title: Effect of short-term positive airway pressure on blood pressure in controlled hypertensive patients with obstructive sleep apnoea syndrome: a prospective cohort study.
abstract: Obstructive sleep apnoea syndrome (OSAS) is associated with cardiovascular disease, especially in patients with high blood pressure. Continuous positive airway pressure (CPAP) seems to contribute to blood pressure control in patients with OSAS, mainly those with uncontrolled hypertension. However, the effect of CPAP on controlled hypertensive patients with OSAS is not known.
  
  
  
  To evaluate the effects of CPAP on blood pressure of controlled hypertensive patients with OSAS.
  
  
  
  Prospective cohort study.
  
  
  
  36 recently diagnosed patients with OSAS and hypertension controlled with oral antihypertensive medication.
  
  
  
  CPAP was performed for 5 days. Systolic and diastolic blood pressure were recorded at baseline and 5 days later using 24 h ambulatory blood pressure measurement.
  
  
  
  Mean (SD) 24 h systolic blood pressure was reduced from 128.9 (3.4) to 126.5 (3.5), p<0.001 and mean (SD) 24 h diastolic blood pressure was reduced from 86.9 (3.3) to 84.8 (3.3), p<0.001. A reduction in the proportion of 'non-dippers' in the participants was registered (from 40.6% at baseline to 18.2%).
  
  
  
  A short course of CPAP may reduce systolic and diastolic blood pressure in patients with OSAS and controlled hypertension.
  
  
  
  RBR - 386qsg; Brazilian Clinical Trials Registry (REBEC).
authors.affiliation: Universidade Federal da Paraíba-UFPB, Joao Pessoa, Paraíba, Brazil Clínica Esperança, Avenida Esperança 780, Manaíra, João Pessoa, Paraíba, Brazil.
authors.forename: José Heriston
authors.initials: JH
authors.lastname: de Morais Lima
authors.affiliation: Universidade Federal da Paraíba-UFPB, Joao Pessoa, Paraíba, Brazil Clínica Esperança, Avenida Esperança 780, Manaíra, João Pessoa, Paraíba, Brazil.
authors.forename: Amilton
authors.initials: A
authors.lastname: da Cruz Santos
authors.affiliation: Clínica Esperança, Avenida Esperança 780, Manaíra, João Pessoa, Paraíba, Brazil Centro Universitário de João Pessoa-UNIPÊ, Joao Pessoa, Paraíba, Brazil.
authors.forename: Sandra Emília Benício
authors.initials: SE
authors.lastname: Barros
authors.affiliation: Clínica Esperança, Avenida Esperança 780, Manaíra, João Pessoa, Paraíba, Brazil Centro Universitário de João Pessoa-UNIPÊ, Joao Pessoa, Paraíba, Brazil.
authors.forename: Pollyana
authors.initials: P
authors.lastname: Soares de Abreu Morais
authors.affiliation: Clínica Esperança, Avenida Esperança 780, Manaíra, João Pessoa, Paraíba, Brazil Instituto de Medicina Integral Prof. Fernando Figueira-IMIP, Recife, Brazil.
authors.forename: José Natal
authors.initials: JN
authors.lastname: Figueiroa
authors.affiliation: Instituto de Medicina Integral Prof. Fernando Figueira-IMIP, Recife, Brazil.
authors.forename: João Guilherme B
authors.initials: JG
authors.lastname: Alves
mesh_terms: D018660:Blood Pressure Monitoring, Ambulatory / Q000379:methods*; D002318:Cardiovascular Diseases / Q000503:physiopathology / Q000517:prevention & control*; D045422:Continuous Positive Airway Pressure / Q000379:methods; D005260:Female; D006801:Humans; D006973:Hypertension / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D017286:Polysomnography / Q000379:methods*; D011446:Prospective Studies; D020181:Sleep Apnea, Obstructive / Q000150:complications / Q000503:physiopathology / Q000628:therapy*; D013997:Time Factors; D016896:Treatment Outcome
keywords: SLEEP MEDICINE