Two of the top pieces of content in July included the FDA clearance for the new Watchman FLX left atrial appendage occluder (left), which includes a video interview with one of the trial investigators. COVID-19 content remained among the top content in July, and one story explained the odd pattern of cardiac cell death in COVID-19 patient autopsies.

Left, a 3-D rendering of a heart from a cardiac CT exam. Right, a lung-CT exam showing the heart and ground glass lesions in the lungs of a COVID-19 patient. CT has become a front-line imaging modality in the COVID era because it offers both cardiac and lung information to help determine a patients disposition with chest pain, COVID-19 and COVID-caused myocarditis and pulmonary embolism.

Figure B — Top panel, neutrophils noted in collections within small vessels (blue arrow), plump endothelial cells (yellow arrowhead) and a single perivascular dying myocyte (blue arrowhead). Bottom panel, single myocyte undergoing degeneration (blue arrowhead) and plump endothelial cell (yellow arrowhead). Figure C — Electron microscopy, showing particles of SARS-CoV-2 virus present within a cardiac endothelial cell (blue arrowheads), but not present in neighboring cardiac myocyte (left side of image). Images from Circulation.