Respiratory distress and poor oxygenation caused by pneumonia has long been a major concern of healthcare providersleading to respiratory distress and poor oxygenation that consequently results in poor prognosis and prolonged hospital stay. This is why physical therapists are inclined towards improving patients' symptoms and oxygenation using various therapeutic measures. This study aims at comparing the effect of flow versus volume incentive spirometers on arterial blood gases in patients diagnosed with bacterial pneumonia. Forty male patients, aged between 50 and 60 years and diagnosed with bacterial bronchopneumonia participated in this study and were randomized into two equal groups in numbers (A and B). The former used flow inventive spirometers and the latter used volume spirometers. At the end of the study duration, arterial blood gases of both groups were compared. Groups A and B both showed significant increase in PaO2 and SPO2 (p <= 0.05). However, the latter showed more improvement in both variables (27.1% and 6.6% respectively) compared to (14.2% and 3.1% respectively) in the former group. CONCLUSION: Volume incentive spirometers are more effective than flow incentive spirometers in improving arterial blood gases in patients with bacterial bronchopneumonia.

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