Poster Presentations: Tuesday, October 25, 2011 |

Gender Differences in Airway Resistance via Impulse Oscillometry at 5Hz in Pediatric Patients FREE TO VIEW

Stamatia Alexiou, MD; Sneha Taylor, MD; Glenn Hildreth, RPFT; Kevin Maupin, MD
Chest. 2011;140(4_MeetingAbstracts):373A. doi:10.1378/chest.1119754
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PURPOSE: The purpose of the study is to determine if there is a significant difference between male and female pediatric patients' airway resistance at 5Hz via impulse oscillometry and spirometry.

METHODS: We retrospectively reviewed 386 female and 571 male patients between the ages of 4 and 19 in a pediatric pulmonary clinic. We reviewed the percent of predicted value of the airway resistance at 5 Hz via impulse oscillometry and the percent predicted value of the FEV1 via spirometry.

RESULTS: The mean airway resistance via impulse oscillometry at 5 Hz for the female patients was 122.4 percent and for the male patients the mean airway resistance was 110.8 percent. The mean FEV1 was 82.94 percent for the females and 88.29 percent for the males. The females had a significantly higher, p<0.05, percent predicted airway resistance than the males. The males had a significantly higher percent predicted FEV1 than the females, p<0.05.

CONCLUSIONS: As expected, our data showed that there was an inverse relationship between FEV1 and airway resistance at 5 Hz. The significant difference between the males and females was not expected. This difference may be due to characteristics of the sample population.

CLINICAL IMPLICATIONS: There may need to be a reassessment of the predicted FEV1 values as well as airway resistance at 5Hz.

DISCLOSURE: The following authors have nothing to disclose: Stamatia Alexiou, Sneha Taylor, Glenn Hildreth, Kevin Maupin

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