Effects of a forced-air warming system and warmed intravenous fluids on hemodynamic parameters, shivering, and time to awakening in elderly patients undergoing open cardiac surgery.

Autor: Akbarpour Roshan MB; Student Research Committee, Nursing Care Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I.R.Iran., Jafarpoor H; Assistant Professor, Department of Anesthesiology and Operating Room, School of Allied Medical Sciences and Social Determinants of Health Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I.R.Iran., Shamsalinia A; Associate Professor, Nursing Care Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I.R.Iran., Fotokian Z; Associate Professor, Nursing Care Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I.R.Iran., Hamidi SH; Assistant Professor, Department of Anesthesiology, School of Medicine, Babol University of Medical Sciences, Babol, I.R.Iran.
Jazyk: angličtina
Zdroj: Annals of cardiac anaesthesia [Ann Card Anaesth] 2023 Oct-Dec; Vol. 26 (4), pp. 386-392.
DOI: 10.4103/aca.aca_20_23
Abstrakt: Background: As one of the most common postoperative complications, hypothermia is the main cause of numerous problems during treatment, especially in elderly patients with decreased cardiac reserves.
Objectives: The aim of the present study was to compare the effects of forced-air warming system (FAWS), warmed intravenous fluids (WIVFs) and routine method on hemodynamic parameters, arterial blood gases (ABGs), shivering, and time to awakening in elderly patients undergoing open cardiac surgery (OCS).
Methods: This clinical randomized controlled trial was conducted on 94 elderly patients who underwent OCS at Ayatollah Rouhani Hospital, Babol, Iran. They were divided into three groups, namely FAWS (n=31), WIVFs (n=31) and routine rewarming method (RRWM, with a blanket) (n=32). The data were then recorded in a checklist. Descriptive and inferential statistics were performed using SPSS 26 at a significance level of less than 0.05.
Results: The findings demonstrated that the degree of hypothermia had a significant decreasing trend in the groups receiving FAWS and WIVFs (P=0.002). Additionally, increased respiratory rate (P=0.013), higher bicarbonate (HCO3-) levels on arrival up to 4 hours after surgery (P=0.045), reduced lactate level (P=0.005), normal base excess (BE) and accelerated time to awakening (P=0.004) were observed in patients receiving FAWS. There was no significant difference in the study groups regarding shivering.
Conclusion: The results revealed that FAWS could mitigate the degree of hypothermia, increase body temperature and decrease the postoperative serum lactate levels. Moreover, BE as one of the most important parameters for ABGs, could remain at a normal level. Besides, the use of FAWS could lead to early awakening, and thus facilitate weaning and extubation of these patients.
Databáze: MEDLINE
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