Urodynamic equipment: technical aspects

Rowan, David; James, E. D.; Kramer, A. E. J. L.; Sterling, Arthur M.; Šuhel, Peter

doi:10.3109/03091908709062796

Cited by 72 publications

(28 citation statements)

References 1 publication

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“…Mesane kapasitesini de Hjalmas denklemi (30+(yaşx30)) ile hesaplıyoruz (6) . Sistometri için gerekli olan donanım kısmı Şekil 1'de özetlenmiştir (2) . Mesane ve rektum içerisinden kateterler vasıtasıyla transdüsere iletilen basınç değişiklikleri burada elektrik sinyallerine dönüştürülür.…”

Section: A) Dolum Sistometrisiunclassified

“…Ürodinamik basınç verileri 15 Hz kadar yüksek olabilen bir dizi frekans bileşenlerinden oluşmaktadır (2) . Bu nedenle bir basınç değişikliğine farklı kateter sistemlerinin nasıl yanıt verdiğinin tanımlanması önem-lidir.…”

Section: Sinyalunclassified

“…İdrar hacminin zamana göre değişimini hesaplayarak akım hızını gös-terirler. Üretici firmaların büyük çoğunluğu tarafından tercih edilen sistemdir (2,11,23) .…”

Section: F) Akım öLçümüunclassified

“…Disk yardımcı bir motorla idrar akım hızındaki değişimlere karşın aynı hızda devamlı döndürülür. Akım sinyali, elektronik olarak işenen idrar hacmini kaydetmek üzere entegre edilir (2,23) .…”

Section: F) Akım öLçümüunclassified

“…Uluslararası Kontinens Topluluğu (ICS) 1987 yılında ürodinamik ekipman üzerine bir rapor yayınlanmıştır (2) . Bu raporda urodinami donanımı ve teknik özel-likleri detaylı bir şekilde açıklanmıştır.…”

Section: Introductionunclassified

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Urodynamic equipment

Yağmur¹

2016

tcdd

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Section: A) Dolum Sistometrisiunclassified

Section: Sinyalunclassified

“…İdrar hacminin zamana göre değişimini hesaplayarak akım hızını gös-terirler. Üretici firmaların büyük çoğunluğu tarafından tercih edilen sistemdir (2,11,23) .…”

Section: F) Akım öLçümüunclassified

Section: Introductionunclassified

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Urodynamic equipment

Yağmur¹

2016

tcdd

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Characterization of pressure changes in the lower urinary tract during coughing with special reference to the demands on the pressure recording equipment

et al. 1994

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The exact demands on urodynamic equipment for measurement of coughs and cough associated pressure changes in the lower urinary tract have been analyzed from high‐speed pressure recordings using a double microtip transducer and a storage oscilloscope. The equipment was tested in vitro by the step‐test method. The natural frequency response was 175.6 Hz and the rise‐time 2.5 ms, resulting in accurate measurements of frequencies up to about 60 Hz which is way above the clinically measured frequencies. Four men and 2 women, all of whom were healthy volunteers, were examined in the supine position with an empty bladder. Pressures were measured in the bladder and in the external sphincter zone of the urethra. The spectral power density of the bladder and urethral pressures were calculated by Fourier analysis. The pressure changes in the urethra were in all volunteers equal to or slower than in the bladder. The analysis of the spectral power density showed that 99% of the pressure changes could be recorded with an instrument capable of recording 9 Hz frequencies, i.e., with a sampling rate of 18 Hz or more. © 1994 Wiley‐Liss, Inc.

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Standard and extramural ambulatory urodynamic investigation for the diagnosis of detrusor instability-correlated incontinence and micturition disorders

Porru

Usaï²

1994

Neurourol. Urodyn.

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Forty‐six patients were evaluated for complaints of urinary incontinence or voiding disorders. Diagnostic testing included a detailed history, physical examination, urine analysis, and urodynamic studies consisting of a conventional urodynamic test (S.I.) including provocative manocuvers and extramural ambulatory urodynamic monitoring (c.a.m.). We compared the pre‐classificalion diagnoses obtained from the medical history with both urodynamic tests. Conventional cystometry detected detrusor instability in 8 patients out of 16 with a history of urgency, while a normal detrusor behaviour was observed in the other 8. “Provocative” manocuvers yielded an additional 13.3%. Extramural ambulatory monitoring confirmed the diagnosis in the 8 patients with hyperactivity and revealed detrusor instability in a further 7. E.a.m. proved adequate in 93.7% of patients with symptoms of detrusor instability. In the group of patients with urinary stress incontinence (USI) e.a.m. revealed detrusor instability in 18.7% of the patients, but did not significantly improved the diagnostic results obtained by S.I. Coughing was the most ellective stimulus to objectify stress incontinence. The comparison of the results obtained with S.I. and those obtained with home e.a.m. will probably lead to a more rational use of both methods. Our data confirm the promising impact of ambulatory urodynamic investigation. © 1994 Wiley‐Liss, Inc.

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Urodynamic equipment: technical aspects

Cited by 72 publications

References 1 publication

Urodynamic equipment

Urodynamic equipment

Characterization of pressure changes in the lower urinary tract during coughing with special reference to the demands on the pressure recording equipment

Standard and extramural ambulatory urodynamic investigation for the diagnosis of detrusor instability-correlated incontinence and micturition disorders

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