title: Circulatory changes caused by a closed, negative pressure drainage system after craniotomy.
mesh_terms: D000293:Adolescent; D001919:Bradycardia / Q000209:etiology*; D003399:Craniotomy; D005260:Female; D006801:Humans; D007022:Hypotension / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care; D012535:Scalp; D013396:Suction / Q000009:adverse effects*