Periparturient Arterial Ruptures in Mares
Arterial Rupture: a tear that occurs in anartery that leads to internal bleeding anddeath
Average of 34 died each year for 15 years in case study
Uterine artery most commonly affected area
Uterine tear can be anywhere along the uterine aretery
60% of ruptures within 20cm of artery origin
Symptoms
Typically occurs in older mares
Progressing restlessness,colic-like symptoms,
other signs of pain
Pale mucus membranes and showing signs of
shock
Abdomen containing mass amounts of blood
and blood clots
23% show no symptoms before death
Internal organs are pale
Past Health History
59% were barren within the past
year
Most mares hada mean foaling
history of 7 foals
14% had a history of Dystocia
Ruptures caused more because of
arterial weakeningand not trauma
from foaling
Age at which Mares are mostsusceptibility
Mean age of ruptures is 16.7 years
Mean age of uterine artery rupture is 18.9 years
30% of mares older than 15 years died from ruptures
Arterial ruptures tend to happen mostly in older mares
Spontaneous ruptures in older mares and previous injury to area in younger mares
highlighterruptures & Parturition
Of ruptures happened before parturition(average of 51 days prior to due date)
Of ruptures happened during parturition
Of ruptures 24 hours after parturition
Of ruptures happened 24 hours after parturtion
Of ruptures happened 24 hours after parturition
Most ruptures occur with parturition
Of ruptures happened 24 hours after parturition
61.3% of ruptures happen on side of
pregnant horn
Periparturient Arterial Rupture in Mares: Postmortem Study
By: Williams N.M and Bryant U.K (2011)
Information from:All
Infographic made by: Bianca Frank