Andrology Flashcards
How do you perform the examination of the groin ?
Patient supine or standing (best for hernia) :
- inspect : skin abnormalities (dermatomycoses), signs of hidradenitis (small painful lymph), scars an visible swelling.
- auscultate : femoral artery for bruit
- palpate : femoral artery, inguinal lymph glands
What is the cause of an inguinal hernia ?
Weakness in the abdominal wall. At a weak point internal tissue protrude forming a hernia sac within the parietal peritoneum.
What is strangulation ?
= incarcerated hernia.
Higher risk if the neck/gate of hernia is narrow. Generally 1-2% of risk.
Cause acute pain due to ischemia of intestinal loop. Symptoms of acute mechanical ileus : vomiting and no stool.
Reducible hernia vs non reducible ?
Reducible : can be pushed back
Non reducible : can’t, due to fusion of the mass with the hernia sac or oedema.
What are the types of inguinal hernia ?
Lateral inguinal hernia : indirect hernia : exclusively in men
Media inguinal hernia = direct hernia : mainly older men, people who cough frequently.
Femoral hernia : less common generally, more present in women.
Characteristics of lateral inguinal hernia ?
Hernia sac is formed by a protrusion of the peritoneum into the inguinal canal. If the tissue within the hernia, end further it protrude into the scrotum = scrotal hernia.
What are the border of the inguinal canal ?
Internal inguinal gate/ring : 1 cm above ligament
External inguinal gate/ring : 5 cm medial, above the point of attachment to the pubic bone.
It contains the spermatic cord.
Characteristics of medial inguinal hernia ?
Weak spot present just above external ring of inguinal canal.
Bulbous swelling that does not descend into the scrotum, protrusion is not reduced by applying pressure to close the canal.
Characteristics of femoral hernia ?
Located below the inguinal ligament, a few cm medial to the palpable femoral artery.
Protrusion of femoral canal mostly non reducible.
How do you detect an hernia ? (Position)
With the patient standing so the gravity makes their hernia more visible.
If they cannot stand => Valsalva manoeuvre : blow on the back of their hand.
- it increase intra-abdominal pressure => the hernia sac will fill if present
- if the swelling disappear once pressure is relieved => reducible hernia
Inspection of an hernia ?
Look for swellings in the inguinal region.
Valsalva manoeuvre.
Auscultation of an hernia ?
If bowel sound in swelling => hernia contains intestinal contain
Palpation of an hernia ?
Palpate the external ring to detect is the mass is reducible.
Draw the little finger from base of scrotum, toward the inguinal canal. Place finger between skin and abdominal muscle, lateral of median line cranially.
Search for inguinal ring by pressing toward the abdominal cavity until detection of the annulus.
Repeat Valsalva manoeuvre, fingertips apply pressure in direction of inguinal ring.
How do you reduce a lateral inguinal hernia ?
Supine patient. Press gently on the swelling.
Do not try if the hernia is painful => risk of strangulation and ischemia leading to a perforation of the bowel
What are the erectile bodies of the penis ?
2 paired corpora cavernosa : dorsal part of the penis. Connected with each other in the external part of the penis
1 corpus spongiosum : ventral part of the penis around the urethra. Swell during the erection and form the glans penis.
What give the penis its shape and firmness ?
The tunica albuginea : a firm and elastic capsule of connective tissue that surround the corpora cavernosa
What does the foreskin covering the glans consist of ?
Inner layer : attached to the shaft at the corporal sulcus, connected to the urethral meatus by the frenulum preputti (prepuce).
Outer layer.
What activity dominate when the penis is flaccid ?
Orthosympathetic activity.
Arterioles and sinusoids of erectile body narrow thus reduced penal perfusion.
What activity dominate when the penis is erect ?
Parasympathetic activity.
Arterioles dilate and corpora cavernosa fill with blood. Increase pressure in the sinusoids press the efferent veins against the tunica albuginae. Impeding venous outflow further increase pressure in the corpora cavernosa until it reach systolic blood pressure.
Pressure in corpus spongiosum is lower because there are less layer and enable the release of ejaculate during emission and urinate when having an erection.
What nerves innervate the penis ?
Autonomic and somatic system.
Sacral parasympathetic nerve : S2-S4
Thoracolumbar sympathetic nerves : Th10-L2
What is the scrotum ?
Part of peritoneum and abdominal wall that protrudes via the inguinal canal and ends in the labial scrotal swellings.
It’s skin is pigmented, hairy and folded. It has sebaceaous glands, sweat glands.
In the midline a raphe can be seen, underlying there’s the intra-scrotal septum.