Investigations
The arterial blood oxygen saturation was 93%. Arterial blood gas analysis was normal, and blood and urine investigations showed essentially normal results. Electrocardiography was normal. Suspecting foreign body aspiration (FBA), a high-resolution computed tomography (HRCT) of the chest was conducted, which revealed the presence of an oval, relatively dense object measuring approximately 8 x 7 mm, likely causing partial obstruction of the bronchus (Figure 1A ). Additionally, there was partial atelectasis of the left upper lobe, with the rest of the lungs showing mild emphysematous changes (Figure 1B ).