Benjamas Chuaychoo

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The normal spirometric reference values for Thai people are still not yet available. The aim of this study was to establish standard spirometric equations for Thai people. Subjects 10 years of age and over were selected and their demographic distributions represented that of the population of the whole country. Inclusion criteria were strictly lifetime(More)
COPD substantially affects the national healthcare resource and healthcare cost especially among the older persons. Identifying the accurate prevalence and incidence reflects the scale of problem posed by COPD. This epidemiological study using the criteria for diagnosing COPD based on ratio of FEV1.0/FVC less than 70 per cent and the reversibility of less(More)
We evaluated the immunogenicity of a reduced-dose intradermal trivalent, inactivated, split-virion seasonal influenza vaccine compared to that of a conventional intramuscular vaccination in chronic obstructive pulmonary disease (COPD) patients. One hundred and fifty-six COPD patients randomly received either 0.2 ml (6 microg hemagglutinin (HA) per strain)(More)
The effect of excessive heat accumulated in the body is life threatening. It could damage not only body fluid electrolyte haemostasis, but kidney, liver, and hematologic function. The example reported herein was a Thai laborer, previously healthy, 32 years of age. He joined the tricycle race from Chiang Mai to Lumpoon, which is about 30 km. The tournament(More)
OBJECTIVE To study the prevalence of osteoporosis and osteopenia in Thai COPD patients and the factors associated with osteoporosis. MATERIAL AND METHOD A cross sectional study was used to evaluate 102 male stable COPD patients. Bone mineral density at lumbar spine (L2-4) and femoral neck were measured by dual energy x-ray absorptiometer scan. Demographic(More)
This study aims to explore the cost-effectiveness of Mini Peak Expiratory Flow (miniPEF) as a screening test for Chronic Obstructive Pulmonary Disease (COPD) among the elderly in 124 urban communities around Siriraj Hospital, using the gold standard of diagnosis based on the guidelines of the Thoracic Society of Thailand. There were 3,094 subjects who(More)
Regular screening with chest radiography (CXR) in an annual physical check up of the elderly is most frequently practiced. This study aimed to identify the CXR indices and the cost-effectiveness of CXR as a screening test for Chronic Obstructive Pulmonary Disease (COPD) among the elderly in 124 urban communities of Bangkok around Siriraj Hospital. The gold(More)
This study aimed to explore the cost-effectiveness of using a questionnaire as a screening test for Chronic Obstructive Pulmonary Disease (COPD) among the Bangkok elderly residing around Siriraj Hospital. The gold standard used for diagnosing COPD followed the guidelines of the Thoracic Society of Thailand. The questionnaire consisted of 10 questions on(More)
Cryptococcosis is an opportunistic infection caused by a ubiquitous encapsulated yeast, Cryptococcus neoformans. The pulmonary infection is primary site and most frequently self-limited and may be asymptomatic. The most common recognized site of disseminated cryptococcosis is the central nervous system. The cutaneous cryptococcosis is rare and nonspecific.(More)
BACKGROUND Previous analysis of survey data from a study in older urban Thai persons reported prevalence of chronic obstructive pulmonary disease (COPD) of 7.11% according to formerly recommended criteria that used fixed ratio (70%) of pre-bronchodilator FEV1/FVC as the cut-off value. In 2012, the Global Lung Initiative (GLI)-2012 equations for spirometric(More)