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Influence of Minor Ear Surgery on Infrared Tympanic Thermometry
David L. Mandell, MD;
Adam W. Pearl, MD;
Michael A. Rothschild, MD
Arch Otolaryngol Head Neck Surg. 2001;127:547-552.
Background Infrared tympanic thermometry (ITT) is often used for postoperative
recovery room monitoring regardless of recent minor otologic surgery.
Objective To evaluate the use of ITT in pediatric patients who have undergone
bilateral myringotomy with insertion of pressure-equalizing tubes.
Design A prospective cohort study.
Setting Tertiary care academic medical center.
Patients Consecutive patients of a staff pediatric otolaryngologist (M.A.R.):
(1) ear surgery group, children aged 10 years or younger undergoing bilateral
myringotomy with insertion of pressure-equalizing tubes and (2) non–ear
surgery group, children aged 10 years or younger undergoing bilateral tonsillectomy
with or without adenoidectomy.
Interventions Immediate preprocedure temperature measurements included right and left
ear ITT. Immediate postprocedure temperature measurements included right and
left ear ITT and thermistor probe rectal temperature.
Main Outcome Measures The average difference between the preprocedure and postprocedure tympanic
temperature in the ear surgery group was compared with that in the non–ear
surgery group. The average difference between postprocedure rectal and ear
temperature in the ear surgery group was compared with that in the non–ear
surgery group.
Results There were 20 patients (40 ears) in the ear surgery group and 20 patients
(40 ears) in the non–ear surgery group. In the ear surgery group, the
average difference between the preprocedure and postprocedure tympanic temperature
(0.55°C) was not significantly different from that (0.62°C) in the
non–ear surgery group (P = .66, 1-way analysis
of variance). In the ear surgery group, the average difference between postprocedural
rectal and ear temperature (1.94°C) was not significantly different from
that (1.89°C) in the non–ear surgery group (P = .76, 1-way analysis of variance).
Conclusion Recent minor ear surgery (bilateral myringotomy with insertion of pressure-equalizing
tubes) does not have a significant effect on ITT measurements in pediatric
patients.
From the Departments of Otolaryngology (Drs Mandell, Pearl, and Rothschild)
and Pediatrics (Dr Rothschild), Mount Sinai School of Medicine, New York,
NY.
Corresponding author: Michael A. Rothschild, MD, Department of Otolaryngology,
Box 1189, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York,
NY 10029 (e-mail: michaelr{at}idt.net).
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