Abstract | OBJECTIVE: METHOD: A total of 118 children with POTS were divided into oral rehydration salts group (n = 39), metoprolol group ( oral rehydration salts plus metoprolol, n = 10) or midodrine hydrochloride group ( oral rehydration salts plus midodrine hydrochloride, n = 69). The patients were followed up in clinics or over telephone for 3 - 18 months, with a mean of (11.7 ± 4.1) months. The symptom scores were recorded before treatment, after 3 months and at the end of the follow-up. Reduction of the score by 2 points or more was considered that the treatment was effective. The effective rate in 3 months was applied to evaluate short-term effects of 3 different therapies by chi-square test. Taking futility as events, Kaplan-Meier curves were drawn to compare long-term effects of the 3 different therapies in treating POTS in children. RESULT: No significant differences among the 3 groups were found in sex, age, body height, weight, the symptom scores before treatment or hemodynamic variables. Oral rehydration salts, metoprolol and midodrine hydrochloride improved clinical symptoms after 3 months. The symptom scores of the 3 groups before treatment and after 3 months were 2.4 ± 3.2 vs. 5.5 ± 2.9, 2.2 ± 3.0 vs. 6.1 ± 3.0 and 1.9 ± 1.6 vs. 5.9 ± 2.7, respectively. The difference was significant (P < 0.05). Descending order of the short-term effective rate was 91.3% in midodrine hydrochloride group, 80.0% in metoprolol group and 74.4% in oral rehydration salts group. The difference was significant (χ(2) = 5.85, P < 0.05). All the 3 different therapies improved clinical symptoms at the end of follow-up. The symptom scores were 2.6 ± 3.2 vs. 5.6 ± 2.9, 2.5 ± 3.1 vs. 6.1 ± 3.0 and 2.2 ± 2.1 vs. 6.0 ± 2.7, respectively. (P < 0.05). The result of the Kaplan-Meier curves showed that the long-term effect of midodrine hydrochloride was significantly superior to metoprolol group and oral rehydration salts group (P < 0.05). There was no significant difference between the latter two groups. CONCLUSION:
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Authors | Feng-wen Zhang, Ying Liao, Xue-ying Li, Li Chen, Hong-fang Jin, Jun-bao DU |
Journal | Zhonghua er ke za zhi = Chinese journal of pediatrics
(Zhonghua Er Ke Za Zhi)
Vol. 49
Issue 6
Pg. 428-32
(Jun 2011)
ISSN: 0578-1310 [Print] China |
PMID | 21924055
(Publication Type: Clinical Trial, Comparative Study, English Abstract, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
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Topics |
- Adolescent
- Child
- Female
- Humans
- Male
- Metoprolol
(therapeutic use)
- Midodrine
(therapeutic use)
- Postural Orthostatic Tachycardia Syndrome
(drug therapy)
- Prospective Studies
- Treatment Outcome
- Young Adult
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