title: [Effect of combination of ligustrazine and nitrendipine on hemodynamics in patients with chronic obstructive pulmonary disease].
abstract: OBJECTIVE
  To find the drugs for lowering the pulmonary vascular resistance in patients of chronic obstructive pulmonary disease (COPD) but would not increase its side-effect.
  
  
  METHODS
  Changes of some hemodynamic parameters in 15 patients of COPD in stable stage treated by nitrendipine and ligustrazine were observed by right heart floating catheterization.
  
  
  RESULTS
  The mean pulmonary arterial pressure reduced by 1.4% immediately after the combined treatment, and reduced by 17.0%, 20.0% and 18.0% in 15 mins, 30 mins and 60 mins after treatment. In the responding time, the pulmonary vascular resistance reduced by 15.2%, 36.2%, 43.0% and 34.6%, the systemic vascular resistance reduced by 7.9%, 19.2%, 17.9% and 20.8%, and the cardiac output increased by 15.8%, 22.6%, 22.2%, and 33.8% respectively. The changes of systemic arterial pressure and heart rate were of no statistical significance.
  
  
  CONCLUSIONS
  Combination therapy of nitrendipine and ligustrazine could lower the pulmonary arterial pressure and pulmonary vascular resistance effectively and has a selective effect on pulmonary circulation in patients with COPD.
authors.affiliation: Respiratory Department, Yueyang Municipal First Hospital, Hunan 414000.
authors.forename: C L
authors.initials: CL
authors.lastname: Lin
authors.forename: Z X
authors.initials: ZX
authors.lastname: Zhang
authors.forename: Y J
authors.initials: YJ
authors.lastname: Xu
mesh_terms: D000328:Adult; D000368:Aged; D002121:Calcium Channel Blockers / Q000627:therapeutic use; D004357:Drug Synergism; D004359:Drug Therapy, Combination; D005260:Female; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009568:Nitrendipine / Q000627:therapeutic use*; D029424:Pulmonary Disease, Chronic Obstructive / Q000188:drug therapy* / Q000503:physiopathology; D011719:Pyrazines / Q000627:therapeutic use*; D014665:Vasodilator Agents / Q000627:therapeutic use*
chemical_list: D002121:Calcium Channel Blockers; D011719:Pyrazines; D014665:Vasodilator Agents; D009568:Nitrendipine; C017953:tetramethylpyrazine