Ultrasound assessment of diaphragm thickness in mechanically ventilated patients suffering from obstructive pulmonary disease and its relationship with outcomes of mechanical ventilation and mechanical parameters of lungs

Mohammad Reza Ghaffary; Amirreza Jahanshahi; Shamsi Ghaffari; Yaghoub Seifi

doi:10.53730/ijhs.v5nS2.13881

Authors

Mohammad Reza Ghaffary Associate Professor of Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
Amirreza Jahanshahi Department of radiology, imam Reza hospital Tabriz University of Medical Sciences, Tabriz
Shamsi Ghaffari Shamsi Ghaffari, Associate Professor of Pediatric Cardiology, Medical Faculty, Tabriz University, Tabriz, Iran
Yaghoub Seifi Internal medicine resident in Imam Reza hospital Tabriz Iran

Keywords:

ultrasound, weaning, intubation, extubation

Abstract

Introduction: Successful weaning from the ventilator depends on several factors including muscular, cardiac, respiratory, and metabolic strength. Acquired weakness of diaphragm muscle caused by mechanical ventilation is one of the reasons for failure to wean patients from ventilators. Meanwhile, it has been shown that the thickening fraction (TF) and ultrasound of the diaphragm are proper non-invasive indicators for making decisions on weaning patients from the ventilator. Methodology: Mechanically ventilated patients with chronic obstructive pulmonary disease who had been admitted to pulmonary intensive care units during a period of one year were selected for this study. Through statistical consultation, sixty patients were examined for the study. There was no gender difference in the number of patients. After selecting the patients, all of them underwent a B-mode ultrasound with a linear probe of 9 to 12 megahertz on the second day after intubation in the supine position. The thickness of the diaphragm in all patients was measured at the end of exhalation and in the space between the 9th and 10th ribs, between the anterior and middle axillary lines, and the results were compared between the individuals in two ways: successful and unsuccessful weaning.

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