1.Graft Replacement of an Abdominal Aortic Aneurysm Previously Treated by Endovascular Stent Grafting in Two Cases
Toshiro Ito ; Nobuyoshi Kawaharada ; Yoshihiko Kurimoto ; Kenji Kuwaki ; Ryou Harada ; Yousuke Kuroda ; Kiyohumi Morishita ; Tetsuya Higami
Japanese Journal of Cardiovascular Surgery 2007;36(3):141-144
Ninety patients with abdominal aortic aneurysm underwent endovascular stent grafting in our hospital between 2001 and 2006 and two patients required graft replacement of abdominal aortic aneurysms during the late postoperative phase. Case 1 was a 77-year-old man for whom endovascular stent grafting for an abdominal aortic aneurysm and thoracic aortic aneurysm had been performed concomitantly. Six months later, because the abdominal aortic aneurysm had expanded from 68mm to 75mm in diameter, due to a type I endoleak which was detected postoperatively, he underwent open surgery. An occlusion balloon was inflated at the proximal site of the celiac artery until the stent graft was extracted. After positioning the aortic clamp below the origin of the renal arteries, a bifurcated graft was implanted. The postoperative course was uneventful. Case 2 was an 86-year-old woman who had undergone endovascular stent grafting for an abdominal aortic aneurysm. The endovascular procedure was successful and no endoleak was detected postoperatively. However, 13 months later, a community hospital admitted her in a state of shock due to ruptured abdominal aortic aneurysm. She was transferred to our hospital and underwent an emergency operation. Because insertion of an occlusion balloon into the brachial artery failed, we primarily performed supravisceral aortic cross clamping. After opening the aneurysm sac, the stent graft was removed and a bifurcated graft was implanted. After declamping, we found that the right common iliac artery was occluded, and therefore aorto-right external iliac bypass grafting was then also performed. The postoperative course was uneventful.
2.Complementary Medicine & Mucosal Immunology-Recent Topics around Inflammatory Bowel Disease
Toshinori ITO ; Yasuyuki KAI ; Takumi IGURA ; Seiichi NAKAJIMA ; Toshiro NISHIDA ; Tsunekazu MIZUSHIMA ; Riichiro NEZU
Japanese Journal of Complementary and Alternative Medicine 2008;5(2):85-101
Complementary medicine aimed at improving patients’ QOL by complementing modern medicine has recently become the focus of attention. These alternative supplements or functional foods are commonly biologically based. Contained within food itself, these specialized components serve a tertiary function regarding biological regulation and defense. Further, in vivo mechanisms are considered to be closely linked to mucosal immunity of the intestine. As the mechanism of innate immunity is further elucidated, the significant role of certain food components in relation to mucosal immunity of the intestine has become a focus of interest.
In this paper, I would like to describe the experimental and clinical applications of complementary medicine in cases of chronic and/or intractable inflammatory bowel disease.
3.A Successful Case of Selective Intercostal Arterial Perfusion in a Patient with Ruptured Thoraco-Abdominal Aortic Aneurysm
Tomohiro Nakajima ; Toshiro Ito ; Nobuyoshi Kawaharada ; Mayuko Uehara ; Yohsuke Yanase ; Masaki Tabuchi ; Akihiko Yamauchi ; Tetsuya Higami
Japanese Journal of Cardiovascular Surgery 2009;38(4):273-275
A 61-year-old man underwent thoracic aortic graft replacement and abdominal aortic graft replacement because of a dissecting aneurysm. He presented with a ruptured residual dissecting thoraco-abdominal aortic aneurysm and underwent emergency thoraco-abdominal aortic graft replacement in February 2007. An inverted bifurcated graft was fashioned by cutting one of the two graft legs and creating an elliptical patch, like a cobra-head. In order to prevent paraplegia after the operation, it was necessary to shorten the duration of spinal cord ischemia. Once the elliptical patch was sutured to the orifices of the internal costal arteries with running sutures, selective intercostal arterial perfusion was initiated by using a cardiopulmonary bypass. After the operation, he did not suffer paraplegia.
4.Endovascular Repair of Chronic Aortic Dissection Expansion from Distal Fenestration in Previous Graft Replacement
Toshiro Ito ; Yoshihiko Kurimoto ; Nobuyoshi Kawaharada ; Tomohiro Nakajima ; Masaki Tabuchi ; Mayuko Uehara ; Yousuke Yanase ; Akihiko Yamauchi ; Toshio Baba ; Tetsuya Higami
Japanese Journal of Cardiovascular Surgery 2008;37(6):345-348
A 58-year-old man was admitted because of enlargement in diameter of the descending thoracic aorta. Six years previously, he had undergone graft replacement of the proximal descending aorta due to a chronic dissecting aneurysm. During that surgery, distal fenestration involving resection of the intimal flap of the distal anastomotic site and graft replacement with distal anastomosis of the true and false lumen were performed. Our preoperative enhanced computed tomography (eCT) revealed a thoracic aortic aneurysm 58mm in diameter at the site of distal fenestration. Graft replacement through left lateral thoracotomy was considered difficult because of previous occurrence of methicillin-resistant Staphylococcus aureus (MRSA) empyema after the previous operation: hence, endovascular repair was done using a handmade stent graft to interrupt blood flow into the false lumen. The postoperative course was uneventful. Postoperative eCT showed the thrombosed false lumen and the shrinkage of the aneurysm from 58 to 38mm in diameter over a period of 18 months.
5.Effect of Heart Rate and Body Mass Index on the Interscan and Interobserver Variability of Coronary Artery Calcium Scoring at Prospective ECG-Triggered 64-Slice CT.
Jun HORIGUCHI ; Noriaki MATSUURA ; Hideya YAMAMOTO ; Masao KIGUCHI ; Chikako FUJIOKA ; Toshiro KITAGAWA ; Katsuhide ITO
Korean Journal of Radiology 2009;10(4):340-346
OBJECTIVE: To test the effects of heart rate, body mass index (BMI) and noise level on interscan and interobserver variability of coronary artery calcium (CAC) scoring on a prospective electrocardiogram (ECG)-triggered 64-slice CT. MATERIALS AND METHODS:One hundred and ten patients (76 patients with CAC) were scanned twice on prospective ECG-triggered scans. The scan parameters included 120 kV, 82 mAs, a 2.5 mm thickness, and an acquisition center at 45% of the RR interval. The interscan and interobserver variability on the CAC scores (Agatston, volume, and mass) was calculated. The factors affecting the variability were determined by plotting it against heart rate, BMI, and noise level (defined as the standard deviation: SD). RESULTS: The estimated effective dose was 1.5 +/- 0.2 mSv. The mean heart rate was 63 +/- 12 bpm (range, 44-101 bpm). The patient BMIs were 24.5 +/- 4.5 kg/m2 (range, 15.5-42.3 kg/m2). The mean and median interscan variabilities were 11% and 6%, respectively by volume, and 11% and 6%, respectively, by mass. Moreover, the mean and median of the algorithms were lower than the Agatston algorithm (16% and 9%, respectively). The mean and median interobserver variability was 10% and 4%, respectively (average of algorithms). The mean noise levels were 15 +/- 4 Hounsfield unit (HU) (range, 8-25 HU). The interscan and interobserver variability was not correlated with heart rate, BMI, or noise level. CONCLUSION: The interscan and interobserver variability of CAC on a prospective ECG-triggered 64-slice CT with high image quality and 45% of RR acquisition is not significantly affected by heart rate, BMI, or noise level. The volume or mass algorithms show reduced interscan variability compared to the Agatston scoring (p < 0.05).
Adult
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Aged
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Aged, 80 and over
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*Body Mass Index
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Calcium/*analysis
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Coronary Angiography/*methods
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Coronary Vessels/*chemistry
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*Electrocardiography
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Female
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*Heart Rate
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Humans
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Male
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Middle Aged
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Observer Variation
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Prospective Studies
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Tomography, X-Ray Computed/*methods
6.A Case of Lymphangiography Treatment with Lipiodol for Postoperative Chylomediastinum after Redo Mitral Valve Surgery
Toshiro ITO ; Shunsuke OHHORI ; Masato SUZUKI ; Kiyotaka MORIMOTO ; Hideo YOKOYAMA ; Youhei OHKAWA
Japanese Journal of Cardiovascular Surgery 2020;49(6):354-357
A 71-year-old female, who had diabetes mellitus and chronic renal failure on dialysis, had undergone mitral valve repair and tricuspid valve annuloplasty. Five months after the operation, she suffered from infectious endocarditis and underwent mitral valve replacement. Postoperatively, a total fluid volume of 300 to 600 ml/day was drained from the pericardial tube, and its appearance became milky after the start of oral intake of food. She was diagnosed with chylomediastinum. Despite fasting and total parenteral nutrition for 2 weeks and subcutaneous octreotide administration, the volume of fluid drainage was not reduced. Therefore, we planned lymphangiography treatment with Lipiodol on postoperative day 37. On operation, under local anesthesia, the left inguinal lymph node was punctured under ultrasound guidance, and Lipiodol was injected at a rate of 12 ml/h for 1h. On the next day, the volume of fluid drainage was reduced, and the pericardial tube could be removed 9 days after lymphangiography.
7.Epicardial Ablation of Ventricular Tachycardia by Re-median Sternotomy in a Patient with Double Mechanical Heart Valves
Masato SUZUKI ; Yohei OHKAWA ; Hideo YOKOYAMA ; Toshiro ITO ; Kiyotaka MORIMOTO ; Shunsuke OHORI
Japanese Journal of Cardiovascular Surgery 2021;50(3):174-177
The patient is a 39-year-old-man who had rheumatic heart disease and had undergone mitral and aortic valve replacements with mechanical St. Jude prostheses as well as tricuspid valve repair and a MAZE procedure 17 years previously. He was admitted with ventricular tachycardia (VT) and an implantable cardioverter-defibrillator (ICD) was implanted. Four months later, he was admitted again with VT, and attempts to manage the VT with drugs were not successful. We performed electro-anatomical mapping and ablation for VT by re-median sternotomy. His postoperative course was uneventful. At 15 months after surgery, no recurrence of VT was recognized.
8.A Case of Commando Procedure for Paravalvular Leakage after Redo Aortic Valve Replacement and Mitral Valve Replacement
Ryo TAKAYANAGI ; Masato SUZUKI ; Shun WATANABE ; Shunsuke OHHORI ; Ryo SUZUKI ; Kiyotaka MORIMOTO ; Hideo YOKOYAMA ; Toshiro ITO
Japanese Journal of Cardiovascular Surgery 2022;51(6):354-358
A 76-year-old female was admitted with complaints of dyspnea on exertion and lower leg edema. She had undergone an aortic valve replacement thirty-nine years before and a redo aortic valve replacement and mitral valve replacement twenty-eight years before. She also had hemolytic anemia with jaundice. Echocardiography showed severe paravalvular leakage in the aortic and mitral valves, and a blood flow in the aortic annulus that flows from the aortic side into the left atrium. We diagnosed heart failure and hemolytic anemia due to paravalvular leakage and decided to perform a double-valve replacement for the third time. On operation, after removing the aortic valve through aortotomy, aorto- mitral fibrous continuity was extensively calcified and perforated, and its strength was not enough to sew the prosthetic valve to it. Therefore, we decided to perform the Commando procedure. Aortotomy was extended between the noncoronary aortic sinus and the left coronary aortic sinus until it reached the dome of the left atrium. After the prosthetic mitral valve was excised, annuloplasty of the posterior mitral annulus was performed using a bovine pericardial patch, and the new prosthesis mitral valve was implanted. The anterior part of the annulus corresponding to the aorto-mitral fibrous continuity was reconstructed by sewing the base of a two-tongued triangular bovine pericardial patch to the sewing cuff of the mitral prosthesis. After closing the left atrial ceiling with the posterior patch, the aortic prosthesis was secured to the aortic annulus and the pericardial patch. The anterior patch was used to close the right side of the aortotomy. The postoperative course was uneventful, and postoperative echocardiography revealed no paravalvular leakage.
9.A Case of Stanford Type A Acute Aortic Dissection after Surgery for Esophageal Cancer
Hiroki UCHIYAMA ; Toshiro ITO ; Toshitaka WATANABE ; Naomi YASUDA ; Junji NAKAZAWA ; Yosuke KURODA ; Ryo HARADA ; Nobuyoshi KAWAHARADA
Japanese Journal of Cardiovascular Surgery 2018;47(4):192-195
A 76-year-old man with a history of total esophagectomy and retrosternal gastric tube reconstruction for esophageal cancer was transferred to our hospital because of consciousness disorder. It became an emergency operation on diagnosis of Stanford type A acute aortic dissection on enhanced CT. Because CT showed the retrosternal gastric tube ran along the right side of the body of the sternum through the back side of the manubrium, we opted for skin and the suprasternal incision on the left side from center. We could perform total aortic arch replacement without the damage of the gastric tube except that the right side of the operative view was slightly poor. We did not recognize digestive organ symptoms such as postoperative passage disorders nor mediastinitis. The patient was discharged from our hospital on postoperative day 24.