TL;DR: Feline dystocia is a life-threatening birth complication that requires immediate veterinary attention if more than two hours pass between the delivery of kittens.
What are dystocia and uterine inertia in cats?
- Dystocia is the medical term for a difficult birth, often occurring when the interval between births exceeds two hours.
- Uterine inertia happens when the uterine muscles stop contracting effectively, preventing the delivery of kittens.
- This condition can also be caused by physical obstructions, such as a kitten being incorrectly positioned in the birth canal.
Is feline dystocia a veterinary emergency?
- Urgency Level: High. If your cat has been actively straining or if it has been more than two hours since the last kitten was born, this is an emergency.
- A professional exam, including an ultrasound or X-ray, is the only way to safely distinguish a natural "rest phase" from a life-threatening complication.
- Delaying care increases the risk of losing unborn kittens and can lead to maternal infection, exhaustion, or death.
How does a photo help my veterinarian triage a difficult labor?
- Providing a clear photo of the mother’s rear area allows the medical team to identify abnormal discharge, such as dark green fluid or bright red blood.
- Visuals help the veterinarian determine if a kitten is partially visible or if the amniotic sac has ruptured.
- The photo assists the clinic in preparing for your arrival and deciding if an emergency C-section or immediate medical intervention is required.
Clinical Context (Merck Veterinary Manual)
Veterinary intervention is warranted if strong abdominal contractions persist for 1-2 hours without the passage of a kitten, if active labor lasts for 1-2 hours without delivery of subsequent kittens, or if there is a resting period during active labor exceeding 4-6 hours. Additionally, a veterinarian should be consulted if stage II labor does not result in vaginal delivery within 1-4 hours, or if the queen is in obvious pain. The presence of abnormal vulvar discharge, such as frank blood or dark green discharge before any neonates are born (indicating placental separation), also necessitates veterinary attention.
Chapter: Reproduction
Source: The Merck Veterinary Manual, 11th Edition (Page 1395)