CPD 3 Midterm Flashcards
Anatomy of the penis:
- Shaft: 2 lateral dorsal columns (corpora cavernosa) and 1 ventral column (corpora spongiosum/ cavernosum urethrae) which contains urethra
- head = glans penis, forms a shoulder (corona) at jxn w shaft.
- Prepuce= foreskin, covers glans (unless circumcised)
Before you begin the male exam:
- Always wear gloves.
* Have pt stand while you sit to his side
Order of Male exam palpation:
• inguinal nodes, penis, scrotum, testis, epididymis, spermatic cords, inguinal canals
Inguinal LN chains (M), and what they drain:
- horizontal: just below inguinal ligament. drains skin of lo abd wall, external genitalia (except testis), anal canal, lower vagina, and gluteal area.
- vertical: beside upper segment of great saphenous v, drains that area of leg. often palpable.
M Inguinal LN palpation, LA:
- note size (in cm), consistency, symmetry, and tenderness.
- no validated scales for lymphadenopathy
- UL: infx scrotum, epididymis, urethritis, chancroid, lymphogranuloma. Testes drain deep into pelvic nodes, so LA dt testicular issue won’t be palpable
- BL: mb syphilis or gonorrhea
Inspection and Palpation of Penis:
- View in dorsal position, then have pt retract prepuce (if present)
- Begin at root, palpate entire length of shaft
- Note nodules, ulcers, scars, tenderness, bruising, retraction of foreskin, edema, fracture of shaft
- nits or lice at base of hair shaft.
- location of urethral meatus.
- Check terminal urethra by compressing glans bw thumb and forefinger. Look for redness, d/c
Anatomy of scrotum:
- L testicle and scrotum usu lower than right
- Thin skin overlies dartos tunic muscle, internally separates scrotum into 2 halves; each half contains testis, epididymis, spermatic cord
- Drains to inguinal nodes
Potential finding in scrotum:
- Sebaceous cysts: Common, usu multiple. Firm, nontender. Yellowish contents of cyst may show through skin.
- Edema: Assoc w generalized edema (CHF). Thickened walls pit on pressure. Lymphedema (elephantiasis) dt blocked ducts from filariasis
- Hernia: may auscultate for bowel sounds
- Carcinoma: painless nodule
Anatomy of testis & epididymis:
- Solid ovoid in shape, suspended in scrotum, vertical long axis
- upper pole capped by head of epididymis
- body of epididymis attached vertically to posterior surface of testis
- tail of epididymis continuous with vas deferens and other vessels, forms spermatic cord
Palpation and inspection of Testis, Epididymis, Spermatic cord:
- T: Use thumb and forefinger; assess size, shape, consistency, sensitivity to pressure. Transilluminate each if any significant findings (eg swelling)
- E: vertical ridge of soft nodule at upper testicular pole, usu behind testis (~7% are anterior, a normal variant). Compare head, body, tail segments BL
- S: distinct hard cord, width of a lead pencil, contains vas deferens. trace cord down to testis and compare BL
Potential finding of testicle:
- Maldescended testis = cryptorchism: In children, one side mb raised. May result in sterility.
- Hydrocele: NT accum serous fluid from infx or trauma. Testis and epididymis usu behind the mass. Transilluminates
- Hematocele: NT accum blood. Swells like hydrocele, but opaque on transillumination
- Chyocele: NT lymph accum. Mass is translucent.
- Tuberculosis: Large hard nodular mass (neoplasm and tertiary syphilis also produce indurated NT masses).
- Acute orchitis: Painful, tender, swollen. Assoc w mumps, infx dz. Mb simultaneous epididymitis. Must r/o testicular torsion (mb after rigorous workout)
- CA: painless nodule
Potential findigs with spermatic cord:
• Deferentitis: Inflam vas deferens. Tender, swollen.
Hydrocele: dt failure of succus vaginalis to obliterate around spermatic cord →fills w fluid → mass, smooth, resilient, sausage-shaped, above testis
• Varicocele: Varicosities of pampiniform plexus of veins of spermatic cord. soft, irregular mass. Feels like bag of worms. L mc dt pressure of L venous outflow. Collapses slowly when scrotum is elevated in supine pt
• Testicular torsion: Twisted spermatic cord occludes blood to and from testis. Acutely painful, tender, swollen; retracted upward in scrotum. Pt may flex same leg for pain relief
Know the technique for palpating the inguinal ring for hernias.
- Place tip of index finger at most dependent part of scrotum, slowly direct it up into external inguinal ring.
- Have pt strain (valsalva) and cough (away from you). Note any palpable herniating mass against your fingertip
Know the difference between direct and indirect inguinal and femoral hernias.
- Indirect: MC, tissue herniates thru internal ring often into scrotum
- Direct: LC, us M >40, tissue herniates behind external ring rarely into scrotum, dt weak floor of inguinal canal
- Femoral: least common, F>M (PG and birth), never into scrotum; go into femoral canal, more likely to stangulate
What is the normal size and shape of the testicle?
- 5-7cm x 2.5cm
* ovoid
Know the difference between acute orchitis and acute epididymitis.
- Orchitis: entire testicle inflamed, usu seconday to mumps
* Epididymitis: bacterial infection (usu Chlamydia)
Size, position, anatomy of a normal prostate:
- 2.5 cm, about size of a chestnut
- 2 cm posterior to symphisis pubis, posterior surface next to rectal wall
- median sulcus: shallow, divides into R & L lateral lobe
- median lobe delineated by slight depression near superior edge
- Seminal vesicles near superior margin only palpable if inflamed
Prostate Exam:
- Pt lies in left lateral simms position, or bends over table
- Insert lubed gloved finger past anal canal into rectal ampulla. Keep pad of forefinger facing anterior wall
- Note: Smooth or nodular; Round or flat; Atrophied, normal size, or enlarged; Elastic, hard, boggy, soft; Mobile or fixated; Tender or nontender
- Normal feels like tip of nose, boggy like cheek, hard like forehead
Work-up for Prostate CA:
o Prostate Cancer Risk Calculator combines DRE, PSA, FHx; correlates well w bx
o Bx: indicated w abn DRE: induration, asymmetry, palpable nodularity
o DRE can detect tumors in posterior and lateral lobes. Up to 35% in other parts, not palpable
o PSA: for dx and px. Only do before bx (rises a lot). Ok to do after DRE (will rise a little)
Prostatic massage:
• Contraindicated in acute prostatitis
Know the difference between BPH, prostatic cancer, and acute prostatitis on digital rectal exam (DRE).
- BPH: smooth, enlarged symmetric lobes, elastic—rubbery, nontender
- Prostate cancer: hard, nontender nodules, median sulcus may be obscured
- Acute prostatitis: enlarged, tender prostate with asymmetrical edematous tissue, boggy
What is Peyronie’s disease? What are the findings on PE?
• Scarring of the tunica albuginea in the corpora cavernosa formation of plaques that can cause painful erection and dorsal curvature
• Sections of the neuro exam:
o Mental status o Cranial nerves o Motor system o Coordination o Sensory system o Reflexes, including deep tendon reflexes
• Motor system screening:
o Observe: o Walking: Normal gait; Tandem Heel-to-toe; On toes (plantarflexion); On heels (dorsiflexion) o Hopping in place o shallow knee bend on each leg o Drift of upper extremities (20-30 sec) o Assess grip strength
How do we rate muscle strength? How do we test muscle tone? What is spasticity? What is cogwheel rigidity? What conditions cause them?
- Strength: 0-5 scale, hold active resistance for 3-5 seconds
- Tone: resistance even when patient passive
- Spasticity: UMN/corticospinal tract system lesion, rate dependent hypertonia. “clasp-knife resistance”. ↑Tone w rapid passive movement
- Cogwheel rigidity: ratchet like jerkiness, parkinsonism
Muscle strength scale:
- 0: No mm contraction, no joint movement
- 1: Visible contraction w/o strength to move joint
- 2: can move joint, but not overcome gravity
- 3: moves against gravity, but not active resistance
- 4: moves against gravity and some resistance by examiner
- 5: Normal strength, active movement against full resistance w/o fatigue
Things to note w mm strength and tone:
- Plegia (partial or incomplete paralysis)
- Paresis (weakness)
- Involuntary movements (tremor, chorea, myoclonus, dystonia)
- Muscle bulk or atrophy
- Muscle tone (flaccidity, spasticity or rigidity)
Muscle Movements and the Corresponding Nerves:
- Elbow Flexion; C5, 6
- Elbow Extension; C6, 7, 8
- Wrist Extension; C6, 7, 8
- Grip Strength; C7, 8; T1
- Finger Abduction; C8, T1, ulnar nerve
- Thumb Adduction, opposition; C8, T1, median nerve
- Hip Flexion; L2, 3, 4
- Hip Adduction; L2, 3, 4
- Hip Abduction; L4, 5; S1
- Knee Extension; L2, 3, 4
- Knee Flexion; L4, 5; S1, 2
- Ankle Dorsiflexion; L4, 5; S1
- Ankle Plantarflexion; S1, 2
What tests check coordination?
- Rapid alternating movements of arms on lap; dysdiadochokinesis (inability, sign of cerebellar dysfunction)
- Finger tapping test: rapidly tap DIP of thumb w tip of index finger (normal 2 taps/sec)
- finger-to-nose test: dysmetria (ataxia, can’t control distance, power, speed), cerebellar disorders. Extend arm fully. Note any intention tremor
- forearm rolling
- heel to shin test: supine. Also test proprioception.
Pain, temp, light touch sensation and their sensory tracts:
- Note: anesthesia, hypesthesia, paresthesia. Compare arms, legs, trunk
- Pain (LSTT): sharp vs. dull. Don’t reuse sharps (risk transmit infx)
- Temp (LSTT): hot vs. cold
- Light touch (ASTT): brush, cotton, or Semmes-Weinstein monofilament. Diabetic foot: insensate to 5.07 monofilament, ↑risk subsequent foot ulceration and amputation
Posterior Column:
• vibration and proprioception.
Digit Position sense for proprioception:
• hold digit in a “neutral”, up, down, position. Usu big toe, or other
Vibration:
- Tests proprioception
- 128-Hz tuing fork. Strike on your palm ~20 cm
- heathy 40yo should perceive vibrations for at least 11 secs at med malleolus, 15 at lat, 15 at ulnar styloid. ↓ 2 secs w every decade > 40