by Elise M. Atkinson, CVT
GDV: A Silent Killer
Gastric dilatation is when a dog’s stomach fills with excess gas, fluid, or foam. A dog with gastric dilatation looks like it has swallowed a large balloon. Although it causes physical discomfort, this type of bloat doesn’t last long and may go away on its own.
A dog with gastric dilatation volvulus (GDV) also looks “inflated,” but after the stomach fills with gas, fluid, or foam, it turns or torses. When the stomach twists, it traps gas or food and may cut off the blood supply to the stomach tissues, causing part or all of the stomach to die. Surrounding tissues and organs may be affected as well. This is extremely painful for the dog and fatal if not treated immediately.
In fact, 30% of dogs that get GDV die before they can be seen by a veterinarian or don’t survive long enough to have life-saving surgery, according to Larry Glickman, VMD, DrPH, one of the researchers for a 2004 study conducted at Purdue University.
What Increases a Dog’s Risk for GDV?
Kara Tennant, DVM, of AAHA-accredited Caring Hands Animal Hospital in Bristow, Va., explains, “We still do not know the exact cause of bloat, but we are aware of certain risk factors that can increase a dog’s chances. The most common history is a large-breed dog that eats or drinks rapidly, then exercises.” In 2004, researchers at Purdue University reported five additional risk factors.
Chest size. Dogs with deep chests (such as Great Danes, Irish setters, rottweilers, and collies) are much more likely to develop GDV.
Raised food dishes. In the past, veterinarians recommended raising food dishes to shoulder height for large dogs. This was thought to prevent GDV, but the Purdue researchers found that the opposite is true. So throw those raised dishes away!
Genetics. Although there is a genetic link, most dog owners don’t have enough information about their dog’s genetic background to know if it is a factor.
Age. Older dogs are more likely to get GDV.
Gulping. Dogs that gulp their food face a two-fold threat. They quickly gulp large amounts of air with their food, and don’t know when to call it quits.
"Vomiting is the hallmark of bloat," Tennant says. Other possible signs of GDV include:
Dry heaves — retching without producing vomit
Excessive drooling
Restlessness — pacing, won’t lie down
Fast heart rate
Labored or distressed breathing — seems like an effort to breathe
Biting at stomach
Swollen stomach
Whining, grunting in pain
Reduce Your Dog’s Risk
Put your dog’s food dish on the ground; do not use raised food dishes.
Do not let your dog gulp food or water. There are food bowls made to slow down gulpers.
Consider preventive surgery to tack the stomach to the abdominal wall.
Divide your pet’s daily food into two or three meals.
Do not exercise your dog immediately before or after it eats.
What to Do If You Suspect Your Dog Has GDV
If your dog shows signs of GDV, seek emergency veterinary treatment immediately. When possible, call your veterinarian or the closest emergency clinic to let them know you are on your way and that your dog might have GDV.
Once you arrive at the hospital, every minute counts. Your dog may be going into shock and need to be stabilized. Your veterinarian will give your dog intravenous fluids, take X-rays, and relieve the pressure and gas either by passing a tube down your dog’s throat and into the stomach, or by piercing the outside of the stomach with a large needle.
Be prepared for your dog to go to surgery; it is the only way to be absolutely sure the stomach is untwisted and emptied. It also gives the surgeon a chance to inspect the stomach and surrounding tissues and organs for any damage. Your surgeon may also want to perform a gastropexy — a procedure where the stomach is sutured in place to prevent it from twisting again.
Following surgery, your dog will have to stay in the hospital for several days on fluids, antibiotics, and pain medication.
Never, Never, Never
Do not try to treat your pet for GDV without the help of a veterinarian. Many websites have information about bloat and some provide detailed instructions for how to tube your pet to relieve the gas in his stomach. Never do this. This procedure should only be performed by your veterinarian. If you are not a trained professional, you could easily pass the tube incorrectly and cause harm, or even death, to your dog.
© 2009 American Animal Hospital Association. All rights reserved.
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