Blood gas analyses of aspirated blood from corpora cavernosa
PH PC[O.sub.2] P[O.sub.2] S[O.sub.2]% HC[O.sub.3] BE 7.44 39 mmHg 90 mmHg 97% 26.5 2.3 mmol/L PH: Hydrogen ion concentration; PC[O.sub.2]: Partial pressure of carbon dioxide; P[O.sub.2]: Partial pressure of oxygen; S[O.sub.2]: Oxygen saturation; HC[O.sub.3]: Bicarbonate level; BE: Base excess (positive number) or base deficit (negative number)
(23) with alloxan-induced diabetic rabbits resulted in a significant increase in [ET.sub.B] after 6 months of diabetes and a non-significant increase of [ET.sub.A] diffused by the corpora cavernosa
in the microvasculature located at the edge of the cavernosum corpus and tunica albuginea.
Sjontoft, "The elasticity and the tensile strength of tunica albuginea of the corpora cavernosa
," The Journal of Urology, vol.
The scanned images were analyzed through ImageJ v1.50a software for the measurement of the total areas of the corpora cavernosa
, corpus spongiosum, erectile tissue, and tunica albuginea of the corpora cavernosa
; and the thickness of the corpora cavernosa
and corpus spongiosum, as depicted in Figure 1.
Key findings in the evaluation of priapism (references 1 and 3) Ischaemic priapism Corpora cavernosa
fully rigid Usually Corpora cavernosa
tumescence without full rigidity Seldom Penile pain Usually Abnormal cavernous blood gases Usually Haematological abnormalities Usually Recent intracavernosal injection Sometimes Perineal trauma Seldom Non-ischaemic priapism Corpora cavernosa
fully rigid Seldom Corpora cavernosa
tumescence without full rigidity Usually Penile pain Seldom Abnormal cavernous blood gases Seldom Haematological abnormalities Seldom Recent intracavernosal injection Sometimes Perineal trauma Usually Table 4.
The mechanism of penile erection involves arterioles, venules, and arteriovenous anastomotic channels of the corpora cavernosa
. (1) in the flaccid state, the arterioles are partially closed while the venules and arteriovenous channels remain open leading to an unimpeded drainage of the arterial inflow.
Priapism can have potentially serious long-term consequences including erectile dysfunction due to ischemia and fibrosis of the corpora cavernosa
Running along the length of the penis are two cavernous (like a sponge) chambers, called the corpora cavernosa
or the erectile tissues, containing a maze of blood vessels consisting of arteries, several veins and nerves.
(1, 2) Following sexual stimulation, nNO and eNO, are released in the corpora cavernosa
of the penis to activate the enzyme guanylyl cyclase that leads to the transformation of guanosine monophosphate (GMP) into cyclic GMP (cGMP), which triggers both; relaxation of the helicine arteries and constriction of veins resulting in erection.
One of the main issues is the corpora cavernosa
dissection up to their attachments to the inferior ramus of the pubic bones .
Histological examination revealed verrucous carcinoma of the penis invading the underlying stroma with a broad based pushing border, with no invasion of the corpora cavernosa
, corpus spongiosum, and the urethra.