Publications by authors named "Mototsugu Tamaki"

Article Synopsis
  • The study focused on the prognostic value of phase angle (PhA), a measure of cellular health, in predicting long-term mortality among older patients undergoing cardiovascular surgery.
  • Researchers conducted a retrospective analysis of 858 patients who underwent surgery from October 2016 to March 2021, measuring PhA and various physical function metrics like gait speed and grip strength before the surgeries.
  • Results indicated that higher PhA levels correlated with better physical function and were linked to improved survival rates after surgery, emphasizing the potential use of PhA as a valuable prognostic indicator.
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Both perivalvular leakage and kinked prosthetic graft may cause hemolysis. A 72-year-old man was refereed to our hospital because of hemolytic anemia. He has past histories of total aortic arch replacement and repeat aortic valve replacement for aortic aneurysm and prosthetic valve endocarditis.

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Objectives: Cardiac rehabilitation (CR) is a class I recommendation in the treatment guidelines for cardiovascular disease; however, its postoperative prognostic effects after surgery are not fully understood. Therefore, this study aimed to examine the effect of multidisciplinary outpatient CR on postdischarge all-cause mortality in patients who underwent cardiovascular surgery.

Methods: This retrospective cohort study included consecutive patients who underwent elective cardiovascular surgery between April 2015 and March 2021.

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Although inferior mesenteric artery occlusion due to acute aortic dissection sometimes occurs, it is usually not considered an important finding. Herein, we present an extremely rare case of delayed bowel ischaemia due to inferior mesenteric artery occlusion in Stanford type A acute aortic dissection that highlights the need for cardiac surgeons to be mindful of inferior mesenteric artery occlusion in patients with superior mesenteric artery dissection or vascular anomalies in the mesenteric arteries.

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A 55-year-old man underwent aortic repair for acute aortic dissection. The pseudolumen of the Valsalva sinus was reapproximated with BioGlue by placing a sponge inside of it to prevent the BioGlue from entering. Postoperative contrast-enhanced computed tomography showed stenosis of the left main trunk.

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Background And Aim: Ischemic heart disease is the leading cause of death around the world. Coronary artery bypass grafting offers efficient surgical revascularization for ischemic disease. Both on- or off-pump coronary artery bypass methods provide promising results to octogenarians, once complete vascularization is achieved.

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Background: The coexistence of Leriche syndrome and thoracoabdominal aortic aneurysm is rare and challenging for surgeons especially if there are no distal anastomosis sites.

Case Report: A 56-year-old man with past medical histories of coronary artery bypass grafting and total arch replacement was planned to the surgery for thoracoabdominal aneurysm. His abdominal aorta was occluded just below the renal arteries and his terminal aorta, iliac and femoral arteries were hypoplastic.

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A modified transaxillary approach for aortic valve disease to obtain the same exposure as the anterior minithoracotomy approach and to preserve the pectoralis major muscle is presented. When the patient's right shoulder is adducted horizontally, or the right arm is flexed anteriorly 90 degrees and adducted to the left, the right axilla comes close to the chest midline. That means that a right anterior thoracotomy can be made through the right axilla when the arm position is adjusted appropriately.

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Aortoduodenal syndrome is a rare duodenal obstruction caused by an abdominal aortic aneurysm. Current treatment involves open aneurysmal repair according to the theory that this procedure releases the duodenum from mechanical compression. However, the mechanism of duodenal blockage remains unclear and reports of endovascular aneurysm repair (EVAR) for aortoduodenal syndrome are quite rare.

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Article Synopsis
  • A study on uncomplicated type B acute aortic dissection (UTBAAD) found that traditional medical treatments often lead to complications from prolonged bed rest.
  • * The researchers implemented a 'fast-track' rehabilitation program that included early mobility and reduced bed rest, leading to quicker patient recovery and fewer complications, such as pneumonia.
  • * Results showed that patients in the fast-track group had shorter hospital stays, lower medical costs, and no increase in adverse aortic events compared to those receiving standard treatment.
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Introduction: A case of malperfusion in which the patient presented with aortic dissection is presented.

Presentation Of Case: A 69-year-old man with an acute aortic dissection (Stanford type B) had lower limb ischemia. Axillary-femoral bypass was performed, and his lower limb ischemia improved.

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Background And Aim: Postinfarction ventricular septal defect is a potentially lethal complication of acute myocardial infarction for which surgical repair is mandatory. The infarct exclusion method has contributed to improving surgical outcomes, but a certain percentage of residual leakage continues to be reported. We considered possible mechanisms of residual leakage and modified the sewing method to overcome these mechanisms.

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An 88-year-old man was admitted with general fatigue. Computed tomography (CT) showed a descending aortic aneurysm. The laboratory data indicated severe infection.

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Background: Surgery for secondary mitral regurgitation is still controversial, especially when the left ventricle is damaged. The Mitra Clip has been shown to be safe and effective for certain patient groups but does not offer superior control of mitral regurgitation compared with the surgery. If performed safely, the surgery can provide greater benefits over the long-term.

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A 70-year-old man underwent cardiac surgery including left atrial appendage closure. A pigtail catheter was inserted into the pericardial sac because of delayed tamponade. Removal of the catheter was planned for 2 days after drain insertion.

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This article describes how to repair pacemaker lead-induced tricuspid regurgitation without removing the pacing leads. Our technique can eliminate the lead contact with the tricuspid leaflets and the tricuspid apparatus and is effective in preventing recurrence.

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Article Synopsis
  • - A study was conducted with cardiovascular surgery patients to assess the impact of neuromuscular electrical stimulation on muscle breakdown and physical performance, comparing it to standard post-surgery mobilization.
  • - Patients received the neuromuscular electrical stimulation on their legs eight times before and after surgery, while physical therapists measured various physical functions without knowing which group the patients were in.
  • - Results showed no significant differences in muscle breakdown or physical function between the two groups, indicating that more research is needed to understand the effectiveness and proper usage of this electrical stimulation technique.
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A 64-year-old man was admitted with sudden back and chest pain. He had undergone aortic valve replacement 5 years earlier. Enhanced computed tomography showed acute type A non-communicating aortic dissection.

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Open repair for infra-renal abdominal aortic and iliac artery aneurysms (AAAs) is a robust treatment. On the other hand, endovascular aneurysm repair (EVAR) has been widespread because of its less invasiveness. However, patients after EVAR frequently require postoperative radiographic examinations and may feel anxiety for their endoleaks.

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Objectives: To identify factors that determine early saphenous vein graft failure (VGF) within 1 month after coronary artery bypass grafting (CABG).

Methods: Seven hundred forty-nine consecutive patients underwent primary isolated CABG with saphenous vein grafts at three Japanese centres from 1 January 2005 to 31 December 2014. According to angiographic findings within 1 month of CABG surgery, 63 patients (8.

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