Abstract
If not estimated by a measuring device, the mean arterial pressure (MAP) can be approximated from the measured systolic (SBP) and diastolic blood pressure (DBP) by applying a traditional formula MAP=SBP+k.(SBP-DBP), where the pulse pressure coefficient k is equal to 0.33 in most common implications. Our aim was to study whether this value can validly be applied to calculate MAP of critically ill patients. A total of 19 patients after cardiac surgery with an intra-radial cannula were involved. SBP, DBP and MAP were obtained from the recorded arterial pressure waveforms. The value for k was found to be 0.31±0.04. Thus, MAP values obtained by applying the traditional one-third approximation were overestimated by 1.7±2.3 mmHg (p<0.001).
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© 2010 International Federation for Medical and Biological Engineering
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Jagomägi, K., Talts, J., Tähepöld, P., Raamat, R., Kivastik, J. (2010). Estimation of Mean Radial Blood Pressure in Critically Ill Patients. In: Bamidis, P.D., Pallikarakis, N. (eds) XII Mediterranean Conference on Medical and Biological Engineering and Computing 2010. IFMBE Proceedings, vol 29. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13039-7_37
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DOI: https://doi.org/10.1007/978-3-642-13039-7_37
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-13038-0
Online ISBN: 978-3-642-13039-7
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