Bloat & GDV.

What bloat is

"Bloat" covers two things that often happen together. The first is gastric dilatation — the stomach fills with gas and distends. On its own, this is serious.

The second is volvulus: the distended stomach rotates on its own axis, sealing both ends. Gas can no longer escape. The blood supply to the stomach and spleen is cut off, the tissue begins to die, the swelling presses on the major veins returning blood to the heart, and the dog goes into circulatory shock. This is gastric dilatation-volvulus, or GDV, and it is one of the few true "minutes count" emergencies in veterinary medicine.

Great Danes are the highest-risk breed in the world for it. The reason is anatomical: a deep, narrow chest gives the stomach room to swing and rotate. Nothing about temperament, feeding or care changes that underlying shape.

A dog in GDV that reaches surgery in time has roughly an 80% survival rate. A dog that does not reach surgery dies, usually within six to twelve hours of the first sign, sometimes much faster.

The signs — memorise these

Classic GDV is unmistakable once you know it. The problem is that the first thirty minutes look like mild stomach upset, and that is the half hour in which you need to act.

Later signs mean the dog is already in shock and time is nearly gone:

• Pale or white gums — press a gum with your thumb; the colour should return in under two seconds
• Rapid, shallow breathing and a fast, weak pulse
• Weakness, staggering, or collapse
• Whining or crying when the belly is touched

What to do, in order

1. Phone the nearest 24-hour emergency veterinary hospital now. Say the words "I have a Great Dane and I think he is bloating." That sentence gets a team prepared before you arrive.
2. Put him in the car and go. Do not wait for a callback, do not wait to see if it settles, do not try your regular vet if they are closed.
3. Give nothing by mouth. No water, no food, no anti-gas medication, nothing.
4. Do not induce vomiting. It cannot help and it can make things worse.
5. Keep him as still and calm as you can on the journey. Have someone else drive if possible.
6. Authorise the X-ray immediately. A single right-lateral radiograph distinguishes dilatation from volvulus in minutes.
7. Expect to consent to surgery. Confirmed GDV means decompression, untwisting, assessment of the stomach and spleen, and a gastropexy in the same operation.

Do this today, before you need it: put the address and phone number of your nearest 24-hour emergency hospital on your fridge and in your phone. Drive the route once so you know it. Most people have never needed an out-of-hours vet and discover at 2am that they do not know where one is.

Gastropexy — the one real prevention

A prophylactic gastropexy is a surgical procedure that tacks the stomach wall to the inside of the body wall. The stomach can still distend with gas — but it cannot rotate. It converts a near-certainly-fatal emergency into a serious but survivable one.

Studies put the reduction in GDV-related death at well over 90%. For a breed with a one-in-four lifetime risk, that is an extraordinary return.

• When: most commonly at the same time as spay or neuter, typically 12–24 months in a giant breed. Doing it in one anaesthetic saves cost and recovery.
• How: laparoscopically (two small incisions, faster recovery, more expensive) or open. Both work.
• Cost: roughly $500–$1,500 as an elective, against $3,000–$8,000 for emergency GDV surgery — assuming the dog survives to have it.
• Risk: it is routine abdominal surgery with the normal anaesthetic risks, and nothing more.

Reducing the risk day to day

None of this is as effective as a gastropexy, and none of it is a substitute for recognising the signs. But the evidence supports all of it.

• Feed two or three smaller meals a day, never one large one. A single big meal is a clear, well-documented risk factor.
• Slow him down. A slow-feeder bowl or a puzzle feeder reduces how much air he swallows with his food. Rapid eating is a known risk factor.
• No strenuous exercise for an hour either side of a meal. Gentle walking is fine.
• Do not use a raised bowl. This is a genuine reversal: raised feeders were recommended for decades, and the large Purdue studies found they increase GDV risk in giant breeds. Feed at floor level.
• Avoid very large volumes of water at once immediately after exertion. Offer water constantly instead, so he never gulps.
• Keep stress low around food. Feed a multi-dog household separately — competitive eating means fast eating.
• Watch the fat content. Foods listing fat or oil in the first four ingredients are associated with higher risk.
• Know the family history. A first-degree relative that has bloated raises the risk substantially. We tell you if there is any in your puppy's line.

Myths worth dropping

• "Raised bowls prevent bloat." The opposite. Old advice, overturned by research, still repeated in pet shops.
• "Only dry food causes it." Food type matters far less than meal size, eating speed and the dog's build.
• "Soaking kibble prevents it." No good evidence either way. Harmless, not protective.
• "He'll burp it out." Once the stomach has rotated nothing can escape. Waiting is how dogs die of this.
• "Simethicone will fix it." Over-the-counter anti-gas products do nothing for GDV and delay the only treatment that works.
• "It only happens to old dogs." Risk rises with age, but young adults bloat too. Ours are pexied before two.