La onda de pletismografía y su correlación con la reposición de líquidos intraoperatorios en pacientes sometidos a anestesia general

Abstract

Background. It has been known the need for monitoring of the hemodynamic status of surgical patients in a dynamic way, allowing a rapid assessment, less invasive and reliable for an accurate diagnosis and to evaluate the response to the behaviors taken. The delta of plethysmography is a reliable, noninvasive and dynamic that can meet the above characteristics and which also can have a major role in a goal directed therapy. Methods. Systematic assessments were conducted of the variations in the pulse oximeter wave and patient variables from induction of anesthesia until the start of the surgical procedure; we investigated the correlation between the variability of wave plethysmography, plethysmography delta (¿POP) and the intraoperative fluid requirement. Adult patients were included in the range of 18 to 80 years who met the inclusion criteria, scheduled for surgery under general anesthesia in the Institute of Cardiology Foundation Cardioinfantil to achieve the calculated sample of 31 patients. Following the ethical principles of the Declaration of Helsinki and Colombia law, this study did not consider making any intervention in patients than they categorized as low risk. Results: 80. 6% with increased variability, correlations between the variability of the pulse wave, ¿POP and the amount of intraoperative fluids (0. 245 IC 95%), decreased delta POP in T3, suggesting response to fluids, correlation between use of vasopressors, analgesia and postoperative nausea and vomiting. Conclusion. Exist correlation between the variability of wave plethysmography, ¿POP and intravenous fluid replacement in mechanically ventilated patients during general anesthesia. It’s also found association between the use de vasopressors, analgesia and postoperative nausea and vomiting.