Question

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5) You work at a medical device repair center for a large Midwest distributor. You receive a digital blood pressure monitor with reports of inaccurate readings. The filed report indicates the monitor was being used for triage by paramedics in Chicago during the winter. You perform standardized verification testing of the sensor and determine no issue with the device performance. Explain why the paramedics may have received inaccurate readings (be sure to reference types of inputs) and what steps they may take to ensure accurate readings in the future.

Answer 1

#. The reasons behind the inaccurate readings may be :-

Using the wrong-sized cuff. The most common error when using indirect blood pressure measuring equipment is using an incorrectly sized cuff.

Incorrectly positioned your patient's body.

Incorrectly placed the cuff incorrectly.

Readings exhibit 'prejudice' .

Not factoring in electronic units correctly

Having a full bladder – This can add 10-15 points to your reading. You should always empty your bladder before measuring blood pressure.

Slouching, unsupported back/feet – Poor support when sitting can increase your reading by 6-10points. Make sure you’re in a chair with your back supported and feet flat on the floor or a footstool.

Unsupported arm – If your arm is hanging by your side or you have to hold it up during a reading, you may see numbers up to 10 points higher than they should be. Position your arm on a chair or counter, so that the measurement cuff is level with your heart.

Wrapping the cuff over clothing – This common error can add 5-50 points to your reading. Instead, be sure the cuff is placed on a bare arm.

When the cuff is too small – Your pressure may read 2-10 points higher. Ensure a proper fit. Your healthcare provider can help you with this.

Sitting with crossed legs – While polite, it could increase a blood pressure reading 2-8 points. It’s best to uncross your legs as well as ensure your feet are supported.

Talking – Answering questions, talking on the phone, etc. can add 10 points. Stay still and silent to ensure an accurate measurement.

#. Steps to be taken to get an accurate BP are :-

Step 1

Position patient's arm correctly to obtain BP

Step 2

Chooses appropriately sized cuff

Step 3

Locates brachial artery

Step 4

Positions cuff appropriately

Step 5

Inflates cuff to point of occlusion of brachial or redial pulse

Step 6

Deflates cuff appropriately

Step 7

Inflates cuff to 30 mmHg above point of occlusion

Step 8

Read pressure gauge appropriately

Step 9

Recognizes if BP needed to be repeated

Step 10

Obtains BP within 4mmHg both systolic and diastolic of instructor's reading