Clinical efficacy of sildenafil in primary pulmonary hypertension.They had enrolled 20 patients in the placebo group and 20 in the sildenafil group initially.Baquero 2006 was a randomised double-blind placebo controlled trial.The interaction of sildenafil with other selective pulmonary vasodilators warrants further studies.
In this unit, iNO, high frequency ventilation and ECMO were not available.Identification of PDE isozymes in human pulmonary artery and effect of selective PDE inhibitors.
Selection bias (random sequence generation and allocation concealment).Sildenafil and another pulmonary vasodilator vs. another pulmonary vasodilator or placebo.If found effective in randomised controlled trials for short term improvements, long-term data will be needed to ensure safety.For further details see the table Characteristics of Included Studies.This treatment is especially useful in the settings where other treatment approaches are not available.For all the haemodynamic parameters the change from baseline were planned to be assessed at 1, 2, 4, 6, 8, 12, 24 and 48 hours or at nearest times reported by the authors.
Oral sildenafil in infants with persistent pulmonary hypertension of the newborn: a pilot randomized blinded study.
Addition of oral sildenafil to beraprost is a safe and effective therapeutic option for patients with pulmonary hypertension.Currently, the therapeutic mainstay for PPHN is assisted ventilation and administration of inhaled nitric oxide (iNO).Sildenafil in the treatment of PPHN has significant potential especially in resource limited settings.Baquero 2006 reported no grade 3 or 4 intraventricular haemorrhage in any of the infants in either group.Intravenous sildenafil lowers pulmonary vascular resistance in a model of neonatal pulmonary hypertension.Required sample size for such a study would be in the range of approximately 100 to 400 patients.
Changes in systemic vascular resistance index in WUm 2 (absolute values and change from baseline).In this update of our review ( Shah 2007 ), we identified 232 citations, of which eight were duplicates, and 217 did not meet eligibility criteria for detailed screening ( Figure 1 ).Walsh-Sukys MC, Tyson JE, Wright LL, Bauer CR, Korones SB, Stevenson DK et al.Other potential complications include the development of methaemoglobinaemia.High blood pressure can lead to erectile dysfunction, but there are plenty of treatments.The reviewers concluded that more studies of adequate size were necessary ( Kanthapillai 2004 ).A weighted treatment effect was calculated using the RevMan 5.1 package. The treatment effect estimates included typical relative risk (RR), typical risk difference (RD), number needed to treat to benefit (NNTB) or number needed to treat to harm (NNTH) for dichotomous outcomes, and weighted mean difference (WMD) for continuous outcomes.Having said that, it must be noted that mortality was significantly reduced in this meta-analyses (54% in control group and 20% in sildenafil group).By virtue of its selective pulmonary vasodilator effects, inhaled nitric oxide (iNO) is considered the mainstay in the treatment of pulmonary hypertension in term or near term neonates ( Barrington 2001 ).