Biomedical subjects

P Assantachai

Publications and source records attributed to P Assantachai.

7 recordsLinked to original sources

PubMed2006

Body composition: gender-specific risk factor of reduced quantitative ultrasound measures in older people.

INTRODUCTION: Body composition has been reported as a significant determinant of bone mineral density. However, data regarding the relationship between the body composition and quantitative ultrasound (QUS) are scarce. METHODS: This cross-sectional study examined risk factors of reduced QUS measures in older men and women. A total of 699 subjects aged 60 years old and over-458 women and 241 men-who lived in rural communities of Thailand were randomly recruited. RESULTS: By using broadband ultrasound attenuation at the cutoff point of mean -1.0 SD based on young Thai people, the independent factors associated with reduced QUS measures in men were: poor activity of daily living, older age, and low fat mass. As for older women, the independent factors were the number of years since menopause, lack of regular exercise, lower height, and low fat mass. When using the stiffness index at the cutoff point of mean -1.6 SD based on young Thai people, the independent factors associated with reduced QUS measures in men were older age and low fat mass. Meanwhile, the number of years since menopause and low lean body mass were independent risk factors in women. CONCLUSIONS: Poor activity of daily living in men or lack of regular exercise in women was found to be a modifiable risk factor of reduced QUS measures. Years since menopause and low lean body mass were significant factors determining reduced QUS measures in women. Fat mass was an independent factor associated with reduced QUS measures both in men and women.

Activities of Daily Living↗

PubMed2006

Risk factors of osteoporosis in institutionalized older Thai people.

INTRODUCTION: There are very few published studies on osteoporosis among the institutionalized elderly in Asian countries, where the incidence of osteoporosis is increasing rapidly. Our objectives were to determine both the prevalence and risk factors of osteoporosis, as assessed by calcaneal bone mineral density (BMD) measurements, in a Thai nursing home. METHODS: Activities of daily living, the Mini-Mental State Examination, blood chemistry, body composition analysis, calcaneal quantitative ultrasound (QUS) and serum C-terminal telopeptides of type I collagen (serum beta-CTx) were assessed in 108 older people living in the largest nursing home for the elderly in Bangkok. Calcaneal BMD was measured by dual-energy X-ray absorptiometry (DXA). RESULTS: The prevalence of osteoporosis, as defined by a calcaneal BMD T-score <1.6, was 79.6%. The prevalence of low bone mass, as defined by a T-score of broadband ultrasound attenuation <1.0, was 80.6%. The prevalence of osteoporosis detected by these two methods was not significantly different (p=1.00). The prevalence of increased bone turnover [with the cutoff point being the mean + 2 standard deviation (SD) of the serum beta-CTx level of a sex- and age-matched control group] was 13.9%. In multiple linear regression analysis, five risk factors -- serum beta-CTx, mental health, mobility index, height and lean body mass -- were able to predict calcaneal BMD at a coefficient of determination R(2)) of 0.54. CONCLUSIONS: These results indicate the importance of mental health and self-care ability as factors associated with osteoporosis. Increased bone turnover was also a significant risk factor of low bone mass. Calcaneal QUS was a useful screening tool for diagnosing osteoporosis in this population and was comparable to calcaneal DXA.

Aged↗

PubMed2000

Prevalence of dyslipidemia in the elderly in rural areas of Thailand.

Dyslipidemia is highly prevalent in the urban areas of Thailand but information in the rural area, particularly in the elderly, is limited. The objective of this study was to determine the prevalence of dyslipidemia in the elderly who live in the rural areas of Thailand. Random sampling of the volunteers aged > or = 60 years in 3 districts of Samut Songkhram and Ratchaburi provinces was done. After 12-hour fast, the blood sampling was drawn for the analysis of total cholesterol, triglycerides, high-density lipoprotein (HDL) cholesterol and low-density lipoprotein (LDL) cholesterol. Eighty men and 123 women, aged 60-87 years old, were included in the study. Mean serum lipid levels of cholesterol, LDL cholesterol, HDL cholesterol and triglycerides were 261.74+/-47.58, 180.35+/-45.06, 43.72+/-12.06, and 188.38+/-103.84 mg/dl respectively. Women had significantly higher body mass index, cholesterol and LDL cholesterol levels than men. Seventy percent of them had cholesterol > or = 240 mg/dl and LDL cholesterol > or = 160 mg/dl. Twenty-five percent had HDL cholesterol < or = 35 mg/dl. However, LDL/HDL cholesterol ratio > 5 which indicated high risk for coronary heart disease were found in only 34%. In conclusion, prevalence of dyslipidemia was very high in Thai rural elderly. Further surveillance in this population is essential in verifying the impact of dyslipidemia as a risk of cardiovascular disease in Thai elderly people.

Aged↗

PubMed1998

Hypertension in the elderly: a community study.

Hypertension in the elderly features differently from its younger counterpart in terms of diagnosis, associated condition, atypical manifestation, management and complication. Epidemiological study in this increasing age group in the community is, therefore, needed. 334 elderly subjects living in various parts of Bangkok were randomly recruited by appointment at 7 geriatric day centers situated in local health offices of Bangkok Metropolitan Authority. Each subject received blood tests before being interviewed and measured by digital sphygmomanometer. Blood pressure and heart rate changes were recorded during lying, sitting and standing. The prevalence of hypertension was 36.5 per cent, 33.2 per cent were already aware of its existence while 3.3 per cent were newly detected by the survey. Isolated systolic hypertension, a unique subtype found in the elderly, was 4.5 per cent of all or 37.5 per cent among the hypertensive group. The associated medical conditions among the case group were diabetes mellitus 22.9 per cent, hyperlipidemia 13.9 per cent, hyperuricemia 33.3 per cent and heart disease 18.0 per cent. As far as postural hypotension is concerned, 14.8 per cent of case group whereas 11.3 per cent of the control group were affected. On the other hand, the symptom of postural dizziness was found to be 31.1 per cent and 55.2 per cent in the case and control group respectively. Following the statistical logistic regression analysis, the independent associated factors in the hypertension group were: history of hyperlipidemia, increased serum uric acid and poor heart rate response after standing. These findings, as parts of the multiple pathology and potential complications prevalent among this group, should be of concern by any physician looking after the elderly.

Aged↗

PubMed1997

Relationships of vitamin B1, B12, folate and the cognitive ability of the Thai rural elderly.

The comparisons of the levels of vitamin B1, B12 and folate between the elderly with good and poor cognitive ability are the goals of this study. 203 subjects enrolled in 3 geriatric centers of Ratchaburi province and nearby were recruited. All the subjects were tested with structured Thai Mini Mental State Examination (TMSE) questionnaire by trained examiners. With the cut off point of 23 out of 30 in TMSE, 31 per cent were designated as poor cognitive group. Radiodilution assay was used to determine the level of serum B12 and red cell folate while the TPP effect was processed by spectrophotometry. The prevalence of vitamin B1, B12 and folate deficiency were 30.2 per cent, 3.8 per cent and 8.2 per cent consecutively. None of the studied vitamin levels was shown to be significantly different between the poor and good cognitive group suggesting no proved indication to the use of vitamin B1, B12 and folate in the healthy elderly with poor cognitive function.

Aged↗

PubMed1997

Urinary tract infection in the elderly: a clinical study.

Urinary tract infection is one of the most common causes of infection in the elderly living in the community as well as in institutions. While the preventive measures involve the enhancement of immunological status, perineal hygiene and avoiding unnecessary instrumentation, the clinical manifestation predicting the outcome, the main objective of the study, is also no less important after the infection takes place. Cross-sectional study was designed recruiting 107 cases from the general medical wards to compare various relevant clinical parameters in terms of the final outcome. The result showed that the aged group 75 years old or more, the catheter-related cases, prior bedbound status, confusion, anorexia with nasogastric tube feeding, respiratory failure requiring mechanical ventilation, septic shock, the presence of candida in urine, the extreme temperature either less than 37 degrees C or more than 40 degrees C and finally the mistake in interpreting the gram stain of the urine were found more common in the dead group with statistical significance. Multiple logistic regression analysis revealed anorexia with nasogastric tube feeding, prior bedbound status, the need for mechanical ventilation, septic shock and extreme body temperature response independently predicted the outcome of the elderly with urinary tract infection.

Aged↗

PubMed1995

Liver abscess in polycystic liver disease.

A case of an elderly female whose clinical manifestations were atypical in view of physiologic aging changes and multiple pathology commonly found in the geriatric group. The liver abscess had presented clinically and radiologically like a hepatic malignancy and pus was obtained during the process of liver biopsy. Even though anchovy-like pus suggested amebic in origin, the microscopic exam showed numerous polymorphonuclear leucocyte and the culture both from the blood and pus grew Klebsiella spp. as well as the study for E. histolytica antibody was also negative. Pyogenic liver abscess was the working diagnosis and indicated for surgical drainage. Adult polycystic liver disease was found intraoperatively and the liver pathology did reveal the presence of many amebae in the cavity of the right lobe of the liver. After the administration of ceftriaxone and metronidazole as well as the surgical drainage, the patient recovered uneventfully within sixteen days of admission.

Aged↗