Accuracy of infrared ear thermometry in adult patients

Stavem, Knut; Saxholm, H; Smith-Erichsen, N

doi:10.1007/s001340050297

Cited by 85 publications

(62 citation statements)

References 27 publications

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“…In a study 20 in 13 febrile patients, the oral thermometer was most accurately for detecting fever (>38.3°C), whereas the earbased measurement had the lowest chance of a false-negative reading. In 2 additional studies, 15,21 researchers evaluated the utility of ear-based temperature measurements for detecting fever (variably defined as a body temperature >38°C-38.5°C). In these studies, the ear-based thermometers also showed high specificity (0.92-1.00), indicating accuracy in identifying patients without a fever; but lower sensitivity (0.50-0.80) indicating accurate identification of only 50% to 80% of patients with a fever.…”

Section: Hyperthermia or Hypothermiamentioning

confidence: 99%

Noninvasive Measurement of Body Temperature in Critically Ill Patients

Bridges

Thomas

2009

Critical Care Nurse

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Section: Hyperthermia or Hypothermiamentioning

confidence: 99%

Noninvasive Measurement of Body Temperature in Critically Ill Patients

Bridges

Thomas

2009

Critical Care Nurse

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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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“…The rectum was selected as the site for body temperature measurement because of the difficulties and hazards associated with direct tympanic temperature measurement (1,15,16) associated with ear-based temperatures (1,(17)(18)(19)(20). Maternal rectal temperature was measured three times, just before anesthesia, at the beginning of operation and at delivery.…”

Section: Measurementsmentioning

confidence: 99%

The effect of epidural and general anesthesia on newborn rectal temperature at elective cesarean section

Yentur

Topçu

Ekici

et al. 2009

Braz J Med Biol Res

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Both epidural and general anesthesia can impair thermoregulatory mechanisms during surgery. However, there is lack of information about the effects of different methods of anesthesia on newborn temperature. The purpose of this study was to determine whether there are differences in newborn rectal temperature related to type of anesthesia. Sixty-three pregnant women were randomly assigned to receive general or epidural anesthesia. Maternal core temperature was measured three times with a rectal probe just before anesthesia, at the beginning of surgery and at delivery. In addition, umbilical vein blood was sampled for pH. The rectal temperatures of the babies were recorded immediately after delivery, and Apgar scores were determined 1, 5, and 10 min after birth. The duration of anesthesia and the volume of intravenous fluid given during the procedure (833 ± 144 vs 420 ± 215 mL) were significantly higher in the epidural group than in the general anesthesia group (P < 0.0001). Maternal rectal temperatures were not different in both groups at all measurements. In contrast, newborn rectal temperatures were lower in the epidural anesthesia group than in the general anesthesia group (37.4 ± 0.3 vs 37.6 ± 0.3°C; P < 0.05) immediately after birth. Furthermore, the umbilical vein pH value (7.31 ± 0.05 vs 7.33 ± 0.01; P < 0.05) and Apgar scores at the 1st-min measurement (8.0 ± 0.9 vs 8.5 ± 0.7; P < 0.05) were lower in the epidural anesthesia group than in the general anesthesia group. Since epidural anesthesia requires more iv fluid infusion and a longer time for cesarean section, it involves a risk of a mild temperature reduction for the baby which, however, did not reach the limits of hypothermia.

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Accuracy of infrared ear thermometry in adult patients

Cited by 85 publications

References 27 publications

Noninvasive Measurement of Body Temperature in Critically Ill Patients

Noninvasive Measurement of Body Temperature in Critically Ill Patients

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

The effect of epidural and general anesthesia on newborn rectal temperature at elective cesarean section

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