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Improve Accuracy of Doppler Blood Pressure Monitoring

Views: 5363 - Comments: 7

Getting an accurate blood pressure measurement using a Doppler can be tricky. Learn from DoveLewis Technician Kara Prater, CVT, about how to troubleshoot common issues for better accuracy.

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Kara Prater(Erdman)'s picture
Kara Prater(Erdman)


Enrolled: 02/2019

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Ben Shiffman's picture

Thanks for this video! I was just wondering if using a small piece of tape to keep the cuff on, if it’s an old cuff that won’t close well, will give you a false reading.

Kara Prater(Erdman)'s picture

Hi Ben, ideally I would say no. Applying tape too tightly can constrict the inflation of the cuff and give you inaccurate readings. If you really cannot find another cuff, tape applied loosely may be used, but keep in mind that there is still a chance that your readings will not be accurate. Hope that helps!

Stacia Bourbeau's picture

Our Dopplar has very loud static making it hard to hear the readings. We got a new crystal and it didn't help. any suggestions?

Caleb Uptergrove's picture

There are many reasons a doppler can be having excessive static. Proper care and use is the first step in preventing static. Make sure to clean and dry the probe after each use. Try to avoid pulling, twisting, or removing the probes as this can wear out the connectors and cause static. Portable and mobile radio frequency equipment can affect medical electrical equipment. Dopplers may experience a high pitched tone or buzzing noise from radio interference caused by a cell phone, mobile service, another doppler, electrocautery, or fluorescent lighting. You can check for a faulty circuit by disconnecting the probes and turning the doppler unit on, turn the volume up and you should hear smooth white noise. If the unit is cracking or sputtering your unit needs to be serviced. You can also try to clean and tighten the probe. Clean by wiping the pin in the center of the plug and the flange with isopropyl alcohol. You may need to consider having it serviced if it continues. You can usually find the service manual for your specific unit with troubleshooting guides on the internet.

Terri Massa's picture

One thing I've noticed people doing with Dopplers is repositioning the crystal without turning down the volume. I've been told by the person who services our unit that this can blow the speaker.

Stephanie Green's picture

I noticed you have your red probe cover attached to the wire. We are constantly having issues with people losing the red cover. Do you find this way to protect the crystal just as well?