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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Pulse pressure variation and stroke volume variation under different inhaled concentrations of isoflurane, sevoflurane and desflurane in pigs undergoing hemorrhage

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Author(s):
Oshiro, Alexandre Hideaki [1] ; Otsuki, Denise Aya [1, 2] ; Hamaji, Marcelo Waldir M. [2] ; Rosa, Kaleizu T. [2] ; Ida, Keila Kazue [1] ; Fantoni, Denise T. [3] ; Costa Auler, Jr., Jose Otavio [1]
Total Authors: 7
Affiliation:
[1] Univ Sao Paulo, Fac Med, Programa Posgrad Anestesiol, Sao Paulo, SP - Brazil
[2] Univ Sao Paulo, Lab Invest Med LIM Anestesiol 08, Fac Med, Sao Paulo, SP - Brazil
[3] Univ Sao Paulo, Dept Cirurgia, Fac Med Vet & Zootecnia, Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Clinics; v. 70, n. 12, p. 804-809, 2015.
Web of Science Citations: 4
Abstract

OBJECTIVES: Inhalant anesthesia induces dose-dependent cardiovascular depression, but whether fluid responsiveness is differentially influenced by the inhalant agent and plasma volemia remains unknown. The aim of this study was to compare the effects of isoflurane, sevoflurane and desflurane on pulse pressure variation and stroke volume variation in pigs undergoing hemorrhage. METHODS: Twenty-five pigs were randomly anesthetized with isoflurane, sevoflurane or desflurane. Hemodynamic and echocardiographic data were registered sequentially at minimum alveolar concentrations of 1.00 (M1), 1.25 (M2), and 1.00 (M3). Then, following withdrawal of 30% of the estimated blood volume, these data were registered at a minimum alveolar concentrations of 1.00 (M4) and 1.25 (M5). RESULTS: The minimum alveolar concentration increase from 1.00 to 1.25 (M2) decreased the cardiac index and increased the central venous pressure, but only modest changes in mean arterial pressure, pulse pressure variation and stroke volume variation were observed in all groups from M1 to M2. A significant decrease in mean arterial pressure was only observed with desflurane. Following blood loss (M4), pulse pressure variation, stroke volume variation and central venous pressure increased (p<0.001) and mean arterial pressure decreased in all groups. Under hypovolemia, the cardiac index decreased with the increase of anesthesia depth in a similar manner in all groups. CONCLUSION: The effects of desflurane, sevoflurane and isoflurane on pulse pressure variation and stroke volume variation were not different during normovolemia or hypovolemia. (AU)