Comparative Study between AudiovisualSexual Stimulation Test and Nocturnal Penile Tumescence Test Using RigiScan Plus in the Evaluatio n of Erectile Dysfunction

Mizuno, Ichiro; Fuse, Hideki; Fujiuchi, Yasuyoshi; Nakagawa, Osamu; Akashi, Takuya

doi:10.1159/000077119

Cited by 19 publications

(19 citation statements)

References 16 publications

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“…Although an obvious limitation of the technique derives from the fact that it cannot provide a continuous monitoring of time-related events, the DIR has recently come to be used broadly in the field of ED [10,11] . It is a very fast technique with no pain, and can be used by the patient himself at home and also in the consulting room after injection of vasodilating drugs or/and audiovisual sexual stimulation [12] . Overall, the results of the present study revealed a good correlation between axial penile rigidity and radial penile rigidity.…”

Section: Discussionmentioning

confidence: 99%

Importance of Axial Penile Rigidity in Objective Evaluation of Erection Quality in Patients with Erectile Dysfunction – Comparison with Radial Rigidity

Mizuno¹,

Komiya²,

Watanabe³

et al. 2010

Urol Int

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Introduction: The aim of this prospective study was to evaluate the usefulness of measurement of axial penile rigidity, compared with radial penile rigidity. Patients and Methods: Twenty-two patients, aged 21–75 years old (a mean of 50), with erectile dysfunction underwent axial penile rigidity measurements by the digital inflection rigidometer (DIR) as well as radial penile rigidity measurements by the RigiScan Plus during intracavernous pharmacological erection testing. Results: A significant correlation was recognized between axial rigidity, and radial rigidity at the tip (p = 0.0024) and base (p = 0.0098) of the penis. In 10 patients, the DIR revealed axial rigidity of 550 g or more, and they also had radial rigidity of 60% or more at the tip and base. In 14 and 17 subjects, radial rigidity of 60% or more was observed at the tip and base, respectively. Four of the former 14 and 7 of the latter 17 had axial rigidity <550 g. Conclusions: A RigiScan results of radial rigidity of 60% or more should be interpreted cautiously and not necessarily regarded as normal.

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Section: Discussionmentioning

confidence: 99%

Importance of Axial Penile Rigidity in Objective Evaluation of Erection Quality in Patients with Erectile Dysfunction – Comparison with Radial Rigidity

Mizuno¹,

Komiya²,

Watanabe³

et al. 2010

Urol Int

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“…26 An NPTR outline with at least an erectile episode characterized by 60% rigidity at both base and tip for at least 10 min is considered to be normal. 27 Total lack of rigidity at 60-79% at altitudes higher than 4450 m in individuals that are healthy and strong at sea level shows the key role played by chronic hypoxia in the reduction of erythrocyte sedimentation rates.…”

Section: Discussionmentioning

confidence: 99%

The role of hypoxia in erectile dysfunction mechanisms

et al. 2007

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Chronic hypoxia is related to many pathological conditions: aging, heart and respiratory failure, sleep apneas, smoke, chronic obstructive pulmonary disease (COPD), diabetes, hypertension and arteriosclerosis, all characterized by reductions of sleep-related erections (SREs) and by erectile dysfunction (ED). Sleep-related erections occur naturally during rapid eye movement (REM) sleep in sexually potent men. Hypoxia is also a physiological condition at altitude. The level of inspired oxygen decreases progressively with the increase of altitude; for this reason, this study was performed to evaluate the relationship of SREs with hypoxic environment. SREs have been recorded by an erectometer (RigiScan) on three mountain climbers (mean age: 32.5) during a 26-day stay at an altitude ranging from 2000 to 5600 m above sea level. Twenty-four records have been made at progressively increasing altitudes. A data analysis was carried out on a statistical mean of the three values of each variable and an analysis of variance (ANOVA) and Newman-Keuls test were carried out for multiple comparison among groups. At altitudes over 4450 m, we found lack of rigidity at 80-100% and 60-79%. Mean % of rigidity and rigidity time of 80-100% (tip and base) decreased progressively with altitude. No significant reductions were shown in rigidity time at 0-19% and at 20-39% (tip and base), of total number, of total and mean duration of SREs. Pathological rigidometric records at high altitude in sexually potent men at sea level clarify the primary role of hypoxia in physiopathological ED pathway.

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“…[1] The other diagnostic methods, which are more invasive than NPT test, are color Doppler sonography, dynamic cavernosometry, and cavernosography. Three methods can be used for the assessment of erectile capacity: measurement of spontaneous erections during night sleep, the erectile response to AVSS in laboratory, and measurement of the response to intracavernosal smooth muscle relax-ants such as prostaglandin E1.…”

Section: Discussionmentioning

confidence: 99%

“…Three methods can be used for the assessment of erectile capacity: measurement of spontaneous erections during night sleep, the erectile response to AVSS in laboratory, and measurement of the response to intracavernosal smooth muscle relax-ants such as prostaglandin E1. [1] We aimed to investigate the role of AVSS test in differentiation of psychogenic and organic ED. Of the three methods, NPT measurement is the first objective diagnostic approach to differentiate psychogenic and organic ED.…”

Section: Discussionmentioning

confidence: 99%

“…They adopted the penogram, which shows dynamic penile blood flow changes using a radioisotope, for the AVSS test and the Snap-Gauge band (Life-Tech model 1424 Tumistore) or RigiScan for the NPT test. Mizuno et al [1] compared NPT and AVSS in 43 patients with ED. Martins et al [14] reported that in a total of 76 patients the AVSS test using the RigiScan differantiated psychogenic ED with 71% sensitivity and 96% specificity.…”

Section: Discussionmentioning

confidence: 99%

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Comparison of audiovisual sexual stimulation test with nocturnal penile tumescence test in the evaluation of erectile dysfunction by using RigiScan

Incirci¹,

Üçer²,

Karatas³

et al. 2010

Turkish Journal of Urology

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ÖzetAmaç: Erektil disfonksiyon (ED) tanısında nokturnal penil tümesans (NPT) testi zaman kaybına ve rahatsızlığa neden olan, rölatif olarak pahalı bir yöntemdir. Bu çalışmanın amacı nokturnal ve erotik ereksiyon arasındaki ilişkiyi açıklamak ve medikasyonlu ve medikasyonsuz vizüel seksüel stimulasyon (VSS) testinin tanısal etkinliğini incelemektir. Gereç ve yöntem: ED'si olan toplam 30 hasta çalışmaya alındı. Hastalara International Index of Erectile Function-5 (IIEF-5) formu doldurtuldu. RigiScan Plus ile tüm hastalara VSS ve NPT testleri uygulandı. VSS testleri medikasyonlu (50 mg sildenafil sitrat) ve medikasyonsuz olarak yapıldı. Hastalar NPT ve VSS test sonuçlarına göre psikojenik ve organik olarak iki gruba ayrıldı. Bulgular: Çalışma grubundaki hastaların ortalama yaşı 46.4 (23-69), IIEF-5 skoru 10.8±4.5 idi. Pozitif NPT testi olan 21 hastanın 18'inde (%85.7) VSS testi de pozitif bulundu. Negatif NPT testi olan 9 hastanın ise 7'sinde (%77.8) VSS testi negatif idi. Psikojenik grupta VSS testinin spesifitesi %85.7 ve sensitivitesi %77.8 olarak bulundu. Toplam doğruluk oranı ise %83.3 idi. Sonuç: VSS testi ile karşılaştırıldığında NPT testi daha pahalı, can sıkıcı ve rahatsız edicidir. Her iki testin etkinliği benzer olmasına rağmen VSS testi daha avanyajlı gibi durmaktadır. ED tanısında tanı yöntemi olarak medikasyonsuz VSS'yi başlangıç değerlendirmesinde önermekteyiz. VSS negatif olan hastalarda ise medikasyonlu VSS tanıda ikinci aşama olarak kullanılmalıdır. Anah tar söz cük ler: Erektil disfonksiyon; nokturnal penil tümesans; penil ereksiyon; RigiScan; vizüel seksüel stimülasyon. AbstractObjective: Nocturnal penile tumescence (NPT) test is a time-consuming, cumbersome, and relatively expensive method which is used for the diagnosis of erectile dysfunction (ED). The aims of the study were to clarify the relationship between erotic and nocturnal erections and to evaluate the diagnostic efficacy of the audiovisual sexual stimulation (AVSS) test with and without medication. Materials and methods:A total of 30 patients with ED were examined. Each patient filled in an International Index of Erectile Function-5 (IIEF-5) questionnaire. AVSS and NPT tests were performed using the RigiScan Plus. AVSS test was performed with and without medication (sildenafil citrate 50 mg). Patients were divided into two groups (psychogenic and organic groups) according to NPT and AVSS test results. Results:The mean age of the patients was 46.4 (23-69) years and IIEF-5 score was 10.8±4.5. Positive AVSS test was found in 18 (85.7%) of the 21 patients with positive NPT test. Negative AVSS test was found in 7 (77, 8%) of the 9 patients with negative NPT test. The specificity of AVSS test was 85.7% and sensitivity was 77.8% for the psychogenic groups. The overall accuracy rate was 83.3%. Conclusion:The NPT test is more expensive, cumbersome, and discomfortable than the AVSS test. Although efficiency of both tests is similar, the AVSS test seems more advantageous. We suggest that the AVSS test without medication should be performed as th...

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Comparative Study between AudiovisualSexual Stimulation Test and Nocturnal Penile Tumescence Test Using RigiScan Plus in the Evaluatio n of Erectile Dysfunction

Cited by 19 publications

References 16 publications

Importance of Axial Penile Rigidity in Objective Evaluation of Erection Quality in Patients with Erectile Dysfunction – Comparison with Radial Rigidity

Importance of Axial Penile Rigidity in Objective Evaluation of Erection Quality in Patients with Erectile Dysfunction – Comparison with Radial Rigidity

The role of hypoxia in erectile dysfunction mechanisms

Comparison of audiovisual sexual stimulation test with nocturnal penile tumescence test in the evaluation of erectile dysfunction by using RigiScan

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