Esophageal echocardiography probe as a temperature monitor in cardiac surgery

Completed

Brief Summary: Neurological complications are common in patients undergoing cardiac surgery and range from subtle cognitive decline to stroke. Hypothermia is used as a neuroprotective strategy but inadequate cooling or excessive rewarming on cardiopulmonary bypass often leads to inadequate neuroprotection. A variety of temperature monitoring sites are used but each lags behind true brain temperature. Transesophageal echocardiography (TEE) is used for monitoring of the heart and great vessels during the conduct of cardiac surgery. TEE probe has a thermistor at its tip and is very sensitive to track tissue temperature changes since it is designed to protect the tissues from injury. The TEE probe operates within temperature range of 18-42 degrees centigrade and shunts down below and above these temperatures. The TEE probe may thus be able to track core temperature changes earlier than the nasopharyngeal temperature probe. Thus, the aim of this study will be to compare the performance of the TEE probe as an esophageal temperature probe with the nasopharyngeal temperature probe and the arterial outlet temperature probe.

Recruitment & Eligibility

Inclusion Criteria

Patients undergoing cardiac surgery under cardiopulmonary bypass will be included in this study.

Exclusion Criteria

Patients with contraindications to TEE probe will be excluded from the study.

Primary Outcome Measures

Name	Time	Method
Accuracy of TEE probe as an oesophageal temperature monitor	Intraoperative- 5, 10,15, 20 and 30 minutes after cooling on CPB and 5, 10, 15, 20, and 30 minutes after rewarming

Secondary Outcome Measures

Name	Time	Method

Locations (1): AIIMS Bhubaneswar
🇮🇳
Khordha, ORISSA, India
AIIMS Bhubaneswar
🇮🇳Khordha, ORISSA, India
Dr Satyajeet Misra
Principal investigator
9438884048
misrasatyajeet@gmail.com