Munehisa Takata

Beating-heart totally endoscopic coronary artery bypass grafting: Report of a case

This case report presents beating-heart totally endoscopic coronary artery bypass grafting (TECAB) for single-vessel coronary artery disease. A 72-year-old man with isolated left anterior descending (LAD) coronary artery disease was considered eligible for TECAB. Left internal thoracic artery (LITA) mobilization and subsequent off-pump revascularization applying the LITA to the LAD in a closed chest environment was performed using the da Vinci surgical system (Intuitive Surgical, Mountain View, CA, USA). The LITA was first harvested completely in a totally skeletonized fashion through three incisions 1–2 cm long in the left thoracic wall. The LAD was immobilized with the aid of a heart stabilizer. The LITA was then anastomosed to the LAD with 10 interrupted sutures of a Nitinol self-closing S15 U-clip device (Medtronic, Minneapolis, MN, USA) on the beating heart without the use of cardiopulmonary bypass. The time acquired to perform anastomosis was 20 min, and the total operative time was 5 h 34 min. The postoperative course was uneventful and the patient was discharged 5 days after the operation. Beating-heart TECAB was successfully performed for this patient with single-vessel LAD disease. This approach may be an evolutionary step toward beating-heart multivessel TECAB.

Commissural Autologous Pericardial Patch Repair: A Novel Technique for Active Mitral Valve Endocarditis Involving the Mitral Annulus

In patients with massive destruction caused by mitral endocarditis, surgical valve repair remains a challenging issue. Although several procedures have previously been introduced, no standard method for complicated lesions has been established. We describe a technique of mitral valve repair for extensive destructive endocarditis involving both leaflets and the mitral annulus that has provided satisfactory initial results in 2 patients. This procedure is believed to be technically simple and beneficial in terms of mitral repair for active endocarditis.

A novel internal thoracic artery harvesting technique via subxiphoid approach – for the least invasive coronary artery bypass grafting

We have performed 12 cases of robotically assisted coronary artery bypass grafting (CABG) to accomplish less invasive revascularization. In this report, we describe a new method of robotically assisted internal thoracic artery (ITA) harvesting via subxiphoid approach, using the da Vinci surgical system. A 22-year-old man with three-vessel coronary artery disease due to Kawasaki disease was referred to our institution for coronary artery revascularization. A small subxiphoid incision was made, and the xiphoid process at the lower end of the sternum was excised. A U-shaped hook was inserted into the retrosternal space, and the lower sternum was lifted. A 30 degrees angle-up camera was inserted under the U-shaped hook, bilateral ITAs were harvested in a totally skeletonized fashion endoscopically. The required time for right ITA harvesting was 50 min, and that for the left was 20 min. After bilateral ITAs were harvested, composite grafts were made, and then the distal anastomoses were made. The patient was discharged six days after the operation. We performed a new robotically assisted bilateral ITA harvesting technique via sub-xiphoid safely and with excellent results. This method might be an evolutionary step of minimally invasive direct coronary artery bypass (MIDCAB) using the da Vinci surgical system.

Mycotic aneurysm of the left anterior descending coronary artery after coronary artery bypass graft surgery.

Mycotic aneurysms of the coronary artery are extremely uncommon and can be very difficult to diagnose. We report a unique case of a mycotic aneurysm of the left anterior descending coronary artery with a history of two-vessel off-pump coronary artery bypass graft surgery 9 months previously. The aneurysmectomy was successful.

Totally endoscopic closure of an atrial septal defect using the da vinci surgical system: Report of four cases

This report presents four cases of totally endoscopic closure of an atrial septal defect using the da Vinci Surgical System (Intuitive Surgical, Mountain View, CA, USA). The patients were diagnosed with an ostium secundum atrial septal defect and elected to undergo minimally invasive surgery. A cardiopulmonary bypass was established via cannulation of the femoral vessel and jugular vein, and blood cardioplegic arrest was induced using a transthoracic cross-clamp. The mean extracorporeal circulation and cardiac arrest times were 86 ± 21 and 22 ± 8 min, respectively. No patient experienced pain after surgery, and all were fast-tracked for early discharge and released on postoperative day 3. No intraoperative or postoperative complications occurred. This procedure permitted a short hospital stay, quick return to an active lifestyle, and had an excellent cosmetic outcome. The success of this procedure therefore encourages that this procedure should be considered as day surgery.

Surgical treatment of bilateral coronary-to-pulmonary artery fistulas

Bilateral coronary artery fistulas with the coronary artery stenosis are rare. In this case, we successfully performed closure of coronary artery fistulas with coronary artery bypass grafting. Furthermore, we were able to measure the flow in the coronary artery fistulas using transit-time flow measurement.

Double-patch sandwich repair for left ventricular free wall rupture

We present a case of a patient with left ventricular free wall rupture who successfully underwent emergency surgical repair using the double-patch sandwich technique. This technique has already been used for the treatment of left ventricular aneurysm and retains the proper shape and size of the left ventricle. Multislice computed tomography was fast and non-invasive in the detection of a ventricular rupture.

Endoscopic Radial Artery Harvesting: Patient Satisfaction and Complications

Endoscopic radial artery harvesting was recently introduced to reduce the morbidity associated with conventional open harvesting and improve cosmetic outcomes. From January 2004 through December 2006, 25 radial arteries were harvested endoscopically from 25 patients using the VasoView endoscopic system. Bilateral radial arteries were harvested from 6 patients by both the endoscopic and open techniques, and postoperative patient satisfaction was assessed using a visual analogue scale. Mean harvesting time was 61.9 ± 16.0 min (range, 44–105 min), and mean harvested conduit length was 16.8 ± 2.0 cm (range, 15–19 cm). Objective dorsal thenar numbness remained in 2 patients (8%); none complained of forearm numbness. All patients expressed marked satisfaction with the endoscopic technique and the small incision. Patient satisfaction was significantly higher with the endoscopic technique than with the open technique (visual analogue scale of 9 vs 5). Postoperative angiography revealed occlusion of a graft that had been anastomosed to a small diagonal branch. The overall graft patency was 96.6%. Endoscopic radial artery harvesting can be performed safely with infrequent complications. This method results in excellent patient satisfaction, particularly regarding the cosmetic outcome.

How I do it: high-quality intraoperative fluorescence imaging in off-pump coronary artery bypass grafting.

We have developed a simple technique for establishing high-quality intraoperative fluorescence imaging in off-pump coronary artery bypass grafting. The technique of transaortic injection of indocyanine green is an effective method of achieving clear fluorescence imaging and for evaluating the quality of graft anastomoses. We consider the images obtained with this technique to be equivalent to those obtained by conventional coronary angiography with selective enhancement of the graft.