Name: manual brachial blood pressure measurement
Uploaded: 2024-06-20T13:03:04.000Z
Duration: 1 min 23 s
Channel: JoVE

Let&#39;s learn the two-step technique for assessing blood pressure using an aneroid sphygmomanometer.
First, perform hand hygiene to avoid cross-infection, identify and explain the procedure to the patient.
Next, secure the cuff one inch above the palpated brachial artery without tightening it, as it may provide a false reading.
To start, palpate the brachial artery and inflate the cuff slowly, noting when the pulse disappears.
Then, continue to inflate the cuff 30mmHg over where the pulse is no longer felt.
Take note of the reading at which the pulse reappears. This estimates systolic pressure.
Now, deflate the cuff quickly and wait one minute, allowing the blood to refill and circulate through the arm.
Place the stethoscope&#39;s diaphragm on the brachial artery and inflate the cuff to 30mmHg above the estimated systolic pressure.
Gradually loosen the valve. Mark the point where the first Korotkoff sound is heard, indicating systolic pressure.
Continue deflating the cuff and note the point when the sound disappears, indicating diastolic pressure.
Finally, remove the cuff, perform hand hygiene, and record the values.

assessment of blood pressure in brachial artery(two-step method)

Assessment of blood pressure in brachial artery(two-step method)

Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An aneroid sphygmomanometer, commonly used in clinical settings, offers a manual and precise method for blood pressure measurement. The technique for using this instrument involves specific steps that must be carefully executed to ensure accuracy. The following detailed description outlines a two-step technique for assessing blood pressure using an aneroid sphygmomanometer, including the rationale for each step.
Initial Preparation: 
<ul>
	<li>&#8226; Begin with hand hygiene to minimize the risk of microbial transmission and cross-infection, a standard precaution for infection control.</li>
	<li>&#8226;&#160;Next, inform the patient about the procedure, which is essential for alleviating anxiety and ensuring their cooperation, both of which can influence blood pressure readings.</li>
</ul>
Cuff Placement:
<ul>
	<li>&#8226;&#160;Properly position the cuff about one inch above where the brachial artery was palpated. Correct placement is vital as it ensures the accuracy of the readings.</li>
	<li>&#8226;&#160;Ensure that the cuff is not too loose or tight. A tight cuff could falsely produce high blood pressure readings by excessively compressing the artery, and a loose cuff shows a falsely low blood pressure reading.</li>
</ul>
Finding the Baseline: 
<ul>
	<li>&#8226;&#160;Palpate the brachial artery again to confirm the best location for the cuff. Begin inflating the cuff while noting when the pulse under the cuff is no longer detectable. This point helps determine how much further to inflate the cuff to ensure complete arterial occlusion.</li>
</ul>
Determining the Maximum Inflation Level: 
<ul>
	<li>&#8226;&#160;Continue inflating the cuff to about 30 mmHg above the point where the pulse disappeared. Ensuring the artery is fully occluded allows for accurate systolic pressure measurement upon cuff deflation.</li>
</ul>
Estimating Systolic Pressure: 
<ul>
	<li>&#8226;&#160;Start deflating the cuff and observe the gauge for the pressure reading at which the pulse reappears.</li>
	<li>&#8226;&#160;It provides an initial estimate of the systolic pressure, guiding the inflation level in subsequent steps for a more precise measurement.</li>
</ul>
Rest Period: 
<ul>
	<li>&#8226;&#160;Fully deflate the cuff and allow the arm to rest for about one minute. This pause is necessary to let the blood flow return to normal in the arm, preventing any residual effects of the previous inflation from influencing the next set of readings.</li>
</ul>
Precise Measurement:
<ul>
	<li>&#8226;&#160;Position the stethoscope&#39;s diaphragm over the brachial artery and re-inflate the cuff to 30 mmHg above the previously estimated systolic pressure. This pre-inflation ensures that the artery is adequately occluded before listening for Korotkoff sounds, crucial for determining systolic and diastolic pressures.</li>
</ul>
Identifying Systolic and Diastolic Pressures: 
<ul>
	<li>&#8226;&#160;Slowly release the cuff&#39;s valve and listen for the first Korotkoff sound, which signifies the systolic pressure.</li>
	<li>&#8226;&#160;Gradually deflate the cuff until the Korotkoff sounds completely disappear, indicating the diastolic pressure. These sounds are critical indicators of the changing blood flow dynamics as the pressure is released.</li>
</ul>
Post-procedure: 
<ul>
	<li>&#8226;&#160;After the measurement, remove the cuff and ensure patient comfort.</li>
	<li>&#8226;&#160;Perform hand hygiene again to ensure safety.</li>
	<li>&#8226;&#160;Promptly record the measured blood pressure values accurately, as these values are essential for patient monitoring and management.</li>
</ul>

Measuring blood pressure is a fundamental skill in healthcare that aids in diagnosing and monitoring hypertension and other cardiovascular conditions. An ...

assessment-of-blood-pressure-in-brachial-arterytwo-step-method

Education

JoVE Core

Nursing

Unit 1

Vital Signs: Blood Pressure

KEY TERMS AND CONCEPTS

manual brachial blood pressure measurement

Manual blood pressure measurement in the brachial artery uses an aner​oid sphygmomanometer and a stethoscope to find systolic and diastolic pressure. This technique is a core clinical skill for checking blood pressure in people with hypertension or other cardiovascular conditions.

The procedure begins with hand hygiene. This lowers the risk of cross-infection. The patient is then told what will happen. Clear explanation helps reduce anxiety and supports cooperation, which can affect the reading.

The cuff is placed about one inch above the palpated brachial artery. Proper cuff position is important for accuracy. The cuff must also fit correctly. A cuff that is too tight can give a falsely high reading, while one that is too loose can give a falsely low reading.

Next, the brachial artery is palpated again to confirm the best cuff site. The cuff is inflated until the pulse under the cuff disappears. It is then inflated about 30 mmHg beyond that point. This ensures the artery is fully occluded before the pressure is measured.

The cuff is slowly deflated to estimate systolic pressure. The reading at which the pulse returns gives the first estimate. The cuff is then fully deflated, and the arm rests for about one minute. This pause allows blood flow to return to normal before the second measurement.

For the precise reading, the stethoscope diaphragm is placed over the brachial artery. The cuff is reinflated to 30 mmHg above the estimated systolic pressure. The valve is then released slowly. The first Korotkoff sound marks systolic pressure, and the point where the sounds disappear marks diastolic pressure.

After the measurement, the cuff is removed and the patient is made comfortable. Hand hygiene is performed again. The blood pressure values are then recorded promptly because they are needed for patient monitoring and care.

Manual Brachial Blood Pressure Measurement

manual-brachial-blood-pressure-measurement

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Blood pressure patterns and imbalances include hypertension, or high blood pressure, and hypotension, or low blood pressure. Both conditions can affect how well blood moves through the body and can signal important health problems. Hypertension is present when blood pressure stays above the normal range. It is diagnosed when systolic pressure, the top number measured while the heart beats, is above 130 mmHg and diastolic pressure, the bottom number measured between beats, is above 80 mmHg on...

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Blood Pressure Tools in Clinical Care

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korotkoff sounds

Korotkoff Sounds During Blood Pressure Checks

Korotkoff sounds are the sounds heard during a blood pressure check with a sphygmomanometer. A stethoscope or a Doppler device is usually placed below the cuff to listen for them. These sounds were first described by Russian physician Nikolai Korotkov in 1905. Korotkoff sounds appear when the cuff pressure falls to the patient’s systolic blood pressure. Before that point, inflating the cuff about 30 millimeters of mercury above systolic pressure blocks blood flow, so no sounds are heard. As...

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Why Blood Pressure Readings Can Be Wrong

Blood pressure monitoring is an important clinical procedure for checking cardiovascular health. Accurate readings help doctors diagnose and manage heart and blood vessel conditions. But several factors can make the result falsely high or falsely low. Patient habits and body changes can affect the reading before the cuff is even used. A recent meal, caffeine, or smoking can raise blood pressure for a short time. Stress, physical strain, and natural daily rhythms, called circadian rhythms, can...

pre-procedural guidelines for assessing blood pressure

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Preparing for an Accurate Blood Pressure Check

Accurate blood pressure measurement starts with careful preparation. Standard pre-procedural steps help healthcare professionals get reliable readings and support patient safety. These steps also improve communication and the overall quality of care. Before starting, gather the needed equipment. This includes a stethoscope, a sphygmomanometer, a cuff that fits the arm, a pen, a flow sheet, and an alcohol swab. The cuff size matters. It should cover about 40% of the arm’s circumference at the...

assessment of blood pressure in brachial artery(one-step method)

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Measuring Blood Pressure with a Digital Cuff

Measuring blood pressure with a digital cuff is a simple clinical procedure that uses an oscillometric sphygmomanometer. It focuses on accurate readings, patient safety, and comfort. The process also helps support reliable follow-up care. Before the measurement begins, hand hygiene is done to reduce cross-infection risk. The procedure is then explained to the patient so they know what to expect. This includes the brief length of the assessment and any sensations they may feel. Clear...

Manual blood pressure measurement in the brachial artery uses an aner​oid sphygmomanometer and a stethoscope to find systolic and diastolic pressure. This technique is a core clinical skill for checking blood pressure in people with hypertension or other cardiovascular conditions. The procedure begins with hand hygiene. This lowers the risk of cross-infection. The patient is then told what will happen. Clear explanation helps reduce anxiety and supports cooperation, which can affect the...

assessing blood pressure using a doppler ultrasound

assessing-blood-pressure-using-a-doppler-ultrasound

Doppler Ultrasound for Accurate Blood Pressure

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Measuring Leg Blood Pressure Step by Step

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special considerations while measuring blood pressure

special-considerations-while-measuring-blood-pressure

Common Blood Pressure Reading Pitfalls

Blood pressure readings can change because of body position, arm choice, sound quality, and the type of device used. Careful technique helps healthcare workers get the most accurate result and spot problems early. It is best to check blood pressure in both arms during the first assessment. The systolic value can differ by five to ten mm Hg between arms. For later checks, use the arm with the higher reading. Body position also matters. Diastolic pressure is about five millimeters of mercury...

key terms and concepts

Learn the two-step manual method for measuring brachial blood pressure with an aneroid sphygmomanometer, including cuff placement, Korotkoff sounds, and recording results.

Manual Brachial Blood Pressure Measurement | JoVE K12

JoVE Core Nursing offers concise animated lessons on nursing practices, covering health systems, nursing organizations, and health concepts. It includes practical communication, infection prevention, and nursing fundamentals, providing students with a clear understanding of nursing principles.

Manual Brachial Blood Pressure Measurement

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