title: Cardiac massage: how vigorous.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D006336:Heart Massage / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011312:Pressure / Q000009:adverse effects; D012253:Rib Fractures / Q000209:etiology