END-TIDAL CARBON DIOXIDE MONITORING
DURING FLEXIBLE FIBEROPTIC BRONCHOSCOPY

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RAZI E.; MOUSAVI SEYED GHOLAM ABAS; ANSARIN KH.

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Journal Paper

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Journal: ARCHIVES OF IRANIAN MEDICINE Year:2001 | Volume:4 | Issue:2 Page(s): 54-58

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Information Journal Paper

Title

END-TIDAL CARBON DIOXIDE MONITORING DURING FLEXIBLE FIBEROPTIC BRONCHOSCOPY

Author(s)

RAZI E. | MOUSAVI SEYED GHOLAM ABAS | ANSARIN KH. | Issue Writer Certificate

Keywords

END-TIDAL PCO 2 • FIBEROPTIC BRONCHOSCOPY • SPO2

Abstract

Background-In recent years, flexible fiberoptic bronchoscopy (FFB) has been applied for diagnostic and therapeutic purposes. Premedication along with the passage of FFB into the airway, even in the presence of supplemental oxygen, may cause hypoventilation leading to hypoxia and desaturation. Arterial oxygen saturation is usually monitored with pulse oximetry (Spo2) during FFB; end-tidal Pco2 (ET-Pco2) monitoring is not routinely used. Methods-Two-hundred patients, ages 53±19 years (mean±SD), underwent FFB and received supplemental oxygen during various stages of FFB: 1-before and during instillation of lidocaine on the vocal cords, 2-during passage of instrument into the trachea, RMB, IMB, 3-during bronchoalveolar lavage, bronchial biopsy, transbronchial biopsy (TBB), and 4-at the final stages of FFB. ET-Pco2 changes were studied with a capnograph and Spo2 using a pulse oximeter simultaneously and the results were recorded. Results-Mean ET-Pco2 significantly decreased from 28.7±4.5 mmHg before FFB to 28±5.7 mmHg, 27.9±5.5 mmHg, 27.5±5.6 mmHg, 27.1±4.5 mmHg, 27.9±5.3 mmHg during bronchoscopy of the right main bronchus (RMB), left main bronchus (LMB), bronchial washing, bronchial biopsy and transbronchial biopsy (TBB), and at the termination of FFB, respectively (p<0.05). In 118 patients (59%), the decrease of ET-Pco2 was equal to or greater than 4 mmHg; in 105 patients (52.5%) the amount of decrease in Spo2 was 5% and in 32 patients (16%), Spo2 decreased 10%. No correlation was found between decreasing ETPco2 and Spo2 during the procedure. Conclusion- ET-Pco2 and Spo2 decreased during bronchoscopy. We also speculate that this reflects airway obstruction by the instrument. Further studies and more experimental analysis in this field is recommended

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APA: Copy

RAZI, E., MOUSAVI, SEYED GHOLAM ABAS, & ANSARIN, KH.. (2001). END-TIDAL CARBON DIOXIDE MONITORING DURING FLEXIBLE FIBEROPTIC BRONCHOSCOPY. ARCHIVES OF IRANIAN MEDICINE, 4(2), 54-58. SID. https://sid.ir/paper/279861/en

Vancouver: Copy

RAZI E., MOUSAVI SEYED GHOLAM ABAS, ANSARIN KH.. END-TIDAL CARBON DIOXIDE MONITORING DURING FLEXIBLE FIBEROPTIC BRONCHOSCOPY. ARCHIVES OF IRANIAN MEDICINE[Internet]. 2001;4(2):54-58. Available from: https://sid.ir/paper/279861/en

IEEE: Copy

E. RAZI, SEYED GHOLAM ABAS MOUSAVI, and KH. ANSARIN, “END-TIDAL CARBON DIOXIDE MONITORING DURING FLEXIBLE FIBEROPTIC BRONCHOSCOPY,” ARCHIVES OF IRANIAN MEDICINE, vol. 4, no. 2, pp. 54–58, 2001, [Online]. Available: https://sid.ir/paper/279861/en

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