title: A comparative review of the efficacy of antihypertensive agents on 24 h ambulatory blood pressure.
abstract: BACKGROUND
  Ambulatory blood pressure (ABP) monitoring has contributed significantly to the diagnosis, prognosis and treatment of hypertension. However, most of the published reviews have not focused on the 24 h efficacy of conventional and new antihypertensive agents as measured by ABP monitoring.
  
  
  OBJECTIVE
  To discuss the importance of 24 h blood pressure control, and to review the antihypertensive efficacy of conventional antihypertensive agents and of angiotensin II type I receptor (AT1R) blockers as assessed by ABP monitoring.
  
  
  METHODS
  The 24 h antihypertensive efficacy of the different classes of agents was reviewed based on clinical, randomized, double-blind trials published in peer review journals. These trials were mainly performed in the authors' research unit but were performed in other centres as well.
  
  
  CONCLUSIONS
  Most antihypertensive agents provided 24 h ABP control. However, in the authors' experience, hydrochlorothiazide, some angiotensin converting enzyme inhibitors and low dosages of the calcium antagonist diltiazem did not permit satisfactory blood pressure reduction as assessed by ABP monitoring in truly hypertensive patients. AT1R blockers and especially those of the new generation characterized by tight and long lasting AT1-receptor binding produced adequate 24 h ABP control and continued effectiveness during the high risk early morning hours.
authors.affiliation: Centre Hospitalier de l'Université Laval, 2705 Boulevard Laurier (S-120), Sainte-Foy, Quebec G1V 4G2, Canada. yves.lacourciere@crchul.laval.ca
authors.forename: Y
authors.initials: Y
authors.lastname: Lacourcière
authors.forename: L
authors.initials: L
authors.lastname: Poirier
authors.forename: J
authors.initials: J
authors.lastname: Lefebvre
mesh_terms: D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D057911:Angiotensin Receptor Antagonists; D000806:Angiotensin-Converting Enzyme Inhibitors / Q000627:therapeutic use*; D000959:Antihypertensive Agents / Q000627:therapeutic use*; D018660:Blood Pressure Monitoring, Ambulatory; D006801:Humans; D006973:Hypertension / Q000188:drug therapy*
chemical_list: D000319:Adrenergic beta-Antagonists; D057911:Angiotensin Receptor Antagonists; D000806:Angiotensin-Converting Enzyme Inhibitors; D000959:Antihypertensive Agents