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Randomized comparison of intranasal and transdermal estradiol.
Lopes, P.; Merkus, H. M.; Nauman, J. et al.
2000In Obstetrics and Gynecology, 96 (6), p. 906-12
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Abstract :
[en] To compare the efficacy and patient acceptability of intranasal versus transdermal 17 beta-estradiol (E2) delivery systems for postmenopausal symptoms. METHODS: Postmenopausal women were randomly assigned to intranasal 17 beta-E2, 300 microg daily (n = 176) or transdermal 17 beta-E2 (delivering 50 microg/day), two patches per week (n = 185) for 12 weeks, followed by a 4-week period with the alternate treatment. Efficacy was compared between groups using the Kupperman Index and vasomotor symptoms at week 12. Patient acceptability was compared by patient choice of administration route and by questionnaire at week 16. RESULTS: Intranasal and transdermal therapy produced significant reductions in the Kupperman Index and in the occurrence of hot flushes and night sweats at week 12. Alleviation of climacteric symptoms was statistically equivalent in the two treatment groups (P <.001). The difference between groups in the Kupperman Index score of -0.5 +/- 0.9 (95% confidence interval -2.3, 1.3) was within the predetermined interval of equivalence. Both therapies were well tolerated with similar adverse event rates, except for moderate and severe mastalgia which was significantly less frequent with intranasal E2 (7.2%) than with the patch (15.5%, P =.02). Sixty-six percent of patients chose to continue the intranasal therapy and 34% the transdermal therapy (P <.001). Satisfaction was greater with intranasal therapy at week 16 (P <.001). CONCLUSION: Intranasal and transdermal estrogen delivery systems had equivalent efficacy and similar safety profiles. Intranasal therapy was the patients' choice for long-term treatment.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Lopes, P.
Merkus, H. M.
Nauman, J.
Bruschi, F.
Foidart, Jean-Michel ;  Université de Liège - ULiège > Département des sciences cliniques > Gynécologie - Obstétrique
Calaf, J.
Language :
English
Title :
Randomized comparison of intranasal and transdermal estradiol.
Publication date :
2000
Journal title :
Obstetrics and Gynecology
ISSN :
0029-7844
Publisher :
Lippincott Williams & Wilkins, Hagerstown, United States - Maryland
Volume :
96
Issue :
6
Pages :
906-12
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 May 2011

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