1.A Case of Heparin-Induced Thrombocytopenia (HIT) Diagnosed Which Waiting for Off-Pump Coronary Artery Bypass Grafting
Koyu Tanaka ; Soichi Shioguchi ; Shigeyoshi Gon ; Yoshihito Irie ; Takao Imazeki
Japanese Journal of Cardiovascular Surgery 2008;37(4):237-239
A 67-year-old man had angina pectoris due to left main trunk stenosis of coronary artery was transferred to our hospital. Anticoagulation was achieved with a continuous intravenous infusion of 625IU/h heparin. Sixteen days after admission, his platelet count decreased to 14×104/μl, and further decreased to 9.1×104/μl 4 days later. Since we suspected HIT, heparin administration was immediately discontinued, and was substituted with argatroban. A definitive diagnosis of type II HIT was made by a serologic test confirming positive antibodies to the heparin-platelet factor 4 (PF4) complexes. After the platelet count recovered, we performed off-pump CABG (OPCAB) using argatroban. The postoperative course was uneventful and platelet counts was normal. The patient was discharged on the 13th postoperative day. Heparin-induced thrombocytopenia, which causes thrombosis, is a serious side effect of heparin therapy. It is not rare, and in such case argatroban can be useful as an anticoagulant during OPCAB.
2.Survey of Doctors Changed Their Clinical Specialty from Cardiac Surgery
Shigeyoshi Gon ; Tsuyoshi Shimizu ; Sei Morizumi ; Yoshihiro Suematsu
Japanese Journal of Cardiovascular Surgery 2012;41(2):63-66
Some doctors change specialty from cardiac surgery to cardiology or peripheral vascular surgery or practice general medicine before retirement age. We carried out a survey to investigate their working conditions and reasons for changing their specialty. We sent questionnaires by mail to 154 doctors of whom 56 (36%) answered. The most common reason for changing specialty was taking over their family's practice, and the second most common reason was a small income. Actually, the annual income of 41 doctors increased after changing from cardiac surgery (75%). Many cardiac surgeons have to work with a years lest self-sacrifice and unpaid overtime work. Of the respordents 65% could not renew their Japanese Board of Cardiovascular Surgery, because of their limited operative numbers. If the current condition continues, the number of cardiac surgeons in Japan will decrease. It is necessary to improve working conditions and the environment so that surgeons can concentrate more on operations.
3.A Case of Concomitant Coronary Artery Disease, Abdominal Aortic Aneurysm, and Bile Duct Cancer
Soichi Shioguchi ; Yoshihito Irie ; Shigeyoshi Gon ; Koyu Tanaka ; Takao Imazeki
Japanese Journal of Cardiovascular Surgery 2007;36(2):92-95
We report a rare case of concomitant coronary artery disease, abdominal aortic aneurysm, and bile duct cancer. A 65-year-old man, who had been recognized to have jaundice in late November 2005, was found to have bile duct cancer, an abdominal aortic aneurysm with a diameter of 70mm, and coronary artery disease (with two severely diseased branches). To avoid extended operation, a two-stage operation was performed; at the first operation, off-pump coronary artery bypass surgery (LITA to LAD and Ao-SVG to 4 PD) and replacement of the abdominal aortic aneurysm by an artificial blood vessel with minimal incision were implemented. In 21 days after the cardiovascular surgery, the patient underwent pylorus-preserving pancreatoduodenectomy (modified Child method) in the second operation. After the two-stage operation, the patient showed a favorable outcome without any major complications. On the basis of the outcome of two-stage operation we successfully applied, we discuss the strategy for treatment of patients having both cardiovascular and abdominal malignant diseases, with reference to the literature.
4.Successful Surgical Treatment for Infective Endocarditis Involving the Aortic, Mitral, and Pulmonary Valves in a Patient with a Ventricular Septal Defect
Naoki Asano ; Kazunori Ota ; Kazuho Niimi ; Koyu Tanaka ; Masahito Saito ; Shigeyoshi Gon ; Hirotsugu Fukuda ; Hiroshi Takano
Japanese Journal of Cardiovascular Surgery 2017;46(4):161-164
A 46-year-old man who developed fever and general fatigue was referred to our hospital with suspicion of infective endocarditis. A ventricular septal defect had been previously diagnosed. Transthoracic echocardiography revealed vegetation on the aortic, mitral, and pulmonary valves, and each valve had significant regurgitation. An emergency operation was performed because of congestive heart failure. The aortic and mitral valves were replaced with mechanical valves. The pulmonary valve was repaired ; the anterior leaflet was resected and replaced by glutaraldehyde-treated autologous pericardium. The patient's postoperative course was uneventful. Recurrence of infection was not observed for 3 years after the operation. Triple-valve endocarditis, especially that involving a combination of the aortic, mitral, and pulmonary valves, is rare. Involvement of multiple valves on both sides of the heart may be attributed to a congenital intracardiac shunt. Early surgical intervention may be useful to control infection and heart failure, as in the present case.
5.Cardiac Papillary Fibroelastoma Which Occurred from the Tricuspid Valve
Koyu Tanaka ; Yohei Okita ; Masahito Saito ; Shigeyoshi Gon ; Yoshihito Irie ; Takao Imazeki
Japanese Journal of Cardiovascular Surgery 2009;38(1):79-82
Cardiac papillary fibroelastoma (CPF) is a rare benign cardiac tumor. It commonly arises from the left side heart valve. We present two rare cases of CPF that originating from the right side of the heart confirmed by surgical resection. Case 1 : A 67-year-old man was admitted for surgical resection of a cardiac tumor located in the right atrium. Transesophageal echocardiography revealed a mobile mass attached on the anterior leaflet of the tricuspid valve. The tumor was resected by open heart surgery. Histopathologic examination confirmed the tumor to be a CPF. Case 2 : A 68-year-old man was admitted for surgical resection of a tumor occurred from the tricuspid valve. Transthoracic echocardiography revealed a tumor attached to the medial leaflet. The tumor was resected. Histopathologic examination confirmed it to be a calcified mass. However, the surface of tumor had many papillary projections macroscopically. We redo the histopathologic examination, and confirmed the tumor as a CPF finally. In both cases, postoperative courses were uneventful.
6.The Leaving Hospital Program of the Patient with LVAD for Destination Therapy
Shigeyoshi Gon ; Yoshihiro Suematsu ; Sei Morizumi ; Tsuyoshi Shimizu ; Takashi Nishimura ; Shunei Kyo
Japanese Journal of Cardiovascular Surgery 2010;39(2):65-68
The left ventricle assist device (LVAD) has become an important therapeutic option in the treatment of acute or chronic heart failure. It is usually used as bridge to transplantation or recovery. At present, destination therapy with LVAD has been a therapeutic option in patients with heart failure in whom transplantation is not indicated. We describe a patient, who received destination therapy with LVAD, and was able to go home temporarily. The patient was a 63-year-old man with low output syndrome after acute myocardial infarction. An LVAD (TOYOBO) was implanted at Oita University Hospital, however the patient suffered from MRSA mediastinitis 6 months later. He and his family wished for him to temporarily go home to Ibaraki. The patient, supported by LVAD, was transferred from Oita to Ibaraki by a regular commercial flight and ambulance. Rehabilitation training involved stretching, in-bed muscle strength training, maintaining a standing position, walking on flat ground with a walker and going up and down ramps. All training was measured at the patient's home. The patient was out of hospital for 5 hours, and this period was uneventful upon leaving hospital. The patient also took an active part in rehabilitation after discharge. This program can help to improve the quality of life (QOL) of patients with implanted LVADs for destination therapy.
7.Limited Incision through a Retroperitoneal Approach in Abdominal Aortic Surgery
Hiroshi Kiyama ; Takao Imazeki ; Yoshihito Irie ; Noriyuki Murai ; Nobuaki Kaki ; Shigeyoshi Gon ; Masahito Saito ; Souichi Shioguchi
Japanese Journal of Cardiovascular Surgery 2003;32(6):325-328
To reduce surgical invasion, we recently used a limited incision through a retroperitoneal approach in the abdominal aortic surgery. Between May 2001 and March 2002, 18 patients who had infrarenal aortic aneurysm, iliac aneurysm, or aortoiliac occlusive disease were surgically treated using a new approach at Dokkyo University Koshigaya Hospital. Although 1 patient with a short aortic neck had to be converted to conventional surgical incision, the remaining 17 patients were successfully treated with the limited incision (range, 6-10cm). Operative time and intraoperative blood loss were 275.2±62.9min and 968.5±473.8ml, respectively. None of these patients required homologous blood transfusion in the perioperative period. All patients were extubated in the operation room. Oral feeding and mobilization started on day 1.6±0.5 and 1.4±0.9, respectively. Furthermore, all patients were discharged home without serious complications such as postoperative ileus and perioperative death. These results show that the limited incision through a retroperitoneal approach is safe and effective in the abdominal aortic surgery. This technique maintains quality outcome while reducing surgical invasion.
8.Dissected Abdominal Aortic Aneurysm in a 24-Year-Old Female-Minimally Invasive Right Retroperitoneal Approach-
Shigeyoshi Gon ; Takao Imazeki ; Hiroshi Kiyama ; Yoshihito Irie ; Noriyuki Murai ; Nobuaki Kaki ; Souichi Shioguchi ; Masahito Saito
Japanese Journal of Cardiovascular Surgery 2005;34(2):127-129
A 24-year-old woman with an abdominal aortic aneurysm (AAA) caused by mucoid medial degeneration of the aortic wall in the absence of Marfan syndrome is reported. She required a Y-shaped graft replacement of the abdominal aorta through a minimal incision and recovered successfully.
9.A Case of Ascending Aorta Pseudoaneurysm due to a Freestyle-Valve Free-Wall Fistula after a Modified Bentall Procedure with the Button Technique
Masahito Saito ; Yoshihito Irie ; Souichi Shioguchi ; Shigeyoshi Gon ; Nobuaki Kaki ; Hiroshi Kiyama ; Takao Imazeki
Japanese Journal of Cardiovascular Surgery 2005;34(2):156-158
We encountered a case of ascending aorta pseudoaneurysm due to a Freestyle-valve free-wall fistula after a modified Bentall procedure with the button technique. A 60-year-old man with Marfan's syndrome who contracted annuloaortic ectasia presented with the onset of Stanford A type acute aortic dissection 3 years ago. The patient underwent aortic root replacement with a Freestyle-valve and ascending and hemi-arch aortic replacement. Thirty-seven months after this operation the patient was re-operated because of pseudo-ascending aorta aneurysm. The cause of the pseudo-aneurysm was a fistula of the Freestyle-valve free-wall and the left coronary artety (LCA) ostial reconstruction component. The fistula was repaired by direct closure with pledgets. The patient was discharged from the hospital 24 days after the operation.
10.Cardiovascular Surgery in Patients 85 or Older
Shigeyoshi Gon ; Yasuyuki Yamada ; Ikuko Shibasaki ; Toshiyuki Kuwata ; Takayuki Hori ; Go Tsuchiya ; Masahiro Seki ; Yuriko Kiriya ; Takashi Kato ; Hirotsugu Fukuda
Japanese Journal of Cardiovascular Surgery 2014;43(4):170-176
Background : This study was performed to evaluate surgical outcomes after cardiovascular surgery (including urgent surgery) in patients 85 or older. Methods : A retrospective analysis was performed on 39 patients (mean age, 86.3 years ; age range, 85-90 years) who underwent total arch replacement (n=4), ascending aorta replacement (n=4), descending aorta replacement (n=1), aortic valve replacement (AVR ; n=13), mitral valve replacement or valvuloplasty (n=3), coronary artery bypass grafting (CABG ; n=9), CABG+AVR (n=4), tumor resection (n=1) between June 2008 and December 2012 at Dokkyo Medical University Hospital. Results : Six hospital deaths occurred. One patient died due to bleeding from a ruptured descending thoracic aortic aneurysm, and another patient died due to gastrointestinal perforation from non-occlusive mesenteric ischemia (NOMI) after urgent AVR. The other deaths were related to various complications, including lung cancer, cholecystitis, myocardial infarction, and Takotsubo cardiomyopathy, during the postoperative period. Overall 30-day mortality was 2.6%, hospital mortality was 12.8%, duration of hospital stay after surgery was 41.3 days, duration of intensive care unit (ICU) stay was 3.8 days and ventilator time was 49.1 h. Twenty patients underwent elective surgery, and 19 patients underwent urgent surgery. The two groups had similar preoperative characteristics, except for the number of patients with aortic disease. No significant difference was evident in hospital mortality (26.3% vs. 5%, p=0.065) or 30-day mortality (0% vs. 5.3%, p=0.3) when comparing the two groups. However, the duration of hospital stay (58.9 days vs. 27.5 days, p=0.049), ICU stay (6.74 days vs. 1.05 days, p=0.002) and ventilator time (89.9 h vs. 8.2 h, p=0.006) was significantly longer in the urgent surgery group than in the elective surgery group. Fourteen patients (70%) in the elective surgery group and four patients (21.1%) in the urgent surgery group were able to be discharged from the hospital to their homes within 30 days after surgery. These data demonstrated that cardiovascular surgery in patients 85 years of age or older was associated with satisfactory outcomes, and outcomes associated with elective surgery were even better than those associated with urgent surgery. Conclusions : Therefore, advanced age does not represent a contraindication of conventional cardiovascular surgery. Rather, the decision for surgery should take the patient's preoperative condition, the severity of concurrent medical disease, the wishes of the patient, and the predicted functional outcomes into account.