Adult ; Balloon Dilatation/*methods ; Comparative Study ; Female ; Human ; Male ; Middle Age ; Mitral Valve Stenosis/*therapy

We performed percutaneous mitral balloon valvuloplasty (PMV) in 367 patients to compare the effectiveness of PMV between patients with mitral restenosis after surgical commissurotomy (group 1) and patients with unoperated mitral stenosis (group 2). Twenty-two had undergone closed or open mitral commissurotomy 11.2 years before. There were no significant differences in clinical profiles between the two groups. The mitral valve area was increased from 1.0 +/- 0.8 to 1.8 +/- 0.6 cm2 in group 1 and 0.9 +/- 0.3 to 2.0 +/- 0.7 cm2 in group 2 (p> 0.05). The mitral gradient was decreased from 14 +/- 5.9 to 6 +/- 2.6 mmHg in group 1 and 18 +/- 7.0 to 7 +/- 5.3 mmHg in group 2 (p> 0.05). The increment of mitral regurgitation and significant left to right shunt after PMV were not significantly different (10% versus 14.7%, 5% versus 10.4% respectively). Optimal results were attained in 75% of the patients in group 1 and in 84.3% of the patients in group 2 (p> 0.05). These results suggest PMV in mitral restenosis after surgical commissurotomy may be safe in selected patients and may be equally effective as in unoperated mitral stenosis.
Adult ; *Balloon Dilatation ; Comparative Study ; Evaluation Studies ; Female ; Human ; Male ; Middle Age ; Mitral Valve/*surgery ; Mitral Valve Stenosis/surgery/*therapy ; Recurrence

Prosthetic valve thrombosis(PVT) may be a life-threatening complication requiring prompt intervention. This is a case report of thrombolytic therapy for thrombosis of prosthetic mitral valve. A 47 year-old male admitted to the emergency room for abrupt onset of dyspnea. He had undergone mitral valve replacement(On-X valve, 29mm) for mitral stenosis 8 months ago. The patient's international normalized ratio(INR) on admission was 1.09. The mechanical clicks were muffled and rales were heard in both lung fields. A transesophageal echocardiography(TEE) revealed prosthetic valve thrombosis with increased transvalvular pressure gradient(34 mmHg). The patient's condition needed to intubation for mechanical ventilation due to hemodynamic compromise, however his wife and relatives refused the surgical intervention due to financial problems. The patient was transferred to the cardiac care unit and we decided to perform thrombolytic therapy. A bolus of 1,500,000 IU of urokinase was given, followed by a drip of 1,500,000 IU for 1 hour. The patient did not improved hemodynamically; therefore, we gave 100 mg of tissue plasminogen activator(t-PA) for over 2 hours. During that time mechanical clicks were audible and hemodynamics of the patient improved progressively. A TEE showed disappearance of thrombus and decreased pressure gradient(1.7 mmHg) after 6 hours of thrombolytic therapy. The patient was recovered without any neurologic sequale and was discharged with administration of warfarin.
Dyspnea ; Emergency Service, Hospital ; Hemodynamics ; Humans ; Intubation ; Lung ; Male ; Middle Aged ; Mitral Valve Stenosis ; Mitral Valve* ; Plasminogen ; Respiration, Artificial ; Respiratory Sounds ; Spouses ; Thrombolytic Therapy* ; Thrombosis* ; Urokinase-Type Plasminogen Activator ; Warfarin

Prosthetic valve thrombosis(PVT) may be a life-threatening complication requiring prompt intervention. This is a case report of thrombolytic therapy for thrombosis of prosthetic mitral valve. A 47 year-old male admitted to the emergency room for abrupt onset of dyspnea. He had undergone mitral valve replacement(On-X valve, 29mm) for mitral stenosis 8 months ago. The patient's international normalized ratio(INR) on admission was 1.09. The mechanical clicks were muffled and rales were heard in both lung fields. A transesophageal echocardiography(TEE) revealed prosthetic valve thrombosis with increased transvalvular pressure gradient(34 mmHg). The patient's condition needed to intubation for mechanical ventilation due to hemodynamic compromise, however his wife and relatives refused the surgical intervention due to financial problems. The patient was transferred to the cardiac care unit and we decided to perform thrombolytic therapy. A bolus of 1,500,000 IU of urokinase was given, followed by a drip of 1,500,000 IU for 1 hour. The patient did not improved hemodynamically; therefore, we gave 100 mg of tissue plasminogen activator(t-PA) for over 2 hours. During that time mechanical clicks were audible and hemodynamics of the patient improved progressively. A TEE showed disappearance of thrombus and decreased pressure gradient(1.7 mmHg) after 6 hours of thrombolytic therapy. The patient was recovered without any neurologic sequale and was discharged with administration of warfarin.
Dyspnea ; Emergency Service, Hospital ; Hemodynamics ; Humans ; Intubation ; Lung ; Male ; Middle Aged ; Mitral Valve Stenosis ; Mitral Valve* ; Plasminogen ; Respiration, Artificial ; Respiratory Sounds ; Spouses ; Thrombolytic Therapy* ; Thrombosis* ; Urokinase-Type Plasminogen Activator ; Warfarin

Changes in cardiac rehabilitation in the 1990s involved the development of different patterns of the delivery of rehabilitative care. Patients were offered with a choice of individual versus group and center-based versus home-based physical activity programs. The recent application of risk-stratification procedures for coronary patients has brought major changes in the delivery of cardiac rehabilitation exercise training. Patients considered at low risk are able to undertake less supervised rehabilitation in a safe manner. Contemporary cardiac rehabilitation programs provide several important core components, including baseline patient assessment, nutrition counseling, risk factor management, psychosocial management, and activity counseling. However, appropriately prescribed exercise therapy remains the cornerstone of these programs. Cardiac rehabilitation programs have been categorized as phase I (inpatient), phase II (up to 12 weeks of ECG monitoring), phase II (no ECG monitoring under clinical supervision), and phase IV(no ECG monitoring, professional supervision). Cardiac patients who have specific needs to consider when formulating the exercise prescription include those with a history of myocardial infarction and angina, congestive heart failure, mitral valve stenosis and cardiac transplantation. Finally, the goals of rehabilitative care should include improvement of the functional capacity to achieve functional independence with an emphasis on quality of life.
Counseling ; Electrocardiography ; Exercise Therapy ; Heart Failure ; Heart Transplantation ; Humans ; Mitral Valve Stenosis ; Motor Activity ; Myocardial Infarction ; Nutrition Assessment ; Prescriptions ; Quality of Life ; Rehabilitation* ; Risk Factors

BACKGROUNDTricuspid regurgitation (TR) is frequently associated with severe mitral stenosis (MS), the importance of significant TR was often neglected. However, TR influences the outcome of patients. The aim of this study was to investigate the efficacy and safety of percutaneous balloon mitral valvuloplasty (PBMV) procedure in rheumatic heart disease patients with mitral valve (MV) stenosis and tricuspid valve regurgitation.

METHODSTwo hundred and twenty patients were enrolled in this study due to rheumatic heart disease with MS combined with TR. Mitral balloon catheter made in China was used to expand MV. The following parameters were measured before and after PBMV: MV area (MVA), TR area (TRA), atrial pressure and diameter, and pulmonary artery pressure (PAP). The patients were followed for 6 months to 9 years.

RESULTSAfter PBMV, the MVAs increased significantly (1.7 ± 0.3 cm 2 vs. 0.9 ± 0.3 cm 2 , P < 0.01); TRA significantly decreased (6.3 ± 1.7 cm 2 vs. 14.2 ± 6.5 cm 2 , P < 0.01), right atrial area (RAA) decreased significantly (21.5 ± 4.5 cm 2 vs. 25.4 ± 4.3 cm 2 , P < 0.05), TRA/RAA (%) decreased significantly (29.3 ± 3.2% vs. 44.2 ± 3.6%, P < 0.01). TR velocity (TRV) and TR continue time (TRT) as well as TRV × TRT decreased significantly (183.4 ± 9.4 cm/s vs. 254.5 ± 10.7 cm/s, P < 0.01; 185.7 ± 13.6 ms vs. 238.6 ± 11.3 ms, P < 0.01; 34.2 ± 5.6 cm vs. 60.7 ± 8.5 cm, P < 0.01, respectively). The postoperative left atrial diameter (LAD) significantly reduced (41.3 ± 6.2 mm vs. 49.8 ± 6.8 mm, P < 0.01) and the postoperative right atrial diameter (RAD) significantly reduced (28.7 ± 5.6 mm vs. 46.5 ± 6.3 mm, P < 0.01); the postoperative left atrium pressure significantly reduced (15.6 ± 6.1 mmHg vs. 26.5 ± 6.6 mmHg, P < 0.01), the postoperative right atrial pressure decreased significantly (13.2 ± 2.4 mmHg vs. 18.5 ± 4.3 mmHg, P < 0.01). The pulmonary arterial pressure decreased significantly after PBMV (48.2 ± 10.3 mmHg vs. 60.6 ± 15.5 mmHg, P < 0.01). The symptom of chest tightness and short of breath obviously alleviated. All cases followed-up for 6 months to 9 years (average 75 ± 32 months), 2 patients with severe regurgitation died (1 case of massive cerebral infarction, and 1 case of heart failure after 6 years and 8 years, respectively), 2 cases lost access. At the end of follow-up, MVA has been reduced compared with the postoperative (1.4 ± 0.4 cm 2 vs. 1.7 ± 0.3 cm 2 , P < 0.05); LAD slightly increased compared with the postoperative (45.2 ± 5.7 mm vs. 41.4 ± 6.3 mm, P < 0.05), RAD slightly also increased compared with the postoperative (36.1 ± 6.3 mm vs. 28.6 ± 5.5 mm, P < 0.05), but did not recover to the preoperative level. TRA slightly increased compared with the postoperative, but the difference was not statistically significant (P > 0.05). The PAP and left ventricular ejection fraction appeared no statistical difference compared with the postoperative (P > 0.05), the remaining patients without serious complications.

CONCLUSIONSPBMV is a safe and effective procedure for MS combined with TR in patients of rheumatic heart disease. It can alleviate the symptoms and reduce the size of TR. It can also improve the quality-of-life and prognosis. Its recent and mid-term efficacy is certain. While its long-term efficacy remains to be observed.

Adult ; Aged ; Balloon Valvuloplasty ; methods ; Echocardiography ; Female ; Humans ; Male ; Middle Aged ; Mitral Valve Stenosis ; diagnostic imaging ; therapy ; Rheumatic Heart Disease ; diagnostic imaging ; therapy ; Tricuspid Valve Insufficiency ; diagnostic imaging ; therapy

BACKGROUND: Reperfusion of ischemic myocardium is clinically encountered during thrombolytic therapy of acute myocardial infarction, percutaneous transluminal coronary angioplasty(PTCA), and coronary artery bypass graft(CABG). Reperfusion results in endothelial dysfunction characterized by a reduced release of endothelium-derived relaxing factor(EDRF) in animal studies. Studies with experimental animals have emphasized the role of oxygen free radicals and lipid peroxidation in pathophysiology of reperfusion injury and myocardial stunning. The object of this study is to determine whether endothelial dysfunction was developed after open heart surgery and to evaluated the role of oxygen free radical and lipid peroxidation in reperfusion injury. METHODS: The study group was comprised 13 patients who underwent open heart surgery(male/female : 2/11, mean age : 43+/-4 year, Atrial septal defect in 4, Ventricular septal defect in 1, Mitral regurgitation in 2, Tetralogy of Fallot in 1, and Aortic stenosis and Regurgitation with Mitral stenosis in 5 patients). The endothelial function was evaluated with the vasomotor response to acetylcholine and nitroglycerin by change of arterial diameter during the continous infusion of acetylcholin, from 10(-9) to 10(-6) molar concentration to the coronary artery and intracoronary injection of 200microg nitroglycerin after acetylcholine infusion. The infusion study was performed before and 10 days after surgery. For analysis of the role of oxygen free radical and lipid peroxidation in reperfusion injury, blood samples for malondialdehyde and neutrophil respiratory burst test(hydrogen peroxide amount of neutrophils) were obtained in pre-declamping of aorta and 5 min, 10 min, and 20 min after declamping of aorta from coronary sinus. RESULTS: 1) The vasoconstrictor response to acetylcholine, 10(-9) to 10(-6)M concentration, at proximal and distal left anterior descending coronary artery, were increased significantly in post-operation infusion study but there was no singnificant difference in vasodilator response to nitroglycerin. 2) The mean absorbance value of malondialdehyde(MDA) in pre-declamping and 5min, 10min, and 20min after reperfusion were 96+/-12, 73+/-12, 89+/-11 and 77+/-12, respectively. There was no significant difference in plasma MDA level and hydrogen peroxide amount of neutrophils after reperfusion(aortic declamping). CONCLUSION: These data suggest that endothelium dependent vascular relaxation is impaired in patients with open heart surgery and post-ischemic reperfusion injury may be responsible for the abnormal response. But we did not determine the role of lipid peroxidation and oxygen free radical in reperfusion injury.
Acetylcholine ; Animals ; Aorta ; Aortic Valve Stenosis ; Coronary Artery Bypass ; Coronary Sinus ; Coronary Vessels ; Endothelium ; Free Radicals ; Heart Septal Defects, Atrial ; Heart Septal Defects, Ventricular ; Heart* ; Humans ; Hydrogen Peroxide ; Lipid Peroxidation* ; Malondialdehyde ; Mitral Valve Insufficiency ; Mitral Valve Stenosis ; Molar ; Myocardial Infarction ; Myocardial Stunning ; Myocardium ; Neutrophils ; Nitroglycerin ; Oxygen* ; Plasma ; Relaxation ; Reperfusion Injury* ; Reperfusion* ; Respiratory Burst ; Tetralogy of Fallot ; Thoracic Surgery* ; Thrombolytic Therapy

BACKGROUND: Reperfusion of ischemic myocardium is clinically encountered during thrombolytic therapy of acute myocardial infarction, percutaneous transluminal coronary angioplasty(PTCA), and coronary artery bypass graft(CABG). Reperfusion results in endothelial dysfunction characterized by a reduced release of endothelium-derived relaxing factor(EDRF) in animal studies. Studies with experimental animals have emphasized the role of oxygen free radicals and lipid peroxidation in pathophysiology of reperfusion injury and myocardial stunning. The object of this study is to determine whether endothelial dysfunction was developed after open heart surgery and to evaluated the role of oxygen free radical and lipid peroxidation in reperfusion injury. METHODS: The study group was comprised 13 patients who underwent open heart surgery(male/female : 2/11, mean age : 43+/-4 year, Atrial septal defect in 4, Ventricular septal defect in 1, Mitral regurgitation in 2, Tetralogy of Fallot in 1, and Aortic stenosis and Regurgitation with Mitral stenosis in 5 patients). The endothelial function was evaluated with the vasomotor response to acetylcholine and nitroglycerin by change of arterial diameter during the continous infusion of acetylcholin, from 10(-9) to 10(-6) molar concentration to the coronary artery and intracoronary injection of 200microg nitroglycerin after acetylcholine infusion. The infusion study was performed before and 10 days after surgery. For analysis of the role of oxygen free radical and lipid peroxidation in reperfusion injury, blood samples for malondialdehyde and neutrophil respiratory burst test(hydrogen peroxide amount of neutrophils) were obtained in pre-declamping of aorta and 5 min, 10 min, and 20 min after declamping of aorta from coronary sinus. RESULTS: 1) The vasoconstrictor response to acetylcholine, 10(-9) to 10(-6)M concentration, at proximal and distal left anterior descending coronary artery, were increased significantly in post-operation infusion study but there was no singnificant difference in vasodilator response to nitroglycerin. 2) The mean absorbance value of malondialdehyde(MDA) in pre-declamping and 5min, 10min, and 20min after reperfusion were 96+/-12, 73+/-12, 89+/-11 and 77+/-12, respectively. There was no significant difference in plasma MDA level and hydrogen peroxide amount of neutrophils after reperfusion(aortic declamping). CONCLUSION: These data suggest that endothelium dependent vascular relaxation is impaired in patients with open heart surgery and post-ischemic reperfusion injury may be responsible for the abnormal response. But we did not determine the role of lipid peroxidation and oxygen free radical in reperfusion injury.
Acetylcholine ; Animals ; Aorta ; Aortic Valve Stenosis ; Coronary Artery Bypass ; Coronary Sinus ; Coronary Vessels ; Endothelium ; Free Radicals ; Heart Septal Defects, Atrial ; Heart Septal Defects, Ventricular ; Heart* ; Humans ; Hydrogen Peroxide ; Lipid Peroxidation* ; Malondialdehyde ; Mitral Valve Insufficiency ; Mitral Valve Stenosis ; Molar ; Myocardial Infarction ; Myocardial Stunning ; Myocardium ; Neutrophils ; Nitroglycerin ; Oxygen* ; Plasma ; Relaxation ; Reperfusion Injury* ; Reperfusion* ; Respiratory Burst ; Tetralogy of Fallot ; Thoracic Surgery* ; Thrombolytic Therapy

Acute Coronary Syndrome ; therapy ; Angioplasty, Balloon, Coronary ; methods ; Catheter Ablation ; Coronary Angiography ; Heart Defects, Congenital ; therapy ; Heart Diseases ; therapy ; Humans ; Mitral Valve Stenosis ; therapy ; Rheumatic Heart Disease ; therapy ; Tachycardia ; surgery

Transcatheter aortic valve implantation and transcatheter mitral valve repair (MitraClip) procedures have been performed worldwide. In this paper, we review the use of two-dimensional and three-dimensional transesophageal echo for guiding transcatheter aortic valve replacement and mitral valve repair.
Aged ; Aged, 80 and over ; Aortic Valve Stenosis/*therapy/*ultrasonography ; Balloon Valvuloplasty ; Bioprosthesis ; *Cardiac Catheterization/adverse effects/instrumentation ; *Echocardiography ; Echocardiography, Doppler, Color ; Echocardiography, Three-Dimensional ; Echocardiography, Transesophageal ; Heart Valve Prosthesis ; Heart Valve Prosthesis Implantation/adverse effects/instrumentation/*methods ; Humans ; Mitral Valve Insufficiency/*therapy/*ultrasonography ; Predictive Value of Tests ; Prosthesis Design ; Severity of Illness Index ; Surgical Instruments ; Ultrasonography, Interventional/*methods