1.A New Technique for Composite Graft Preparation in Aortic Root Replacement
Yasuhiro Sawada ; Shunsuke Sakamoto ; Kazuya Fujinaga ; Nin Tanaka ; Toru Mizumoto
Japanese Journal of Cardiovascular Surgery 2012;41(5):247-249
We report the Lampshade Technique : a new technique using Carbo-Seal Valsalva (Sorin Biomedica, Saluggia, Italy) to facilitate preparation of a composite graft. A Bentall operation and an ascending aorta replacement were performed with a composite graft using a Carbo-Seal Valsalva. This new technique can be considered useful as it can reduce the time required for preparing a composite graft, and create a skirt portion for continuous suturing to prevent bleeding.
2.Abdominal Aortic Aneurysm with Right Ectopic Kidney
Hideyuki Akashi ; Toru Ishizaka ; Hideo Tanaka ; Masahisa Masuda ; Goro Matsumiya
Japanese Journal of Cardiovascular Surgery 2012;41(5):266-269
We present the case of a 68-year-old woman with abdominal aortic aneurysm (AAA) complicated by right ectopic kidney, in another term, congenital pelvic kidney. The patient underwent AAA repair and right renal artery reconstruction using renal perfusion with cold Ringer's acetate, and no deterioration of renal function was observed. 3D-CT was essential diagnostic procedure in order to identify the blood supply to the ectopic kidney for planning a careful surgical technique.
3.Allergy and Flavonoid
Toshio TANAKA ; Toru HIRANO ; Shinji HIGA ; Junsuke ARIMITSU ; Mari KAWAI
Japanese Journal of Complementary and Alternative Medicine 2006;3(1):1-8
The prevalence of allergic diseases such as asthma, allergic rhinitis and atopic dermatitis has increased all over the world during the last two decades. Dietary change is supposed to be associated with this increase. If it is the case, an appropriate intake of foods or drinks with anti-allergic functions is expected to stop the increase. Flavonoids, ubiquitously present in vegetables, fruits or teas possess anti-allergic activities. Flavonoids inhibit histamine release, synthesis of IL-4 and IL-13 and CD40 ligand expression by basophils and mast cells. Analyses of structure-activity relationships of representative flavones showed that luteolin, apigenin and fisetin were the strongest inhibitors of IL-4 production with an IC50 value of 2–5 μM and determined a fundamental structure for the inhibitory activity. Quercetin and kaempferol showed a substantial activity with an IC50 value of 15–18 μM. The inhibitory activity of flavonoids on IL-4 and CD40 ligand expression were thought to be mediated through their inhibitory action on activation of nuclear factor of activated T cells and AP-1. Administration of flavonoids into atopic dermatitis-prone mice prevented the onset of dermatitis and serum IgE elevation and ameliorated the severity of dermatitis even after the onset. In addition a preliminary trial of flavonoids for adult patients with atopic dermatitis showed a significant effect. Recent epidemiological studies reported that a low incidence of asthma was significantly observed by population with a high intake of flavonoids. Thus, these evidences will be helpful for the development of low molecular compounds for allergic diseases and it is expected that an appropriate daily intake of flavonoids may be an effective complementary and alternative medicine and a preventative strategy for allergic diseases.
4.Type B Acute Aortic Dissection: The Prognosis and Fate of the Dissected Lumen of Nonsurgical Treated Patients.
Kenji SASAKI ; Shigeo TANAKA ; Masatoshi IKESHITA ; Tadahiko SUGIMOTO ; Tasuku SHOJI ; Teruo TAKANO ; Keiji TANAKA ; Tatsuo KUMASAKI ; Toru OYA
Japanese Journal of Cardiovascular Surgery 1993;22(4):322-327
From March 1981 to March 1990, 61 patients with Stanford type B acute aortic dissection were initially treated by conservative therapy. Among these 61 patients, the dissected lumen became occluded due to thrombosis early after diagnosis in 25 patients (Group T) and remained patent in 36 patients (Group P). Twentythree patients in Group T (92%) and 22 patients in Group P (61%) were discharged without major complications related to acute aortic dissection. However, 2 patients in Group T (8%) and 14 patients in Group P (39%) required additional surgical therapy or died during hospitalization. The mean aortic diameter at the time of admission in Group T was smaller than that of Group P (38±3mm vs 43±7mm, p<0.05). During the observation period, there was a tendency for the diameter of the dissected aorta in Group T to decrease, but to increase in Group P. Long-term survival appeared to be better in Group T than in Group P, but there was no significant difference in the overall survival curve. Large aortic diameter at the time of admission and the presence of a true thoracic aortic aneurysm were major contributing factors influencing the prognosis. A long-term follow-up study showed that the dissected lumen reduced or disappeared in 14 of 23 patients in Group T (61%) but only 2 of 16 patients in Group P (12.5%). We concluded that the patients with small dissected aortas and thrombosed dissected lumens (Group T) can recuperate only with conservative therapy. However, patients with large dissected aortas and patent dissected lumen (Group P) may require surgical therapy even in Stanford type B aortic dissection.
5.Sarcoma Causing Mitral Valvular Dysfunction That Rapidly and Specifically Infiltrated into the Mitral Valve
Shunsuke Sakamoto ; Kenichiro Fujii ; Yasuhiro Sawada ; Yu Shomura ; Jin Tanaka ; Toru Mizumoto
Japanese Journal of Cardiovascular Surgery 2016;45(3):112-114
Primary cardiac malignant tumors are relatively rare, and their prognosis is poor. We report a patient with sarcoma causing severe mitral regurgitation and stenosis due to rapid and specific infiltration into the mitral valve.
6.Cardiac Surgery in Patients with Chronic Dialysis.
Susumu Manabe ; Hiroyuki Tanaka ; Koso Egi ; Satoru Hasegawa ; Masazumi Watanabe ; Nagahisa Oshima ; Toru Sakamoto ; Makoto Sunamori
Japanese Journal of Cardiovascular Surgery 2002;31(1):18-23
This study was designed to evaluate the perioperative outcome of dialysis patients undergoing cardiac surgery, who were managed with our perioperative dialysis program. Between April 1994 and August 1999, 11 patients (7 men and 4 women with a mean age of 57.3±10.3 (36-73)) with hemodialysis (HD, n=8) and peritoneal dialysis (PD, n=3) underwent cardiac surgery. The duration of dialysis was 5.6±4.3 years. Operation included mitral valve replacement (n=1) and isolated coronary artery bypass grafting (n=10). Patients with HD had single hemodialysis on the day before operation. Patients with PD were maintained on PD in the usual manner until the day before surgery. Intraoperative hemofiltration during extra-corporeal circulation and normokalemic non-depolarizing cardioplegic solution were used in all patients to avoid post-operative hyperkalemia. All HD patients had dialysis on the first post-operative day (POD 1), and then every other day. PD patients had PD soon after arriving at the ICU. Levels of serum creatinine, urea nitrogen, acid-base balance were successfully controlled within acceptable ranges. No patients required emergency HD or any post-operative managements for hyperkalemia in the ICU. Six of 8 HD patients required an increase in vasopressor because of a tendency toward hypotension and 4 of 8 patients suffered from atrial fibrillation during the initial HD on POD 1. Eight of 11 patients could be extubated on the first POD. No hospital death occurred. The use of normokalemic cardioplegic solution was useful to avoid post-operative hyperkalemia. Our perioperative dialysis programme successfully managed the perioperative clinical course of dialysed patients undergoing cardiac surgery.
7.Effects of electrical acupuncture on the autonomic nervous system function after local anesthesia to the acupuncture points.
Masaaki SHINOHARA ; Yuriko IMAOKA ; Norihiro YAMAUCHI ; Koichi KAMIMURA ; Akira TANAKA ; Toru SATO
Journal of the Japan Society of Acupuncture and Moxibustion 1988;38(4):403-408
This study was performed to clarify whether local anesthesia or sympathetic ganglion block abolishes the effects of electrical acupuncture (EA) on the autonomic nervous system or not.
Twelve healthy adult volunteers and 24 patients are divided into the following three experimental groups of each 12. EA was performed to the traditional acupuncture points on the meridians (H7; SHENMEN and CX4; HSIMEN). (1) In control group, only EA was performed. (2) In stellate ganglion block (SGB) group, EA was performed after unilateral SGB. (3) In local anesthesia (LA) group, EA was performed after local anesthesia on the same acupuncture points. The measured parameters on the autonomic nervous system functions were heart rates, R-R intervals in ECG, blood pressure and deep tissue temperature.
Results are as follows; Means of heart rate decreased significantly by EA in both control and SGB groups. Systolic blood pressure, diastolic blood pressure and RR-CV showed no significant changes by EA in all groups. Deep tissue temperature of the anterior forearm ipsilateral to the stimulation side decreased significantly by EA in SGB group. Deep tissure temperature of the anterior forearm contralateral to the stimuli decreased significantly by EA in both control and SGB groups. In LA group, however, all parameters were not changed by EA.
In summary, the effects of electrical acupuncture on the autonomic nervous system were not much different between control and SGB groups. It seems that one side of stellate ganglion block dose not interfere with the effects of acupuncture. On the other hand, any changes on the autonomic nervous system by electrical acupuncture were not observed in LA group. The fact showed that local anesthesia abolishes the effects of acupuncture on site. Local anesthesia blocks peripheral nerves and nerve endings. Therefore, we conclude that the effects of acupuncture on the autonomic nervous system are transmitted through the peripheral nerves, especially through the sensory nerves.
8.Relation between tongue mucosal findings and gastric mucosal lesion.
Naoto ISHIZAKI ; Syouhei KIYOFUJI ; Yoshiharu YAMAMURA ; Masato EGAWA ; Toru TANAKA ; Shunpei OGINO ; Kazutoshi SHIMOO ; Shizuo KAJIYAMA
Journal of the Japan Society of Acupuncture and Moxibustion 1990;40(3):299-305
We examined relation between mucosal findings of tongue and gastric mucosal lesion by comparison photographic findings of tongue with gastroendoscopic findings of stomach. Subjects of this study were 115 cases undergoing gastroendoscopic examination in our hospital. The state of tongue surface was evaluated by thickness and color of tongue coating and tongue fissure. Especially, the tongue area was divided into 9 sections in order to investigate distribution of coating and fissure. The cases showing thick coating at the lateral sections of tongue were significantly numerous in patients who had gastric ulcer, compared with the cases in those who had no gastric ulcer. From these results, it was suggested that inspection of tongue mucosa could become one of the useful examination of oriental medicine for gastrointestinal disease.
9.The effect of acupuncture stimulation to the bilateral quchi points on insulin secretion.
Shouhei KIYOFUJI ; Shizuo KAJIYAMA ; Masato EGAWA ; Naoto ISHIZAKI ; Toru TANAKA ; Shunpei OGINO ; Kazutoshi SHIMOO ; Yoshiharu YAMAMURA ; Yuichi KONDOU
Journal of the Japan Society of Acupuncture and Moxibustion 1990;40(3):292-298
We examined the effects of acupuncture stimulation (ACP-S) to the bilateral Quchi points (Q-P) on insulin secretion with or without electric stimulation (E-S) after an oral glucose load of 75g. This study was performed for 9 healthy volunteers classified into 5 group, a group of ACP-S to Q-P without E-S, a group of ACP-S to Q-P with E-S, a group of ACP-S to the bilateral points 1.5cm laterally apart from Q-P (P apart from Q) without E-S, a group of ACP-S to P apart from Q-P with E-S and a group of no ACP-S. Values of blood suger and serum insulin were determined before and 30min, 60min and 120min after an oral glucose administration. The value of serum insulin at 30min after oral glucose load and the total insulin values during the oral glucose tolerance test were significantly higher in a group of ACP-S to Q-P without E-S compared with those in the other group. These results suggested that acupuncture stimulation to Quchi points might increase insulin secretion.
10.A Suspected Case of Heyde Syndrome with Bleeding of the Small Intestine before Aortic Valve Replacement for Severe Aortic Valve Stenosis
Takanori Kono ; Toru Takaseya ; Yuichiro Hirata ; Kumiko Wada ; Takahiro Shojima ; Kazuyoshi Takagi ; Koji Akasu ; Koichi Arinaga ; Hidetoshi Akashi ; Hiroyuki Tanaka
Japanese Journal of Cardiovascular Surgery 2015;44(6):346-349
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.