Key result
Photoplethysmographic recording of oscillometric envelopes was more accurate than pneumoplethysmographic recording, with mean systolic differences from auscultation of -0.6 vs 12.1 mmHg.
Why the study?
Does photoplethysmographic recording improve the accuracy of oscillometric blood pressure estimation compared to pneumoplethysmographic recording in healthy subjects?
Observational (n=17)
Does photoplethysmographic recording improve the accuracy of oscillometric blood pressure estimation compared to pneumoplethysmographic recording in healthy subjects?
Absolute Event Rate: -0.6% vs 12.1%
Photoplethysmographic recording of oscillometric envelopes provides more accurate blood pressure estimates compared to pneumoplethysmographic recording and is less sensitive to cuff size alterations.
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May support photoplethysmography for oscillometric BP accuracy in healthy subjects; hypothesis-generating and requires prospective validation before practice change.
Raamat et al. (2010) conducted an observational in Healthy (n=17). Photoplethysmographic recording vs. Pneumoplethysmographic recording was evaluated on Mean difference in mmHg (oscillometric estimate minus auscultatory reference) for systolic pressure using a 40mm cuff. Photoplethysmographic recording of oscillometric envelopes was more accurate than pneumoplethysmographic recording, with mean systolic differences from auscultation of -0.6 vs 12.1 mmHg.
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