Study the relationship between the body mass index and duration of mechanical ventilation & complications in mechanically ventilated COPD patients.

Study the effect of obesity on mortality rate of COPD mechanically ventilated patients.

Determine prevalence of obesity in mechanically ventilated COPD patients.

Obesity has become a global epidemic with prevalence rising both in developed and developing countries. The percentage of patients with obesity in the intensive care unit (ICU) can be expected to increase concomitantly or even more since obesity increases the risk for a more severe disease course with more need for ICU admission and mechanical ventilation .

Obesity, especially abdominal obesity (android fat distribution) and severe obesity, results in altered respiratory anatomy and physiology and, therefore, complicated airway management and adapted ventilator settings during mechanical ventilation. Obesity appears to be associated with an increased risk of acute respiratory distress syndrome (ARDS) and infection, mainly pneumonia probably related to an imbalanced production of adipokines. In ventilated patients, obesity increases ICU length of stay and the duration of mechanical ventilation .

Obesity is relatively common among individuals with COPD, corresponding to 20%-35% of patients with COPD. Increasing evidence suggests that obesity is a risk factor for impaired quality of life, exercise intolerance, and suboptimal disease control in COPD .

Inclusion Criteria:

• Adult patients of both genders more than 18 years old admitted at RICU, diagnosed COPD and need mechanical ventilation from August 2023 to August 2024.

Exclusion Criteria:

patients less than 18 years old. patients who refused to participate in the research. patients with missing data.

Adult patients of both genders more than 18 years old admitted at RICU, diagnosed COPD and need mechanical ventilation from August 2023 to August 2024.