Echo Calculator and Normal Ranges

Echo Calculator

This calculator is based on Cornell4 allometric scaling for dogs <70kg and gives the reference reference range for a given weight. Enter your patient’s body weight (in kilograms) in the box to reveal the reference range for M-mode measurements.


LVd (cm) LVs (cm) LVFWd (cm) LVFWs (cm) IVSd (cm) IVSs (cm) AO (cm) LA (cm)

Reference Tables for Normal Values

Normal Canine Echocardiographic Values – M-mode average (mean) and maximum-minimum values (95% prediction interval) in cm from Cornell4

Body weight (kg)LVIDdLVIDsLVPWdLVPWsIVSdIVSsAoLA
32.1
1.8-2.6		1.3
1.0-1.8		0.5
0.4-0.8		0.8
0.6-1.1		0.5
0.4-0.8		0.8
0.6-1.0		1.1
0.9-1.4		1.1
0.9-1.4
42.3
1.9-2.8		1.5
1.1-1.9		0.6
0.4-0.8		0.9
0.7-1.2		0.6
0.4-0.8		0.8
0.6-1.1		1.3
1.0-1.5		1.2
1.0-1.6
6 2.6
2.2-3.1		1.7
1.2-2.2		 0.6
0.4-0.9		 1.0
0.7-1.3		0.6
0.4-0.9		0.9
0.7-1.2 		1.4
1.2-1.8 		1.4
1.1-1.8
92.9
2.4-3.4		1.9
1.4-2.5		0.7
0.5-1.0 		1.0
0.8-1.4 		0.7
0.5-1.0 		1.0
0.7-1.3 		1.7
1.3-2.0 		1.6
1.3-2.1
11 3.1
2.6-3.7		2.0
1.5-2.7		0.7
0.5-1.0 		1.1
0.8-1.5 		0.7
0.5-1.1 		1.0
0.8-1.4 		1.8
1.4-2.2 		1.7
1.3-2.2
15 3.4
2.8-4.1		 2.2
1.7-3.0		 0.8
0.5-1.1		1.2
0.9-1.6 		0.8
0.6-1.1 		1.1
0.8-1.5 		2.0
1.6-2.4 		1.9
1.6-2.5
20 3.7
3.1-4.5		 2.4
1.8-3.2		 0.8
0.6-1.2		1.2
0.9-1.7 		0.8
0.6-1.2 		1.2
0.9-1.6 		2.2
1.7-2.7 		2.1
1.7-2.7
25 3.9
3.3-4.8		2.6
2.0-3.5		0.9
0.6-1.3 		1.3
1.0-1.8 		0.9
0.6-1.3 		1.3
0.9-1.7 		2.3
1.9-2.9 		2.3
1.8-2.9
30 4.3
3.5-5.0		2.8
2.1-3.7		0.9
0.6-1.3 		1.4
1.0-1.9 		0.9
0.7-1.3		1.3
1.0-1.8		2.5
2.0-3.1		2.5
1.9-3.1
354.4
3.6-5.3 		2.8
2.2-3.9		1.0
0.7-1.4 		1.4
1.1-1.9 		1.0
0.7-1.4 		1.4
1.0-1.9 		2.6
2.1-3.2 		2.6
2.0-3.3
40 4.5
3.8-5.5		3.0
2.3-4.0		1.0
0.7-1.4		1.5
1.1-2.0 		1.0
0.7-1.4		1.4
1.0-1.9		2.7
2.2-3.4 		2.7
2.1-3.5
50 4.8
4.9-5.8		3.3
2.4-4.3		1.0
0.7-1.5		1.5
1.1-2.1		1.0
0.7-1.5		1.5
1.1-2.0		3.0
2.4-3.6 		2.9
2.3-3.7
60 5.1
4.2-6.2		3.5
2.6-4.6		1.1
0.7-1.6		 1.6
1.2-2.2		1.1
0.8-1.6		1.5
1.1-2.1		 3.2
2.5-3.9		3.1
2.4-4.0
70 5.3
4.4-6.5		3.6
2.7-4.8		1.1
0.8-1.6		1.6
1.2-2.2		1.1
0.8-1.6		1.6
1.2-2.2 		3.3
2.7-4.1 		3.3
2.6-4.2

Breeds With Specific Reference Ranges available

Breeds with specific ranges available (generally for M mode, not for all measurements, take care as populations are not uniform across the world) see Cerbu et al29 for a summary table of these breeds with measurements. Sight hounds and working spaniel breeds tend to have large, lazy hearts.

  • Afghan
  • American Staffordshire Terrier
  • Beagle
  • Border collie
  • Boxer
  • Cavalier King Charles Spaniel
  • Chihuahua
  • Dachshund
  • Doberman Pinscher
  • Dogue de Bordeaux
  • English Bull terrier
  • English Cocker Spaniel (small numbers)
  • English Pointer
  • English Setter
  • French Bulldog
  • German Shepherd
  • Golden Retriever
  • Great Dane
  • Greyhound
  • Hungarian Vizsla
  • Irish Wolfhound
  • Italian Greyhound
  • Labrador Retriever
  • Maltese dog
  • Miniature poodle (small numbers)
  • Newfoundland
  • Pug (small numbers)
  • Saluki
  • Toy Poodle
  • Welsh Corgi (small numbers)
  • Whippet