Which investigation is most diagnostic of pulmonary emboli?: (A) CTPA, (B) V/P scan, (C) HRCT, (D) D- Dimer Assay
Answer is A. Computed Tomography Pulmonary Angiography (CTPA) is the initial imaging modality of choice for stable patients with a suspected pulmonary embolism. Pulmonary angiography shows emboli directly but it is an invasive procedure CT is noninvasive, cheaper and widely available. so, it's the most diagnostic investigation of choice. - D-Dimer is the screening investigationin PE pt's