Should pulmonary embolism be suspected in exacerbation of chronic obstructive pulmonary disease?

GROUND: The cause of acute exacerbation of chronic obstructive pulmonary disease (COPD) is often difficult to determine. Pulmonary embolism may be a trigger of acute dyspnoea in patients with COPD. AIM: To determine the prevalence of pulmonary embolism in patients with acute exacerbation of COPD.

METHODS: 123 consecutive patients admitted to the emergency departments of two academic teaching hospitals for acute exacerbation of moderate to very severe COPD were included. Pulmonary embolism was investigated in all patients (whether or not clinically suspected) following a standardised algorithm based on d-dimer testing, lower-limb venous ultrasonography and multidetector helical computed tomography scan. RESULTS: Pulmonary embolism was ruled out by a d-dimer value Computed tomography scan showed pulmonary embolism in four patients (3.3%, 95% confidence interval (CI), 1.2% to 8%), including ... more.

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