Pulmonary hypertension secondary to left-sided heart disease: a cause for ventilation-perfusion mismatch mimicking pulmonary embolism.
Ventilation-perfusion (V/Q) scans are commonly performed in patients with suspected pulmonary thromboembolism (PE). V/Q mismatch is typically attributed to PE. We describe a case in which a V/Q scan performed on a patient with advanced hypertrophic obstructive cardiomyopathy showed large areas of V/Q mismatch not due to PE. The mismatch was due to pulmonary hypertension secondary to left-sided heart disease. The pathophysiology is briefly reviewed.
Division of Medical Imaging, Flinders Medical Centre, Bedford Park, Adelaide SA 5042, Australia.
V W
VW
Au
D N
DN
Jones
J P
JP
Slavotinek
D000328:Adult; D002312:Cardiomyopathy, Hypertrophic / Q000150:complications / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000000981:diagnostic imaging* / Q000209:etiology; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D014057:Tomography, X-Ray Computed