Saturday, February 6, 2010

Thyroid Examination

Thyroid Examination

  1. Greet the patient -> handshake
    • Handshake
      1. Sweating
      2. Normal temperature
      3. Pulse?
  2. Explain
  3. Seek permission
  4. Right side always
  5. Proper exposure
  6. Ensure privacy


General Inspection:

  • Appropriately dressed for temperature outside?
  • Comment on obesity, weight loss
  • Anxious, agitated, lethargic?
  • Exophthalmos
  • Dry skin (hypothyroidism)
  • Hair – loss?
  • Facial myxedema?


Examination of the hands:

  • Check pulse (bradycardia, tachycardia, atrial fibrillation)
  • Check for presence of sweating, increase in temperature, palmar erythema?
  • Onycholysis (separation of the nail from its bed)
  • Thyroid acropathy (similar to clubbing)
  • Ask the patient to extend arms and hold hands with palms facing downwards. Check for fine tremors.
    • Rest piece of paper over hands
  • Elicit Pemberton's sign
    • It is the development of facial flushing, distended neck and head superficial veins, inspiratory stridor and elevation of the jugular venous pressure (JVP) upon raising of the patient's both arms above his/her head simultaneously, as high as possible.


Examination of the thyroid gland:


Inspection:

  • Comment on symmetry, scars
  • Obvious thyroid enlargement?
  • Midline masses?
  • Ask the patient to swallow (only goiter or thyroglossal cyst rises upon swallowing)
  • Protrude the tongue (thyroglossal cyst moves with protrusion of tongue)
  • Comment on the mass
    • The 7 S's (BOX)
    • Distention
    • Discharge
    • Extension

Inspection 7 S's

  1. Site (anterior triangle)
  2. Size (3x3 cm)
  3. Shape (spherical, uniformly enlarged or nodular)
  4. Surface (smooth, rubbery, hard)
  5. Surrounding skin (normal, ulcers, sinuses)
  6. Scars (none)
  7. Subcutaneous veins (not)


Palpation:

  • Stand behind the patient
  • Thumbs on back of neck, patient's head slightly flexed
  • Palpate neck
  • Ask to swallow and feel the gland move under your fingers (Get below the swelling)
  • Palpate right lobe
    • Turn neck slightly to right
    • Ask to swallow
    • If palpable, describe size, shape, consistency, tenderness, mobility
      • Temperature à surrounding and then on lump
      • Tenderness
      • Texture
      • Trachea
    • Repeat for left lobe!
  • Lymph nodes palpation; also check Virchow's glands


Percussion:

  • From down upwards; check for retrosternal extension
  • Also percuss clavicle


Auscultation:

  • Bruit is a sign of increased blood flow; maybe present in thyrotoxicosis
    • Take breath in and hold while auscultating
    • Auscultate over two major lobes
    • Auscultate with bell
      • Also auscultate mitral area


Examination of the eyes:

  • Lid lag, lid retraction
  • Chemosis, Proptosis
  • Exophthalmos (examine from above & behind, from side. Eyes should not be visible beyond the supraorbital ridge)
  • Check eye movements (ophthalmoplegia); seeing double?


Miscellaneous:

  • Check reflexes
  • Proximal myopathy
  • Pretibial myxedema
  • CVS examination (failure?)
  • Internal carotid

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