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[Anesthetic management of patients with cardiomyopathies]
T Takenaka1, S Nomiyama, S Okada
1Department of Anesthesiology, School of Medicine, Kitasato University, Sagamihara.
Insights
Anesthetic management for cardiomyopathy patients requires careful consideration. While both general and epidural anesthesia showed similar complication rates, epidural techniques are recommended for hypertrophic cardiomyopathy (HCM) patients.
Area of Science:
- Cardiology
- Anesthesiology
- Internal Medicine
Context:
- Cardiomyopathy presents significant anesthetic challenges.
- This study reviewed 24 procedures in 16 patients with hypertrophic (HCM) and dilated (DCM) cardiomyopathy over 8 years.
Purpose:
- To evaluate anesthetic management strategies for patients with cardiomyopathy.
- To identify risk factors and compare anesthesia types for HCM and DCM patients.
Summary:
- In HCM, preoperative atrial fibrillation, ECG conduction disturbances, and echocardiogram hypokinesis correlated with intraoperative complications.
- Preoperative heart failure, arrhythmias, and ECG conduction disturbances were risk factors in DCM.
- No significant difference in complications was found between general and epidural anesthesia for either type.
Impact:
- Anesthesiologists must be aware of cardiomyopathy to mitigate risks during induction.
- Epidural anesthesia is suggested as a preferred method for HCM patients.
- Findings aid in optimizing anesthetic care for patients with cardiomyopathies.
Abstract:
Anesthetic management of patients with cardiomyopathy was studied. In the past 8 years, we experienced 24 surgical procedures for 16 patients complicated with cardiomyopathy of whom 6 cases with hypertrophic type (HCM) and 10 cases with dilated type (DCM). In HCM there was no correlation between the incidence of intraoperative complication and preoperative evaluation by New York Heart Association. In HCM cases who revealed atrial fibrillation, conduction disturbance on ECG and hypokinesis on echocardiogram resulted in high incidence of cardiac complication during anesthesia. Induction of anesthesia is extremely risky if the anesthesiologist is not aware of the presence of cardiomyopathies. In DCM, preoperative episode of heart failure, arrhythmias and conduction disturbance on ECG were considered as anesthetic risk factors. Both in HCM and DCM, there were no statistical significance in complication between general anesthesia and epidural anesthesia. The authors recommend epidural technique as a method of choice for HCM patient.