Guide Extension-Facilitated Ostial Stenting (GEST) During Primary Coronary Angioplasty in a Patient With ST-Segment Elevation Myocardial Infarction: A Case Report.

The guide extension-facilitated ostial stenting (GEST) technique uses a guide extension catheter (GEC) to improve stent delivery during primary coronary angioplasty (PCI). GECs are used for stent delivery into the coronary arteries of patients with difficult anatomy due to tortuosity, calcification, or chronic total occlusion (CTO) vessels. Stent and balloon placement has become challenging in patients with increasing lesion complexity due to tortuosity, vessel morphology, length of the lesion, and respiratory movements.

Role of Noncoding RNA in Pulmonary Arterial Hypertension and Potential Drug Therapeutic Target.

Pulmonary arterial hypertension (PAH) is a devastating disease without effective drugs available for its treatment. An in-depth exploration of the pathogenesis of PAH, as well as inquiry into potential therapeutic targets, remains an urgent issue. Non-coding RNAs (ncRNAs) have arisen as key players in malignant tumors, cardiovascular diseases and more recently in PAH progression and development.