Response to Dr. Bernstein’s Review: Pressure Pulse Contour-Derived Stroke Volume and Cardiac Output in the Morbidly Obese Patient
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To the Editor:
We read with interest the article by Dr. Bernstein on Pressure Pulse Contour-derived Stroke Volume and Cardiac Output in the Morbidly Obese Patient . It is important to discuss the data presented in the review, considering that caution is necessary to accept his conclusion on pressure recording analytical method (PRAM) . We wonder how it is possible to draw similar conclusions based on the small number of studies considered and patients enrolled [3, 4, 5]. We may also highlight some discrepancies not only between the studies considered but also within each study [3, 4, 5]. It is important to distinguish between hemodynamic data measured directly, such as mean arterial pressure (MAP) or heart rate (HR), and hemodynamic data calculated by the PRAM [6, 7, 8, 9, 10, 11] or other methods .
KeywordsCardiac Output Obese Patient Stroke Volume Mean Arterial Pressure Cardiac Index
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