J Med Assoc Thai 2000; 83 (3):217

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Initial Disease Modifying Antirheumatic Drugs and Prednisolone Prescriptions for Patients with Rheumatoid Arthritis : A 15-year Study
Osiri M Mail, Akkasilpa S , Deesomchok U

MANATHIP OSIRI, M.D.*,
SOMCHAI AKKASILPA, M.D.*,
UTIS DEESOMCHOK, M.D.*
Objective : To compare patterns and time trends of initial disease-modifying antirheu-
matic drugs (DMARDs) and prednisolone prescriptions for patients with rheumatoid arthritis
(RA) by the rheumatologists at King Chulalongkorn Memorial Hospital, Bangkok, Thailand
over a 15-year period, as well as their side effects.
Method : Medical records of all patients with RA seen at the Rheumatology Clinic from
January 1983 to June 1997 with a duration of follow-up of 6 months or more were reviewed. Infor-
mation on the disease, initial DMARDs prescriptions and their side effects, prednisolone usc.
dosage and side effect(s) were focused and compared among three 5-year periods (1983-1987.
1988-1992 and 1993-1997).
Results : 236 patients were included in this study. There were 44, 82 and
II
0 patients in
the first, second and third period, respectively. Methotrexate (MTX) was the most frequently
prescribed DMARD in all time periods. Dapsone and intramuscular (IM) gold were prescribed
in the first period while antimalarial drugs and sulfasalazine (SSZ) were increasingly used in
the second and third periods. Combination treatment of DMARDs was first used in the third
period. Side effects from MTX were observed in patients with a longer duration of treatment
(p
<
0.05). Patients prescribed combined DMARDs did not develop more side effects compared
with those who had monotherapy. Prednisolone was prescribed in 57.2 per cent of the patients,
most being newly prescribed at the clinic. Mean starting dose of prednisolone was 8.9 mg per
day. 64 patients took prednisolone together with non-steroidal antiint1ammatory drugs (NSAIDs).
Gastrointestinal side effects did not increase in these patients.
Conclusion : MTX was the most frequently prescribed DMARDs regardless of the time
period. Antimalarial drugs, SSZ and combination of DMARDs (most were MTX
+
chloro-
quine) have been prescribed more in the last 5 years, while dapsone, auranofin and IM gold were
rarely used as initial DMARDs. Low dose prednisolone was prescribed in more than half of the
patients with RA. Side effects from DMARDs and prednisolone found in this study were com-
parable to previous reports.
Key word :
Rheumatoid Arthritis, Disease-Modifying Antirheumatic Drugs, Prednisolone,
Pattern of Prescription, Side Effects

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