Reduction of left ventricular outflow tract gradient by left versus right ventricular pacing in hypertrophic obstructive cardiomyopathy

Heart Rhythm ◽  
2005 ◽  
Vol 2 (5) ◽  
pp. S323
Author(s):  
Steve S. Hsu ◽  
Adriana Slobodova
Keyword(s):  
Right Ventricular ◽  
Left Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Hypertrophic Obstructive Cardiomyopathy ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Ventricular Pacing ◽  
Right Ventricular Pacing ◽  
Left Ventricular Outflow

Surgical Treatment of a 4-Year-Old Child with Hypertrophic Obstructive Cardiomyopathy: Case Report

2016 ◽  
Vol 19 (1) ◽  
pp. 043
Author(s):  
Jin Chen ◽  
Qingyu Wu ◽  
Zhonghua Xu ◽  
Xiangchen Kong
Keyword(s):  
Surgical Treatment ◽  
Right Ventricular ◽  
Left Ventricular Outflow Tract ◽  
Right Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Hypertrophic Obstructive Cardiomyopathy ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Left Ventricular Outflow ◽  
Left And Right

The incidence of pediatric hypertrophic obstructive cardiomyopathy is low. The lesions usually involve the left ventricle or ventricular septum, leading to either left or right ventricular outflow tract stenosis. However, combined left and right ventricular outflow tract stenosis is rare, and the surgical treatment is limited, especially in children. Surgery to release the obstruction was performed successfully in a 4-year-old child with right and left ventricular outflow tract obstruction together with a hypertrophic cardiomyopathy. The result was excellent.

Extended septal myectomy and left ventricular outflow tract intervention for hypertrophic obstructive cardiomyopathy

2021 ◽  
Keyword(s):  
Left Ventricular Outflow Tract ◽  
Therapeutic Option ◽  
Ventricular Outflow Tract ◽  
Hypertrophic Obstructive Cardiomyopathy ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Septal Myectomy ◽  
Inherited Cardiomyopathy ◽  
Left Ventricular Outflow ◽  
Tailored Approach

Hypertrophic obstructive cardiomyopathy is the most common inherited cardiomyopathy. Septal myectomy is a low-risk operation and remains the first septal reduction therapeutic option. We present a patient with hypertrophic obstructive cardiomyopathy requiring extended septal myectomy and concomitant left ventricular outflow tract intervention. In addition to septal reduction therapy, this patient also underwent anterior mitral valve plication, trigonal release, and secondary chordal division to relieve the obstruction. A tailored approach to hypertrophic obstructive cardiomyopathy with a comprehensive left ventricular outflow tract intervention is necessary to ensure the best hemodynamic outcome. Preoperative heart failure and recurrent syncope fully resolved after this intervention.

scholarly journals The results of alcoholic septal ablation in the treatment of hypertrophic cardiomyopathy

2020 ◽  
pp. 44-49
Author(s):  
B.M. Todurov ◽  
◽  
G.I. Kovtun ◽  
A.V. Khokhlov ◽  
O.V. Pantazi ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Hypertrophic Cardiomyopathy ◽  
Left Ventricular Outflow Tract ◽  
Young Patients ◽  
Ventricular Outflow Tract ◽  
Hypertrophic Obstructive Cardiomyopathy ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Alcohol Septal Ablation ◽  
Left Ventricular Outflow

Hypertrophic obstructive cardiomyopathy іs a relatively common condition and one of the most common causes of sudden cardiac death in young age. One of the options for the surgical treatment of this pathology is septal myoectomy, which has been the gold standard for decades. However, despite this, surgical treatment is intended for young patients with a low risk of postoperative complications, while patients with concomitant diseases and a higher surgical risk require alternative treatment. Today, alcohol septal ablation is considered an effective, minimally invasive method for treating hypertrophic obstructive cardiomyopathy in patients with a left ventricular outflow tract gradient ≥ 50 mm Hg. The article presents the experience of using alcohol septal ablation in 57 patients with obstruction of the left ventricular outflow tract. Key words: alcoholic septal ablation, hypertrophic cardiomyopathy, left ventricular outflow tract obstruction.

scholarly journals Relationship of left ventricular outflow tract velocity time integral to treatment strategy in submassive and massive pulmonary embolism

2020 ◽  
Vol 10 (3) ◽  
pp. 204589402095372
Author(s):  
David Antoine ◽  
Taylor Chuich ◽  
Ruben Mylvaganam ◽  
Chris Malaisrie ◽  
Benjamin Freed ◽  
...  
Keyword(s):  
Right Ventricular ◽  
Left Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Velocity Time Integral ◽  
Systemic Thrombolysis ◽  
Percent Change ◽  
Time Integral ◽  
Left Ventricular Outflow

Pulmonary embolism is associated with high rates of mortality and morbidity. It is important to understand direct comparisons of current interventions to differentiate favorable outcomes and complications. The objective of this study was to compare ultrasound-accelerated thrombolysis versus systemic thrombolysis versus anticoagulation alone and their effect on left ventricular outflow tract velocity time integral. This was a retrospective cohort study of subjects ≥18 years of age with a diagnosis of submassive or massive pulmonary embolism. The primary outcome was the percent change in left ventricular outflow tract velocity time integral between pre- and post-treatment echocardiograms. Ultrasound-accelerated thrombolysis compared to anticoagulation had a greater improvement in left ventricular outflow tract velocity time integral, measured by percent change. No significant change was noted between the ultrasound-accelerated thrombolysis and systemic thrombolysis nor systemic thrombolysis and anticoagulation groups. Pulmonary artery systolic pressure only showed a significant reduction in the ultrasound-accelerated thrombolysis versus anticoagulation group. The percent change of right ventricular to left ventricular ratios was improved when systemic thrombolysis was compared to both ultrasound-accelerated thrombolysis and anticoagulation. In this retrospective study of submassive or massive pulmonary embolisms, left ventricular outflow tract velocity time integral demonstrated greater improvement in patients treated with ultrasound-accelerated thrombolysis as compared to anticoagulation alone, a finding not seen with systemic thrombolysis. While this improvement in left ventricular outflow tract velocity time integral parallels the trend seen in mortality outcomes across the three groups, it only correlates with changes seen in pulmonary artery systolic pressure, not in other markers of echocardiographic right ventricular dysfunction (tricuspid annular plane systolic excursion and right ventricular to left ventricular ratios). Changes in left ventricular outflow tract velocity time integral, rather than echocardiographic markers of right ventricular dysfunction, may be considered a more useful prognostic marker of both dysfunction and improvement after reperfusion therapy.

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