Comparing tympanic membrane and pulmonary artery catheter temperatures

Area of Science:

• Medical Devices
• Clinical Thermometry
• Critical Care Medicine

Background:

• Conflicting results exist regarding tympanic membrane thermometry accuracy.
• Nursing practice councils often drive adoption of new medical technologies.
• Cardiac surgical intensive care units require precise patient monitoring.

Purpose of the Study:

• Assess the feasibility of increased tympanic thermometer use.
• Evaluate tympanic membrane temperature accuracy against a gold standard.
• Determine clinical significance of temperature measurement discrepancies.

Main Methods:

• Prospective study in a cardiac surgical intensive care unit.
• Comparison of tympanic membrane temperatures with pulmonary artery catheter temperatures.
• Analysis of clinical significance of observed discrepancies.

Main Results:

• Clinically significant discrepancies were found between tympanic membrane and pulmonary artery catheter temperatures.
• The observed temperature differences raise concerns about accuracy.
• Data suggests tympanic thermometry may not be suitable for this patient population.

Conclusions:

• The study's findings preclude the expansion of tympanic thermometer use in the hospital.
• Pulmonary artery catheter thermometry remains a more reliable method in this critical care setting.
• Further research may be needed to validate tympanic thermometry in other clinical areas.