Ventilation / perfusion scan Pulmonary: utility in the study of hypertension pulmonary and chronic pulmonary embolism
Gammagrafía de ventilación/perfusión pulmonar: utilidad en el estudio de hipertensión pulmonar y embolismo pulmonar crónico
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Chronic thromboembolic pulmonary hypertension (CTPH) is a serious disease with sig- nificant associated morbidity and mortality. Diagnostic images play a fundamental role both in the diagnosis and in the determination of extension, distribution and severity, in order to establish the possibility of surgical management.
Ventilation/perfusion scintigraphy (G V/Q) has a high sensitivity and negative predictive value, and allows to rule out the presence of pulmonary thromboembolism as a cause of pul- monary hypertension and is indicated in the initial study of these patients.
Due to its importance recently highlighted in different national and international ma- nagement guidelines, it is important to familiarize the treating clinicians with the adequate methodology as well as the approach in its interpretation, because in some aspects it is dif- ferent for acute pulmonary thromboembolism. We present two cases in which the study was fundamental in the diagnosis and timely treatment of CTPH with favorable evolution.
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