A case of primary COVID-19 pneumonia: plausible airborne transmission of SARS-CoV-2.

Background: The different clinical manifestations, from none to severe, and the variability in efficacy of SARS-CoV-2 diagnosis by upper respiratory tract testing, make diagnosis of COVID-19 and prevention of transmission especially challenging. In addition, the ways by which the virus can most efficiently transmit still remain unclear.

Case Presentation: We report the case a 48-year-old man who presents primary COVID-19 pneumonia.

Isolated left ventricle diverticula: a possible cause of atypical angina?

A 49-year-old woman with atypical chest pain was referred for a multidetector computed tomography examination of the coronary arteries after a positive electrocardiography stress test. No coronary atherosclerotic disease was observed on the coronary computed tomography scan. The only findings were 2 side-by-side basal left ventricle diverticula, suggested as a possible etiology for her symptoms and electrocardiographic changes.

The Graft Imaging to Improve Patency (GRIIP) clinical trial results.

Objective: This trial aimed to determine whether intraoperative graft assessment with criteria for graft revision would decrease the proportion of patients with 1 or more graft occlusions or stenoses or major adverse cardiac events 1 year after coronary artery bypass grafting.

Methods: A single-center, randomized, single-blinded, controlled clinical trial was designed. Patients were randomized to either of 2 groups: intraoperative graft patency assessment using indocyanine-green fluorescent angiography and transit-time flowmetry, with graft revision according to a priori criteria (imaging group), or standard intraoperative management (control group).

Giant right coronary artery aneurysm on 64-MDCT.

An 81-year-old woman was referred for cardiac computed tomography-angiography (CCTA) after an extracardiac mass was found on echocardiography. CCTA found a giant atherosclerotic right coronary artery aneurysm with a maximal diameter of 80 mm, which was compressing the right atrium and right appendage, proximal superior vena cava, right ventricle inlet and tricuspid annulus.

Cardiac CT scan for preoperative planning in a patient with bilateral subclavian stenosis needing coronary artery bypass.

A 61-year-old male vasculopath presented for coronary revascularization and was found to have high-grade bilateral subclavian artery stenosis. The adequacy of the left internal mammary artery for bypass to the left anterior descending artery was in question. Rather than assessing the left internal mammary artery intraoperatively, we performed a preoperative cardiac computed tomography (CT) angiogram.