Abstract:Objective TTo analyze the application effect of contrast transthoracic echocardiography(cTTE), contrast transesophageal echocardiography(cTEE) and contrast transcranial doppler (cTCD) in the diagnosis and interventional occlusion of patent oval foramen.Methods A total of 551 highly suspected patent oval foramen patients were admitted to the Second Hospital of Hebei Medical University from January 2017 to December 2019. All patients underwent cTTE or cTEE combined with cTCD to analyze the diagnostic efficacy using transesophageal echocardiography (TEE) as the "gold standard". All patients were treated with interventional occlusion and followed up for 1 year to check for patient occlusion efficiency, symptom remission rate, and occurrence of postoperative complications.Results There were 525 cases (95.28%) of patent oval foramen examined with TEE, and 21 cases (80.77%) of small atrial septal defect and 5 cases (19.23%) of pulmonary arteriovenous fistula in other 26 cases. When the TEE diagnosis was used as the "gold standard", the sensitivity of cTEE diagnosis (98.67%) and accuracy (98.00%) was higher than that for cTTE (95.05% and 94.92%) (P < 0.05); diagnosis sensitivity (99.24%) and accuracy (98.91%) of cTEE combined with cTCD were higher than those of cTTE combined with cTCD (96.19% and 95.83%) (P < 0.05). After 1 year follow-up, the effective rate of occlusion after 6 months was 81.30%; after 3 months, 34 palpitation, 40 chest tightness, and 48 chest pain had a total incidence of 22.14%; the incidence rate 67 cases of the above symptoms within 6 months was 12.76%; 2 cases still had the above symptoms 1 year after surgery, with incidence rate of 0.38%.Conclusion Both cTTE and cTEE combined with cTCD can diagnose patent oval foramen respectively, but cTEE combined with cTCD has higher diagnostic efficacy and is helpful to guide surgical treatment.