Table 3.
Select echocardiographic measurements from structurally normal Borzoi and Borzoi diagnosed with equivocal, occult, and overt dilated cardiomyopathy.
| LVIDd (cm) | LVIDdN | LVIDs (cm) | LVIDsN | FS% | EF% | LA:Ao | |
|---|---|---|---|---|---|---|---|
| Normal (N = 85) |
4.4 (4.1–4.6) (N = 71) |
1.54 (1.41–1.62) (N = 71) |
3.0 (2.7–3.3) (N = 71) |
0.98 (0.90–1.04) (N = 71) |
30.1 (27.6–35.2) (N = 71) |
63.2 (54.9–67.6) (N = 23) |
1.2 (1.1–1.3) (N = 58) |
| Equivocal DCM (N = 4) |
4.3 (4.2–4.9) (N = 3) |
1.54 (1.53–1.74) (N = 3) |
3.6 (3.5–3.8) (N = 3) |
1.19 (1.18–1.24) (N = 3) |
17.8 (17.8–20.9) (N = 3) |
55.4 (N = 1) |
1.2 (N = 2) |
| Occult DCM (N = 7) |
5.0 (4.8–5.1) (N = 6) |
1.72 (1.71–1.74) (N = 6) |
4.1 (4.0–4.2) (N = 6) |
1.32 (1.30–1.37) (N = 6) |
17.3 (14.6–19.8) (N = 6) |
37.0 (32.0–40.9) (N = 4) |
1.3 (1.3–1.6) (N = 6) |
| Overt DCM (N = 2)* |
Dog 1: 6.9 | Dog 1: 2.23 | Dog 1: 6.0 | Dog 1: 1.81 | Dog 1: 12.3 | Dog 1: 33 | Dog 1: 2.1 |
| Dog 2: 4.1 | Dog 2: 1.58 | Dog 2: 3.5 | Dog 2: 1.26 | Dog 2: 14.2 | Dog 2: 37.2 | Dog 2: 2.3 |
Data are presented as median (interquartile range). The number of available measurements for each category is noted below the associated data.
Dog 1 with overt DCM was a 9.7-year-old male adult Borzoi and Dog 2 with overt DCM was a 5-month-old male Borzoi puppy. Necropsy of Dog 2 was consistent with DCM.
DCM, dilated cardiomyopathy; EF%, ejection fraction by Simpson's method of discs; FS%, fractional shortening; LA:Ao, left atrial to aortic root ratio; LVIDd, left ventricular internal diameter at end-diastole; LVIDdN, Left ventricular internal diameter at end-diastole normalized to body weight; LVIDs, left ventricular internal diameter at end-systole; LVIDsN, left ventricular internal diameter at end-systole normalized to body weight.