Active clinical trials for "Hypothermia"

Using delaying the first bathing by 8 hours as an interventional measure, considering the consistent effect of physiological maturity, newborns with a gestational age of ≥37 weeks were selected as the subjects in the nursery cases, and randomly assigned to the delayed bathing group and the routine bathing group , 10 minutes before bathing, immediately after bathing, 10 minutes, 30 minutes, and 60 minutes to analyze the differences in body temperature of the cases, and the differences in the rate of exclusive breastfeeding at discharge.

During surgery body temperature can decrease which can adversely affect how people recover from surgery. This is a common problem. We aim to reduce the incidence of this drop in body temperature during surgery by testing the effectiveness of warm intravenous fluids that the patients will receive as they are being infused, and of warm air blown into a blanket covering the body. The control group will not have any active warming methods. Study group 1 will have the intravenous fluid warmer in the pre- and intraoperative period. Study group 2 will have a forced-air warmer in the intra-operative period as well as the fluid warmer in the pre- and intraoperative period. We will also observe the neonates' vital signs following delivery.

Cardiopulmonary bypass (CPB) has been used successfully for cardiac surgery for over half a century. Hypothermia became a ubiquitous practice for adult patients undergoing CPB. To date, most studies have been conducted in coronary artery bypass graft (CABG) patients with conflicting results. Current evidence does not support one temperature management strategy for all patients. The purpose of this study is to compare the efficiency and safety of normothermic versus hypothermic CPB in valvular surgery patients.

This study will determine if modern under-patient warming mattresses are as effective as forced air warming blankets in preventing cold and shivering in patients scheduled for non emergency surgery.

Hypothermia is a common and serious complication during anesthesia and surgery. Anesthetic-induced hypothermia results from the inhibition of thermoregulatory control and exposure to cold operating room environment. Various warming methods, such as warm blankets, forced-air warmers and circulating water mattresses, are currently used to prevent and treat mild perioperative hypothermia. All are cutaneous approaches that rely on heating the peripheral tissues in order to increase the thermal core temperature. Application of cutaneous warming system blankets/pads are limited by location/extent of operative site; for example, in certain procedures such as laparatomies, reconstructive plastic surgery or orthopedic surgery, only a limited amount of skin surface is available for warming application. The Dynatherm vitalHEAT technology takes advantage of the body's natural thermoregulatory system to channel thermal energy to the body's core non-invasively at a rapid rate. The vital heat (vH2) system is designed to treat hypothermia during the peri-operative period through a combination of localized heat and vacuum application to one hand & forearm; this application 1) opens the arteriovenous anastamoses located in the palm of the hand and 2) conductively warms the extremity thus effectively warming the blood flow to the body's core. The vital heat vH2 system is a portable and compact warming device which provides a non-invasive approach to warming patients during surgery. The primary objective of this study is to determine if the Dynatherm Medical vitalHEAT (vH2) Temperature Management System is as effective as the forced-air warming Bair Hugger™ (Arizant Healthcare, Eden Prairie, MN) for maintenance of intraoperative body temperature in patients undergoing abdominal surgery under general anesthesia. The critical endpoints to be evaluated in making this determination are 1) % of subjects with an average intraoperative esophageal temperature of ≥ 36º C and 2) % of subjects with an initial post anesthesia care unit sublingual temperature of ≥ 36º C. Secondary objectives include 1) comparison of the core body temperatures @ 60 minutes post anesthesia induction, 2) comparison of temperature trends during surgery and 3) comparison of the subjects' post anesthesia care unit temperature trends and hypothermic symptoms such as shivering.

Perinatal asphyxia-induced brain injury is one of the most common causes of morbidity and mortality in term and preterm neonates. Birth asphyxia accounts for 23% of neonatal deaths globally and survivors suffer from long term neurological disability and impairment. Although many neuroprotective strategies appeared promising in animal models, most of them were not feasible and effective in human newborns. However, hypothermia was reported not to be effective if introduced beyond and thus should be introduced within 6 hrs after birth.Applying this selection criterion naturally would deprive many patients of the opportunity of hypothermia treatment.

Background: Hypothermia is common during general and regional anesthesia even when active warming measures are taken. The existing literature shows that, in pregnant patients, the use of forced air-warming during cesarean section under spinal anesthesia does not prevent maternal hypothermia. Therefore, this study aimed to establish the efficacy of a pre-warming system, initiated 30 minutes before the onset of spinal anesthesia and during surgery, in pregnant women subjected to elective cesarean delivery. Methods: Forty healthy pregnant patients undergoing elective cesarean section with spinal anesthesia were allocated to the control group (Gcont, n = 20), without the use of a thermal gown, and to the gown group (Ggown, n = 20), with the use of a thermal gown in the preoperative care unit, 30 minutes before spinal anesthesia installation and during surgery. After the anesthesia, the thermal gown was moved from the regular position and placed over the chest and upper limbs, as an upper body blanket, and maintained throughout the study. The following variables were observed: preoperative and operative room temperature, hemoglobin saturation, heart rate, arterial pressure, tympanic temperature in the preoperative care unit room (baseline) and at 0, 15, 30, 45 and 60 minutes after spinal anesthesia. Repeated Measure ANCOVA compared temperatures of each group, adjusted for baseline values.

To compart differences on the effect on core temperature between anesthetic induction with intravenous propofol versus inhalation induction with sevoflurane

The purpose of this study is to evaluate the effect of low dose versus high dose steroids vital signs of patients currently on steroids or recently treated with steroids undergoing major colorectal surgery. The investigators hypothesize that there will be no statistically significant difference in orthostatic hypotension (blood pressure measured on lying, sitting, and standing), blood pressure, temperature or heart rate in the standard and low dose groups.

Hypothermia during surgery and in the postoperative period is associated with adverse outcomes including impaired drug metabolism, cardiac morbidity, shivering, impaired immune function, coagulopathy, and increased use of hospital resources. Several clinical studies have demonstrated that maintenance of normothermia during the perioperative period significantly reduces morbidity. Mercury Biomed has developed a patient-warming system, WarmSmart, that potentially transfers adequate heat through hands and feet based on the physiological principle of peripheral arterio-venous shunt vaso-dilation. The technology works as a two-step process by selective thermal stimulation along the spinal cord to up-regulate blood flow to arterio-venous shunts and triggering arterio-venous shunt vasodilation and by applying circulating water heat exchangers to the palmar and plantar glabrous skin to warm highly perfused shunts in that area. General anesthesia reduces the vasoconstriction threshold (triggering core temperature) by 1-2°C, thus promoting arteriovenous shunt dilation. It remains unknown, though, whether cervical spine warming further augments arterio-venous shunt dilation during general anesthesia. If spine heating proves unnecessary under anesthesia, Mercury Biomed's WarmSmart warming could be simpler and less expensive. Investigators therefore propose to test the hypothesis that cutaneous heating near the cervical spine does not further augment arterio-venous flow in fingers during general anesthesia. Investigators propose to enroll ten patients. The patients will be pre-warmed and warmed intraoperatively with forced-air to maintain a core temperature near 36°C. A ThermaZone® Device capable of heating the cervical spine area will be positioned behind the patient's neck upon arrival in the operating rooms. Additionally a forced-air warmer will be positioned appropriately and activated as soon as practical, usually after prepping and draping. Ambient temperature will be maintained near 20°C. After about one hour of anesthesia when temperature and other factors are stable, investigators will start a 30-minute observation period. Thereafter investigators will activate the cervical spine warming system for 30 minutes (warming measurement period) and thereafter have a 30 minutes control period again. Measurements will be recorded such as mean-skin temperature, distal esophageal temperature, MAC fraction, mean-arterial pressure and finger blood flow.