title: Distal migration of vena cava umbrella during cardiac massage.
mesh_terms: D000368:Aged; D006336:Heart Massage / Q000009:adverse effects*; D006801:Humans; D008297:Male; D011183:Postoperative Complications; D011655:Pulmonary Embolism / Q000517:prevention & control; D014684:Venae Cavae / Q000601:surgery*