Related Experiment Video
Updated: Jun 5, 2026

Left Atrial Stenosis Induced Pulmonary Venous Arterialization and Group 2 Pulmonary Hypertension in Rat
Published on: November 18, 2018
Pulmonary Arteriovenous Malformation Presenting With Acute Dyspnea: A Case Report
1Emergency Department Shin-Kong Wu Ho-Su Memorial Hospital No. 95, Wenchang Rd., Shilin Dist., Taipei City 111045 Taipei City Taiwan m002202@ms.skh.org.tw.
None:
A 65-year-old male presented to the emergency department with acute dyspnea and critically low oxygen saturation (77%), which led to the discovery of an unusual pulmonary arteriovenous malformation (PAVM). Computed tomographic pulmonary angiography revealed a 2.5-cm vascular lesion connecting the right inferior pulmonary artery to the left cardiac atrium, resulting in significant right-to-left shunting. The patient's respiratory symptoms resolved completely after video-assisted thoracoscopic surgical resection, demonstrating the value of comprehensive imaging in diagnosing rare vascular anomalies. This case highlights the clinical significance of unexpected vascular malformations in older adults.
Related Concept Videos
Pulmonary Embolism I: Introduction
Pulmonary Embolism I: Introduction
Pneumothorax-I
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Acute Respiratory Failure-IV
Acute Respiratory Failure-II
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
Atelectasis II: Pathophysiology