An inadvertent vent in the right ventricle (RV) resulted during dissection of a deep intramyocardial left anterior descending coronary artery (LAD). during off-pump coronary artery bypass grafting (OPCAB). led to pulmonary artery air embolism and hemodynamic instability. requiring conversion to cardiopulmonary bypass (CPB) prior to repair. https://jalyttlers.shop/product-category/bed-frames/