1/88. Transcatheter occlusion of a post-Fontan residual hepatic vein to pulmonary venous atrium communication using the Amplatzer septal occluder.A residual hepatic vein to left atrial communication may result in progressive cyanosis after the fontan procedure. This problem has usually been treated surgically by ligation or re-inclusion of the residual hepatic vein in the Fontan circulation. Previous attempts at transcatheter closure of such veins have been unsuccessful. An Amplatzer septal occluder was successfully used for transcatheter closure of a post-Fontan hepatic vein to pulmonary venous atrium fistula in an 8 year old boy.- - - - - - - - - - ranking = 1keywords = circulation (Clic here for more details about this article) |
2/88. Septal branch right ventricular fistula: a complication in coronary artery snaring.We report a septal branch right ventricular fistula complicated after coronary snaring in coronary artery bypass surgery without aortic cross-clamping. The tip of the needle of the snaring suture is made blunt in order to decrease the risk of mechanical injury, but trauma to the septal branch is possible. This rare complication of snaring should be taken into consideration in performing aortic nonclamping coronary artery bypass surgery.- - - - - - - - - - ranking = 1017.1485874001keywords = coronary (Clic here for more details about this article) |
3/88. Transcatheter closure of a large coronary artery fistula with the Amplatzer duct occluder.We report the successful percutaneous closure of a large coronary artery fistula from the obtuse marginal artery to the right ventricle in an 8-month-old boy using the Amplatzer duct occluder. The device was positioned and deployed via the venous system, using a guidewire that had been advanced via the aorta, coronary artery, and fistula to the venous circulation. Cathet. Cardiovasc. Intervent. 48:188-190, 1999.- - - - - - - - - - ranking = 872.84164634296keywords = coronary, circulation (Clic here for more details about this article) |
4/88. A large coronary artery saphenous vein bypass graft aneurysm with a fistula: case report and review of the literature.We describe a patient who developed a large aneurysm of saphenous vein graft to the right coronary artery with a fistulous communication to the right atrium. The presence of a fistulous communication of a saphenous vein graft aneurysm after coronary bypass surgery to one of the heart chambers is extremely rare. The diagnosis was made by coronary angiography and confirmed by CT and MRI. At surgery the aneurysm was ligated and excised. The fistula to the right atrium was closed. Repeat coronary artery bypass surgery with aortic valve replacement was performed at the same time without complications. Cathet. Cardiovasc. Intervent. 48:214-216, 1999.- - - - - - - - - - ranking = 1162.4555284573keywords = coronary (Clic here for more details about this article) |
5/88. Intraoperative localisation and management of coronary artery fistula using transesophageal echocardiography.Coronary artery fistula is a rare congenital malformation that can be complicated by intracardiac shunts, endocarditis, myocardial infarction, coronary aneurysm and sudden death. Clinical symptomatology depends upon the underlying anatomy and the size of the fistulous connection between the left or right side of the heart. We report the successful management of a giant right coronary artery with fistulization into the right atrium. Intraoperative transesophageal echocardiography with colour flow Doppler was used for precise location of the fistulous communication, selective demonstration of vessels feeding the fistula and documentation of abolition of fistulous flow all without the need for cardiopulmonary bypass. Furthermore the effect of shunt occlusion on regional wall motion was documented which facilitated the successful ligation of the fistula.- - - - - - - - - - ranking = 871.84164634296keywords = coronary (Clic here for more details about this article) |
6/88. Left coronary artery-left ventricular fistula with acute myocardial infarction, representing the coronary steal phenomenon: a case report.A 59-year-old man presented with a left anterior descending coronary artery to left ventricular fistula manifesting as myocardial infarction, representing the coronary steal phenomenon. electrocardiography showed poor R progression in leads V1 through V3. The biochemical markers of myocardial injury were elevated. creatine kinase level was 509 IU/l, creatine kinase MB isoenzyme (CK-MB)47 IU/l, cardiac troponin t 0.62 ng/ml, myosin light chain 6.1 ng/ml, and myoglobin 142 ng/ml. thallium-201 myocardial perfusion imaging with dobutamine stress showed a dobutamine-induced perfusion deficit of the anteroseptal wall of the left ventricle with 0.1 mV ST-segment depression in II, III, aVF, V5, and V6. The mean left anterior descending blood flow measured with the Doppler guidewire was increased from 211 to 378 ml/min. Selective coronary arteriography showed dominant left coronary artery with the contrast medium streaming into the left ventricle via a maze of fine vessels from the distal left anterior descending coronary artery. No critical stenosis of the left anterior descending coronary artery was observed. Administration of acetylcholine 100 micrograms into the left coronary artery did not induce vasoconstriction of that artery. The fistula terminating in the left ventricle was ligated surgically and the patient became free of chest pain. thallium-201 myocardial perfusion imaging with dobutamine stress revealed no perfusion deficit of the anteroseptal wall of the left ventricle. The presence of coronary steal phenomenon was detected by dobutamine stress myocardial imaging.- - - - - - - - - - ranking = 2324.9110569146keywords = coronary (Clic here for more details about this article) |
7/88. Access recirculation in a native fistula in spite of a seemingly adequate access flow.True access recirculation (AR) measured by ultrasound dilution technique is usually absent in well-working shunts. It occurs with low access flows (Qa). High access flow rates are assumed to prevent AR. Two major exceptions to these rules are known: presence of intra-access strictures and inadvertently reversed blood lines. We present an additional exception in which true access recirculation occurred in a native arteriovenous (AV) fistula with correct placement of bloodlines. Surprisingly, access blood flow exceeded pump blood flow (Qb) almost threefold. The situation was clarified by a magnetic resonance angiogram showing a collateral forming a functional loop. This loop led to true access recirculation in one branch, although overall blood flow through both branches appeared to be adequate. The different findings in this shunt over time give insight into the often complex pathophysiology of native fistulae. This case proves that seemingly adequate access flow does not necessarily prevent access recirculation in native AV fistulae. We suggest monitoring both access flow and recirculation in hemodialysis accesses on a regular basis.- - - - - - - - - - ranking = 9keywords = circulation (Clic here for more details about this article) |
8/88. Diagnosis of a left coronary artery to right ventricular fistula with progression to spontaneous closure.Coronary artery fistulas in structurally normal hearts are rare. The natural history of these lesions depends on their size and can cause congestive heart failure, infective endocarditis, ischemia, or accelerated atherosclerosis. These fistulas are usually closed either in the catheterization laboratory or surgically. This case demonstrates the prenatal diagnosis of a left coronary to right ventricular fistula and documents its natural history to spontaneous closure by 1 year of age. This may help confirm the rationale of observation rather than closure of small fistulas in selected cases of patients without symptoms.- - - - - - - - - - ranking = 726.5347052858keywords = coronary (Clic here for more details about this article) |
9/88. Right coronary artery to left ventricular fistula associated with left ventricular aneurysm.An infant with right coronary artery to left ventricular fistula associated with left ventricular aneurysm successfully underwent a division of fistula under cardiopulmonary bypass. Follow-up angiogram showed the patency of the right coronary artery, no recurrence of fistula, and the regression of the left ventricular aneurysm. Because the lesion may progress with age, early diagnosis and surgical intervention are indicated to prevent later complications.- - - - - - - - - - ranking = 871.84164634296keywords = coronary (Clic here for more details about this article) |
10/88. Successful transcatheter coil embolization of coronary artery fistula in an infant.Congenital coronary artery fistula is a rare anomaly that can cause several types of morbidity as well as mortality. Recently, transcatheter coil embolization for congenital coronary artery fistula has been advocated as an effective alternative to surgical repair and is associated with a low morbidity and good clinical outcome. We report a 49-day-old infant who had tachycardia, tachypnea, prolonged and interrupted feeding, cardiomegaly, and continuous murmur, and who underwent successful transcatheter coil embolization for a congenital right coronary artery fistula. At review 1 year after coil occlusion showed that serial plain chest radiographs, myocardial enzyme analysis, electrocardiography, and wall motion on echocardiography were normal.- - - - - - - - - - ranking = 1017.1485874001keywords = coronary (Clic here for more details about this article) |
| | Next -> |