title: Results of one-year anticoagulation in patients with newly detected chronic thromboembolic pulmonary hypertension not treated with pulmonary endarterectomy.
abstract: BACKGROUND
  Currently pulmonary endarterectomy is considered the method of choice in patients with chronic thromboembolic pulmonary hypertension (CTEPH). It is not known if this option should be recommended in all suitable patients as it is highly variable with respect to prognosis. There is also doubt about selection of adequate time to refer patients with CTEPH for surgery.
  
  
  OBJECTIVE
  To establish whether some patients with CTEPH may clinically benefit from isolated anticoagulation with drugs and if the use of anticoagulation may have any impact on the time of patient referral for pulmonary endarterectomy.
  
  
  METHODS
  The prospective analysis involved 29 patients (9 male, 20 female) aged 37 to 82 years, with pulmonary arterial systolic pressure ranging from 39 to 133 mmHg and newly diagnosed CTEPH who had not been treated with pulmonary endarterectomy and were not receiving anticoagulation. Survival, functional status according to NYHA classification, duration of thromboembolism, exercise tolerance and echocardiographic parameters of right ventricular overload before and at one year after initiation of therapy with anticoagulants were evaluated.
  
  
  RESULTS
  During follow-up, 3 patients with PASP ranging from 120 to 133 mmHg died. In 26 patients with PASP 39-115 mmHg, who survived, improvement in echocardiographic parameters of right ventricular overload, better exercise tolerance as well as functional status according to NYHA classification was observed. In 12 survivors, pulmonary pressure returned to normal.
  
  
  CONCLUSIONS
  The results of this study suggest that favourable effects of isolated anticoagulation are likely in patients with newly detected CTEPH, mild and moderate baseline pulmonary hypertension and acceptable exercise tolerance. They also indicate the necessity of anticoagulation in these patients prior to possible referral for pulmonary endarterectomy.
authors.affiliation: Oddział Kardiologii, Wojewódzki Szpital Specjalistyczny, ul. Kamieńskiego 73a, 51-124 Wrocław.
authors.forename: Renata
authors.initials: R
authors.lastname: Romaszkiewicz
authors.forename: Jerzy
authors.initials: J
authors.lastname: Lewczuk
authors.forename: Piotr
authors.initials: P
authors.lastname: Piszko
authors.forename: Jacek
authors.initials: J
authors.lastname: Jagas
authors.forename: Lucyna
authors.initials: L
authors.lastname: Lenartowska
authors.forename: Bartosz
authors.initials: B
authors.lastname: Ludwik
authors.forename: Wiesława
authors.initials: W
authors.lastname: Sawa
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Wrabec
mesh_terms: D000074:Acenocoumarol / Q000627:therapeutic use*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000925:Anticoagulants / Q000627:therapeutic use*; D002908:Chronic Disease; D004691:Endarterectomy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology / Q000517:prevention & control*; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D011655:Pulmonary Embolism / Q000150:complications / Q000188:drug therapy* / Q000601:surgery*; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D000925:Anticoagulants; D000074:Acenocoumarol