Author/Authors :
Karvandian، K نويسنده Assistant Professor, Department of Anesthesiology , , Beigmohammadi، MT نويسنده Critical Care Medicine Fellow, Department of Anesthesiology , , Mahmoodpoor، A نويسنده Assistant Professor, Section of Critical Care Medicine, Department of Anesthesiology, Tabriz University of Medical Sciences, Tabriz, Iran. Telephone: +98 (914) 116-0888, Fax: +98(411) 385-1117 , , Jafarzadeh، A نويسنده Assistant Professor, Department of Anesthesiology , , Abtahi، HR نويسنده Assistant professor, Section of Pulmonology, Department of Internal Medicine, Tehran University of Medical Sciences, Imam Khomeini hospital, Tehran, Iran ,
Abstract :
Background and objective: Because of fixed airway obstruction in patients with laryngeal
tumors, measurement of FEV1 can help in predicting the degree of airway obstruction and
deciding the safe plan for anesthesia.
Materials and methods: 154 patients, 40-80 years old, with ASA class II-III who were
scheduled for elective surgery enrolled in this study. Pulmonary function tests (PFT) was done
before surgery for all patients. They were divided into three groups based on the result of
PFT: Group 1: FEV1 > 2.5 L which received standard anesthesia induction. Group 2:
FEV1=1.5-2.5 L, induction was performed by keeping spontaneous breathing and Group 3:
FEV1 < 1.5 L: which awake intubation was performed with topical anesthesia.
Results: there was significant difference in intubation time and attempts among 3 groups
(8.91.8, 10.7±1.7, 15.6±6.3 sec.p=.000; 1.2±0.5, 1.4± 0.6, 1.7±0.8, p=.002 respectively).
Failed intubations were 3, 4, 9 in three groups respectively, which was not statistically different
(P=0.1).
Conclusion: Due to fixed airway obstruction in patients with laryngeal tumors, FEV1 can be
used as a predictor for classification and choosing a safe method for induction of anesthesia
