1.Replacement of the Aortic Root and Ascending Aorta for Acute Aortic Dissection in a Patient with Liver Cirrhosis (Child-Pugh Class B) and Hepatic Cell Carcinoma
Koki Nakamura ; Mikiko Murakami ; Tomohiro Asai ; Yosuke Saito ; Hiroki Yamaguchi
Japanese Journal of Cardiovascular Surgery 2007;36(1):15-18
A 62-year-old man was referred to us because of acute aortic dissection (Stanford type A). He had had liver cirrhosis (Child-Pugh class B) and hepatic cell carcinoma in the left lateral lobe, which had been resected 3 years ago. On admission he was drowsy and was in shock. CT showed dissection from the ascending aorta to the abdominal aorta. Echocardiography revealed severe aortic regurgitation. An emergency operation was indicated although it was a very high risk procedure. Under cardiopulmonary bypass with moderate hypothermia, the aortic root was replaced with a Freestyle valve (23mm). Then the ascending aorta was replaced with a woven Dacron graft (28mm) under cardiac arrest and isolated cerebral perfusion. Postoperatively, he had cardiac tamponade and cerebral infarction (perhaps due to the preoperative events). However, he was successfully discharged on the 34th postoperative day.
2.Acute Aortic Dissection Occurring on the Day after Coronary Artery Bypass Operation
Koki Nakamura ; Yuji Suda ; Yosuke Saito ; Mikiko Murakami ; Tomohiro Asai ; Hiroki Yamaguchi
Japanese Journal of Cardiovascular Surgery 2007;36(4):215-217
A 73-year-old woman was referred to our hospital for angina pectoris due to triple-vessel-disease. She underwent off-pump coronary artery bypass grafting ×3 (RITA-LAD, LITA-OM, SV-PDA). Her vital signs were stable during the operation and the postoperative status was steady in the ICU. However, on the next day, she suddenly had severe back pain with markedly elevated blood pressure. Urine output immediately shut down and respiratory failure progressed with time. An enhanced CT scan revealed aortic dissection (DeBakey type I and Stanford type A). An emergency operation was performed via re-sternotomy. Cardiopulmonary bypass was initiated and the body was cooled down to 20°C. Under circulatory arrest with isolated cerebral perfusion, the ascending aorta was replaced using a one-branched Hemashield graft (26mm in diameter). The entry of the dissection was located at the proximal anastomosis site of the vein graft. The postoperative course was uneventful and she was discharged on the 24th postoperative day.
3.Distal Arch Replacement for Intrathoracic Left Subclavian Artery Aneurysm in a 68-Year-Old Man
Koki Nakamura ; Mikiko Murakami ; Tomohiro Asai ; Yosuke Saito ; Yuji Suda ; Hiroki Yamaguchi
Japanese Journal of Cardiovascular Surgery 2007;36(4):218-220
A 68-year-old man was referred to our hospital with an abnormal shadow on chest X-ray film. Enhanced chest CT scan revealed intrathoracic left subclavian artery aneurysm (maximum diameter 4cm) just above the aortic arch. Surgery was indicated considering the risks of aneurysm rupture and distal embolism, although he was asymptomatic. Under left 4th posterolateral thoracotomy, the aneurysm was exposed. Cardiopulmonary bypass was initiated with cannulation of the left femoral artery and vein (to the right atrium). Circulatory arrest and isolated cerebral perfusion were achieved at 25°C core-temperature. The distal arch was replaced using a 26mm Hemashield graft and the left subclavian artery was reconstructed interposing an 8mm graft. The postoperative course was uneventful: he was extubated at 8h and was sent to the ward the next day. He was given an ambulatory discharge on the 13th postoperative day.
4.Sealed Rupture of an Internal Iliac Artery Aneurysm in a 92-Year-Old Woman Surgically Treated with Success
Koki Nakamura ; Tomohiro Asai ; Mikiko Murakami ; Yosuke Saito ; Yuji Suda ; Hiroki Yamaguchi
Japanese Journal of Cardiovascular Surgery 2007;36(5):281-283
A 92-year-old woman was referred to our hospital with lower abdominal pain and lumbago. Her vital signs were stable at an emergency outpatient-clinic. An enhanced CT scan showed a sealed rupture of a right internal iliac artery aneurysm (85×73mm in diameter). An emergency operation was performed via median laparotomy. As predicted pre-operatively, a large hematoma was found in the retroperitoneal space and mesenterium surrounding the right internal iliac artery aneurysm (sealed rupture). Y-grafting was performed using a 16×8mm Intergard: proximal and distal ends of the graft were the abdominal aorta and bilateral femoral arteries, respectively. Left common iliac artery, right external iliac artery and right internal arterial aneurysm were suture-closed. The postoperative course was uneventful and she was discharged on the 13th postoperative day on foot.
5.Surgical Repair of Giant Coronary Artery Aneurysm Associated with Coronary-Pulmonary Artery Fistulae in a 73-Year-Old Woman
Koki Nakamura ; Yosuke Saito ; Tomohiro Asai ; Mikiko Murakami ; Yuji Suda ; Hiroki Yamaguchi
Japanese Journal of Cardiovascular Surgery 2007;36(6):325-328
A 73-year-old woman was referred to our hospital with a feeling of chest compression. Coronary angiography revealed a giant coronary artery aneurysm, located in the middle of a coronarypulmonary artery fistula originating at the left anterior descending artery. Also another fistula was shown between the right coronary artery and the pulmonary artery. Surgical correction was indicated due to the risks of the aneurysm rupture and coronary events. Under cardiopulmonary bypass, suture-closure of the coronary artery aneurysm and ligation of the fistulae were carried out with success. Transesophageal echocardiography was useful to confirm disappearance of the abnormal shunts after the operative procedures. The postoperative course was uneventful. Postoperative coronary angiography showed no aneurysm or fistula. She was discharged on the 11th postoperative day on foot.
6.Case Report of CABG Undergone in a Patient with Malignant Hyperthermia Risk and AT III Deficiency.
Koki Nakamura ; Takato Hata ; Yoshimasa Tsushima ; Mitsuaki Matsumoto ; Sohei Hamanaka ; Hidenori Yoshitaka ; Genta Chikazawa ; Susumu Shinoura ; Satoru Otani
Japanese Journal of Cardiovascular Surgery 2000;29(4):268-271
Malignant hyperthermia (MH) and antithrombin III (AT III) deficiency are both rare, but once they occur, the patient's prognosis is very poor. A 67-year-old man was referred to our hospital with a diagnosis of unstable angina. A coronary angiography revealed stenosis of LMT and triple vessels. The patient was considered a candidate for CABG. He had been prescribed 50mg/day of dantrolene for frequent muscular convulsions of the lower extremities. He had had a high CK level for a few years. Therefore he was considered to be at high risk for malignant hyperthermia (MH). He underwent CABG (×4). Dantrolene was administered orally at a dose of 25mg and then 160mg intravenously before anesthesia and modified NLA was performed in order to avoid probable MH. During the operation, AT III deficiency was suspected because the reaction of ACT after heparinization was poor. AT III preparation (1, 500 units) was used and CABG under cardiopulmonary bypass was completed without any events. It was proved after the surgery that the AT III volume had been almost normal but its activity had decreased. His postoperative course was good. For possibly fatal MH and AT III deficiency, it is necessary and important to predict, prevent and diagnose as early as possible.
7.Forearm Problems after CABG Using Radial Artery Grafts.
Koki Nakamura ; Takato Hata ; Yoshimasa Tsushima ; Mitsuaki Matsumoto ; Sohei Hamanaka ; Hidenori Yoshitaka ; Makoto Mohri ; Genta Chikazawa ; Susumu Shinoura ; Kazushi Minami ; Satoru Otani
Japanese Journal of Cardiovascular Surgery 2000;29(6):368-372
There have been many reports radial artery grafts (RA) are useful in CABG, but there were very few reports about hand grasping power (GP), edema and sensory disturbance after surgery. From January to April, 1999, RA were used for 14 patients (R group) and were not in 16 patients (C group) among a total of 30 coronary artery bypass grafting procedures. The patients in the two groups were statistically similar. RA were anastomosed to #12 in 9 patients and #14 in 5. GP and the circumference of forearms were examined and sensory disturbance was also checked preoperatively and at 1, 2 and 4 weeks postoperatively. In both groups, left GP decreased slightly after surgery but gradually recovered. Four weeks after surgery, it was 26.2±9.6kg in the R group and 26.2±7.5kg in the C group (NS). The difference between left and right circumference of forearms, which indicates the degree of edema, was significantly larger in the R group than in the C group (3.5±3.6mm vs. -0.5±3.8mm, 1 week postoperatively, p<0.05). However, it gradually improved in the R group (2.1±2.6mm at 2 weeks and 1.9±2.6mm at 4 weeks postoperatively). No sensory disturbance was seen at any time. Therefore we conclude that using RA in CABG is not only useful but is also safe and does not increase postoperative risk.
8.4-2 A New Style of Medical Education under the COVID-19 Pandemic
Kaoru TOSHIMA ; Fumi SHISHIDO ; Hirohito METOKI ; Yoshiko KAWAI ; Shunsuke KAWAMOTO ; Junichi KAMEOKA ; Takashi SASAKI ; Koki OKAMOTO ; Tomohiro ARIKAWA ; Yutaka NAKAMURA ; Mitsuo KAKU ; Isao OHNO
Medical Education 2020;51(3):222-223
9.Relationship between Treatment Choices according to the Modified Osteoporotic Fracture Score and Posttreatment Radiographic Outcomes
Shinya TOKUNAGA ; Toshiyuki TAKAHASHI ; Koki MITANI ; Tomoo INOUE ; Ryo KANEMATSU ; Manabu MINAMI ; Izumi SUDA ; Sho NAKAMURA ; Junya HANAKITA
Asian Spine Journal 2024;18(2):251-259
Methods:
Consecutive patients diagnosed with OFs at Fujieda Heisei Memorial Hospital were divided into three groups: nonsurgical therapy, balloon kyphoplasty (BKP), and open surgery groups. The mOF score was calculated, and the levels of independence and posttreatment imaging data were compared between patients treated and not treated according to the mOF score-based treatment recommendation.
Results:
In total, 118 patients were included (nonsurgical therapy, n=57; BKP, n=48; open surgery, n=13), of whom 100 (85%) received treatment consistent with the mOF score-based treatment recommendation. In the BKP and open surgery groups, the mOF scorebased treatment recommendations were consistent with the actual treatment in 93% of the patients. However, in the nonsurgical group, the mOF score-based treatment recommendation was not consistent with the actual treatment in 25% of the patients. In this group, patients not treated according to the mOF score had significantly shorter vertebral body height, greater local kyphosis, and smaller sacral slope after treatment than patients treated according to the mOF score-based treatment recommendation.
Conclusions
In the BKP and open surgery groups, the mOF scores were consistent with actual clinical selection. In the nonsurgical therapy group, patients not treated according to the mOF score-based treatment recommendation exhibited severe vertebral body deformity and a less well-balanced spine shape after treatment. The mOF score may help in selecting suitable treatments for OFs.
10.Clinical study on the prevention of recurrent tonshillitis by acupuncture (III)
Keishi YOSHIKAWA ; Kazushi NISHIJO ; Kazuhiro YAZAWA ; Hidetoshi MORI ; Tomomi SAKAI ; Akihiro OGATA ; Kazuo SASAKI ; Toshikazu SHIMA ; Hiroki SUGA ; Mikio NAKAMURA ; Shuichi KATAI ; Katsumi KURIHARA ; Takeshi TOMIYASU ; Masahiro KIMURA ; Takanori KAWANO ; Koki KOBAYASHI ; Koichi WADA ; Harumi TAKETANI ; Akemi YAMAMOTO
Journal of the Japan Society of Acupuncture and Moxibustion 1984;34(1):15-22
We have conducted acupuncture treatment for prevening the relapse of recurrent tonsillitis. We previously noted the effectiveness of this treatment in 121 of 239 patients treated in 1980, especially in elementary school children. In the present study, we compared the annual days of absence from school and the body dimensions of children with tonsillitis given acupuncture treatment with those having tonsillar hypertrophy chosen by a school study, although there is a question on the latter's propriety as a control group in a strict sense, in order to investigate the degree of spontaneous healing included in the preventive effects of acupuncture treatment on the relapse of recurrent tonsillitis.
By May 1983, our reseach was completed in 22 children with tonsillitis given acupuncture treatment and 19 with tonsillar hypertrophy not given such therapy. In children with tonsillitis given acupuncture treatment, the average annual days of absence from school before treatment was 14.0, which was more than that for all children in the S elementary school, and that in the year after treatment was 6.5, approximating that for all children in the school. In children with tonsillar hypertrophy not given acupuncture treatment, the average number of days of absence was close to that for all children in the S elementary school in both years.
Among 14 children with tonsillitis given acupuncture treatment, lower values of height and weight were noted in eight and 12 children, respectively, at the beginning of treatment, as compared with the national averages. The body dimensions of children with tonsillar hypertrophy not given acupuncture treatment were similar to the national averages. Of 14 children with tonsillitis given acupuncture treatment, an increase to a value exceeding the national average was observed with both the height and weight in six children, the height in two and the weight in one within the year after treatment.
The above results show that children with tonsillitis have a problem from the educational and developmental standpoint, even if they do not have a focal tonsil. We think that acupuncture treatment is worth attempting prior to tonsillectomy, although it is not so surely effective as tonsillectomy, when the severity of operative stress on the living body due to tonsillectomy and the burden of medical expenses and the load on the patient's family caused by hospitalization are taken into consideration.