Ignite Creation Date:
2025-12-24 @ 10:56 PM
Ignite Modification Date:
2026-06-02 @ 11:23 PM
Study NCT ID:
NCT02812069
Status:
WITHDRAWN
Last Update Posted:
2018-10-11
First Post:
2016-05-19
Is NOT Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
WarmSmart Warming Protocol
Sponsor:
The Cleveland Clinic
Organization:
Study Overview
Official Title:
WarmSmart Warming Protocol
Status:
WITHDRAWN
Status Verified Date:
2018-10
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Safety issue
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
None
Brief Summary:
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.
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.
Detailed Description:
None
Study Oversight
Has Oversight DMC:
False
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: