Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Tomoko Yamazaki is active.

Publication


Featured researches published by Tomoko Yamazaki.


General Hospital Psychiatry | 2003

Incidence and clinical course of major depression in patients with chronic hepatitis type C undergoing interferon-alpha therapy: a prospective study.

Naoshi Horikawa; Tomoko Yamazaki; Namiki Izumi; Masakatsu Uchihara

This study examined the incidence, clinical course and its risk factors for major depression in patients with chronic hepatitis type C undergoing interferon-alpha therapy. Ninety-nine subjects underwent the psychiatric interviews for diagnosis of major depressive episode according to the DSM-IV criteria before the start of interferon therapy, and once every 4 weeks during both the 24-week treatment period and 12 weeks after the end of therapy. Depressive symptoms were also evaluated using the Hamilton Rating Scale for Depression. Major depression occurred during interferon therapy in 23 patients (23.2%). In 73.9% of them depression occurred within 8 weeks after the start of therapy. Twenty-two patients with depression completed the therapy and 59.1% of them achieved remission by the end of therapy with a mean duration of 11.6 weeks. Although the other 40.9% were not in remission at the end of therapy, they achieved remission within 12 weeks thereafter. The only risk factor for depression was advanced age. Depression occurs frequently among patients with hepatitis type C undergoing interferon-alpha therapy. Such patients require careful observation, and psychiatrists should be sufficiently aware of this significant psychiatric complication of interferon therapy.


General Hospital Psychiatry | 2003

Treatment for delirium with risperidone: results of a prospective open trial with 10 patients

Naoshi Horikawa; Tomoko Yamazaki; Kazuko Miyamoto; Akiko Kurosawa; Hiroaki Oiso; Fumi Matsumoto; Katsuji Nishimura; Kumiko Karasawa; Kiyoshi Takamatsu

Delirium is a common psychiatric illness among medically compromised patients. There is an increasing opportunity to use atypical antipsychotics to treat delirium. The effects of these drugs on delirium, however, the most appropriate way to use them, and the associated adverse effects remain unclear. To clarify these points, a prospective open trial on risperidone was carried out in 10 patients with delirium. At a low dose of 1.7 mg/d, on average, risperidone was effective in 80% of patients, and the effect appeared within a few days. There were no serious adverse effects. However, sleepiness (30%) and mild drug-induced parkinsonism (10%) were observed; the symptom of sleepiness was a reason for not increasing the dose. One patient responded to a dose as low as 0.5 mg/d, so it is recommended that treatment start at a low dose, which may then be increased gradually. This trial is a preliminary open study with a small sample size, and further controlled studies will be necessary.


General Hospital Psychiatry | 2000

Changes in disclosure of information to cancer patients in a general hospital in Japan

Naoshi Horikawa; Tomoko Yamazaki; Masao Sagawa; Toshihiko Nagata

The disclosure of information to cancer patients is one of the most important issues in oncological practice. In Japan, as in some other countries, few cancer patients were ever given a truthful statement of their diagnosis. However, today more and more patients are being informed of their diagnosis and prognosis. This study investigates the nature of these changes in disclosure policy and suggests possible explanations. We reviewed the medical and nursing charts of 122 adult cancer patients admitted to our hospital in 1993 and 137 admitted in 1998. We examined the information they had been given, and their sociodemographic and medical characteristics. The diagnosis of cancer was shared with 27% of patients in 1993. In 1998, however, 71% were informed of their cancer, and 10% were also told they had a poor prognosis. The rate of disclosure was lower for older patients and those with advanced cancer in both 1993 and 1998. In 1998 the rate was higher in patients undergoing chemotherapy and/or surgery. The higher level of disclosure in 1998 was due basically to the growing importance of informed consent. Psychiatric referrals increased from 2% in 1993 to 10% in 1998. Psychiatrists may have contributed to these changes in the disclosure of information.


General Hospital Psychiatry | 1999

The disclosure of information to cancer patients and its relationship to their mental state in a consultation-liaison psychiatry setting in Japan.

Naoshi Horikawa; Tomoko Yamazaki; Masao Sagawa; Toshihiko Nagata

In Japan, as in some other countries, not all cancer patients are informed of their diagnosis and expected prognosis. However, we do not know enough about the relationship between the kind of information given to cancer patients and their mental state. The following is a study that examines this relationship. The subjects were 81 adult cancer inpatients referred to psychiatrists. Those with mental disorders before admission or with delirium were excluded. The subjects were classified into three groups according to the kind of information given to them: 28 were not informed of a diagnosis of cancer, 36 were informed of a diagnosis of cancer, and 17 were informed of both a diagnosis of cancer and a poor prognosis. The distributions of DSM-IV Axis I diagnoses were nearly equal among the three groups of patients. In each group, more than 90% of patients were diagnosed as having either major depressive disorder or adjustment disorders. In the results of HAM-D, HAM-A, and a question about irritability, the mean total HAM-A scores and mean scores for the factors of Suicide, Behavior at Interview, and Irritability, differed significantly among the three groups. They were highest in patients who were not informed of a diagnosis of cancer. The authors discuss the nature of relationship between the disclosure of information and the mental state in cancer patients.


Diabetes Research and Clinical Practice | 1998

Perception and utilization of social support in diabetic control

Isao Fukunishi; Naoshi Horikawa; Tomoko Yamazaki; Kaya Shirasaka; Kazuo Kanno; Michiko Akimoto

This study examined the influence of social support (perception and utilization) on diabetic control. Subjects were 178 patients with diabetes mellitus [insulin dependent diabetes mellitus (IDDM) = 26, non-insulin dependent diabetes mellitus (NIDDM)= 152]. HbA1c values was used as an indicator of diabetic control. Assessment of social support was performed using the Stress and Coping Inventory. HbA1c values were significantly related to the presence or absence of participation in a diabetic education program as well as scores on perception and utilization of social supports. The participation in the diabetic education program was not significantly associated with the two social supports, however, the two social support factors interacted significantly with one another. As for type of DM, these findings were stronger in IDDM patients. These results suggest that, in particular patients with NIDDM, although diabetes education is effective for decreasing HbA1c, a combination of the two social supports also decrease the HbA1c value, independent of diabetic education.


Journal of Psychosomatic Research | 1998

Stress coping and social support in glucose tolerance abnormality

Isao Fukunishi; Michiko Akimoto; Naoshi Horikawa; Kaya Shirasaka; Tomoko Yamazaki

We examined coping with stress, including social support, dealing with illness, and mood states, in a sample of 600 persons who underwent primary health-care screening. Subjects were not yet diagnosed as having glucose tolerance abnormality and considered themselves healthy before the examination. Although no significant differences on the existence and perception of social support were found, the utilization of social support was significantly and negatively correlated with the level of glucose tolerance abnormality. The results suggest that poor utilization of social support is associated with the onset of glucose tolerance abnormality.


Psychological Reports | 2001

Content Analysis of Group Work Sessions in the Context of an Educational Program for Inpatient Diabetes Patients

Michiko Akimoto; Isao Fukunishi; Yoshie Shinoe; Chieko Yamaguchi; Atsuko Yano; Yukiko Kawasaki; Tsuneko Oyamada; Shigeko Hirozane; Kazuo Kanno; Tomoko Yamazaki; Naoshi Horikawa

This study investigated the changes in emotions and attitudes of diabetic patients as observed in group work sessions linked to an inpatient diabetic educational program. Using content analysis of transcripts from Sessions 1 and 3 of 8 selected groups (40 patients), in Session 1 negative emotions or attitudes such as anxiety, remorse, or self-blame, a lack of understanding of diabetes, along with a willingness to undertake self-care were frequently expressed. In Session 3, more positive emotions and attitudes towards self-care (willingness, specific plans, and resolutions), satisfaction, and relief or hope were frequently expressed. These results suggest that the patients participating in the group work sessions moved toward adaptation to diabetes, although the effects of the group work were not separated from those of the inpatient educational program.


Psychosomatics | 2004

Psychosocial Predictors of Relapse Among Diabetes Patients: A 2-Year Follow-Up After Inpatient Diabetes Education

Michiko Akimoto; Isao Fukunishi; Kazuo Kanno; Yasukazu Oogai; Naoshi Horikawa; Tomoko Yamazaki; Yuri Morokuma


General Hospital Psychiatry | 1999

A case of akathisia during interferon-alpha therapy for chronic hepatitis type C.

Naoshi Horikawa; Tomoko Yamazaki; Masao Sagawa; Toshihiko Nagata


Journal of Psychosomatic Research | 2003

Psychosocial predictors of “relapse” of diabetes patients a two-years' follow-up after an inpatient diabetes education

Michiko Akimoto; K Kanno; Y Oogai; Naoshi Horikawa; Tomoko Yamazaki; M Kudo; Y Morokuma; Isao Fukunishi

Collaboration


Dive into the Tomoko Yamazaki's collaboration.

Top Co-Authors

Avatar

Naoshi Horikawa

Saitama Medical University

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Kumiko Karasawa

National Institute of Radiological Sciences

View shared research outputs
Top Co-Authors

Avatar

Masakatsu Uchihara

Tokyo Medical and Dental University

View shared research outputs
Top Co-Authors

Avatar

Namiki Izumi

Tokyo Medical and Dental University

View shared research outputs
Researchain Logo
Decentralizing Knowledge