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A meta-analysis of randomized controlled trials in pulmonary arterial hypertension Galie N; Manes A; Negro L; Palazzini M; Bacchi-Reggiani ML; Branzi AEur Heart J 2009[Feb]; 30 (4): 394-403AIMS: There is no cure for pulmonary arterial hypertension, but current approved treatment options include prostanoids, endothelin-receptor antagonists, and phosphodiesterase type-5 inhibitors. The effect on survival of these compounds has not been appropriately assessed in individual trials because of small sample size and short duration. We performed a meta-analysis of all randomized controlled trials with drugs published in this condition. METHODS AND RESULTS: Trials were searched in the Medline database from January 1990 to October 2008. The primary analysis included only studies with a placebo comparator arm, the sensitivity analysis also included studies comparing two active treatment arms. The main outcome measure was all-cause mortality. Twenty-one trials were included in the primary analysis (3140 patients) and two additional studies (59 patients) were included in the sensitivity analysis. Average duration of the trials was 14.3 weeks. All-cause mortality rate in the control group was 3.8%. Active treatments were associated with a reduction in mortality of 43% (RR 0.57; 95% CI 0.35-0.92; P = 0.023); the sensitivity analysis confirmed a reduction in mortality of 38% (RR 0.62; 95% CI 0.39-1.00; P = 0.048). CONCLUSION: The results of this meta-analysis suggest an improvement of survival in the patients treated with the targeted therapies approved for pulmonary arterial hypertension.|Antihypertensive Agents/*therapeutic use[MESH]|Exercise Test[MESH]|Exercise Tolerance/drug effects[MESH]|Female[MESH]|Hemodynamics/drug effects[MESH]|Hospitalization/statistics & numerical data[MESH]|Humans[MESH]|Hypertension, Pulmonary/*drug therapy/mortality/physiopathology[MESH]|Male[MESH]|Prostaglandins/therapeutic use[MESH]|Randomized Controlled Trials as Topic/methods[MESH]|Survival Analysis[MESH]|Treatment Outcome[MESH] |
