Significant factors influencing inadvertent hypothermia in pediatric anesthesia
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Thermal imbalances are very common during surgery. Hypothermia exposes the patient to post-operative shivering, cardiac dysfunction, coagulopathy, bleeding, wound infection, delayed anesthesia recovery, prolonged hospital stay and increased hospitalization cost. There are many factors contributing to intraoperative hypothermia. This is a prospective cohort study conducted through observation and measurement of pediatric surgical patients’ temperature. Convenience sampling methods were used in this study. Initial skin temperature and core temperature at 10 min, 30 min,1 h, 2 h, 3 h, 4 h, 5 h, 6 h and at the end of surgery were recorded. Body temperature was monitored from time of transfer to the operating table until recovery and discharge to the respective pediatric ward. The overall incidence of intraoperative hypothermia was still very high at about 46.6% even though active and passive temperature management were carried out during surgery. Patient’s age, body weight, duration of surgery, type of surgery, intraoperative blood loss, type of anesthesia and operating room temperature were factors that contributed to intraoperative hypothermia. Hypothermia is common in surgery, especially in major and long duration surgery. Intraoperative hypothermia can be life threatening if it is not handled carefully. Various methods are used before, during and after surgery to maintain a patient’s body temperature within the normothermia range. The use of an active warming device like the Bair Hugger® air-forced warming system seems to be a good method for reducing the risk of intraoperative hypothermia and effectively maintaining body temperature for all major and minor surgeries.
KeywordsIntraoperative hypothermia Risk factors Pediatric surgery
LLL designed the current study protocol, data collection tool and database with substantial intellectual input from Professor LC and Professor SR. Data collection was performed by LLL. Data cleaning, validation and queries were performed by LLL. All statistical analysis was performed by LLL with advice from Professor SR. Contributions to interpretation of data were received from all authors. First draft of manuscript was written by LLL with intellectual input from Professor LC. In addition, critical review of and contributions to subsequent drafts were received from Dr. KSN Associate Professor MHS, Professor LC and Professor SR. All authors reviewed and approved the final draft of the manuscript prior to submission. All authors agree to be accountable for the accuracy and integrity of the piece of work.
Compliance with ethical standards
Conflict of interest
No conflicts of interest to disclose.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study was approved by the director of University of Malaya Medical Centre (UMMC), as well as from the Medical Centre Research Committee (MCRC).
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