2.Long-Term Results after Surgery for Abdominal Aortic Aneurysm.
Masahiko Ikebuchi ; Kengo Nishimura ; Maromi Tachibana ; Teruo Maeda ; Yasushi Kanaoka ; Shigetsugu Ohgi
Japanese Journal of Cardiovascular Surgery 2002;31(2):100-104
We evaluated long-term survival and morbidity of 191 patients (161 non-ruptured and 30 ruptured) undergoing abdominal aortic aneurysm repair between 1980 and 1997. Thirty-day mortality rates of non-ruptured and ruptured aneurysms were 1.2% and 36.6%, respectively. Hospital death occurred in 3.1% of patients with non-ruptured aneurysms and 53.3% of those with ruptured aneurysms. Cumulative survival rates after successful AAA repair at 5 and 10 years were 76.3% and 42.3%, respectively. These were lower than survival rates in the age- and gender-matched general population. The most frequent cause of late death was cardiac problems (28.8%) including myocardial infarction. Other causes included stroke (19.2%), malignant neoplasm (17.3%), and ruptured recurrent aneurysms at or above the proximal anastomosis (9.6%) including aorto-enteric fistulas. Regarding late vascular complications, recurrent aneurysms at or above the proximal anastomosis were found in 10% of patients, including 3.5% of true aneurysms, 4.7% of anastomotic aneurysms, and 1.8% of aorto-enteric fistulas. Thoracic aortic aneurysms were found in 3.7% and aortic dissection in 4.2%. Cumulative graft patency rates at 10 and 15 years were 97.4% and 90.9%, respectively. Suppressive treatment for arteriosclerosis and continuous careful follow-up with an aggressive diagnostic approach may reduce morbidity and mortality from recurrent aneurysms or coronary artery disease, thereby improving late survival after AAA surgery.
3.Multiple system atrophy in a patient with primary ciliary dyskinesia
Hideya Sakaguchi ; Satoshi Yamashita ; Tomohiro Suga ; En Kimura ; Yasushi Maeda ; Teruyuki Hirano ; Makoto Uchino
Neurology Asia 2013;18(1):103-105
We present the case of a patient with primary ciliary dyskinesia who later developed clinically probable
multiple system atrophy. Multiple system atrophy is a sporadic neurodegenerative disorder clinically
characterised by various combinations of parkinsonism, cerebellar ataxia, autonomic failure, and
pyramidal sign. Primary ciliary dyskinesia is a genetically heterogeneous disorder of motile cilia and
results in chronic bronchitis, bronchiectasis, chronic rhinosinusitis, chronic otitis media, situs inversus,
and male infertility. Most of the causative genes for primary ciliary dyskinesia encode proteins that
are part of the heavy or intermediate chain of axonemal dynein in ciliary outer dynein arms. We
hypothesised that axonemal dynein dysfunction in primary ciliary dyskinesia results in reduced autophagy,
accompanied by impaired cytoplasmic dynein function, which in turn accelerates -synucleinopathy in
multiple system atrophy. Furthermore, we contemplated a potential association between primary cilia
and neuronal function. Although it is not yet clear if a causal link between multiple system atrophy
and primary ciliary dyskinesia exists, further investigation into the relationship between axonemal
dynein dysfunction in primary ciliary dyskinesia and α-synucleinopathy should be conducted.
4.Acute Heart Failure due to Noncoronary Sinus of Valsalva Aneurysm with Rupture into the Right Atrium
Takaaki Samura ; Yasushi Tsutsumi ; Osamu Monta ; Satoshi Numata ; Sachiko Yamazaki ; Hisazumi Uenaka ; Takashi Shirakawa ; Syusaku Maeda ; Hirokazu Ohashi
Japanese Journal of Cardiovascular Surgery 2015;44(3):144-147
A 65-year-old woman was referred for progressive dyspnea and leg edema. Physical examination revealed a continuous murmur along the right sternal border. Enhanced computed tomography showed an aneurysm that extended to the right atrium. Aortic angiography confirmed the rupture of the valsalva aneurysm into the right atrium. The patient underwent emergency surgery to close the aneurysm ostium and suture closure of the right atrial fistula. The patient's postoperative course was uneventful.
5.Pulmonary artery banding in early infants with complete atrioventricular canal.
Yoshihiro OSHIMA ; Masahiro YAMAGUCHI ; Yuhei HOSOKAWA ; Hidetaka OHASHI ; Masanao IMAI ; Teruo TEI ; Tetsuro YAMAMOTO ; Yasushi NISHIKAWA ; Takuro TSUKUBE ; Hiromi MAEDA
Japanese Journal of Cardiovascular Surgery 1989;19(1):1-6
Infants with complete atrioventricular canal (CAVC) and severe congestive heart failure, not responding to medical managements, presents a difficult management problem. Between December, 1980, and August, 1987, 16 infants with CAVC presenting severe congestive heart failure underwent pulmonary artery banding. Average age at operation was 1.7 months (0.5 to 4) and average weight was 3.5kg (2.5∼4.9). Only four patients were older than 3 months of age at operation. Pre-operative cardiac catheterization and echocardiogram demonstrated that seven patients had mild to severe left atrioventricular valve regurgitation. Hospital death occurred in one patient (6%) due to rupture of the pulmonary artery. Of three late deaths, one patient had congestive heart failure, and one patient complicated with partial obstruction of right pulmonary artery died suddenly of an upper respiratory infection 11 months after rebanding. Survivors have been followed 18 to 94 months and all patients are growing at an increased rate postoperatively. In five patients of 12 long-term survivors who have undergone cardiac catheterization 37 to 83 months after the operation, pulmonary/systemic systolic pressure ratio (PP/PS) were 0.2∼0.42 (average 0.28). It is concluded that the pulmonary artery banding in infants with CAVC can be performed with low operative and late mortality and can provide good relief of symptoms and allow normal growth and development. It should be emphasized that early surgical palliation is mandatory to prevent the development of pulmonary hypertension and pulmonary emphysematous change.
6.Pharmacokinetics of low doses of colchicine in the leukocytes of Japanese healthy individuals
Akiko MUTOH ; Hitoshi UEHARA ; Asano MAEDA ; Akihiro TOKUSHIGE ; Yasushi HIGASHIUESATO ; Mika MAEDA ; Yuji KUMAGAI ; Shinichiro UEDA
Translational and Clinical Pharmacology 2023;31(4):217-225
The venerable drug colchicine has garnered significant recent attention due to its endorsement by the United States Food and Drug Administration as an anti-inflammatory medication for cardiovascular diseases. However, the administration of this drug at its minimal available dose of 0.5 mg has been associated with certain adverse reactions.Once colchicine is administered, the drug disappears from blood in a short time and distributes in the leukocytes for a certain period of time that elicits anti-inflammatory effect.Consequently, an in-depth comprehension of the pharmacokinetics of lower dosages within leukocytes assumes important for its broader application in routine clinical contexts. In this study, we present a comprehensive analysis of the pharmacological disposition of colchicine in the plasma, polymorphonuclear leukocytes, and mononuclear leukocytes among healthy Japanese male subjects, following both single and multiple oral administrations of 0.5 mg and 0.25 mg doses of colchicine. Our investigation reveals that colchicine persists within leukocyte populations even when administered at reduced dosages. The findings herein hold promise for mitigating the adverse effects associated with its use in the treatment of inflammatory cardiovascular disorders.
7.Current Status and Prospects of Community-based Medical Education: A Discussion Based on the Special Symposium "Evolution and Essence of the Community-based Medical Education through COVID-19 Pandemic"
Yasushi MATSUYAMA ; Kazuhiko KOTANI ; Takahiro MAEDA
Medical Education 2021;52(5):421-426
Community-based clinical clerkship, which involves travel outside the university or prefecture, was restricted or reduced due to the outbreak of the new coronavirus infection. What kind of shortage of learning this caused and how the shortage was compensated for were discussed in a special symposium at the 53rd Annual Meeting of the Japanese Society for Medical Education. As a result, two “essences” of community-based medical education emerged: 1) to recognize one’s role and responsibility in the future in the context of interprofessional practice, and 2) to look beyond the framework of medical institutions and view the whole scope of medicine with the patient at the center. It was concluded that online supplementary education should be utilized to enhance the value of practical training experience even in the post-Corona era. It was also supposed that this would lead to the “evolution” of community-based medical education itself.
8.Drastic Therapy for Listerial Brain Abscess Involving Combined Hyperbaric Oxygen Therapy and Antimicrobial Agents.
Keiichi NAKAHARA ; Satoshi YAMASHITA ; Katsumasa IDEO ; Seigo SHINDO ; Tomohiro SUGA ; Akihiko UEDA ; Shoji HONDA ; Tomoo HIRAHARA ; Masaki WATANABE ; Taro YAMASHITA ; Yasushi MAEDA ; Yasuhiro YONEMOCHI ; Tomohiro TAKITA ; Yukio ANDO
Journal of Clinical Neurology 2014;10(4):358-362
BACKGROUND: Listeria monocytogenes (L. monocytogenes) is a rare causative pathogen of brain abscess that is often found in immunocompromised patients. Although patients with supratentorial listerial abscesses showed a longer survival with surgical drainage, the standard therapy for patients with subtentorial lesions has not been established. CASE REPORT: We report herein a patient with supra- and subtentorial brain abscesses caused by L. monocytogenes infection. These abscesses did not respond to antibiotics, and his symptoms gradually worsened. Drainage was not indicated for subtentorial lesions, and the patient was additionally treated with hyperbaric oxygen therapy, which dramatically reduced the volume of abscesses and improved the symptoms. CONCLUSIONS: This is the first report of drastic therapy for a patient with listerial brain abscesses involving combined antibiotics and hyperbaric oxygen therapy. The findings suggest that hyperbaric oxygen therapy is a good option for treating patients with deep-seated listerial abscesses and for who surgical drainage is not indicated.
Abscess
;
Anti-Bacterial Agents
;
Anti-Infective Agents*
;
Brain Abscess*
;
Drainage
;
Humans
;
Hyperbaric Oxygenation*
;
Immunocompromised Host
;
Listeria monocytogenes
9.The Relation between Bathing Habits, Cognitive Impairment, and Depressive State in Patients with Alzheimer Disease
Yasushi IWASAKI ; Akira DEGUCHI ; Eri SUZUMURA ; Kazunori MAEDA ; Hiroya SHIMASAKI ; Noriyuki TANAKA ; Yasunori MORI ; Chihiro MIWA ; Hitoshi HAMAGUCHI ; Yoichi KAWAMURA
The Journal of The Japanese Society of Balneology, Climatology and Physical Medicine 2012;75(3):186-194
Because bathing frequency decrease as Alzheimer disease (AD) worsens, we investigated the relation between cognitive disfunction and bathing frequency. We asked AD patients and their caregivers about the number of times the patient bathed per week before onset of dementia and the time of first clinical consultation. We investigated the relation between scores from a cognitive function test (Hasegawa’s Dementia Scale-Revised [HDS-R], the Mini Mental State Examination [MMSE] and Wechsler Adult Intelligence Scale-Revised [WAIS-R]), and a depression assessment (Zung Self-rating Depression Scale [SDS]) and number of baths taken per week. Before onset of dementia, the average number of baths taken by 89 AD patients (26 men, 63 women; range: 63-90 years, average: 79.8 years), was 6.6 times/week. At evaluation time, this number had decreased significantly to 5.3 times/week (p<0.001). A significant positive correlation was found between perfomance Intelligence Quotient (IQ) and total IQ of the WAIS-R and number of baths (p<0.001, p<0.01, respectively). No significant correlation coefficient was found between HDS-R, MMSE, verbal IQ of the WAIS-R and the SDS and number of baths. Reasons of the patients gave for less frequent bathing were that bathing was troublesome or was forgotten and that thermoregulation of bath water had become impossible. The results suggested that in AD patients, number of baths taken decreased with aggravation of cognitive dysfunction and that there were multiple participating factors including memory disturbance, depressive state, and, particularly, executive dysfunction.
10.Hygienic Chemical Examination of Bath Water Quality Change in Hot Spring Utilizing Hospital—Presumption of bath water quality changing factors by aeration and aging of hot spring—
Yasunori MORI ; Akira DEGUCHI ; Chihiro MIWA ; Yasushi IWASAKI ; Eri SUZUMURA ; Kazunori MAEDA ; Hitoshi HAMAGUCHI ; Hiroya SHIMASAKI ; Noriyuki TANAKA ; Yoichi KAWAMURA
The Journal of The Japanese Society of Balneology, Climatology and Physical Medicine 2012;75(3):195-203
The purposes of this study were to analyze the chemical composition of some bath water in a simple alkaline hot spring utilizing a hospital and clarifying the factors that influence the concentration of each component of the hot spring water accompanying the bathing. Water samples were collected in plastic bottles from some bath water and transported to the laboratory. The pH value, electrical conductivity, cations (sodium, potassium, magnesium and calcium ions), anions (fluorine, chlorine, nitrite, nitrate and sulfate ions) and metasilicic and metaboric acids were measured. To investigate the factors that increase concentrations of each component in bathing water, aeration examinations with air or nitrogen gas were continued for one month. The concentrations of sulfate and nitrate ions in the bath water showed an increased tendency compared to those of the hot spring water just after welling up. After aeration with air, the concentration of sulfate ions became higher than that with nitrogen gas. On the contrary, an increase in the concentration of nitrate ions was not found in water aerated with air or nitrogen gas. In conclusion, the oxidation of sulfur in the hot spring water may have caused the density change of the sulfate ions in the bath water. As for the nitrate ions, the increase in the concentration in the bath water seems to have been caused by perspiration during bathing, but not by oxidation for nitrogen in the hot spring water.