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  • Title: Multimodal ultrasound imaging for patent foramen ovale and pulmonary arteriovenous malformation in patients with cryptogenic stroke or migraine: A prospective diagnostic study.
    Author: Xu J, Cui F, Zhang H.
    Journal: Medicine (Baltimore); 2024 Sep 27; 103(39):e39791. PubMed ID: 39331868.
    Abstract:
    Right-to-left shunt (RLS) caused by patent foramen ovale (PFO) and pulmonary arteriovenous malformations (PAVM) have been associated with a variety of diseases, and reliable techniques for detecting RLS are essential for diagnosis. This study aimed to compare the diagnostic accuracy of multimodal ultrasound imaging, including transthoracic echocardiography (TTE) plus contrast transthoracic echocardiography (CTTE) and transesophageal echocardiography (TEE) plus contrast transesophageal echocardiography (CTEE) for PFO and PAVM in patients with cryptogenic stroke or migraine. This prospective study enrolled patients with cryptogenic stroke or migraine admitted to First Hospital of Shanxi Medical University between July 2018 and April 2023. The TTE + CTTE + TEE + CTEE multimodal ultrasound imaging was defined as the gold standard. A total of 230 patients with cryptogenic stroke (108) or migraine (122) were enrolled. The TEE + CTEE generated a better area under the receiver operator characteristic (ROC) curves (AUC) than TTE + CTTE [0.995 (0.988-1.000) vs 0.975 (0.767-0.984), P < .001], indicating better identification of PFO and PAVM. The sensitivity and specificity of the TTE + CTTE were 89.4% and 85.7%, respectively, whereas the sensitivity and specificity of TEE + CTEE were 99.1% and 100%, respectively. The missed diagnosis rate of TTE + CTTE and TEE + CTEE was 65.7 % and 12.5%, respectively. The combination of TEE + CTEE may be a more reliable and sensitive tool to detect PFO and PAVM than TTE + CTTE in patients with cryptogenic stroke or migraine.
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