ABSTRACT
A 50-year-old man with a history of coronary artery bypass grafting (CABG) 5 years prior to presentation underwent MitraClip placement for severe mitral regurgitation. Subsequently, he underwent on-pump beating heart endoscopic minimally invasive cardiac surgery (MICS) for mitral valve replacement for acute heart failure secondary to single leaflet device attachment. Endoscopic MICS via a right small thoracotomy approach is useful for reoperation after CABG in patients with a high risk of graft injury. Beating-heart surgery may be an effective option to avoid the risks associated with prolonged cardiac arrest time in patients with low left ventricular function.
ABSTRACT
<p>Persistent sciatic artery (PSA) is a rare congenital vascular anomaly with an incidence ranging from 0.025 to 0.06% of the general population. We report a 65-year-old male patient with bilateral PSA suffering from intermittent right-calf claudication. Peripheral pulsations could be palpated well at the right common femoral artery but not at the right popliteal artery. His ankle brachial index (ABI) was 0.79 on the right and 0.99 on the left. Computed tomographic (CT) angiography demonstrated that the bilateral PSAs were branched from the internal iliac arteries and the right PSA was completely occluded, whereas aneurysmal change was not evident. Both superficial femoral arteries were incompletely developed. Blood flow to the peroneal artery, anterior and posterior tibial arteries were maintained in both lower legs via a network of collateral arteries. Arterial bypass from right common femoral artery to the above-knee popliteal artery using knitted Dacron graft was performed and postoperative ABI of the right lower limb improved to 1.06. Ten months after the intervention, the patient was then suffered from intermittent left-calf claudication caused by complete occlusion of left PSA, therefore, above-knee femoropopliteal arterial bypass using knitted Dacron graft was performed. PSA is often asymptomatic until a complication develops and the careful monitoring to prevent the risk of thromboembolic and aneurysmal events are recommended.</p>
ABSTRACT
A 76-year-old woman was admitted to our hospital because of sudden onset of chest pain and dyspnea. Echocardiography, chest CT, and cardiac catheterization revealed an isolated extracardiac unruptured left sinus of Valsalva aneurysm, with stenosis of the main trunk of the left coronary artery. Neither aortic regurgitation nor aortic annular dilatation was recognized. As an infection associated sinus of Valsalva aneurysm could not be ruled out, we performed patch closure using autologous pericardium and coronary artery bypass grafting to the left coronary system. The postoperative course was uneventful. One year after the operation, CT revealed that aneurysm of the left sinus of Valsalva had disappeared and that the grafts were patent.
ABSTRACT
We performed redo coronary artery bypass grafting (CABG) using lateral MIDCAB for 3 patients with severe symptomatic ischemia in the left circumflex system alone. When the descending thoracic aorta had no atherosclerotic lesions on chest CT, it was selected as the inflow of the bypass. According to the location of the target artery, we undertook sequential or T-composite off-pump bypass using the radial artery through a left lateral thoracotomy. On the other hand, when the descending aorta was diseased, the left axillary artery was chosen as the inflow of the bypass. We selected the saphenous vein as a conduit to obtain sufficient graft length. A proximal anastomosis was made through a left infraclavicular incision, and then a distal anastomosis was done through a left lateral thoracotomy without cardiopulmonary bypass. Moreover, care was taken not to kink the grafts. The postoperative course was uneventful in all patients. Lateral MIDCAB technique was useful for redo revascularization to the circumflex system. We believe that selection of bypass conduits, routes, and bypass inflow according to the individual patient is essential for the procedure.
ABSTRACT
NIPPV provides positive pressure ventilation through a face mask without intubation. We performed NIPPV for 2 patients with acute respiratory failure following cardiovascular surgery. (Case 1) A 63-year-old man, who had had COPD (Hugh-Jones class III), underwent replacement of the aortic arch. He was extubated after 5 days. However, he was re-intubated under controlled ventilation because of deterioration of his respiratory condition. The patient had NIPPV after extubation on postoperative day 14 because he was alert and had no cardiovascular compromise. On the 18th postoperative day he was weaned from NIPPV. (Case 2) A 67-year-old man underwent coronary artery bypass surgery. On the next day he was extubated, but he suffered from hypoxemia due to impaired respiratory condition on postoperative day 3. The patient underwent NIPPV instead of conventional mechanical ventilation because his condition was stable except for respiration. Respiratory condition improved quickly and he was weaned from NIPPV on the 7th postoperative day. NIPPV is an effective method for managing patients with acute respiratory failure after cardiovascular surgery.
ABSTRACT
Retroperitoneal lymphocele is a very rare complication of abdominal aortic aneurysm repair. An abdominal aortic aneurysm 5cm in diameter was repaired with the retroperitoneal approach in a 70-year-old man. On the 17th postoperative day, mild abdominal distention was reported and a fever of 38°C had developed. A computed tomography scan demonstrated massive fluid collection in the retroperitoneal cavity. Total parenteral nutrition with complete fasting was initiated. A pigtail catheter was inserted into the cavity, and 1, 000ml of milky, odorless, alkaline and sterile fluid was drained. Subsequently, a retroperitoneal lymphocele following abdominal aortic surgery was diagnosed. The leaking lymph tract was ligated because the lymphocele did not improve with long term drainage. Administration of ice cream through the nasogastric tube was used to detect the leaking lymph tract, and we ligated the leaking lymph tract completely. We believe that surgical repair is an alternative strategy when conservative treatments, i. e., fasting, intravenous hyperallimentation and drainage are not effective.
ABSTRACT
A 77-year-old man had undergone CABG (coronary artery bypass grafting) (SVGs (saphenous vein grafts) to LAD (left anterior descending coronary artery), OM (obtuse marginal) and RCA (right coronary artery)) 15 years previously. Three years previously, he underwent CABG again (LITA (left internal thoracic artery)-OM, RGEA (right gastroepiploic artery)-RCA) due to recurrence of angina pectoris, but there was no evidence of graft disease in the SVG to the LAD. Six months before the present procedure, graft disease developed in the SVG to the LAD and caused unstable angina pectoris. Therefore, the left axillary artery was bypass grafted to the coronary artery (LAD) using SVG without cardiopulmonary bypass by means of the MIDCAB (minimally invasive direct coronary artery bypass) technique. The patient has had no angina pectoris subsequently. Postoperative angiography revealed that the graft was patent. The axillo-coronary (LAD) bypass appears to be a useful procedure for re-revascularization to the LAD in patients with no available arterial graft, such as ITA (internal thoracic artery) or RGEA.
ABSTRACT
A 67-year-old man was considered a candidtate for CABG because coronary angiogram showed obstruction segment 6 and stenoses of segments 9 and 12. He underwent emergency CABG due to acute myocardial infarction (AMI) with cardiogenic shock caused by hemorrhage from a gastric ulcer. Because of hypoxia due to pulmonary edema and acute renal failure an intraaortic baloon was inserted. He had a history of cerebrovascular stroke. Although coronary angiogram revealed multiple vessel disease, we performed off-pump coronary artery bypass (saphenous vein graft-left anterior descending artery) for salvage, because cardiopulmonary bypass was considered very risky and further systemic heparinization might be fatal. He has returned to his job, and is now free from angina. As AMI with cardiogenic shock is often caused by a lesion in the LAD, CABG without cardiopulmonary bypass may be an effective technique in certain selected patients.
ABSTRACT
A 76-year-old man with multivessel disease in the coronary artery and abdominal aortic aneurysm, including the bilateral common iliac artery aneurysms, underwent off-pump coronary artery bypass (OPCAB) combined with repair of the aneurysms. We were able to perform three coronary artery bypass graftings (left internal thoracic artery-left anterior descending artery, saphenous vein graft-diagonal branch, and saphenous vein graft-atrio-ventricular branch) using an Octopus 2 and a“Lima”suture technique without cardiopulmonary bypass. The postoperative course was uneventful. All grafts were patent on postoperative angiograms. OPCAB combined with repair of abdominal aortic aneurysm was useful for the high-risk patient.