Improved survival among patients with Eisenmenger syndrome receiving advanced therapy for pulmonary arterial hypertension.
BACKGROUND
Advanced therapy (AT) for pulmonary arterial hypertension in the context of congenital heart disease (Eisenmenger syndrome) improves pulmonary hemodynamics, functional class, and the 6-minute walk test. We examined the potential effect of AT on survival in this population.


RESULTS
Data on all Eisenmenger patients attending our center over the past decade were collected. Survival rates were compared between patients on and off AT with the use of a modified version of the Cox model, which treats AT as a time-varying covariate. Baseline differences were adjusted for the use of propensity scores. A total of 229 patients (aged 34.5 + or - 12.6 years; 35.4% male) were included. The majority had complex anatomy, and 53.7% were in New York Heart Association class > or = III at baseline assessment. Mean resting saturations were 84.3%. Sixty-eight patients (29.7%) either were on AT or had AT initiated during follow-up. During a median follow-up of 4.0 years, 52 patients died, only 2 of them while on AT. Patients on AT were at a significantly lower risk of death, both unadjusted and after adjustment for baseline clinical differences by propensity score regression adjustment (C statistic=0.80; hazard ratio, 0.16; 95% confidence interval, 0.04 to 0.71; P=0.015) and propensity score matching (hazard ratio, 0.10; 95% confidence interval, 0.01 to 0.78; P=0.028).


CONCLUSIONS
AT for pulmonary arterial hypertension in a contemporary cohort of adults with Eisenmenger syndrome was associated with a lower risk of death. Survival benefits should be considered together with improved hemodynamics and functional class when decisions are made about AT in this population.
Dimopoulos
Konstantinos
K
Adult Congenital Heart Centre and Centre for Pulmonary Hypertension, Royal Brompton Hospital, London, UK.
Inuzuka
Ryo
R
Goletto
Sara
S
Giannakoulas
Georgios
G
Swan
Lorna
L
Wort
Stephen J
SJ
Gatzoulis
Michael A
MA
D000328:Adult; D004541:Eisenmenger Complex / Q000401:mortality*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D006976:Hypertension, Pulmonary / Q000188:drug therapy* / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models; D011652:Pulmonary Circulation / Q000187:drug effects; D012189:Retrospective Studies; D012307:Risk Factors; D014665:Vasodilator Agents / Q000627:therapeutic use*; D055815:Young Adult
D014665:Vasodilator Agents