Bernd Saugel1, Philip C Reese, Daniel I Sessler, Christian Burfeindt, Julia Y Nicklas, Hans O Pinnschmidt, Daniel A Reuter, Stefan Südfeld. 1. From the Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine (B.S., P.C.R., C.B., J.Y.N., S.S.) the Department of Medical Biometry and Epidemiology (H.O.P.), University Medical Center Hamburg-Eppendorf, Hamburg, Germany the Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio (D.I.S.) the Department of Anesthesiology and Intensive Care Medicine, University Medical Center Rostock, Rostock, Germany (D.A.R.).
Abstract
BACKGROUND: Normal blood pressure varies among individuals and over the circadian cycle. Preinduction blood pressure may not be representative of a patient's normal blood pressure profile and cannot give an indication of a patient's usual range of blood pressures. This study therefore aimed to determine the relationship between ambulatory mean arterial pressure and preinduction, postinduction, and intraoperative mean arterial pressures. METHODS: Ambulatory (automated oscillometric measurements at 30-min intervals) and preinduction, postinduction, and intraoperative mean arterial pressures (1-min intervals) were prospectively measured and compared in 370 American Society of Anesthesiology physical status classification I or II patients aged 40 to 65 yr having elective noncardiac surgery with general anesthesia. RESULTS: There was only a weak correlation between the first preinduction and mean daytime mean arterial pressure (r = 0.429, P < 0.001). The difference between the first preinduction and mean daytime mean arterial pressure varied considerably among individuals. In about two thirds of the patients, the lowest postinduction and intraoperative mean arterial pressures were lower than the lowest nighttime mean arterial pressure. The difference between the lowest nighttime mean arterial pressure and a mean arterial pressure of 65 mmHg varied considerably among individuals. The lowest nighttime mean arterial pressure was higher than 65 mmHg in 263 patients (71%). CONCLUSIONS: Preinduction mean arterial pressure cannot be used as a surrogate for the normal daytime mean arterial pressure. The lowest postinduction and intraoperative mean arterial pressures are lower than the lowest nighttime mean arterial pressure in most patients.
BACKGROUND: Normal blood pressure varies among individuals and over the circadian cycle. Preinduction blood pressure may not be representative of a patient's normal blood pressure profile and cannot give an indication of a patient's usual range of blood pressures. This study therefore aimed to determine the relationship between ambulatory mean arterial pressure and preinduction, postinduction, and intraoperative mean arterial pressures. METHODS: Ambulatory (automated oscillometric measurements at 30-min intervals) and preinduction, postinduction, and intraoperative mean arterial pressures (1-min intervals) were prospectively measured and compared in 370 American Society of Anesthesiology physical status classification I or II patients aged 40 to 65 yr having elective noncardiac surgery with general anesthesia. RESULTS: There was only a weak correlation between the first preinduction and mean daytime mean arterial pressure (r = 0.429, P < 0.001). The difference between the first preinduction and mean daytime mean arterial pressure varied considerably among individuals. In about two thirds of the patients, the lowest postinduction and intraoperative mean arterial pressures were lower than the lowest nighttime mean arterial pressure. The difference between the lowest nighttime mean arterial pressure and a mean arterial pressure of 65 mmHg varied considerably among individuals. The lowest nighttime mean arterial pressure was higher than 65 mmHg in 263 patients (71%). CONCLUSIONS: Preinduction mean arterial pressure cannot be used as a surrogate for the normal daytime mean arterial pressure. The lowest postinduction and intraoperative mean arterial pressures are lower than the lowest nighttime mean arterial pressure in most patients.
Authors: Michael R Mathis; Milo C Engoren; Hyeon Joo; Michael D Maile; Keith D Aaronson; Michael L Burns; Michael W Sjoding; Nicholas J Douville; Allison M Janda; Yaokun Hu; Kayvan Najarian; Sachin Kheterpal Journal: Anesth Analg Date: 2020-05 Impact factor: 5.108
Authors: Alexandre Joosten; Joseph Rinehart; Philippe Van der Linden; Brenton Alexander; Christophe Penna; Jacques De Montblanc; Maxime Cannesson; Jean-Louis Vincent; Eric Vicaut; Jacques Duranteau Journal: Anesthesiology Date: 2021-08-01 Impact factor: 8.986
Authors: Raymond Hu; Yasmean Kalam; Jeremy Broad; Tim Ho; Frank Parker; Matthew Lee; Rinaldo Bellomo Journal: Heart Vessels Date: 2020-03-21 Impact factor: 2.037
Authors: Bernd Saugel; Lester A H Critchley; Thomas Kaufmann; Moritz Flick; Karim Kouz; Simon T Vistisen; Thomas W L Scheeren Journal: J Clin Monit Comput Date: 2020-03-14 Impact factor: 2.502