Study Finds Only 14% of Online Blood Pressure Images Show Correct Measurement Technique

Only 14% of online stock images showing blood pressure measurement align with clinical guidelines, according to research published in Hypertension, an American Heart Association journal. The study analyzed over 1,100 images from major stock photo websites and found significant deviations from proper technique that could contribute to inaccurate readings both at home and in clinical settings.

Lead author Alta Schutte, Ph.D., professor of cardiovascular medicine at the University of New South Wales Sydney, expressed concern about the findings. "We expected that about 50% of images would be accurate, however, our findings were worse than expected," Schutte said. "Because people tend to remember images better than words — a phenomenon known as the picture-superiority effect — inaccurate visuals could have serious public health consequences."

The analysis identified multiple common errors in the images. The most frequent deviations included lack of back support (73%), forearm not resting on a flat surface (55%), use of manual instead of electronic devices (52%), feet dangling rather than flat on the floor (36%), and talking during measurement (23% for healthcare professionals, 18% for patients). Other errors included mid-arm not at heart level (19%), legs crossed (13%), patient not sitting (5%), and cuff placed over clothing (12%).

Notably, images depicting home blood pressure monitoring were approximately three times more accurate than those showing measurements in healthcare facilities. Home monitoring images showed 25% accuracy compared to only 8% accuracy in clinical setting images. Images showing blood pressure measured by patients or other non-professionals were six times more likely to show accurate techniques compared to those depicting healthcare professionals taking measurements.

The American Heart Association provides resources to help people learn proper blood pressure measurement techniques. Daniel Jones, M.D., chair of the American Heart Association's 2025 high blood pressure guideline writing committee, emphasized the importance of accurate imagery. "This study highlights the importance of using accurate images to demonstrate the proper technique for measuring blood pressure," Jones said. "Home blood pressure monitoring is recommended for patients to help confirm an office diagnosis of high blood pressure and to monitor, track progress and tailor care as part of an integrated care plan."

With nearly half of U.S. adults having high blood pressure, according to American Heart Association statistics, the potential impact of incorrect measurement techniques is substantial. Schutte urged organizations to review their online images, stating, "We have noted photos with wrong techniques on the websites of major health organizations and universities. They should check that all images show how to measure blood pressure accurately and represent the proper techniques to reduce the likelihood of incorrect blood pressure readings."