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Noncompaction cardiomyopathy: manifestation as a surgical pitfall - rare but real
Supreet P Marathe1, Pradeep Vaideeswar2, Roneil Parikh3
1PK Sen Department of Cardiovascular and Thoracic Surgery, Seth GS Medical College and KEM Hospital, Mumbai, India.
Insights
Noncompaction cardiomyopathy, a rare heart muscle disease, poses significant surgical risks. Early diagnosis and vigilance are crucial to prevent fatal postoperative complications in affected patients.
Area of Science:
- Cardiology
- Cardiac Surgery
- Pathology
Background:
- Noncompaction cardiomyopathy is a rare congenital heart defect characterized by excessive myocardial trabeculation.
- Patients often present with heart failure, arrhythmias, and thromboembolism, complicating surgical management.
- Limited understanding of its surgical implications necessitates further investigation.
Observation:
- A retrospective autopsy review identified 13 cases of noncompaction cardiomyopathy among 9427 autopsies (2003-2012).
- Affected individuals ranged from 4 months to 55 years, with a predominance in children and older adults.
- Only one patient received a preoperative diagnosis via echocardiography, and 7 deaths occurred postoperatively.
Findings:
- The study highlights a significant postoperative mortality rate in patients with undiagnosed noncompaction cardiomyopathy.
- Surgical intervention in patients with this condition, especially when undiagnosed, carries a high risk of adverse outcomes.
- The nonspecific clinical presentation and low awareness contribute to diagnostic challenges.
Implications:
- Vigilance by echocardiographers and surgeons is critical for identifying noncompaction cardiomyopathy preoperatively.
- Improved diagnostic strategies are needed to reduce the risk of fatal postoperative complications.
- This study underscores the importance of considering rare cardiac conditions in surgical planning.
Objectives:
Noncompaction cardiomyopathy is characterized by hyper-trabeculation of the myocardium. The patients present with heart failure and variable combination of arrhythmias and thromboembolism. Although several articles have shed light on the medical aspect of this disease, none have highlighted its surgical relevance. A death following ligation of a patent ductus arteriosus prompted us to evaluate the surgical aspects of this disease.
Methods:
Autopsy records from 2003 to 2012 were reviewed, and cases identified as noncompaction cardiomyopathy were retrieved and analyzed. Cases with obligatory hyper-trabeculation were excluded.
Results:
Thirteen patients were found to have noncompaction cardiomyopathy in 9427 autopsies performed. Their ages ranged from 4 months to 55 years; 10 were children, and all 3 adults were over 45 years of age. Only one patient had an antemortem diagnosis of noncompaction cardiomyopathy on echocardiography. There were 7 postoperative deaths.
Conclusions:
Although noncompaction cardiomyopathy is rare, missing its diagnosis in a patient operated on for another indication can spell disaster postoperatively. As the clinical picture is nonspecific and the disease is not very well known, it needs vigilance on the part of the echocardiographer and surgeon.
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