Angiography Of Right Coronary Artery Research Articles

Coronary angiography of right coronary artery in 2020.

Coronary angiography of right coronary artery in 2020.

Coronary angiography of right coronary artery in 2021.

Coronary angiography of right coronary artery in 2021.

A systematic review and meta-analysis of delayed coronary artery access for coronary angiography with or without percutaneous coronary intervention (PCI) in patients who underwent transcatheter aortic valve replacement (TAVR).

Coronary artery disease (CAD) and severe aortic valve stenosis frequently coexist. Given the progressive nature of CAD, silent or non-significant CAD may become symptomatic or functionally relevant years after TAVR. However, there is a paucity of data documenting the feasibility of either coronary angiography and/or PCI after TAVR. We systematically searched Medline, Pubmed, Embase, Cochrane database, Google Scholar, Science Direct, Web of Science, and conference abstracts from conception to March 2020 using OvidSP in TAVR patients undergoing coronary angiography with or without PCI at least 6months after TAVR. Patients and procedural characteristics were summarized. The primary outcome of interest was successful coronary angiography for either the left main coronary artery (LMCA) or right coronary artery (RCA) with or without PCI. Pooled estimates were calculated using a random-effects meta-analysis. The study protocol was registered in PROSPERO. Eleven reports for a total of 696 coronary angiograms and 287 PCI were included in the analysis. Patients were slightly predominantly male, older and had a mean left ventricular ejection fraction of more than 50% with an intermediate STS. The summary estimate rates of successful LMCA and RCA angiography with a Medtronic self-expandable valve (SEV) were 84% (95% CI 73-90%, I2 = 79, p = 0.015) and 69% (95% CI 37-89%, I2 = 86, p = 0.23), respectively, while with the Edwards Lifesciences balloon expandable valve (BEV), the summary estimate rates for successful LMCA and RCA angiography were 94% (95% CI 72-99%, I2 = 66, p = 0.003) and 95% (95% CI 48-99%, I2 = 83, p = 0.05), respectively. The summary estimate rate of successful PCI post TAVR with either a Medtronic SEV or Edwards Lifesciences BEV was 93% (95% CI 86-96%, I2 = 33, p = 0.0001). The overall achievement of a successful coronary angiography with or without PCI in post-TAVR patients is high, with a lower success rate for RCA angiography in patients with the Medtronic SEV Mortality and bleeding did not differ in our analysis.

In-Stent Thrombosis after Antiplatelet Therapy Conversion while Awaiting Coronary Bypass

In-stent thrombosis (IST) is a rare yet dangerous complication that may occur despite optimized coronary intervention in the cardiac catheterization laboratory. This is a case of an 81-year-old man who presented with ST-elevation myocardial infarction. Right coronary artery (RCA) occlusion was suspected. RCA angiography and percutaneous coronary intervention were performed. Complicated left coronary artery disease was subsequently discovered. Per cardiothoracic surgeon request, the patient was transitioned from ticagrelor to clopidogrel therapy in preparation for coronary artery bypass grafting. The patient experienced IST the day before surgery while receiving clopidogrel. We examine this case, which highlights the complexity of antiplatelet therapy choice and the role of genetic testing in evaluation of IST risk.

High Take-off of Right Coronary Artery: An Extremely Rare Case of RCA Anomaly

A 45-year-old man with a past history of aortic valve insufficiency presented with recently increasing chest discomfort. Coronary angiography revealed significant stenosis at the mid-portion of the left anterior descending artery and origin of the first obtuse marginal branch. The right coronary artery (RCA) was faintly seen to be free from significant stenosis. (Selective RCA angiography had not been possible.) At surgery while dissecting between the ascending aorta and the main pulmonary artery, the RCA ostium was incidentally found to be located approximately 10 cm above the aortic annulus and 5 cm above the sinotubular junction, between the medial curve of the ascending aorta and the main pulmonary artery. After coronary artery bypass grafts, we repaired the aortic valve and the RCA remained intact.

Transient precordial ST elevation by a spasm of the conus artery during right coronary angiography

During coronary angiography of right coronary artery (RCA), a catheter wedged into a conus artery, and a remarkable coved-type ST elevation was seen in precordial lead through V1–3. LCA angiography did not show any abnormal findings, but we recognized a slow contrast flow in a conus artery by RCA angiography. The patient was free from chest pain, and a ST elevation was improved. The slow flow of a conus artery was recovered within five minutes. Precordial ST elevation may be caused by a catheter-induced spasm of a conus artery.

Rotational X-ray coronary angiography.

We designed and implemented a digital flat-panel-based rotational X-ray coronary angiography technique hypothesizing that luminal disease could be identified with less radiation exposure and contrast usage compared to conventional angiography. Individuals scheduled for diagnostic coronary angiography were prospectively enrolled. In addition to conventional acquisitions in standard planes, subjects underwent one additional left coronary artery (LCA) or right coronary artery (RCA) rotational (spin) acquisition using a predefined trajectory. Radiation exposure and contrast volume were recorded for each run. Seventy-five subjects were enrolled. When compared with standard five-view cine acquisition, LCA spin angiography with one cranial and one caudal run resulted in 34.38% +/- 13.65% less radiation, 18.98% +/- 4.97% less contrast, and comparable assessment of stenosis severity. One spin acquisition compared with three standard cine acquisitions for RCA angiography resulted in 59.31% +/- 29.07% lower radiation, no significant change in contrast, and comparable assessment of stenosis severity. Rotational X-ray coronary angiography provides comparable visualization of coronary anatomy compared with traditional nonrotational coronary angiography with significantly less radiation exposure and contrast volume.