PubMed Health⌕ Search

Biomedical subjects

M K Mandawat

Publications and source records attributed to M K Mandawat.

7 recordsLinked to original sources
PubMed2000

Successful percutaneous stenting of a right gastroepiploic coronary bypass graft using monorail delivery system: a case report.

The right gastroepiploic artery (RGEA) is being successfully used as an arterial conduit in a selected group of patients undergoing coronary artery bypass graft surgery. However, myocardial ischemia may result due to spasm, occlusion, and stenosis of this graft. The anastamosis site at distal right coronary artery (RCA) or posterior descending artery (PDA) is the most common location for stenosis of an in situ gastroepiploic coronary bypass graft. Balloon angioplasty of such stenoses has been reported with optimal short-term results. Stent deployment would decrease the restenosis rate, so that repeat procedures could be minimized for these technically challenging lesions. We describe a case of successful deployment of a stent with monorail delivery system at the anastamotic site stenosis of an in situ gastroepiploic right coronary artery bypass graft. This percutaneous coronary intervention could prevent redo coronary artery bypass graft surgery. Cathet. Cardiovasc. Intervent. 49:197-199, 2000.

Angioplasty, Balloon, Coronary↗
PubMed1998

Catheter entrapment in the mitral valve apparatus requiring surgical removal: an unusual complication of radiofrequency ablation.

We describe a patient with Wolff-Parkinson-White syndrome in whom a steerable catheter became entrapped in the mitral valve apparatus, during radiofrequency ablation. Treatment consisted of surgical removed of the catheter. The occurrence of this previously unreported complication stresses the need for on-going monitoring of risk and benefits of electrophysiological interventions.

Catheter Ablation↗
PubMed1997

Pulsus alternans in diastolic left ventricular dysfunction--a case report.

Pulsus alternans is usually found in patients with reduced systolic ventricular function. We describe a patient with recurrent pulmonary edema, hypertension, bilateral renal artery stenosis, but with normal systolic function. Pulsus alternans was demonstrated in both pulmonary artery, right ventricle, and left ventricle pressures. After successful renal artery revascularization, the pulsus alternans disappeared. This case illustrates that pulsus alternans can be present with diastolic dysfunction of the left ventricle in the absence of systolic dysfunction.

Aged↗
PubMed1995

Heart rate variability in left ventricular hypertrophy.

BACKGROUND: Electrocardiographic left ventricular hypertrophy and strain are associated with increased cardiac morbidity and mortality. Impaired cardiac autonomic function, assessed non-invasively by spontaneous heart rate variability on Holter monitoring, is associated with an increased risk of sudden death after myocardial infarction. AIM: To study the effect of left ventricular hypertrophy on heart rate variability. PATIENTS: 36 controls and 154 patients with left ventricular hypertrophy (94 with hypertension and 60 with aortic valve disease). SETTING: Tertiary referral centre. METHODS: Heart rate variability was measured on 24 h Holter recordings by non-spectral methods. Left ventricular mass index and fractional shortening were measured by echocardiography. RESULTS: Patients with left ventricular hypertrophy had a higher left ventricular mass index (P < 0.001) and reduced heart rate variability (P < 0.001) compared with those of the controls. A continuous inverse relation was apparent between heart rate variability and left ventricular mass index (r = -0.478, P < 0.001). Heart rate variability was not affected by age, the presence of coronary artery disease in patients with left ventricular hypertrophy, or beta blocker treatment for hypertension. Multivariate analysis showed that left ventricular mass index is the most important determinant of heart rate variability. CONCLUSION: Heart rate variability is significantly reduced in patients with left ventricular hypertrophy secondary to hypertension or aortic valve disease. A continuous inverse relation exists between heart rate variability and left ventricular mass index. Impaired cardiac autonomic function in left ventricular hypertrophy may contribute to the mechanism of sudden death.

Aortic Valve Stenosis↗