Ultrasound (main)

AAA

• Measure outer wall to outer wall from diaphragm to bifurcation
  • Will avoid being fooled by an intramural thrombus
  • Scan in both transverse and longitudinal axes
  • Normal is <3cm

Cardiac

• Normal aortic root is <3.8 cm (parasternal view w/ dot pointing to Lt arm)

IVC

• Measure ~2cm from IVC/RA junction

IVC	% Collapse during inspiration	CVP
<1.5cm	>50%	0-5
1.5-2.5cm	>50%	5-10
1.5-2.5cm	<50%	10-15
>2.5cm	Little phasicity	15-20

Renal

• Is there hydronephrosis?
  • Unilateral or bilateral?
• Is there fluid around the kidney?
• Is the bladder distended?
• Are stones seen?
• Is the aorta normal?

Pelvic

• Definite IUP = gestational sac containing yolk sac
  • Occurs ~5th week

Ocular

• Optic Nerve
  • Measure 3mm posterior to the globe
  • Normal is <5mm

Source

Sonoguide