff with the correct size for the patient's arm. You can also take blood pressure when the patient is supine. The arm should be supported and flexed a little. Place the elbow as the same height as the heart. There are mercury, aneroid (a mechanical dial) and digital blood pressure cuffs.ĭigital cuffs are automated while mercury and aneroid cuffs are used manually with a stethoscope.Ĭommonly you will take the patient's blood pressure with the patient seated. This pressure when the blood flow sounds stop indicates the diastolic pressure. When the cuff's air pressure falls below the patient's arterial diastolic pressure, the sounds stop. When these sounds are initially heard, the doctor or nurse makes a note of the cuff's air pressure value.Īs the cuff's air is continued to be released, the blood turbulence sounds continue to be heard. This creates blood flow turbulence and can be heard with the stethoscope. When the cuff's pressure equals the arterial systolic pressure, blood begins to flow past the cuff. No sounds are heard with the stethoscope.Īs the value is opened, pressure slowly diminishes. The cuff is initially inflated well above expected systolic pressure.Īt this time, blood flow is stopped. When taking blood pressure, a stethoscope is positioned to listened to blood flow turbulence. The diastolic pressure is the low blood pressure point. The high pressure point is the systolic pressure and is followed by a decrease in pressure. The patient's systolic and diastolic pressure are indicated on theĮach heart beat creates a rise and fall of arterial pressure as blood surges in the arteries. The cuff, containingĪn inflatable rubber bladder, is placed around the arm and inflated by hand pump.Īs the pressure inside decreases with the release valve, arterial blood flow sounds are Taking a blood pressure reading with a sphygmomanometer is an easy process. Explore our comprehensive blood pressure pages to gain a better understanding of cuff use, proper technique for taking readings,Īs well as practice drills and engaging case studies.
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