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  • Title: Inhaled nitric oxide therapy after Fontan-type operations.
    Author: Yoshimura N, Yamaguchi M, Oka S, Yoshida M, Murakami H, Kagawa T, Suzuki T.
    Journal: Surg Today; 2005; 35(1):31-5. PubMed ID: 15622461.
    Abstract:
    PURPOSE: Inhaled nitric oxide (NO) therapy is a newly developed strategy designed to reduce pulmonary vascular resistance after the Fontan-type operation. We reviewed our experience to evaluate its efficacy and true indications. METHODS: We retrospectively examined 47 children who received inhaled NO therapy after the Fontan-type operation between August 1996 and December 2002. The maximal dose of NO ranged from 5 to 30 ppm (median 10 ppm), and the duration of inhaled NO therapy ranged from 5 h to 52 days (median 2 days). RESULTS: Inhaled NO significantly decreased the central venous pressure (CVP), from 16.2 +/- 2.2 to 14.6 +/- 2.2 mmHg (P < 0.0001), and the transpulmonary pressure gradient between the CVP and left atrial pressure, from 9.9 +/- 2.9 to 8.4 +/- 2.7 mmHg (P < 0.0001). It also increased the systolic systemic arterial pressure from 71.9 +/- 15.2 to 76.8 +/- 14.5 mmHg (P < 0.05). In 26 patients with additional fenestration, inhaled NO led to a significant improvement in SaO(2) from 90.1% +/- 9.6% to 93.3% +/- 7.9% (P < 0.01). However, patients with a CVP <15 mmHg or a transpulmonary pressure gradient <8 mmHg, or both, after the Fontan-type operation, showed no significant changes in hemodynamics during inhaled NO therapy. CONCLUSIONS: We propose that a CVP >/=15 mmHg or a transpulmonary pressure gradient >/=8 mmHg, or both, after Fontan-type operations are appropriate indications for inhaled NO therapy.
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