Abstract：
OBJECTIVE:To determine the exact anatomical structure for establishing penile veno-occlusive function, we sought to conduct a hemodynamic study on defrosted human cadavers. MATERIALS AND METHODS:Thirteen penises were used for this experiment, and 11 intact penises were allocated into the electrocautery group (EG, n = 6) and the ligation group (LG, n = 5). A circumcision was made on the penis to access the veins. Two #19 scalp needles were fixed in the 3 and 9 o'clock positions in the distal penis for colloid infusion and intracavernous pressure (ICP) monitoring, respectively. For the EG, the deep dorsal vein and cavernosal vein trunks were freed for 3-5 cm where at least 3 emissary veins were identified via opening Buck's fascia; these veins underwent electrocautery at 45 watts, while the ICP was maintained at 0, 50, 75, 100, 125, and 150 mmHg, respectively. For control, venous ligation was made but at the ICP of 150 mmHg. A tissue block including the emissary vein was then obtained for histological analysis. RESULTS:Except all in the EG and those whose ICP exceed 125 mmHg in the EG, the sinusoids of the corpora cavernosa sustained varied fulgurated fibrosis in every specimen and the severity appeared reversely commensurate with the ICP regarding sinusoidal clumping and darkish bands (P <.02 and .01 respectively). CONCLUSION:We conclude that the tunica albuginea can prevent the electrocautery damage to intracavernous sinusoids once the ICP reached a level corresponding to a rigid erection. The outer tunica plays an essential role in fulfilling the veno-occlusive mechanism.
journal_name
Urologyjournal_title
Urologyauthors
Hsieh CH,Huang YP,Tsai MH,Chen HS,Huang PC,Lin CW,Hsu GLdoi
10.1016/j.urology.2015.07.054subject
Has Abstractpub_date
2015-12-01 00:00:00pages
1129-35issue
6eissn
0090-4295issn
1527-9995pii
S0090-4295(15)00884-5journal_volume
86pub_type
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