Search Results
Results 501 - 550 of 1130
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Nili M - - 1999
OBJECTIVE: The internal thoracic artery has become the conduit of choice for coronary artery bypass grafting. To avoid spasm of the artery, and increases in its diameter and flow, various vasodilators have been used either intraluminally or by topical application by different surgeons. In order to define the best vasodilating ...
Wendler O - - 1999
OBJECTIVE: Complete arterial coronary artery bypass grafting with 2 grafts can be achieved even in triple vessel disease by use of a T configuration. There is still uncertainty whether the coronary flow reserve in the main stem of the left internal thoracic artery is sufficient to supply more than 1 ...
Schwabegger A H - - 1999
The aim of this interdisciplinary study was to evaluate power Doppler imaging as a method of collecting reliable preoperative data concerning the diameters and topography of exemplary internal mammary vessels as recipient vessels in reconstructive microsurgery. Thirteen female patients (range, 37 to 58 years; mean, 45.6 years) were examined preoperatively ...
Wolf R K - - 1999
BACKGROUND: It has been stated that thoracoscopic internal thoracic artery (ITA) mobilization is not recommended in the redo minimally invasive direct coronary artery bypass (MIDCAB) situation, presumably because adhesions from the previous coronary artery bypass grafting operation may preclude a thoracoscopic approach. However, there are advantages to thoracoscopic ITA mobilization ...
Schmalfuss CM - - 1999
BACKGROUND: Internal mammary artery (IMA) as conduit for a coronary artery bypass graft (CABG) stays patent longer and more often than saphenous vein (SV). However, the precise differences in the biology of IMA and SV are unclear. METHODS AND RESULTS: To examine inherent difference in superoxide anion, superoxide dismutase (SOD) ...
Falk V - - 1999
BACKGROUND: Due to limited range of motion, endoscopic multivessel revascularization is difficult through a thoracic approach. METHODS: A computer-enhanced surgical telemanipulation system was used to perform transabdominal endoscopic grafting (TCAB) in an experimental cadaver model. After incising the membranous portion of the diaphragm, pericardium, and pleura, dissection of the left ...
Hata M - - 1999
A 61-year-old male was referred to the surgical ward by cardiologists because of a diagnosis of unstable angina with 3-vessel disease. On preoperative left internal thoracic arteriography, a large first intercostal branch was found at the proximal portion. Selective arterial embolization of the branch of the left internal thoracic artery ...
Katz W E - - 1999
Despite its merits, minimally invasive direct coronary artery bypass surgery (MIDCAB) has been criticized for variable left internal mammary artery (LIMA) graft patency rates, prompting the frequent use of postoperative LIMA angiography. Noninvasive transthoracic Doppler interrogation of LIMA grafts has recently been shown to have utility for assessing patency and ...
Vlassov G P - - 1999
BACKGROUND: The purpose of this study was to examine the feasibility of performing totally endoscopic myocardial revascularization through the abdominal cavity. METHODS AND RESULTS: The right gastroepiploic artery was harvested endoscopically through three troacars in 46 human cadavers. Then, a 5-cm hole was made in the diaphragm to expose the ...
Boehm D H - - 1999
BACKGROUND: To achieve an endoscopic coronary bypass anastomoses we performed a study with endoscopic robotic instrumentation and camera guidance using three-dimensional (3-D) visualization. METHODS: The surgical robotic system ZEUS (Computer Motion Inc, Goleta, CA) consists of three interactive robotic arms and a control unit allowing the surgeon to move the ...
Kuwabara M - - 1999
Genus Gordona is included in mycolic acid containing bacteria. This genus infection is very rare and occurs classically in immuno-compromised patients. We report a patient who developed mediastinitis due to Gordona sputi after coronary artery bypass grafting (CABG) using left internal mammary artery. Immunocompromised factors were not noticed in this ...
Louvard Y - - 1999
The aims of this study were to assess the feasibility of routine transradial coronary angiography in a standard population of patients with presumed coronary artery disease over a period of time long enough to allow for technical evolution and evaluation of a single operator's learning curve, and to provide data ...
Busk H - - 1999
The purpose of the investigation was to examine the response of the milk vein and the mammary artery to potential vasoactive substances in lactating sows. The response on artery and vein segments from the same sow was measured for the following substances: noradrenaline (NA), serotonin (5-HT), prostaglandin F2alpha (PGF2alpha), prostacyclin ...
Cohen A J - - 1999
OBJECTIVE: This study prospectively evaluates the effect on sternal vascularity of harvesting the left internal thoracic artery. METHODS: Twenty-four consecutive patients undergoing primary coronary artery bypass grafting were studied. One patient's procedure was altered during the operation, and he was eliminated from the study. The patients were prospectively randomized to ...
Stephenson E R ER - - 1999
BACKGROUND: With traditional instruments, endoscopic coronary artery bypass grafting (ECABG) has not been possible. This study was designed to determine the feasibility of using a robotically-assisted microsurgical system to perform ECABG in a chronic animal model. METHODS: Nine calves were placed on cardiopulmonary bypass after harvesting the left internal mammary ...
Jansen E W - - 1999
False aneurysms of the internal mammary artery are extremely rare. A case of false aneurysm of a branch of the right internal mammary artery after median sternotomy is reported. A large right-sided mediastinal mass was seen on the thoracic radiogram. A false aneurysm was suspected on CT-scan and confirmed by ...
Gaudino M - - 1999
We report one case in which chronic native competitive flow from an almost normal target coronary artery did not influence IMA graft patency. This patient underwent control postoperative angiography 11 months after surgery and the mammary artery-left anterior descending graft was found to be normofunctioning despite the fact that the ...
Kawata T - - 1999
OBJECTIVES: We have investigated the effects and outcome from grafting the right internal thoracic artery to the left anterior descending artery in coronary artery bypass grafting. METHODS: We analyzed the findings in 185 patients who underwent coronary artery bypass grafting involving right internal thoracic artery-left anterior descending artery bypass. The ...
Loulmet D - - 1999
OBJECTIVE: The development of endoscopic coronary artery bypass grafting has been limited because of poor visualization and increased technical difficulties in carrying out operations through ports. We investigated whether the use of robotic assisted instruments could minimize these difficulties. METHODS: After a period of technical development and training on cadavers ...
Pragliola C - - 1999
BACKGROUND: It has been reported that large side branches of internal thoracic artery grafts may steal flow from the coronary circulation. Material an. METHODS: To assess the importance of the side branches, we measured the proximal and distal flow and pressures (mean subclavian artery pressure and mean arterial anastomotic pressure) ...
Miyaji K - - 1999
In November 1995, video-assisted minimally invasive direct coronary artery bypass procedure, which is defined as a combination of the thoracoscopic internal mammary artery (IMA) harvest and direct coronary bypass grafting, was introduced for patients who need minimally invasive direct coronary artery bypass (MIDCAB) using IMA. In the thoracoscopic IMA harvest, ...
Simić O - - 1999
Arterial myocardial revascularization using different arterial conduits as mammary, radial, gastroepiploic, subscapular and epigastric arteries are well documented. This report describes a preparation and use of thoracodorsal artery as a free graft for coronary artery bypass grafting. The preparation and removal of thoracodorsal artery were performed through right axilla. The ...
Carrel T - - 1999
The introduction of new techniques allowing direct coronary artery revascularisation without sternotomy and extracorporeal circulation--called Minimally (or less) Invasive Direct Coronary Artery Bypass grafting (MIDCAB)--has opened up interesting perspectives for the treatment of patients with limited coronary artery disease. However, like any newer surgical technique, this approach to myocardial revascularisation ...
Aguero O R - - 1999
We present a new method of myocardial revascularization. The radial artery is used in combination with the left internal mammary artery, thereby providing three distal end-to-side anastomoses to the left anterior descending coronary artery and other sites as determined by the coronary artery lesions. Arterial conduits form an anastomotic network ...
Sakata R - - 1999
In 285 patients, the right internal thoracic artery, routed through the transverse sinus, was in most cases anastomosed to the circumflex branches. In 278 cases, the left internal thoracic artery was simultaneously used for revascularization of the left anterior descending artery. Two patients died (mortality rate 0.7%). Postoperative early angiography ...
Piazza L - - 1999
We describe the long-term results of a case of complete myocardial revascularization with arterial conduit employing also lateral costal artery (LCA). A fifty-four-year-old man underwent revascularization with the implant of right internal artery mammary (RIMA) on the second portion of the right coronary artery (RCA), of the left internal mammary ...
Sharifi M - - 1999
Perforation of newly placed left internal mammary artery (LIMA) grafts due to stent deployment is an infrequent but potentially dangerous complication of coronary interventions. It may lead to brisk hemorrhage and massive cardiac tamponade requiring emergent pericardiocentesis and surgery. We report a case of a LIMA graft perforation following stent ...
Gulielmos V - - 1999
Minimally invasive surgery has been used successfully in patients with single-vessel coronary artery disease (CAD), but there are no clinical reports of surgical techniques for the treatment of multivessel disease in this field using both internal mammary arteries (IMAs). Therefore a canine model has been established to demonstrate the feasibility ...
Tovar E A - - 1999
Interval development of a significant stenosis at the origin of the left internal thoracic artery (LITA) after this vessel has been used to revascularize the anterior descending coronary artery may be an indication for reoperation. We present an extrathoracic approach to bypass the proximal segment of the LITA that allows ...
Renner S M - - 1999
Previous radiotherapy to the thorax is a risk factor for coronary artery disease. Patients with radiation-induced atherosclerosis tend to be young and frequently have lesions involving the coronary ostia and left anterior descending artery. Bypass is often the most suitable method of revascularization, and given the young age of the ...
Sarraj A - - 1999
A case of pseudoxanthoma elasticum of the left internal mammary artery from a 61-year-old male who underwent coronary artery bypass grafting is reported. Intraoperative evaluation of the left internal mammary artery revealed partial stenosis. Histologically, the stenotic portion showed pseudoxanthoma elasticum. This represents the first reported case of pseudoxanthoma elasticum ...
Cremer J - - 1999
OBJECTIVE: Anastomosing the left anterior descending artery (LAD) by use of the internal mammary artery (IMA) via an anterior minithoracotomy represents the most commonly performed minimally invasive direct coronary artery bypass (MIDCAB). However, little is known about angiographic results beyond patency rates. METHODS: Therefore, a retrospective analysis of 205 consecutive ...
Pitsis A A - - 1999
We report a new strategy of total arterial revascularization based on bilateral internal thoracic arteries (ITAs) and a radial artery (RA). The technique employs a graft extension of the proximal third of the right internal thoracic artery (RITA) with the RA, in combination with the T-graft technique, by which the ...
Nataf P - - 1999
A new technique allowing revascularization of the left coronary artery through a small thoracotomy after videoscopic harvesting of both mammary arteries is proposed in patients with total laryngectomy. This anterior thoracotomy approach, of real interest in patients with a preexisting tracheostomy, needs to be compared with a classic sternotomy in ...
Noirhomme P H - - 1999
BACKGROUND: To overcome problems of lack of conduit and to maximize the number of arterial anastomoses in coronary reoperations we reused previously placed arterial grafts. METHODS: Sixteen patients were identified from February 1994 to July 1997. Mean age was 62.8 years (range, 44 to 75 years). Fifteen (94%) were in ...
Hashimoto M - - 1999
PURPOSE: The purpose of this study was to determine the factors influencing development of blood supply from the internal mammary artery and to discuss the value of embolization of the abnormal branches from this vessel using small particles following occlusion of the normal distal branches using microcoils in treating hemoptysis. ...
Massetti M - - 1999
BACKGROUND: Safe harvesting of the left internal thoracic artery is a difficult problem during minimally invasive coronary artery bypass grafting without cardiopulmonary bypass. A complete internal thoracic artery dissection through a limited approach is technically demanding and time consuming and different techniques have been proposed. METHODS AND RESULTS: Based on ...
Hagl C - - 1999
STUDY OBJECTIVES: Coronary artery bypass graft (CABG) surgery using the left internal mammary artery (LIMA) impairs postoperative pulmonary function. We studied the changes in pulmonary function and subjective pain relative to the site of chest tube insertion. DESIGN: Thirty patients undergoing CABG surgery using the LIMA were randomized into two ...
Harff G A - - 1999
We compared the changes in troponin T, creatine MB isoenzyme mass concentration (CK-MB mass), creatine kinase MB isoenzyme activity (CK-MB activity), creatine kinase (CK), alpha-hydroxybutyrate dehydrogenase (HBD), lactate dehydrogenase (LD) and aspartate aminotransferase (AST) concentrations after coronary artery grafting with saphenous vein grafts, without or in combination with uni- or ...
Sperti G - - 1999
We studied the response of radial artery (RA) or left internal mammary artery grafts to the intraluminal infusion of serotonin in 22 consecutive patients 1 year after the operation, subsequently evaluating the effect of diltiazem in 9 patients. Serotonin causes a significant vasoconstriction of the RA grafts, but not of ...
Rerkpattanapipat P - - 1999
Left internal mammary arteries (LIMA) are used routinely as grafts to the left anterior descending coronary artery (LAD) in selected patients undergoing coronary artery bypass graft (CABG) surgery because of better long-term patency rates. Pathology other than fibrointimal hyperplasia, accelerated atherosclerosis, or thrombus can sometimes cause obstructive lesions in such ...
Sim E K - - 1999
BACKGROUND: Minimally invasive cardiac surgery is a new and promising approach to the treatment of coronary artery disease allowing surgery to be performed through smaller incisions with lesser morbidity. METHODOLOGY: From November 1995 to February 1997, ten minimally invasive direct coronary artery bypass (MIDCAB) grafts were performed. The left internal ...
Seligman R W - - 1999
The utility of intra-arterial Doppler flow in assessing internal mammary artery (IMA) bypass grafts has infrequently been reported. Two patients are described in which Doppler evaluation of the IMA graft provided valuable diagnostic information prior to intervention. Also provided is a review of the available literature concerning evaluation of pathology ...
Jellish W S - - 1999
We compared the effect of three different asymmetric sternal retractors on brachial plexus dysfunction using intraoperative somatosensory evoked potentials (SSEPs). We studied 60 patients undergoing coronary bypass and internal mammary harvest. Assessment of brachial plexus function was performed pre- and postoperatively. Patients were assigned the use of a Pittman (MN ...
Vaughn C C - - 1999
Injury of a patent internal thoracic artery bypass graft in a patient during cardiac reoperation could have catastrophic results. In selected patients who have primary coronary artery bypass grafting using the internal thoracic artery, we wrap the artery pedicle with an expanded polytetrafluoroethylene membrane to facilitate identification and to protect ...
Kane-ToddHall S M - - 1999
BACKGROUND: There is increasing interest in the radial artery (RA) as a coronary artery bypass graft (CABG). However, few studies have examined the prevalence of pre-existing disease in this vessel. METHODS: Histological specimens from 177 RA were compared with 168 of internal mammary artery (IMA) and 86 of long saphenous ...
Ducko C T - - 1999
BACKGROUND: Endoscopic coronary artery bypass grafting (ECABG) has not been possible with traditional techniques. This report details our animal experience determining the feasibility of using a robotically-assisted microsurgical system to perform ECABG. METHODS: Following preliminary work using a cadaveric pig heart model, acute and chronic animal studies were performed. Calves ...
Tang Chen Y B - - 1999
Twelve intractable funnel chests in young adults were treated with revascularization of the turnover sternum. The sternum and costal composite tissue were resected at the outskirt of the depressed area. Special attention was paid to the dissection of the vascular pedicle at both sides of the internal mammary vessels. The ...
Tabaie H A - - 1999
BACKGROUND: Technical details of the Robotically assisted endoscopic coronary artery bypass graft (ECABG) procedure on the cadaver model are reported. Moreover, this study will provide essential techniques, steps, and procedural development concepts necessary to introduce the ZEUS Robotic Surgical System (Computer Motion, Inc., Goleta, CA) into the human operating room. ...
Douville E C - - 1999
BACKGROUND: Minimally invasive direct coronary artery bypass (MIDCAB) has been criticized as compromising anastomotic patency. Epicardial mechanical stabilization devices purportedly facilitate left internal mammary artery (LIMA) anastomosis, thereby enhancing patency and outcome. METHODS: From June 1996 through January 1999, 39 patients underwent MIDCAB via a small left anterior thoracotomy for ...
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