Background: Ischemia with no obstructive coronary artery disease (INOCA) is common and has an adverse prognosis. We set out to describe the natural history of symptoms and ischemia in INOCA. Methods: CIAO-ISCHEMIA (Changes in Ischemia and Angina over One year in ISCHEMIA trial screen failures with INOCA) was an international cohort study conducted from 2014-2019 involving angina assessments (Seattle Angina Questionnaire [SAQ]) and stress echocardiograms 1-year apart. This was an ancillary study that included patients with history of angina who were not randomized in the ISCHEMIA trial. Stress-induced wall motion abnormalities were determined by an echocardiographic core laboratory blinded to symptoms, coronary artery disease (CAD) status and test timing. Medical therapy was at the discretion of treating physicians. The primary outcome was the correlation between changes in SAQ Angina Frequency score and change in echocardiographic ischemia. We also analyzed predictors of 1-year changes in both angina and ischemia, and compared CIAO participants with ISCHEMIA participants with obstructive CAD who had stress echocardiography before enrollment, as CIAO participants did. Results: INOCA participants in CIAO were more often female (66% of 208 vs. 26% of 865 ISCHEMIA participants with obstructive CAD, p<0.001), but the magnitude of ischemia was similar (median 4 ischemic segments [IQR 3-5] both groups). Ischemia and angina were not significantly correlated at enrollment in CIAO (p=0.46) or ISCHEMIA stress echocardiography participants (p=0.35). At 1 year, the stress echocardiogram was normal in half of CIAO participants and 23% had moderate or severe ischemia (≥3 ischemic segments). Angina improved in 43% and worsened in 14%. Change in ischemia over one year was not significantly correlated with change in angina (rho=0.029). Conclusions: Improvement in ischemia and improvement in angina were common in INOCA, but not correlated. Our INOCA cohort had a similar degree of inducible wall motion abnormalities to concurrently enrolled ISCHEMIA participants with obstructive CAD. Our results highlight the complex nature of INOCA pathophysiology and the multifactorial nature of angina. Clinical Trial Registration: URL: https://clinicaltrials.gov Unique Identifier: NCT02347215
MPI greater than 0.50 indicates that RV function is abnormal and a value of PTASV > 17.25 cm/sec indicates normal RV function.
Transcatheter aortic valve replacement (TAVR) is well established for patients who cannot undergo surgery (Leon et al., N Engl J Med 2010;363:1597) or are high risk for surgery (Smith et al., N Engl J Med 2011;364:2187-2198). Experience with the TAVR procedure has led to recent reports of successful transcatheter mitral valve replacement (TMVR) procedures (Cheung et al., J Am Coll Cardiol 2014;64:1814; Seiffert et al., J Am Coll Cardiol Interv 2012;5:341-349) separately or simultaneously with the TAVR. However, these reports were of simultaneous valve-in-valve procedures (Cheung Anson, et al. J Am Coll Cardiol 2013;61:1759-1766). A recent report from Portugal also reported simultaneous transpical implantation of an inverted transcatheter aortic valve-in-ring in the mitral position and transcatheter aortic valve (Hasan et al., Circulation 2013;128:e74-e76). There has been an experience of TMVR only in native mitral valve for mitral valve stenosis, but none in both aortic and mitral valves. We report the first in human case of simultaneous transapical TAVR and TMVR in native valves secondary to valvular stenosis. Our patient was not a candidate for percutaneous balloon mitral valvuloplasty secondary to a high Wilkins Score. Sizing of the aortic valve was based on the transesophageal echocardiogram (TEE), whereas sizing of the mitral valve was based on TEE measurements and balloon inflation during left ventriculography. © 2015 Wiley Periodicals, Inc.
A 58-year-old male presented with severe substernal chest pain along with bilateral lower extremity pain. He was tachycardic, tachypneic, and hypoxic with tender right calf. Electrocardiogram showed ST elevation in anterior-lateral leads. Emergency coronary angiography revealed widely patent proximal left anterior descending (LAD) artery and total distal occlusion with an abrupt cut-off. The remaining coronary arteries did not have significant disease. An Export aspiration catheter was used and thrombus was aspirated from the LAD with return of TIMI flow grade 3 and normalization of the ST elevations. Doppler ultrasound revealed deep vein thrombosis; transthoracic echocardiogram using agitated saline echocontrast showed a patent foramen ovale. Nearly 5% of patients with ST elevation myocardial infarction do not have demonstrable atherosclerosis by coronary angiography; paradoxical coronary embolism is among the leading causes in such cases. Paradoxical embolism to the coronary tree is under diagnosed and its antemortem diagnosis is difficult. Information regarding appropriate management of myocardial infarction due to coronary embolism is scant. Aspiration of intracoronary thrombus provides good clinical results, avoiding clot fragmentation and balloon injury associated with angioplasty. We present a rare case of antemortem diagnosis of paradoxical embolism to the coronary artery successfully treated with aspiration alone.
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