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Table 3 Modified Lown score for severity of ventricular arrhythmias found on ambulatory ECG (Holter) from T. cruzi positive, discordant and negative government working dogs

From: Selected cardiac abnormalities in Trypanosoma cruzi serologically positive, discordant, and negative working dogs along the Texas-Mexico border

  

Modified Lown Score*

Total dogs

0

1

2

3

4

5

Negative

18

13

4

0

0

0

1

Discordant

4

2

1

1

0

0

0

Positive

17

8

3

3

0

1

2

Total dogs

39

22

8

4

0

1

3

  1. *0- no VPCs; 1-single uniform VPCs; 2-bigeminy, trigeminy, or multiform VPCs; 3- accelerated idioventricular rhythm; 4- VPCs in couplets or triplets; 5- “R on T” phenomenon or ventricular tachycardia