1.Valve Replacement in Hemodialysis Patients in Japan
Masakazu Aoki ; Yoshiyuki Nishimura ; Hiroshi Baba ; Masanori Hashimoto ; Yasuhide Ohkawa ; Yoshitaka Kumada
Japanese Journal of Cardiovascular Surgery 2007;36(1):1-7
A retrospective review was performed on 43 patients on hemodialysis undergoing valve surgery between May 1999 and August 2004. Ages ranged from 36 to 80 years (mean, 63.8 years). Twenty aortic, 9 mitral, 8 aortic and mitral and 6 valvuloplasties were performed. Twenty-three aortic mechanical valves, 5 aortic bioprosthetic valves, 13 mitral mechanical valves and 4 mitral bioprosthetic valves were implanted. Twenty-five of the 28 aortic valve replacement were hypoplasia of the aortic valve ring. There were 3 hospital deaths (heart failure, pneumonia and sepsis). There were 10 late deaths (2 heart failure, 2 pneumonia, wound infection, cerebral infarction, 2 cancer, arteriosclerosis obliterans and unknown death). Survival at 1, 3 and 5 years was 81%, 74% and 47%. There were three documented major bleedings or thromboembolisms in the 29 patients with mechanical valves (10%) and none in the 9 patients with bioprosthetic valves (0% no significance). Three reoperations were performed for premature degeneration of bioprosthetic valve (19, 24 and 50 months) due to accelerated calcification. These results demonstrate that the prosthetic valve-related major bleedings and strokes in hemodialysis patients are similar for both mechanical and bioprosthetic valves, and that bioprosthetic valves will undergo premature degeneration. Therefore, preference should be given to mechanical valve prostheses in hemodialysis patients.
2.Surgical Repair of Dissecting Aortic Aneurysms(DeBakey IIIb) Presenting with Visceral Perfusion from the False Lumen.
Shigeyuki Fuwa ; Hajime Hirose ; Masanori Hashimoto ; Hisashi Iwata ; Kiyokage Kubo ; Makoto Ishikawa ; Hironori Arakawa ; Kenichiro Azuma ; Koji Matsumoto
Japanese Journal of Cardiovascular Surgery 1995;24(5):281-285
We reviewed our experience with 4 cases of chronic dissecting aortic aneurysm (DeBakey IIIb) with the false lumen extending into the abdominal aorta and major branches being perfused from the false lumen. In such cases, resection of the intrathoracic portion of the aneurysm and closing of the distral false lumen may exclude visceral perfusion from the false lumen. In order to ensure continued perfusion of true and false lumens after repair, we performed “double barrel” anastomosis for distal anastomosis in graft replacement of the descending aorta. Follow-up periods ranged from 8 to 21 months, 17 months on average. Postoperatively, neither apparent expansion of the false lumen nor compression of the true lumen was found in these cases. The advantage of this procedure is the effective restoration of visceral perfusion. We emphasize that this procedure is one of the choices of procedures, as a two-staged approach for chronic aortic dissection presenting with visceral perfusion from the false lumen and without an enlarged abdominal aorta, though more patients and longer follow-up are required to fully evaluate this procedure.
3.Detection of SYT-SSX fusion transcripts in paraffin-embedded tissues of synovial sarcoma by reverse transcription-polymerase chain reaction.
Yongkun WEI ; Jian WANG ; Xiongzeng ZHU ; Daren SHI ; Masanori HISAOKA ; Hiroshi HASHIMOTO
Chinese Medical Journal 2002;115(7):1043-1047
OBJECTIVETo assess the feasibility of detecting SYT-SSX fusion transcripts in paraffin-embedded tissues of synovial sarcoma by reverse transcription-polymerase chain reaction (RT-PCR).
METHODSRT-PCR was used to amplify the SYT-SSX fusion transcripts using archival formalin-fixed paraffin-embedded tumor specimens from a series of 37 synovial sarcoma cases. To investigate the specificity of the SYT-SSX fusion transcripts, a variety of non-synovial sarcoma tumors were included in the study as negative controls. The detected messages derived from fusion genes were confirmed by subsequent sequence analysis.
RESULTSSYT-SSX fusion transcripts were detected in 33 of 37 (89.2%) synovial sarcomas. None of the 34 cases of non-synovial sarcoma tumors showed amplified products of SYT-SSX fusion transcripts, although PBGD mRNA was detected in all specimens. Among 33 SYT-SSX-positive synovial sarcomas, 22 tumors had an SYT-SSX 1 fusion transcript, whereas 6 tumors had an SYT-SSX2 fusion transcript. Fusion types can not be distinguished in the remaining 5 cases. There was a significant relationship between SYT-SSX fusion type and histologic subtype. All 10 biphasic synovial sarcomas had the SYT-SSX1 fusion, whereas all tumors with SYT-SSX2 were of monophasic morphology (P < 0.05).
CONCLUSIONSRT-PCR can be applied to archival formalin-fixed paraffin-embedded tumor tissues as a sensitive and reliable technique for the diagnosis and differential diagnosis of synovial sarcoma. There is an association between SYT-SSX fusion type and histological subtype. SYT-SSX2 fusion transcripts can only be found in monophasic synovial sarcoma.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Female ; Humans ; Male ; Middle Aged ; Oncogene Proteins, Fusion ; genetics ; Paraffin Embedding ; RNA, Messenger ; analysis ; Reverse Transcriptase Polymerase Chain Reaction ; Sarcoma, Synovial ; genetics ; pathology
4.Surveillance of Usage of Drugs Corresponding to Doping, and Construction of Management System for Anti-doping
Naohiro Maeda ; Mariko Isaji ; Kanako Naoe ; Rika Yotufuji ; Yukihiro Ozaki ; Tetsurou Hashimoto ; Michi Iriyama ; Kouji Matsubara ; Mizue Shimozawa ; Kimiko Oda ; Norio Sakuta ; Masanori Niioka ; Michiya Kobayashi
Japanese Journal of Drug Informatics 2013;14(4):179-183
Objective: Doping is strongly prohibited in sports. Sports pharmacist was born in 2010 in Japan, and the anti-doping activity is expected. On the other hand, doping by arising from a lack of knowledge about prohibited substances in athletes, so-called “unwilling doping” is developing into a social issue. In this study, we investigated the percentage of prohibited substances in all drugs and prescriptions in a general hospital, to collect information to prevent an unwilling doping.
Methods: We constructed system to extract the drugs corresponding to prohibited substances in the prescription order entry system in Otaru Municipal Hospital, and we analyzed 3,306 prescriptions of 10 to 59 years old patients, from July to September 2010.
Results: Thirteen point five percent of our hospital drugs met definition of the prohibited substance. The number of prescriptions including prohibited substance(s) was 350 (10.6%), and its category was different from each age-group and clinical department.
Consideration: Because prohibited substances are included in approximately 10% of prescriptions, athletes are exposed to danger of becoming an unwilling doping. Pharmacist should be well informed about prohibited substances to prevent athletes from unwilling doping. And they should provide information promptly and adequately for athletes.
5.The Effects of Carvedilol, a Vasodilating β-adrenoceptor Blocker, on the Quality of Life in Hypertensive Patients
Hiromi HASHIMOTO ; Tadashi OYAKE ; Toshio IKEDA ; Tomoko GOMI ; Masanori YOSHIDA ; Tetsuo FUJIMOTO ; Mitsuo UMEZU ; Kiichi NAGASHIMA ; Toshiharu FUJITA ; Michiko HORI ; Masayo TANAKA ; Makiko FUJII ; Mitsuo MATSUMOTO ; Yoshiaki MATSUMOTO ; Masamichi FUKUOKA ; Masao ISHI
Japanese Journal of Pharmacoepidemiology 1999;4(2):133-148
Objective : Carvedilol is a non-selective β blocker with an α blocking activity. Since this drug is highly fat-soluble, it can pass through the blood-brain barrier, and thus may induce depression and lower QOL. In the present study, physicians and pharmacists collaborated to evaluate the antihypertension effect of carvedilol and post-administration changes in QOL. Furthermore, the relationship between QOL and antihypertension effect was analyzed.
Design : Self-controlled study.
Patients and Methods : Subjects were outpatients with hypertension above the age of 70 years who visited one of 42 medical institutions in Japan between April 1995 and March 1996. A total of 243 patients were registered, and 10-20 mg of carvedilol was administered once a day for six months. Pharmacists assessed the QOL of these patients by asking 82 questions on three separate occasions : before administration and one and six months after administration. The antihypertensive effect of this drug was investigated in patients in whom all three QOL questionnaires were collected. The main test items were antihypertensive effect, changes in QOL (subjective QOL with a special emphasis on patient psychology), and the relationship between antihypertensive effect and QOL. The antihypertensive effect of this drug was statistically analyzed by a paired t-test, and changes in QOL were statistically analyzed using generalized estimating equations.
Results : All three QOL questionnaires were collected from a total of 146 patients. Their pre-administration systolic blood pressure was 159.6±1.4 mmHg, and diastolic blood pressure 94.0±0.9 mmHg, and their blood pressure decreased significantly one month after the start of administration. This antihypertensive effect of carvedilol persisted, and the systolic and diastolic blood pressure of these patients six months after the start of administration was 141.1±1.2 and 85.2±0.7 mmHg, respectively (significant decreases when compared to pre-administration levels ; both p<0.05).
Subjective QOL improved significantly after carvedilol administration. And, changes were not seen in sexual function. Changes in the five categories of subjective QOL were as follows : psychological stability, disease-induced inconvenience, and independence improved significantly after carvedilol administration, but changes were not seen in gratification or vitality. However, improvements in subjective QOL did not correlate with improvements in blood pressure.
Conclusions : The results of the present study showed that carvedilol improved QOL without negatively affecting sexual function. Subjective QOL reflects the psychological well-being of patients. In the present study, psychological stability, disease-induced inconvenience, and independence improved significantly, but changes were not seen in gratification or vitality. Since β blockers can suppress the central nervous system, they can reduce psychological stability, gratification and vitality. Even though carvedilol is highly fat-soluble, the results of non-clinical studies have shown that it does not suppress the central nervous system as much as propranolol. The results of the present study showed that carvedilol does not strongly suppress the central nervous system of humans. Moreover, significant changes in QOL were not seen between one and six months after the start of administration of carvedilol, suggesting that it is possible to estimate the QOL of patients on antihypertensive therapy after six months of administration by assessing their QOL one month after administration.
6.Current State of Home Palliative Care and Factors Influencing Death at Home for Terminally Ill Cancer Patients Living in Single-person Households
Kotaro HASHIMOTO ; Kazuki SATO ; Masanori KAWAHARA ; Masao SUZUKI
Palliative Care Research 2018;13(1):39-48
Purpose: This study investigated the current state of medical care and palliative care provided at home and the factors influencing death at home for terminally ill cancer patients living in single-person households. Methods: We conducted a retrospective questionnaire study of 1032 cancer patients living in single-person households who received home palliative care from 17 specialized home care clinics and finished home care between June and November 2013. We compared patient background factors, outcomes, home care services, and medical care between these patients and others not living in single-person households to investigate factors influencing death at home. Results: Compared with patients not living in single-person households, the patients living in single-person households were older, had a better performance status at initiation of home palliative care, showed a lower preference for dying at home, and received more frequent social hospitalization. Among the subjects from single-person households, factors influencing death at home were a family preference for dying at home (odds ratio (OR)=14.0), poor performance status at initiation of home palliative care (OR=4.0), and no hospitalization during home palliative care (OR=16.6). Conclusion: We found that death at home for terminally ill cancer patients living in single-person households and receiving home medical care and palliative care was influenced by family preference, the performance status at initiation of home palliative care, and hospitalization during home palliative care.
7.Comparison of Home Palliative Care for Elderly Patients with Cancer between Age Groups : A Multicenter Study
Hiroaki TAKABAYASHI ; Masanori KAWAHARA ; Kotaro HASHIMOTO ; Kazuki SATO ; Masao SUZUKI
Palliative Care Research 2018;13(2):129-138
Purpose: This study was performed to compare the characteristics of home palliative care for elderly patients with cancer between age groups. Methods: The clinical records of 1,032 patients with cancer who received home medical care from June to November 2013 were reviewed retrospectively. Patients were classified as non-elderly (<65 years old), young-old (65-74 years), old-old (75-84 years), or oldest-old (≥85 years), and these groups were compared with respect to demographic characteristics, patient/family problems, outcomes, and medical care and services provided. Results: There was a higher percentage of patients with no caregiver in the oldest-old group than in the other groups (18%, p=0.014), while the young-old and oldest-old groups had a higher percentage of problems related to caregiving such as caregiver burden or absence of a caregiver (32% and 33%, p=0.002, respectively). In addition, the percentage of patients who required visiting nurses and care was higher in the old-old group (86% and 30%, respectively) and oldest-old group (89% and 35%, respectively) compared with the other two groups. Conclusion: Problems related to caregiving, such as caregiver burden or absence of a caregiver, were greater in the old-old and oldest-old groups, and a higher percentage of patients required visiting nurses and care in those two groups.
8.Current Use of Sedatives for Terminal Cancer Patients near Death Receiving Home Palliative Care, and Influence on Home Care Period
Kotaro HASHIMOTO ; Kazuki SATO ; Mitsuharu SASAKI ; Hiroaki TAKABAYASHI ; Masanori KAWAHARA ; Masao SUZUKI
Palliative Care Research 2019;14(3):187-192
Objective: This study investigated the association between use of sedatives in terminal cancer patients near death who were receiving home care and the home care period. Methods: We conducted a retrospective review of the medical records for 1032 cancer patients who received home palliative care from 17 specialized home care clinics between June and November 2013. We checked the use of sedatives within 48 hours before death at home, and we compared the home care period between patients with and without sedation. Results: The sedatives used were diazepam (n, %: 100, 52%), flunitrazepam (29, 15%), bromazepam (27, 14%), midazolam (26, 13%), and phenobarbital (20, 10%). The median home care period (median [quartiles]) was 26 [13, 63] days and 25 [10, 64] days (Adj p=0.79) for the patients with and without sedatives, respectively. Conclusion: Among terminal cancer patients near death receiving home care, 24% were administered sedatives, with more than half of those patients receiving diazepam. There was no association between use of sedatives and the home care period.
9.Survey of the Period of Tapering of a Strong Opioid Analgesic for Oral Mucositis Resulting from Concomitant Chemoradiotherapy for Head and Neck Cancer after the End of Treatment
Takehiko TSUNO ; Jumpei TOKUMARU ; Masanori KOJIMA ; Yousuke KITANI ; Shinya HASHIMOTO
Palliative Care Research 2018;13(4):305-311
Severe pain from mucositis resulting from concomitant chemoradiotherapy (CCRT) is commonly treated with opioid analgesics. However, the period of use of opioid analgesics differs among individuals. We performed a retrospective cohort study of 46 patients who were treated with long-term opioid analgesics after CCRT for head and neck cancer. Among these patients, opioid analgesics were used for a median of 30 days. A comparative study was conducted between patients with long-term use of strong opioid analgesic drugs and those with short-term use. A significantly prolonged use of opioid analgesic agent was associated with cetuximab use (TPF vs. S-1 vs. Cmab, 35.0 vs. 44.1 vs. 180.7, p≤0.001). There were no psychiatric symptoms such as dependence and delirium. When patient background and chemotherapy selection are known, the possibility of severe oropharyngeal mucositis and the potential need for long-term opioid analgesics can be evaluated. Consideration of reduction or discontinuation according to pain after the end of treatment is important.