THE RELATIONSHIP BETWEEN PEAK EXPIRATORY FLOW RATE (PEFR) BEFORE BRONCHOSCOPY AND ARTERIAL OXYGEN DESATURATION DURING BRONCHOSCOPY

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ATARAN D.; TOWHIDI M.; AMINI MAHNAZ; TOUSI M.

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Journal: Iranian Journal of Basic Medical Sciences Year:2007 | Volume:9 | Issue:4 (32) Page(s): 223-230

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Title

THE RELATIONSHIP BETWEEN PEAK EXPIRATORY FLOW RATE (PEFR) BEFORE BRONCHOSCOPY AND ARTERIAL OXYGEN DESATURATION DURING BRONCHOSCOPY

Author(s)

ATARAN D. | TOWHIDI M. | AMINI MAHNAZ | TOUSI M. | Issue Writer Certificate

Keywords

BRONCHOSCOPYQ4

O2 DESATURATIONQ3

PEAK EXPIRATORY FLOW RATEQ3

Abstract

ObjectiveA significant reduction in arterial blood oxygen saturation during fiberoptic BRONCHOSCOPY has been proved but it is not yet known whether all patients need supplemental oxygen during this procedure. The aim of this study is to examine the relationship between PEFR before BRONCHOSCOPY and oxygen desaturation during BRONCHOSCOPY.Material and Methods Measurement of PEFR (% predicted) performed before BRONCHOSCOPY and arterial O2 desaturation was assessed with a pulse oximeter during BRONCHOSCOPY. Study performed on 66 patients with a median age of 53 years, who had been referred to our BRONCHOSCOPY unit. None of the patients received supplemental oxygen before the procedure.Results39 cases (59%) had an episode of O2 desaturation during BRONCHOSCOPY. Of them 25 cases (38%) had sustained O2 desaturation, requiring oxygen therapy while 14 cases (21%) had momentary desaturation (<20s) not requiring O2 therapy. Oxygen therapy was administered in 58 % of cases with PEFR % < 60 and in 83 % of cases with PEFR % less than 45 (p=0.008 and 0.001, respectively). We also observed a significant fall in mean O2 saturation during BRONCHOSCOPY (88±%4) compared to preBRONCHOSCOPY levels (95±2%) (p<0.0001 ).ConclusionIt is concluded that PEFR % < 60 and especially < 45 is a reliable predictor ofhypoxemia and the need to O2 therapy during BRONCHOSCOPY.

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APA: Copy

ATARAN, D., TOWHIDI, M., AMINI, MAHNAZ, & TOUSI, M.. (2007). THE RELATIONSHIP BETWEEN PEAK EXPIRATORY FLOW RATE (PEFR) BEFORE BRONCHOSCOPY AND ARTERIAL OXYGEN DESATURATION DURING BRONCHOSCOPY. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, 9(4 (32)), 223-230. SID. https://sid.ir/paper/392512/en

Vancouver: Copy

ATARAN D., TOWHIDI M., AMINI MAHNAZ, TOUSI M.. THE RELATIONSHIP BETWEEN PEAK EXPIRATORY FLOW RATE (PEFR) BEFORE BRONCHOSCOPY AND ARTERIAL OXYGEN DESATURATION DURING BRONCHOSCOPY. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES[Internet]. 2007;9(4 (32)):223-230. Available from: https://sid.ir/paper/392512/en

IEEE: Copy

D. ATARAN, M. TOWHIDI, MAHNAZ AMINI, and M. TOUSI, “THE RELATIONSHIP BETWEEN PEAK EXPIRATORY FLOW RATE (PEFR) BEFORE BRONCHOSCOPY AND ARTERIAL OXYGEN DESATURATION DURING BRONCHOSCOPY,” IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES, vol. 9, no. 4 (32), pp. 223–230, 2007, [Online]. Available: https://sid.ir/paper/392512/en

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