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Chinese Journal of Medical Ultrasound (Electronic Edition) ›› 2020, Vol. 17 ›› Issue (05): 416-420. doi: 10.3877/cma.j.issn.1672-6448.2020.05.005

Special Issue:

• Cardiovascular Ultrasound • Previous Articles     Next Articles

Treatment of hypertrophic obstructive cardiomyopathy by percutaneous intramyocardial septal radiofrequency ablation does not increase arrhythmia risk: a 1-year follow-up study of 35 cases

Shengjun Ta1, Liwen Liu2,(), Menyao Zhou2, Lei Zuo2, Jianlei Zhang3, Jing Li2, Jing Wang2, Xiaojuan Li2, Wei Zhang2, Rui Hu2   

  1. 1. Department of Ultrasound, the First Affiliated Hospital of Air Force Medical University (Xi'jing Hospital); Hypertrophic Cardiomyopathy International Cooperation Center, the First Affiliated Hospital of Air Force Medical University (Xi'jing Hospital); Multidisciplinary Consultation Center of Hypertrophic Cardiomyopathy, Shaanxi Province; Multidisciplinary Clinic and Genetic Counseling Center of Hypertrophic Cardiomyopathy, Xijing Hospital, Xi'an 710032, China.; Department of Ultrasound, Yan′an People′s Hospital, Yan′an 716000, China
    2. Department of Ultrasound, the First Affiliated Hospital of Air Force Medical University (Xi'jing Hospital); Hypertrophic Cardiomyopathy International Cooperation Center, the First Affiliated Hospital of Air Force Medical University (Xi'jing Hospital); Multidisciplinary Consultation Center of Hypertrophic Cardiomyopathy, Shaanxi Province; Multidisciplinary Clinic and Genetic Counseling Center of Hypertrophic Cardiomyopathy, Xijing Hospital, Xi'an 710032, China
    3. Department of Ultrasound, Yan′an People′s Hospital, Yan′an 716000, China
  • Received:2020-03-26 Online:2020-05-01 Published:2020-05-01
  • Contact: Liwen Liu
  • About author:
    Correspondence author: Liu Liwen, Email:

Abstract:

Objectives

To evaluate the risk of arrhythmia in patients with hypertrophic obstructive cardiomyopathy (HOCM) treated by echocardiography-guided percutaneous intramyocardial septal radiofrequency ablation (PIMSRA) with 24-hour Holter.

Methods

Before and 1 year after PIMSRA, the parameters of ventricular arrhythmia, atrial arrhythmia, and heart rate variability were obtained by 24-hour Holter. The difference of these parameters before and after operation were compared by paired sample t test and paired Wilcoxon signed rank sum test.

Results

There was no significant difference in heart rate, ventricular arrhythmia, or supraventricular arrhythmia before and 1 year after PIMSRA (P>0.05). Maximum QT and maximum QTc did not differ significantly between before and 1 year after PIMSRA (P>0.05). There was also no significant difference in heart rate variability before and 1 year after PIMSRA (P>0.05).

Conclusion

PIMSRA does not increase the risk of short-term arrhythmia in patients with HOCM. Further study in a large number of patients is needed for assessing long-term risk.

Key words: Hypertrophic obstructive cardiomyopathy, Interventional therapy, Percutaneous intramyocardial septal radiofrequency ablation, 24 h Holter

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