Effective Management with IMPELLA CP® and Hypothermia Therapy for a Case of Severe Ischemic Coronary Disease after Cardiopulmonary Arrest / 日本心臓血管外科学会雑誌

A 67-year-old man was admitted to our hospital following cardiopulmonary arrest (CPA) during work. After resuscitation, coronary angiography revealed left main coronary artery stenosis and three-vessel disease. We considered that coronary artery revascularization was required, but the neurological prognosis was unknown. Thus, an IMPELLA CP® device was inserted and systemic management, including hypothermic therapy, was initiated. Circulatory conditions were stable during hypothermia therapy. Rewarming was initiated 24 h later, and we confirmed no abnormal neurological findings. Emergency off-pump coronary artery bypass was then performed. During the procedure, hemodynamic status was maintained using the IMPELLA CP® device. After surgery, the patient was discharged without neurological complications. We report the management of a patient with severe three-vessel disease after resuscitation for CPA using an IMPELLA CP® device and hypothermic therapy.

A Case of Minimally Structural Deterioration in Starr-Edwards Caged-Disk Valve 39 Years after Implantation / 日本心臓血管外科学会雑誌

<p>The durability of the Starr-Edwards (SE) mitral caged-disk valve, model 6520, is not clearly known. We reported that SE mitral caged-disk valves implanted ＞20 years previously should be carefully followed up, and that SE caged-disk valves implanted ＞30 years previously should be electively replaced with modern prosthetic valves in our experience. We found the removed valve 39 years after implantation, which seemed minimal structural deterioration. The patient was discharged on the 10th postoperative day without any complications.</p>

A Suspected Case of Heyde Syndrome with Bleeding of the Small Intestine before Aortic Valve Replacement for Severe Aortic Valve Stenosis / 日本心臓血管外科学会雑誌

The patient was a 74-year-old woman who had undergone mitral valve replacement with a mechanical valve for rheumatic mitral valve stenosis at age 60. She was scheduled for aortic valve replacement for severe aortic stenosis. However, she had significantly worsening anemia before the operation. Capsule endoscopy showed angiodysplasia with bleeding in her small intestine, which was considered the cause of the anemia. Because of progressive anemia, we tried embolization under angiography. However, there was no evidence of extravasation. Neither melena nor exacerbation of anemia was observed, and she underwent aortic valve replacement. She was discharged on postoperative day 22 without gastrointestinal bleeding. Heyde syndrome is aortic valve stenosis associated with gastrointestinal bleeding induced by von Willebrand disease and angiodysplasia in small intestine. Molecular multimeric analysis of von Willebrand factor and the existence of angiodysplasia with hemorrhage of the digestive tract are important for definitive diagnosis. Capsule endoscopy, which is a general examination, is more useful for diagnosis than molecular multimeric analysis of von Willebrand factor. Aortic valve replacement is the only therapeutic option for Heyde syndrome. It is important to decide the appropriate timing of AVR with cardiopulmonary bypass.

Surgical Results of Valvular Disease in Hemodialysis Patients / 日本心臓血管外科学会雑誌

<b>Background</b> : The Japanese Society for Dialysis Therapy in 2011 reports that the number of hemodialysis patients has been increasing and that there is an increase in long-term hemodialysis patients and the aging of hemodialysis induction. Therefore, it can be expected that the number of valve surgeries in chronic hemodialysis patients will increase. However, there are many problems between chronic hemodialysis and valve surgery. <b>Objectives</b> : To describe the results of valve surgery in chronic hemodialysis patients at our institution and evaluate the selection of prosthetic valve and associated problems. <b>Methods</b> : Between January 2001 and June 2011, a total of 29 patients on chronic hemodialysis including 3 patients for re-operation, underwent valve replacements. The average age was 67.3±9.3 years and 17 (65%) were men. The average dialysis duration was 7.9±6.4 years. The etiologies of renal failure were 8 for chronic glomerulonephritis (31%), 8 for nephrosclerosis (31%) and 3 for diabetic nephropathy (12%). <b>Results</b> : There were 2 (7.7%) in-hospital deaths, which resulted from ischemia of intestine and multiple organ failure due to heart failure. Twelve (46%) patients died during the follow-up period and the 5-year survival rate after surgery was as poor as another authors have reported previously (30.6%). However, the 5-year survival rate after hemodialysis introduction was 87.1%, which was better than the report of the Japanese Society for Dialysis Therapy in 2011 (60%). Average age was significantly higher in bioprosthetic valves than in mechanical valves (<i>p</i>=0.02). There was no significant difference in survival rate among mechanical and bioprosthetic valves (<i>p</i>=0.75). There was no significant difference in valve-related complication free rate among mechanical (27.5%) and bioprosthetic valves (23.4%) (<i>p</i>=0.9). Three patients with mechanical valves had cerebral hemorrhage, and 1 patient with bioprosthetic valve had structural valve deterioration. <b>Conclusions</b> : Surgical result of valvular disease in hemodialysis patients was as poor as another authors reported previously (5-year survival rate : 30.6%), but survival rate after hemodialysis introduction was not very poor (87.1%). There was no significant difference in survival rate among mechanical and bioprosthetic valves. Bioprosthetic valve has the risk of reoperation due to early structural valve deterioration, but there was no significant difference in valve-related complication free rates. Therefore, we should select prosthetic valve in consideration of individual cases.

Aortic Valve-Sparing Operation in a 8 Years Old Boy with Loeys-Dietz Syndrome with Annuloaortic Ectasia / 日本心臓血管外科学会雑誌

An 8 year-old boy had a cardiac murmur pointed out on day three after birth and was given a diagnosis of ventricular septal defect (VSD). He underwent VSD patch closure at two months after birth. He was also found the having Loeys-Dietz syndrome on the basis of mutation of <i>TGFBR2 </i>and physical examination at the age of 2 years. He had been followed up at pediatrics clinic of our hospital since then, and was hospitalized for a 46.5-mm extension of valsalva sinus diameter and moderate aortic insufficiency. The aortic valve was three-cusped and had no abnormality. We performed valve-sparing aortic root replacement. He was discharged on day 18 after the operation without any problems in the postoperative course. Use of an artificial heart valve for the surgery of the aortic root lesion in childhood will probably cause reoperation in the future and difficulty in Warfarin anticoagulation control. A careful decision is needed in the choice of an operation method. Valve-sparing aortic root replacement is a useful operation for patients without aortic valve abnormality.

New Anticoagulation Control for Toyobo-LVAS Using the CoaguChek XS^® / 日本心臓血管外科学会雑誌

Aggressive anticoagulation therapy is necessary when Toyobo-LVAS is used for long-term treatment of severe heart failure. However, it is necessary to regulate it carefully if there is a hemorrhagic complication due to thromboembolism, but repeated blood testing is painful. We compared simple measurement with the CoaguChek XS^® with the conventional blood testing method. The correlation coefficient was 0.916, and the regression line was <i>Y</i>=0.8027<i>X</i>+0.3399. In addition, drawing blood using the CoaguChek XS^® was very effective in the reported pain reduction in patients.