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Left-to-right cardiac shunt: perioperative anesthetic considerations

Alan D Kaye1, Tyler B Stout, Ira W Padnos

  • 1Department of Anesthesiology, Louisiana State University Health Sciences Center, Louisiana State University School of Medicine, 1542 Tulane Ave, Room 656, New Orleans, LA 70112, USA. akaye@lsuhsc.edu

Middle East Journal of Anaesthesiology
|May 3, 2013
PubMed

Insights

Congenital heart disease (CHD) with left-to-right shunts impacts more adults due to medical advances. Anesthetic management for these patients requires understanding unique cardiopulmonary changes and pharmacodynamics for safe surgical care.

Area of Science:

  • Cardiology
  • Anesthesiology
  • Pediatric Surgery

Background:

  • Congenital heart disease (CHD) affects 8/1000 live births, with improved survival into adulthood for those with left-to-right shunts.
  • Surgical care for these patients necessitates a deep understanding of altered cardiopulmonary physiology and treatment strategies.
  • Common left-to-right shunts include atrial septal defect (ASD), ventricular septal defect (VSD), endocardial cushion defect (ECD), and patent ductus arteriosus (PDA).

Purpose of the Study:

  • To review current concepts and general principles of perioperative anesthetic management for congenital heart disease (CHD) patients.
  • To discuss specific anesthetic techniques and the pharmacodynamic/pharmacokinetic effects of agents in patients with left-to-right shunts.
  • To highlight the importance of specialized anesthetic care for adults with CHD undergoing surgery.

Main Methods:

  • Review of current literature on anesthetic management in congenital heart disease.
  • Analysis of physiological changes associated with left-to-right shunts, including pulmonary vascular resistance (PVR) and pulmonary arterial hypertension (PAH).
  • Examination of anesthetic agents' effects in the context of altered hemodynamics and pharmacokinetics in CHD patients.

Main Results:

  • Increased pulmonary vascular resistance (PVR) and pulmonary arterial hypertension (PAH) are key pathological changes in left-to-right shunts.
  • These changes can lead to Eisenmenger Syndrome and heart failure if uncorrected.
  • Early surgical or trans-catheter repair is generally indicated for these cardiac defects.

Conclusions:

  • Perioperative anesthetic management for adults with CHD requires specialized knowledge of cardiopulmonary alterations.
  • Understanding the unique effects of anesthetic agents is crucial for optimizing patient outcomes.
  • Neuraxial anesthesia and other advanced techniques should be considered within the context of the patient's specific cardiac defect and physiology.

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