title: Strain gauge plethysmography: an aid in the cardiac study unit.
mesh_terms: D001808:Blood Vessels / Q000187:drug effects; D006493:Heparin / Q000494:pharmacology; D006801:Humans; D005996:Nitroglycerin / Q000494:pharmacology; D010991:Plethysmography / Q000295:instrumentation*; D011674:Pulse / Q000187:drug effects
chemical_list: D006493:Heparin; D005996:Nitroglycerin