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Acetylcholine Re-Challenge After Intracoronary Nitroglycerine Administration
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Does sodium nitroprusside decrease the incidence of atrial fibrillation after myocardial revascularization?: a pilot

Raif Cavolli1, Kaan Kaya, Alp Aslan

  • 1Department of Cardiovascular Surgery, Umut Heart Hospital, GMK Bulvari, Ozveren Sok. No. 17, Maltepe, 06570, Ankara, Turkey. raif.cavolli@gmail.com

Circulation
|July 16, 2008
PubMed
Summary
This summary is machine-generated.

Sodium nitroprusside (SNP) significantly reduced the incidence and duration of atrial fibrillation (AF) after coronary artery bypass grafting (CABG). This nitric oxide donor shows promise in preventing postoperative AF, a common complication.

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Area of Science:

  • Cardiovascular Surgery
  • Cardiac Anesthesiology
  • Pharmacology

Background:

  • Postoperative atrial fibrillation (AF) is a frequent complication following coronary artery bypass grafting (CABG).
  • AF after CABG is associated with increased patient morbidity and mortality.
  • Nitric oxide (NO) donors are being investigated for their potential prophylactic effects against AF.

Purpose of the Study:

  • To evaluate the efficacy of sodium nitroprusside (SNP), an NO donor, in preventing AF after CABG.
  • To assess the impact of SNP on the incidence, duration, and inflammatory markers associated with postoperative AF.

Main Methods:

  • A prospective, randomized, placebo-controlled trial involving 100 patients undergoing elective CABG.
  • Patients received either SNP (0.5 microg x kg(-1) x min(-1)) or placebo during the rewarming period.
  • Postoperative AF was monitored via telemetry, and high-sensitivity C-reactive protein (hs-CRP) levels were measured.

Main Results:

  • The incidence of AF was significantly lower in the SNP group (12%) compared to the placebo group (27%) (P=0.005).
  • The duration of AF episodes was significantly shorter in the SNP group (5.33±1.86 hours) versus the control group (7.55±1.94 hours) (P=0.023).
  • Postoperative hs-CRP levels were elevated in the control group, and AF prolonged hospital stay.

Conclusions:

  • Sodium nitroprusside administration significantly reduces the incidence and duration of postoperative atrial fibrillation after CABG.
  • SNP may serve as a potential therapeutic agent for AF prophylaxis in cardiac surgery patients.
  • Further research is warranted to fully elucidate the anti-AF properties of SNP.