Gastric Dilatation-Volvulus. What is it? GDV is when the dog’s stomach bloats and twists. This is...
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Transcript of Gastric Dilatation-Volvulus. What is it? GDV is when the dog’s stomach bloats and twists. This is...
Gastric Dilatation-Volvulus
What is it?
• GDV is when the dog’s stomach bloats and twists.
• This is a life threatening disorder.– Fatality rate ranges from 10% - 60%
• The bloating could come from:– Accumulation of:
• Air• Gas • Food• Liquid• Any combination of these
• When the stomach accumulates too much of one of these, it can start to distend.
• If severe enough, the stomach will flip over on itself. – This is called torsion
• Bloat usually leads to torsion, although torsion can happen without a bloat.
• Since the stomach is securely fixed only at one spot near the top, when the stomach is dilated, it can rotate on that one fixed axis.
• The stomach generally rotates in a clockwise direction and can rotate up to a maximum of 360 degrees.
• A less common rotation is counter-clockwise direction and can rotate up to 90 degrees.
• If the rotation is severe enough, it could mean the displacement of both the stomach and the spleen.
– In other words, they will switch places.
• After the stomach has twisted, it will cut off both the stomach contents and the blood supply.
– Blood vessels that feed the stomach are kinked and stretched as the stomach twists.
• Where the stomach has twisted, toxins start to build up in the dying stomach lining.
• The liver, pancreas, and upper small intestines may be damaged also.
• Shock can occur from the low blood pressure and endotoxins rapidly develop.
– Endotoxins- potentially toxic, natural compounds found inside pathogens such as bacteria.
• Sometimes the stomach will rupture, leading to peritonitis.
– Peritonitis- an inflammation of the membrane that lines the wall of the abdomen and covers the abdominal organs.
Causes of GDV
• The exact cause is unknown; however there are many theories.
– Gulping food down• When the dog eats too fast and swallows a lot of
air at the same time.
– Eating large meals in one sitting
– Drinking large amounts of water immediately after eating
– Vigorous exercise/work after a full meal.• Due to the extra stomach contents and the belly
swinging while full.
– Eating food that swells excessively when soaked in water.
– Certain food types such as:• Peas• Onions• Beans• Beet pulp
• There are also some medical problems such as:– Gastric fermentation (digestive disorder)
– The speed in which the stomach empties itself.
– The pace of the stomach’s digestive contractions.
What are the symptoms?
• Abdominal distention
• Abdominal pain
• Restlessness
• Depression
• Anxiousness
• Respiratory dysfunction
• Hypersalivation
• Belching
• Retching
• Frequent attempts to vomit
• Vomit foamy mucous
• Mucousy foam around lips
• Pale mucous membranes
• Lethargy
• Weakness
• Whining for no apparent reason
• Thumping sound on abdomen
• Can’t get comfortable
• Excessive panting
• Prolonged capillary refill time– >2 seconds
• Rapid heart rate – Greater than 120 bpm
• Rush dog to the vet, this is an EMERGENCY!!
What we do for it
• Decompress by placing a large bore needle or trocar catheter through the skin and muscle directly into the stomach.
• Attempt to pass a stomach tube.
• Place one or two large catheters and pump them with fluids and steroids for shock.
• X-rays, ECG, and blood tests.
– Treatment will probably start before all test results are in.
Ways to prevent it
• Feed multiple, small meals throughout the day.
• Add liquid to food before feeding.
• Restrict exercise an hour before and two hours after eating.
• Consider a bloat kit.– Contains the essentials needed to deal with a
bloat. Usually includes a rubber hose for each dog, tools needed for an emergency, and even a large bore needle to puncture your dog’s stomach, should help not be available in time.
• Use lubrication on the tube, if none available use water.
• Pass the tube down slowly and gently.
– Push it down an inch or so at a time, only after the dog has swallowed, without gagging, the section you have already pushed in.
• NEVER FORCE TUBE DOWN!!
– You can do severe damage to the internal organs.
• If the tube passage is unsuccessful due to internal obstruction, then it means that the stomach has probably twisted
• Improperly used may harm your dog even more.
• DON’T TAKE THIS LIGHTLY!!
• Gastropexy– This is a surgical procedure, but should be
done anytime a dog bloats or even preventively for breeds that are predisposed:
• The stomach is attached to the body wall to prevent twisting, or future episodes of volvulus.
• Recurrent volvulus can be pretty effectively managed with a gastropexy, but dilatation can still occur.
Just to know
• All the female working dogs leaving Lackland Air Force Base have had a gastropexy done. They do this during the spay surgery.
• People used to say that elevating the food bowl would help prevent GDV. Raising the bowl may actually increase the chance.
Case Study
• Dec 2006: Joop B021– Returned from deployment to Iraq one month
earlier (survived numerous IEDs)– Presented on emergency late at night with
severe bloat/GDV– Last check on dog was 4 hours prior to
presentation, MWD was fine at that time– CAN HAPPEN QUICKLY!!!!
Any Questions?