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Myocardial Infarction in Neonatal Mice, A Model of Cardiac Regeneration
Published on: May 24, 2016
Infant myocardial recovery with device and surgical repair
Jack Copeland1, Hannah Zimmerman
1Department of Surgery, University of California San Diego, San Diego, California 92103, USA. jackcope3@gmail.com
Insights
A novel approach using a left ventricular assist device and septal aneurysmectomy successfully treated severe infant heart failure. This intervention led to significant recovery of heart function and successful patient discharge.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Surgery
- Biomedical Engineering
Background:
- Infantile heart failure presents significant management challenges.
- Severe left ventricular dysfunction requires advanced therapeutic strategies.
Observation:
- A 4-month-old infant with severe heart failure (ejection fraction 10%) deteriorated despite maximal medical and ventilatory support.
- Persistent septal dyskinesis complicated weaning from mechanical ventilation.
Findings:
- Implantation of a centrifugal left ventricular assist device (LVAD) facilitated reverse remodeling and allowed device weaning after 9 days.
- Subsequent ventricular septal aneurysmectomy resolved septal dyskinesis, enabling successful extubation and discharge.
- The patient demonstrated remarkable recovery, with ejection fraction improving to 65%.
Implications:
- This case highlights the potential of mechanical circulatory support and surgical intervention in managing complex pediatric heart failure.
- Early intervention with LVAD and septal repair can lead to favorable long-term outcomes in infants.
- This approach offers a viable treatment option for neonates and infants with life-threatening cardiac conditions.
Abstract:
A 4-month-old female infant (weight, 6.17 kg; height, 65 cm) presenting with tachypnea and tachycardia, and a left ventricular ejection fraction of 10%, deteriorated on increasing inotropic therapy and mechanical ventilation. Implantation of a centrifugal left ventricular assist device and institution of maximal medical heart failure therapy led to reverse remodeling and discontinuation of device support after 9 days. One week later, after failure to wean from the ventilator and persistence of a severely dyskinetic septum, a ventricular septal aneurysmectomy was done. The patient was extubated 5 days later followed by hospital discharge 11 days post-septal aneurysmectomy. The patient has done well since then with the most recent echocardiogram showing a 65% ejection fraction.
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