A 60 year old woman was bedridden for 2 months complains of breathlessness & chest pain, chest X-ray is normal.
Next step is: (A) V/Q scan, (B) Echocardiography, (C) Pulmonary wedge angiography, (D) Pulmonary arteriography.
Answer is A. Clinical picture s/o P.embolism Next step should be CT Pulmo angiography - not there in option thus V/Q scan next best.