title: Commonly used respiratory and pharmacologic interventions in the echocardiography laboratory.
authors.affiliation: LSU School of Medicine, New Orleans, Louisiana, USA.
authors.forename: Brendan
authors.initials: B
authors.lastname: Wesley Reagan
authors.forename: Frederick
authors.initials: F
authors.lastname: Helmcke
authors.forename: Edmund
authors.initials: E
authors.lastname: Kenneth Kerut
mesh_terms: D004452:Echocardiography / Q000379:methods*; D006331:Heart Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology; D006801:Humans; D009566:Nitrates; D000439:Pentanols; D011187:Posture; D015203:Reproducibility of Results; D014636:Valsalva Maneuver; D016276:Ventricular Function / Q000502:physiology
chemical_list: D009566:Nitrates; D000439:Pentanols; C036285:amyl nitrate