Table 1.
Dog characteristics and conventional echocardiographic variables for 1020 CKCS allocated according outcome in 2013
| Variable | n | Alive (1) | Cardiac death (2) | Non‐cardiac death (3) | Lost to follow‐up (4) |
|---|---|---|---|---|---|
| Number of CKCS | 1020 | 618 | 74 | 214 | 114 |
| Age at examination (days) | 1020 | 640 (571;749) | 745 (603;914) | 726 (597;863) | 650 (563;844) |
| Sex (f/m) | 1020 | 404/214 | 41/33 | 137/77 | 72/42 |
| Color (bh, bt, rb, tri) | 1020 | 217/146/124/131 | 30/11/10/23 | 84/31/33/66 | 42/17/23/32 |
| BW (kg) | 1020 | 8.2 (7.3;8.3) | 8.4 (7.4;9.6) | 8.2 (7.4;9.3) | 8.4 (7.2;9.6) |
| MR (no/mild/mod‐se/int) | 1015 | 282/200/63/72 | 15/27/16/14 | 70/83/23/36 | 41/38/24/11 |
| MVP (0/1/2) | 1017 | 68/430/119 | 16/42/16 | 26/155/32 | 9/78/26 |
| Murmur (0/>0/f) | 1020 | 570/11/37 | 57/11/6 | 164/18/32 | 92/7/15 |
| Heart rate (beats/min) | 968 | 120 (102;144) | 120 (102;132) | 114 (102;132) | 120 (102;141) |
| LA/Ao | 1002 | 1.2 (1.1;1.3) | 1.2 (1.1;1.2) | 1.2 (1.1;1.2) | 1.1 (1.0;1.2) |
| LVIDDN | 1015 | 1.5 (1.4;1.5) | 1.4 (1.3;1.5) | 1.4 (1.3;1.5) | 1.4 (1.3;1.5) |
| LVIDSN | 1015 | 0.9 (0.9;1.0) | 1.0 (0.9;1.0) | 0.9 (0.8;1.0) | 0.9 (0.8;1.0) |
| LVPWD | 1015 | 0.7 (0.6;0.8) | 0.7 (0.6;0.8) | 0.7 (0.6;0.8) | 0.7 (0.6;0.8) |
| FS (%) | 1015 | 32.7 (28.6;36.3) | 30.6 (27.6;36.0) | 32.4 (28.3;37.1) | 32.4 (28.0;37.7) |
| h/R | 1015 | 0.5 (0.5;0.6) | 0.5 (0.5;0.6) | 0.5 (0.5;0.6) | 0.5 (0.5;0.6) |
BW, body weight; CKCS, Cavalier King Charles Spaniels; color, coat color where bh, blenheim; bt, black and tan; rb, ruby, tri, tricolor; FS, fractional shortening; h/R, LV posterior wall thickness relative to internal diastolic radius; LA/Ao, ratio of left atrium to aortic root; LVIDDN, left ventricular end‐diastolic diameter normalized for BW; LVIDSN, left ventricular end‐systolic diameter normalized for BW; LVPWD, left ventricular free wall thickness in diastole; MR, mitral regurgitation group where no = no (0%), mild, mild (<20%), mod‐se, moderate‐severe (20–100%), int, intermittent (most often mild MR but some MR jets ≥ 20%); MVP, mitral valve prolapse group where 0 = ≤1 mm total MVP, 1 = 2‐4 mm total MVP, 2 = ≥5 mm total MVP; murmur, mitral regurgitation murmur intensity group where 0 = no murmur, >0 = murmur 1–6, f = flow murmur. Values reported are median and interquartile ranges.