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Echocardiography-guided ethanol septal reduction for hypertrophic obstructive cardiomyopathy.
| Content Provider | Semantic Scholar |
|---|---|
| Author | He, Zheng Xian Roberts, Robert |
| Copyright Year | 1998 |
| Abstract | BACKGROUND Left ventricular outflow tract (LVOT) obstruction is frequently responsible for symptoms in hypertrophic obstructive cardiomyopathy (HOCM). Medical therapy is often not sufficient to control these symptoms, and surgical myotomy-myomectomy is required. METHODS AND RESULTS We enrolled 33 symptomatic patients with HOCM and obstruction (>/=40 mm Hg gradient at rest or >/=60 mm Hg dobutamine-provoked). By contrast echocardiography, the bulging septum was localized and infarcted by injection of 2 to 5 mL of absolute ethanol into the septal artery(ies) supplying the hypertrophied area. Baseline echocardiograms with Doppler, myocardial perfusion tomograms, and treadmill exercise or pharmacological testing were compared with those at 6 weeks and 6 months. The mean rise in creatine kinase was 1964+/-796 U. All patients experienced symptomatic relief; NYHA class decreased from 3. 0+/-0.5 to 0.9+/-0.6 (P<0.001). Exercise time increased from 286+/-193 to 421+/-181 seconds (P=0.03). The resting and dobutamine-provoked gradient decreased from 49+/-33 and 96+/-34 mm Hg to 9+/-19 (P<0.001) and 24+/-31 mm Hg (P<0.001), respectively. Echocardiograms repeated at 6 weeks after the procedure showed a 28% reduction in septal thickness and 17% reduction in left ventricular mass. Myocardial perfusion imaging showed a "septal amputation pattern," with scarring in the upper and middle septal areas. Complete heart block developed in 11 patients, who then required permanent pacemaker implantation. CONCLUSIONS Echocardiography-guided ethanol septal reduction in patients with HOCM is a safe, minimally invasive procedure that provides symptomatic relief with improved hemodynamic and left ventricular parameters. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://circ.ahajournals.org/content/circulationaha/98/17/1750.full.pdf |
| Alternate Webpage(s) | http://circ.ahajournals.org/content/circulationaha/98/17/1750.full.pdf?download=true |
| PubMed reference number | 9788829v1 |
| Volume Number | 98 |
| Issue Number | 17 |
| Journal | Circulation |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Cardiomyopathies Cicatrization Creatine Kinase Dobutamine Echocardiography Ethanol Heart Block Hemodynamics Hypertrophic Cardiomyopathy Hypertrophy Left Ventricular Outflow Tract Mercury Myocardial Infarction Obstruction Patients Pharmacology Rest Septum - general anatomical term Uterine Myomectomy Ventricular Fibrillation Ventricular Septal Defects tomography |
| Content Type | Text |
| Resource Type | Article |
