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Titolo:
Tamsulosin in men with confirmed bladder outlet obstruction: a clinical and urodynamic analysis from a single centre in New Zealand
Autore:
Arnold, EP;
Indirizzi:
Christchurch Hosp, Dept Urol, Christchurch, New Zealand Christchurch HospChristchurch New Zealand l, Christchurch, New Zealand
Titolo Testata:
BJU INTERNATIONAL
fascicolo: 1, volume: 87, anno: 2001,
pagine: 24 - 30
SICI:
1464-4096(200101)87:1<24:TIMWCB>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
BENIGN PROSTATIC HYPERPLASIA; SELECTIVE ALPHA(1A)-ADRENOCEPTOR ANTAGONIST; SYMPTOMATIC BPH; MULTICENTER; TERAZOSIN; EFFICACY; SUBTYPES; THERAPY; SAFETY; TRIAL;
Keywords:
lower urinary tract symptoms; benign prostatic obstruction; tamsulosin; urodynamics;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Arnold, EP Christchurch Hosp, Dept Urol, Private Bag 4710, Christchurch, New Zealand Christchurch Hosp Private Bag 4710 Christchurch New Zealand d
Citazione:
E.P. Arnold, "Tamsulosin in men with confirmed bladder outlet obstruction: a clinical and urodynamic analysis from a single centre in New Zealand", BJU INT, 87(1), 2001, pp. 24-30

Abstract

Objective To evaluate the clinical and pressure-now effects of tamsulosin 0.4 mg once daily in patients with lower urinary tract symptoms (LUTS) caused by benign prostatic obstruction (BPO), as documented by pressure-flow studies performed according to a standardized protocol in one centre. Patients and methods A single-centre study was conducted with an open-label design comprising a 2-week, single-blind, placebo run-in period and a la-week active treatment period with tamsulosin 0.4 mg once daily. Eligible patients were men (aged greater than or equal to 45 years) with LUTS (total International Prostate Symptom Score, IPSS, greater than or equal to 13) with a free-flow maximum urinary now rate (Q(max)) of greater than or equal to4 mL/s for a voided volume of greater than or equal to 120 mL. After the 2-week placebo run-in period, only patients with BPO (i.e, in the obstructed zone of the Abrams-Griffiths, AG, nomogram) received active treatment with tamsulosin. The two primary efficacy variables were the change in detrusor pressure at maximum now (P-detQmax) and the total IPSS, from baseline to endpoint. A standardized protocol was used for all pressure-now studies. Results In all, 42 patients were enrolled into the 2-week placebo run-in period, after which 30 received active treatment with tamsulosin 0.4 mg oncedaily. All 12 patients (29%) who discontinued during the placebo run-in period failed to fulfil the pressure-now entry criterion of confirmed obstruction. The 30 patients who received tamsulosin had a high mean P-detQmax (82.1 cmH(2)O) and high mean AG number (68.1) at baseline, as would be expected in obstructed patients. Tamsulosin produced a significant reduction in mean P-detQmax (-10.6 cmH(2)O or -13%; P = 0.005 vs baseline). The mean AG number decreased accordingly (-15.5 points or -23%; P < 0.001 vs baseline). The pressure-flow mean Q(max) was increased by 2.5 mL/s (36%) from 7.0 mL/s at baseline (P = 0.002 vs baseline). Urodynamic improvements were accompanied by a good symptomatic response; the mean total IPSS was reduced by 6.7 points from a baseline value of 18.1 (-37%, P < 0.001 vs baseline). At the endpoint, 67% of patients had a clinically significant symptomatic response (defined as a decrease in total IPSS of greater than or equal to 25% from baseline). Twenty-six patients (87%) were either slightly improved (13) or were much improved (13) in the opinion of the investigator. Twelve patients with LUTS who were unobstructed after the 2-week placebo run in (P-detQmax 44.1 cmH(2)O) received tamsulosin treatment outside of the study protocol. Although these patients had no decrease in mean P-detQmax, the magnitude ofthe symptomatic response (decrease in total IPSS -6.4 or -34%, P = 0.001) was comparable with that in unobstructed patients; the free-flow Q(max) wasalso significantly improved. Possibly or probably drug-related adverse events were reported in nine patients; one discontinued tamsulosin treatment because of a serious adverse event. Conclusion Tamsulosin 0.4 mg once daily can produce a significant decreasein detrusor pressure, increase in now rate and a symptomatic improvement in patients with LUTS and confirmed obstruction. Patients with LUTS who are unobstructed and have a low initial detrusor pressure appear to have no improvement in detrusor pressure, but have similar clinical responses to thosein obstructed patients. Pressure-flow studies can be reserved for those patients with LUTS who fail to respond to these agents and in whom further diagnosis and management is warranted.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/01/20 alle ore 01:23:35