Oesophageal, rectal, axillary, tympanic and pulmonary artery temperatures during cardiac surgery

Robinson, Joan; Charlton, J E; Seal, Robert F.; Spady, Donald W.; Joffres, Michel

doi:10.1007/bf03012021

Cited by 115 publications

(88 citation statements)

References 26 publications

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“…However, our method is repeatable and quantitative. There is some debate as to whether tympanic temperature accurately reflects body temperature, and although several studies support its accuracy, we did not have the facility to measure blood line temperature (40,41). Finally, we did not perform coronary angiography on these patients, so we cannot tell to what extent the degree of large-vessel epicardial disease underlay our results.…”

Section: Discussionmentioning

confidence: 88%

Dialysis-Induced Regional Left Ventricular Dysfunction Is Ameliorated by Cooling the Dialysate

Selby

Burton

Chesterton

et al. 2006

Clinical Journal of the American Society of Nephrology

155

166

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Dialysis patients who develop cardiac failure have a poor prognosis. Recurrent subclinical myocardial ischemia is important in the genesis of heart failure in nondialysis patients. It has previously been demonstrated that subclinical ischemia occurs during hemodialysis; therefore, this study examined whether the improved stability of cool-temperature dialysis lessens this phenomenon. Ten patients who were prone to intradialytic hypotension entered a randomized, crossover study to compare the development of dialysis-induced left ventricular (LV) regional wall motion abnormalities (RWMA) at dialysate temperatures of 37 and 35°C. Serial echocardiography with quantitative analysis was used to assess ejection fraction and regional systolic LV function. BP and hemodynamic variables were measured using continuous pulse wave analysis. The severity of thermal symptoms was scored using a simple questionnaire. Forty-nine new RWMA developed in nine patients during hemodialysis with dialysate at 37°C (HD 37 ), compared with thirteen RWMA that developed in four patients during HD 35 (odds ratio 3.8; 95% confidence interval 2.1 to 6.9). The majority of RWMA displayed improved function by 30 min after dialysis. Overall, regional systolic LV function was significantly more impaired during HD 37 (P < 0.001). BP was higher during HD 35 , with fewer episodes of hypotension as a result of a higher peripheral resistance and no difference in stroke volume. The development of thermal symptoms was heterogeneous, with most patients tolerating HD 35 well. This study confirms previous findings of reversible LV RWMA that develop during hemodialysis. It also shows that this phenomenon can be ameliorated by reducing dialysate temperature, a simple intervention with no cost implications.

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Section: Discussionmentioning

confidence: 88%

Dialysis-Induced Regional Left Ventricular Dysfunction Is Ameliorated by Cooling the Dialysate

Selby

Burton

Chesterton

et al. 2006

Clinical Journal of the American Society of Nephrology

155

166

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“…3 Measuring esophageal temperature involves positioning a temperature probe in approximately the lower third of the esophagus. 4 Rectal measurements to determine core temperature involve the insertion of a sensor approximately 10 cm past the anal sphincter. Temporal measurement records the highest temperature from an infrared scan, presumably of the temporal artery.…”

mentioning

confidence: 99%

Core-Temperature Sensor Ingestion Timing and Measurement Variability

Domitrovich

Cuddy

Ruby

2010

Journal of Athletic Training

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Context: Telemetric core-temperature monitoring is becoming more widely used as a noninvasive means of monitoring core temperature during athletic events.Objective: To determine the effects of sensor ingestion timing on serial measures of core temperature during continuous exercise.Design: Crossover study. Setting: Outdoor dirt track at an average ambient temperature of 4.46C 6 4.16C and relative humidity of 74.1% 6 11.0%.Patients or Other Participants: Seven healthy, active participants (3 men, 4 women; age 5 27.0 6 7.5 years, height 5 172.9 6 6.8 cm, body mass 5 67.5 6 6.1 kg, percentage body fat 5 12.7% 6 6.9%, peak oxygen uptake [V O 2peak ] 5 54.4 6 6.9 mLNkg 21 Nmin 21 ) completed the study.Intervention(s): Participants completed a 45-minute exercise trial at approximately 70% V O 2peak . They consumed coretemperature sensors at 24 hours (P1) and 40 minutes (P2) before exercise.Main Outcome Measure(s): Core temperature was recorded continuously (1-minute intervals) using a wireless data logger worn by the participants. All data were analyzed using a 2-way repeated-measures analysis of variance (trial 3 time), Pearson product moment correlation, and Bland-Altman plot.Results: Fifteen comparisons were made between P1 and P2. The main effect of time indicated an increase in core temperature compared with the initial temperature. However, we did not find a main effect for trial or a trial 3 time interaction, indicating no differences in core temperature between the sensors (P1 5 38.36C 6 0.26C, P2 5 38.36C 6 0.46C).Conclusions: We found no differences in the temperature recordings between the 2 sensors. These results suggest that assumed sensor location (upper or lower gastrointestinal tract) does not appreciably alter the transmission of reliable and repeatable measures of core temperature during continuous running in the cold.Key Words: thermal response, continuous exercise, body temperature Key Points N The telemetric core-temperature sensors recorded consistent core-temperature data independent of the time of ingestion and the assumed location of the sensor in the lower gastrointestinal tract during continuous running in the cold.N The wireless core-temperature sensors could give health care providers a reliable way to track core-temperature changes in athletes during sporting events and to respond more effectively to heat-related symptoms in at-risk participants.T he practical ability to monitor core body temperature might be critical in athletic settings where the probability for developing heat or cold illness is elevated 1 and athletic performance subsequently decreases. 2 The more common methods for measuring core temperature include pulmonary artery, esophageal, rectal, and temporal measurements, which are impractical in a sport or occupational setting. Each of these measurement techniques has different applications for various scenarios. Pulmonary arterial blood temperature is measured with insertion of a catheter into the right pulmonary artery. 3 Measuring esophageal temperature involves positioni...

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“…In recent years, several studies on the accuracy of IRT have been published with conflicting results. [14][15][16][17][18][19][20][21][22][23] We therefore evaluated the prototype in a population undergoing rapid changes in core temperature, using a large number FIGURE 1 Bland Altman plot of the paired measurements displayed against the average of the pair when the prototype of the infrared ear thermometer (IRT 4000) was compared to the pulmonary artery (PA) catheter.…”

Section: Discussionmentioning

confidence: 99%

“…In other studies, pulmonary artery thermometry was preferred as the reference method. [16][17][18][19][20][21][22][23] However, the statistical evaluation recommended by Bland and Altman 11 was not used in all studies. 16,17 This method considers that the result of any comparison of two instruments for clinical measurement can be due to technical errors in the reference method as well as in the new method to be tested.…”

Section: Discussionmentioning

confidence: 99%

La précision ďun nouveau thermomètre auriculaire infrarouge chez des patients de cardiochirurgie

Böck

Hohlfeld

Engeln

et al. 2005

Can J Anesth/J Can Anesth

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Purpose:To evaluate the equivalency of the prototype of a new infrared ear thermometer (IRT 4000) in comparison to the temperature measurements of a pulmonary artery catheter (PAC) and a continual contact probe on the tympanic membrane. Methods:After approval by the local Ethics Committee, 26 (six female and 20 male) patients undergoing elective cardiac surgery were included in a single center open trial. During surgery, temperature measurements were recorded with the IRT 4000 in the left ear, and with a tympanic contact probe in the right ear, as well as with a PAC as reference. Measurements with the infrared ear thermometers and continual PAC values were recorded every six minutes. Results:The average temperature measured with the IRT 4000 was 0.08°C above the temperature of the PAC (95% confidence interval from -0.44-0.61°C). Conclusion:Infrared ear thermometers 4000 temperature readings accurately reflect body core temperature and correlate well with the invasive PAC. Infrared ear thermometers may present a clinically useful alternative to the pulmonary artery thermometry for the measurement of core temperature in the perioperative setting or in the intensive care unit. P ERIOPERATIVE hypothermia is associated with numerous complications such as surgical wound infections, 1 increased bleeding and transfusion requirements, 2 morbid cardiac events 3 and increased costs of the perioperative management. 4 Therefore, monitoring of body temperature is regarded as essential during anesthesia. 5 Pulmonary artery thermometry reflects the temperature of the blood which supplies the vital organs and is often regarded as the "gold standard" for the measurement of core body temperature. 6 However, it is generally accepted that none of the current thermometry methods is ideal, and the best anatomical measurement site alternative to the pulmonary artery has yet to be determined. ObjectifTemperature measured on the tympanic membrane correlates well with the temperature of the hypothala-CARDIOTHORACIC ANESTHESIA, RESPIRATION AND AIRWAY

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Oesophageal, rectal, axillary, tympanic and pulmonary artery temperatures during cardiac surgery

Cited by 115 publications

References 26 publications

Dialysis-Induced Regional Left Ventricular Dysfunction Is Ameliorated by Cooling the Dialysate

Dialysis-Induced Regional Left Ventricular Dysfunction Is Ameliorated by Cooling the Dialysate

Core-Temperature Sensor Ingestion Timing and Measurement Variability

La précision ďun nouveau thermomètre auriculaire infrarouge chez des patients de cardiochirurgie

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