From the Editor:
North Texas Irish Wolfhound Club Address
NTIWC
C/O Cherry Rolle
5250 Banks Road
Ft. Worth, TX 76140-7900
Club Officers:
President, Cherry Rolle
817-516-0994
Email: Cherryr1@airmail.net
Secretary, Marianne Litle
214-361-1467
Treasurer, Paul Stout
817-237-0072
Email: paul42@earthlink.net
IW Rescue,
Cherry Rolle 817-516-0994
Ann Sury 214-328-2682
Newsletter Editor, Lesa Newbitt
940-433-5951
Email: beteroniw@wccs.net
Hello Everyone!
Well, I'm afraid it has been a long while since we saw our last issue of the
newsletter. To our patient club members, sincere apologies. Many things have
happened this past year, and those who had generously volunteered for the
task, have become too busy to devote the required time. So, I have volunteered
to fill in. All right... QUIT that *moaning* 'cause I can just hear YOU. <G>
Due to the lapse of time, between publications, I'm afraid this is a rather
lengthy issue, and still, I was forced to leave some information I had hoped
to include here, for the next issue.
As the cost for printing the newsletter (in color) has simply become too
high, we will now be printing it in black and white. I know this will be
a disappointment and that we have all become accustomed to seeing it in
color which has been really nice because of the photos, however, as we are
a small membership we feel our limited funds are best utilized for our IW
rescue. Jeniffer Johnson, who generously set up our club website (at no
charge to the club) some time ago, has agreed to post the most recent issue,
of the newsletter, on the NTIWC website. So, if you enjoy seeing the photos,
etc., in color, and have access to a computer, you may also access it there.
The NTIWC website URL is: http://ntiwc.offlead.com/
In all honesty, at this point, we are really debating if it is necessary
to continue mailing a printed copy with so many folks having computers these
days. If you absolutely do NOT have access to a PC, PLEASE let me know.
I will keep a list and in the event we do discontinue mailing them, I will
make certain those of you who do not have access to a PC continue to get
a hard copy. Incidentally, for those of you who respond, via e-mail, I will
assume that you actually DO have access to viewing it online. <G>
If you have any show brags, announcements, articles, or photos
of interest, you would like to see included in our newsletter, please send
them to me via e-mail, or snail mail.
Mailing address is:
Lesa Newbitt
1794 CR 4698
Boyd, TX 76023
Our NTIWC Annual picnic will be held in Grand
Prairie, at the home of Doug & Melanie Gulley. As soon as details for
the date & time are confirmed, Cherry will mail out separate fliers
with the information, along with driving directions. We usually try for
sometime in Oct., but this will depend on what is convenient for our hosts.
Also, Celtic Heritage Festival, (in Bedford,
at the Boy's Ranch) will be held on Oct. 8th & 9th, this year. Cherry
will also mail out a flier with details for this as the time nears.
New Membership Rosters are also in the works,
as we speak. We have quite a few new members and some address changes, so
Cherry is working on the new updated list and will be mailing these out
shortly.
New Club Members please send me a bio, if you
would like to introduce yourselves and your hounds, in an upcoming newsletter
issue. Photos are welcome too. I would love to feature you!
Beating Bloat
An Analysis Of Risk And Prevention
by SHARON PFLAUMER
Published in Dog World Magazine April 2000 issue.
It's an owner's nightmare: returning home or waking up to find a beloved
pet has died of gastric dllatation-volvulus, or bloat and torsion as it
more commonly is known, an agonizing condition that can strike suddenly
and fatally. Sadly, for many owners this night- mare has become a traumatic
reality.
Dogs that succumb to the condition suffer immense pain and an obscenely
distended abdomen that can grow to as large as a beach ball. They exit this
world too early and too jarringly, and they leave their owners feeling helpless
and confused. As new research emerges, however, owners may be able to fend
off the fatal grasp of bloat and torsion and take steps to minimize the
risks to their dogs.
Bloat is a condition in which there is a rapid accumulation of air in the
stomach causing dilatation. Volvulus, or torsion, occurs when the dilated
stomach twists, cutting off contact with the esophagus at one end and the
small intestine at the other. This effectively isolates the stomach and traps
the air.
The very enlarged, twisted stomach puts pressure on the blood vessels,
often twisting them in the abdominal cavity and thus impairing blood flow
back to the heart. Because the heart receives an insufficient amount of
blood to pump, blood flow decreases to the rest of the body. With this,
there is the fairly acute onset of death of the tissues that are deprived
of oxygen, including the stomach wall itself, which rapidly undergoes necrosis.
The early signs of bloat include discomfort. The dog paces or repeatedly
gets up and then lies back down. There also is excessive salivation, panting
and unsuccessful attempts to vomit. As the condition worsens, the abdomen
distends in most, but not all, dogs and feels taut like a drum. Shock follows
(i.e., pale gums, weakness, shallow pulse, cool extremities, etc.). Often,
dogs then go into a coma, and death is the ultimate outcome if they are
untreated.
Uncovering Etiologies
Given that GDV is one of the leading causes of death in giant and large
breeds, one would expect that much research into the cause of this pervasive
killer would be under way. Yet, Larry Glickman, V.M.D., Dr.PH., a veterinary
researcher at Purdue University's School of Veterinary Medicine, presently
is one of the only researchers pursuing this area of study. According to
him, other groups currently researching the condition typically focus on
Its treatment, not its cause.
Before beginning a career in teaching and research at Purdue, Glickman
held faculty appointments at the Cornell and University of Pennsylvania
schools of veterinary medicine. He is a pioneer in the application of epidemiologic
methods to the study of pet dogs (e.g., he was the first to demonstrate
that certain breeds are more susceptible to parvovirus infection; that high-fat,
high-protein, low-carbohydrate diets are associated with significantly improved
survival rates in dogs with breast cancer; and that exposure to asbestos
and insecticides increases the 5Q risk of lung and bladder cancers, respectively,
in dogs). He received the Pfizer Research Award for Research Excellence
and the Ralston Purina® Small Animal Research Award, and he has authored
more than 175 scientific articles, book chapters and monographs on canine
health. Glickman presented some of the findings from his most recent "Five-Year
Purdue University Prospective Study of Gastric Dilatation-Volvulus"
at the Canine Health Conference held in St. Louis in October 1999 and sponsored
by the American Kennel Club Canine Health Foundation. The purpose of the
study was to isolate risk factors in order to identify the environmental
situations and characteristics of dogs that make them more susceptible to
the condition.
"We followed nearly 2,000 dogs belonging to 11 breeds for up to five
years to determine which ones would develop bloat and which ones would not.
Then, we related that data back to things like their breed, size, shape,
personality, age, genetics, diet and how they were managed," he explains.
The study was a two-part risk analysis performed at the breed and individual
dog levels. At the conference, Glickman reported on the first part, the
breed analysis findings, which are complete, but reported only the preliminary
findings of the second part, the individual dog risk factors, which still
are being analyzed at the time of this writing.
Analysis At The Breed Level
"In the first part, we tried to look at breed-related risk factors,"
Glickman explains. "That is, characteristics that would put a breed
per se at higher risk than any other breed in the study." The large-breed
dogs in his research were characterized as weighing between 50 pounds and
99 pounds at adult weight, arid the giant-breed dogs were characterized
as weighing greater than 99 pounds at adult weight. (Smaller breeds were
not studied because, for the most part, they are not largely affected by
bloat.) The 11 breeds included in the study - chosen because they were known
to be at high risk - were the Akita, Bloodhound, Collie, Great Dane, Irish
Setter, Irish Wolfhound, Newfoundland, Poodle (Standard), Rottweiler, Saint
Bernard and Weimaraner. Dogs were measured at AKC shows. On the breed level,
the following characteristics were analyzed:
BREED SIZE
In terms of breed risk factors, Glickman found the incidence of bloat was
high and almost identical in both the giant and large breed dogs in the
study. The actual incidences of bloat in both the large and giant breeds
were 23 and 26 cases, respectively, per 1,000 "dog years" at risk.
(Each dog followed for one year represented one "dog year" at
risk. Thus incidence rates were expressed in terms of 1,000 "dog years"
at risk.) Out of the more than 1,900 dogs in the study, a total of 105 developed
bloat. Their fatality rate was 29 percent. The breeds at highest risk in
the study were the Great Dane (a giant breed), with a cumulative incidence
rate of 15.7 percent, and the Bloodhound (a large breed), with a cumulative
incidence rate of 8.7 percent. To figure lifetime rate of incidence, Glickman
took observed incidence rates for the different breeds and made the assumptions
that the average life span Is 10 years for the large breeds and 8 years
for the giant breeds. He then calculated what the lifetime risk of bloat
would be for these breeds. For the large breeds, it was 23 percent; for
the giant breeds, 26 percent. In the case of the Great Dane specifically,
it was 42 percent! That means more than four out of 10 Great Danes will
bloat in their lifetimes. Of those that do, about one-third will die.
BREED SHAPE
According to Glickman, it's not just a breed's size that influences the
rate of bloat, however. As the breed analysis also revealed, "Breeds
that have a deeper and narrower abdomen are at greater risk, with the abdomen
depth/width ratio being a much stronger predictor than the-chest depth/width
ratio for breeds. We think that the deeper and the narrower the abdomen,
the greater the room for the stomach ligaments to stretch down or lengthen
as part of the aging process. The deeper abdomen provides more room for
the stomach to actually descend with age. The combination of stretched ligaments
and greater room allows the stomach to twist." (See the section below
on aging.) Glickman says the fact that smaller breeds with deep, narrow
abdomens have a higher incidence rate of bloat further supports the correlation
of the abdomen depth/ratio and increased risk. "The only breeds of
lesser size with a fairly high Incidence of bloat are Basset Hounds and
Basset Hound shaped breeds [including Dachshunds]. Compared to the size
of the dog, they have a very deep, narrow abdomen."
Study findings also revealed the risk of bloat sometimes markedly differs
between two breeds of roughly the same size. Glickman believes this is due
to the difference in their shape. "Compare the setters -- Irish and
English -- to the retrievers -- Golden and Labrador. Here are two breed
types that are roughly the same size, yet, the setters have a much higher
incidence. Setters have a very deep, narrow abdomen, while retrievers have
a shallower, wider abdomen."
TEMPERAMENT
Interestingly, personality also turned out to be a major predictor of bloat
at the breed level. Glickman explains, "We asked each individual in
the study to rate their dog on a scale of I to 10 for things like aggressive
to people, aggressive to dogs, submissive to people, submissive to dogs,
excitability, fearfulness, happiness, trainability and whether the dogs
are easily upset by strangers or new situations. We took the average score
for each of these characteristics. Then, we looked at the relationship between
the scores and the risk of bloat for the breed as a whole. Two clear trends
emerged. First, the more fearful the breed, the higher the risk of bloat,
and second, the more happy and easygoing the breed, the lower the risk."
According to Glickman, it's not the amount of stress per se in a dog's
life that is significant, but the way in which the animals body reacts to
it. That reaction is mediated by personality. "This is an important
distinction because clearly there is nothing we can do about stress,"
Glickman says. "All animals are stressed at times just as people. What
is significant, though, is that a happy individual, whether a person or
a dog, is less influenced by stressful situations than a highly anxious,
fearful one."
Differing responses to stress might influence the risk of bloat for the
following reason. "When animals are placed under stress, there are
certain stress hormonal and neural responses. Some of these responses clearly
affect gastric motility. A fearful dog may have a very different response
physiologically to stress than a happy, easygoing dog. We think those physiological
responses may contribute to the rotation of the stomach because of the motility.
This is the second or third time we have demonstrated temperament -- particularly
easygoingness or fearfulness -- is related to the risk of bloat," Glickman
reports.
(Note: There were significant differences among the breeds in the study
in terms of how the owners scored them for happiness/fearfulness. In addition,
Glickman reports that even within breeds, there was variance of owner response;
the scores represent averages. See the sidebar "The "Happiness'
Score" for specific rankings.)
AGING
Although dogs of all ages were included in the study, in general, Glickman
found the Incidence of bloat increased with advancing age. "Bloat is
like many other diseases seen in dogs," he explains. "While it
can occur at any age, generally, it is a disease of aging most commonly
seen in older animals. That means we have to think about how bloat ties
into the aging process (i.e., the aforementioned stretching or lengthening
of the stomach ligaments)."
Breed-level analysis revealed the incidence of bloat in large-breed dogs
started to increase dramatically at 3 years of age. In giant-breed dogs,
that Increase with age started much sooner -- as early as 6 months of age.
Given that bloat is a disease of aging, Glickman says these findings were
predictable because giant-breed dogs age faster than do large-breed dogs
and, therefore, don't live as long.
GENETICS
Given the findings of this and previous studies, Glickman does not believe
bloat is genetically based in the sense that one gene is responsible for
causing it. "We're dealing with a complex condition where several genes
interact to produce bloat. For example, things like size, shape and personality
have a genetic basis. After all, what is conformation but genetics? What
is personality but genetics? My own overview of what's happening and where
I think all of this is leading in both this study and in other studies is
that, rather than a particular gene causing the condition, certain inherited
characteristics predispose breeds or individual dogs to bloat."
Individual Dog Analysis
At the breed level, Glickman compared factors that differed among the 11
breeds in the study. "In the second part, we looked at individual dogs
to see why those dogs were at increased risk compared to other dogs in the
study," he says.
A lot more data were collected at the individual dog level because, as
mentioned earlier, there was a total of more than 1,900 dogs in the study.
Eighty-seven percent of their owners completed questionnaires, so detailed
information was obtained on more than 1,600 dogs.
Risk factors analyzed in the individual dog level portion of the study
included characteristics such as gender, neutering and spaying, weight,
belching and flatulence, speed of eating and genetics; and environmental
factors such as housing, travel, vaccination, restriction of water and exercise
around mealtime, use of elevated food bowls, moistening food, giving preventive
medications and number of meals fed. The following outlines some of the
results:
GENDER
Individual dog level analysis con- firmed there is only a minimal difference
in the risk of bloat between males and females. Males in the study had only
a 14 percent higher incidence than did females.
NEUTERING AND SPAYING
Likewise, neutering did not emerge as an important factor influencing the
risk of bloat in the study.
WEIGHT
Weight, on the other hand, did prove to be significant. "We have consistently
found, and have been able to replicate it in this study, that dogs characterized
by their owners as chronically underweight are at higher risk than dogs
characterized as average weight or even overweight," Glickman notes.
"This is a very important finding now that we've seen it for the third
or fourth time. It suggests that, while bloat occurs acutely in dogs that
show no previous indications they will bloat, these dogs may, in fact, have
problems with their gastrointestinal tract long before they bloat, which
may explain why they're chronically thin. A lot of factors point to the
fad that there may be related, underlying problems within the UI tract that
are manifested as doing poorly in terms of weight gain. Or it may simply
be because they're fearful. It's hard to put weight on fearful dogs."
DIET
The Individual dog analysis also looked at the different types of food
(e.g., canned, dry, semi-moist and table scraps) fed to the Individual dogs
In terms of the amount, brand, specific ingredients, fat preservatives used,
fat sources used, kibble size, etc. Study participants reported more than
150 types of food being fed. Due to the magnitude of collecting information
on such a large number of foods, the diet analysis is not complete at present
but will be forthcoming shortly.
SPEED OF EATING
Although specifics about the contents of diets still are being considered,
Glickman did find in this study, as he had in previous studies, that the
faster the dog ate, the greater the risk of bloat. He believes the increased
risk may be related to gulping air while eating, which is one theory as
to bloat's cause. The fact that many dogs that bloat do not do qo immediately
after eating seemingly contradicts this, however.
"One of the most confusing things in studying bloat is trying to determine
why the stomach fills and distends so rapidly," Glickman elaborates.
"We used to think food was the cause. Now we know most bloat does not
occur immediately after eating. In another study, we found that 70 percent
of bloat cases occur late at night or early in the morning.
"We also now know that what's in the stomach is air, which can only
come from one place. It has to be ingested or gulped. So, the issue becomes
what causes some dogs to ingest large amounts of air and others not to.
This suggests there is some underlying problem that does not just occur
during an acute episode, but that happens repeatedly and that may be exacerbated
by temperament. That is, dogs that don't cope well gulp air."
Gllckman's next study, which he already has begun and is funded by the
Collie Club of America, will be a replication of a study done in Europe
five years ago (F.J. Van Sluijs and W.T.C. Wolvekamp, "Abnormal Esophageal
Motility in Dogs with Recurrent Gastric Dilatation-Volvulus," abstract,
Vet Surgery, Vol. 22, No. 252, 1993). The European study found that the
vast majority of dogs that have repeated episodes of bloat have defects
in their swallowing mechanism. That is, when they swallow food, it doesn't
flow as it should from the mouth to the stomach. In order to get the food
to flow, the dogs have to gulp air to force it down.
"So far, we've only tested two dogs," he notes. "Both already
had an episode of bloat and, it turned out, both had swallowing defects.
For the first time, we may have some clues as to what the primary physical
defect may be in terms of allowing this rapid intake of air. What we hope
to do in the near future is to offer owners of dogs at high risk a test
to determine if their swallowing mechanism is defective. The test would
be done by giving the dog a bowl of barium-coated food and following the
progression of the food through the esophageal tract with a procedure called
fluoroscopy. This will allow us to determine if the dog needs to swallow
air in order to get the food down. If we can demonstrate this in the study,
then we should be able to identify the dogs at highest risk."
GAS
Tangent to the risk associated with eating rapidly and gulping air is the
influence of gas in the gastrointestinal tract. "We also asked owners
to characterize their dogs in terms of flatulence and belching to see if
they were associated with increased risk of bloat," Glickman explains.
"In fact, both were. In dogs that belch often, there was about a 60
percent increased risk of bloat. In dogs that had flatulence often vs. rarely,
there was about a 20 percent increased risk. Dogs that had abdominal distension
after eating regularly had about an 80 percent increased risk"
Glickman explains that if bloat/torsion is caused by the excessive swallowing
of air, which he believes it is, then what is being passed orally (belching)
or per rectum (flatulence) may be air and not gas. The fact that belching
and flatulence may be more common in dogs that had bloat/torsion is perhaps
because the same mechanism that leads to GDV also leads to belching and
flatulence. In this case, he explains, there would be an association between
belching/flatulence and GDV, but no causal relationship.
GENETICS
In the Individual dog analysis, having a first-degree relative that bloated
turned out to be one of the strongest predictors. In fact, dogs with such
relatives had a three- and four-fold increased risk of developing bloat.
A first-degree relative was defined as either a parent, sibling or offspring,
In other words, dogs that shared 50 percent of the gene pool.
Glickman believes grandparents that bloated also indicate risk. Pedigree
analysis is difficult, however, because bloat is a disease of aging that
may not manifest until a dog is 7 or 8 years old. Because of this, animals
have to live almost their whole lives before bloat in the pedigree could
be known. By that time, people often have lost track not only of grandparents,
but parents and siblings as well.
Although getting complete family pedigrees with respect to bloat would
be a difficult undertaking, Glickman believes doing so would be of great
value. "Pedigree analysis would give us tremendous information about
the specific mode of inheritance that we can't get just by asking about
first- degree relatives," he says.
MANAGEMENT
In terms of environmental risk factors, which included management, the
individual dog analysis looked at things such as how the animals were housed,
if they travelled, the frequency of vaccination, etc. None of these appeared
to be associated with an altered risk of bloat. However, the study did reveal
an increased risk of bloat associated with things such as restricting exercise
before and alter eating, restricting water before and after eating, giving
preventive medications, moistening the food and raising the bowl's height.
These findings were of great interest to Glickman because, until now, these
measures commonly were thought to be preventive.
To further clarify these seemingly contradictory findings, Gilckman compared
the rate of use of these preventive measures in dogs that had a first-degree
relative that bloated and in those that did not. He found that these practices
more commonly were used by owners with dogs at high risk. Glickman then
further analyzed the data to determine whether these practices are associated
with bloat simply because the owners accurately had identified the high-risk
dogs ahead of time, or if they actually were harmful or had no effect.
Prior to this last step in his analysis, his gut feeling was that all these
practices probably would prove to have no effect. Indeed, his "final
analysis shows that this is correct - except for raising the food bowl,
which does appear to increase the risk of bloat; the higher the bowl, the
higher the risk." Glickman says the elevation may be causing an increased
incidence of aerophagia (excessive swallowing of air), which could account
for the higher risk.
MEAL FREQUENCY
Another commonly recommended measure for preventing bloat is feeding smaller,
multiple meals. This procedure's effectiveness was horn out by the individual
analysis part of the study. "In previous studies, we showed that as
the number of meals fed per day increases, the risk of bloat decreases.
We found the same thing in this study. If you take that to the fullest,
then free-feeding should be best. We don't have the data to support that
conclusion, however, because we don't have enough data on free-feeding in
any of these studies to look at it by itself, since free-feeding is not
commonly done with large- and giant-breed dogs." Glickman believes
the link between feeding multiple meals and a lower incidence of bloat may
be related to less distension of the stomach with smaller meals.
Lowering The Risks
After reviewing the results of Glickman's study, if you believe your dog
may be in the high-risk category, there are steps you can take to actively
reduce the chances of bloat/torsion. Glickman makes the following preliminary
recommendations based on what already is known:
- Don't breed a dog if a first-degree relative has suffered an episode
of bloat.
- Consider a prophylactic gastropexy for dogs that fit the high-risk profile.
(Note: Prophylactic gastropexy should be performed only if the dog already
is neutered or will be neutered at the time of gastropexy. Breeders who
prevent high-risk dogs from bloating by opting for this surgery, but then
continue to breed the dogs mask the problem and destroy their selection
criteria in a breeding context. For more in- formation on this procedure,
see the sidebar, "Emergency Treatment And Prevention.")
- Owners who have dogs that eat rapidly should do anything they can to
slow the speed of eating. Owners in the study suggested all sorts of methods,
some of which were quite effective. The most common and most effective
strategy was to place a large object that the dog had to eat around in
the food bowl. The object that worked best, although it sounds a little
unusual, was a heavy chain with big links. Unlike a rock, which the dog
can push out of the way, a heavy link chain forces the dog to eat under
and around it.
- Owners of anxious or fearful dogs should consider behavior modification.
A growing number of animal behaviorists and veterinarians know how to
intervene with these dogs. In some instances, drug therapy also may be
warranted.
- Feed smaller, multiple meals instead of one large meal per day.
- Do not elevate the food bowl.
After his analysis of the study's results is complete, Glickman will make
dietary recommendations based on types of feed if they are indicated.
Glickman believes the greatest value of this study is that it is prospective.
"That means we collected all the information on the animals before
we or the owners ever knew which ones would develop bloat and which would
not," he explains. "Thus we and the owners were totally unbiased
in the way in which the information was collected.
"This is very different from all the other studies that have been
done up until now. They took dogs that had already bloated and dogs that
had not bloated and then went back and asked owners how they managed the
dogs. Of course, owners of dogs that bloated remembered things much differently
than owners of dogs that did not."
The initial study findings will be published shortly in the Journal of
American Veterinary Medicine. It is hoped that this and future research
in this area finally will begin to offer owners definitive preventive powers
against this horrific condition.
Editor's note: The results of the dietary analysis component of Glickman's
research will be featured in a future DOG WORLD article.
A Dog Writers Association of America annual writing competition
finalist, Sharon Pflaamer holds a bachelor of arts degree in English from
Northern illinois University and has been writing on the subject of dogs
for 74 years. She shares her life with Bronmaur's Conquistador (Kassie)
and Bronmaur's Cross Current (Brook), two mahogany sable and white rough
Collies, whom she says fill her days with laughter and love.
PLANNING AHEAD
The following steps may help improve your dog's chances of survival should
it suffer from bloat and torsion.
The signs of bloat and torsion should be memorized or posted in the kitchen
or kennel. Because survival of this life-threatening condition depends
on prompt treatment, owners of high-risk dogs exhibiting one or more signs
of bloat and torsion never should take a "wait and see how the dog
is in the morning" approach to veterinary intervention. Veterinary
treatment should be sought immediately.
The nearest veterinary clinic offering 24-hour emergency service and
having staff capable of performing gastropexy should be identified ahead
of time. When a dog is fighting for its life, you won't have time to call
around to find a clinic that is open, much less capable of performing
gastropexy. The fastest route to the facility also should be determined
and, because most bloat episodes occur after-hours, driven at least once
in the dark. Owners always should be sure they have enough gas to drive
to the emergency facility when they park their car every night as well.
The telephone numbers of the 24-hour facility and the dog's regular veterinarian
should be posted by or on the phone. Whether a dog is being taken to its
regular veterinarian for emergency first aid or directly to a 24-hour
emergency facility, owners should phone ahead. Advance notice allows veterinary
staff to be prepared to treat the dog immediately upon its arrival.
If owners live alone and own a dog that weighs more than they can lift,
they should ask two neighbors in advance it they would be willing to assist
in getting the dog into the car in an emergency situation. (As bloat and
torsion advance, dogs become weaker and weaker. Eventually they are unable
to walk.) Two people can carry a dog by using a blanket as a stretcher.
Perhaps most important of all, owners should learn from their veterinarians
how to pass a stomach tube and insert a trocar. This especially is important
if owners live a long distance from an emergency clinic.
EMERGENCY TREATMENT AND PREVENTION
Editor's note: The following describes emergency procedures for treating
bloat/torsion in the life-threatening stages; how ever owners should consult
their veterinarian for advice and instruction on administering any type
of first aid and recognizing when intervention is necessary. This is not
meant as a replacement for such veterinary consultation.
Bloat can occur at any time -- not just after eating -- and when it does,
it can happen very swiftly. If it is not treated quickly, the dog will
die. Because it can have a rapid onset, owners may not have time to get
their dog to a veterinarian. When dogs are down and in shock, the only
way to save them may be to perform emergency first aid. In this regard,
the first thing to do is attempt to pass a stomach tube down into the
dog's stomach to relieve the air This is effective if the stomach has
not already twisted. If it has twisted, however, the tube won't pass into
the stomach. In that event, a large-gauge needle called a trocar, which
is much larger than one used for giving vaccines, should be inserted into
the side of the huge, distended abdomen to allow the air to escape. There
is a hissing sound as the air is released. (To be prepared, owners of
high-risk dogs should have their veterinarians train them to do these
procedures In advance and provide them with the necessary equipment.)
Note: Owners who fear they will injure their dog seriously or cause it
to bleed to death by inserting the needle into its abdomen need not worry.
A dog with a dilated abdomen will not bleed to death after the abdomen
has been punctured with the needle. But, even if an owner did do damage,
the dog almost certainly would die anyway without emergency first-aid
treatment so the owner has little choice.
Whether emergency first aid is performed by the owner or veterinarian
it buys time to transport the dog to a facility capable of performing
the necessary surgery
DIAGNOSIS AND TREATMENT
A high percentage of bloat cases can be confirmed clinically. When the
dog has a huge, distended stomach and is in shock, there is little question
that bloat is the cause. When bloat occurs without the gross, abdominal
distension, however diagnosis is somewhat trickier. In these cases it
must be confirmed by X-ray. Although every veterinarian should be equipped
to diagnose the condition, not all are capable of performing the surgery
needed which involves opening up the abdomen, emptying the stomach contents,
repositioning the stomach in its normal position and fixing it permanently
in place so it cannot rotate.
The stomach permanently is fixed in placed with a procedure called gastropexy.
This prevents the stomach from twisting again in the future by attaching
it to some fixed structure in the abdominal cavity such as a rib or the
body wall. This may be done in several ways all work well Gastropexy will
not prevent dilatation from recurring, but it effectively prevents volvulus.
Thus if dilatation recurs, it is not life-threatening because the stomach
cannot twist.
It is important to note that if first aid is performed but not followed
by gastropexy on a dog that has had a bloat episode, bloat likely will
occur again. (Gastropexy commonly is performed after a bloat episode,
even if torsion has not occurred.) In dogs that had acute bloat episodes,
the one-year recurrence rate in those that had only first aid was more
than 90 percent, while the recurrence rates in those that had gastropexy
were about 2 percent to 4 percent in the following year. If gastropexy
is performed prophylactically, the one-year risk of bloat may be even
lower.
PROPHYLACTIC GASTROPEXY
Because many people are concerned their dogs are at high risk for bloat
and worried they may not be there when it happens, prophylactic (preventive)
gastropexy is becoming more common It is best to have it performed by
a veterinary surgeon who has done it before, however, just as the surgery
for bloat itself should be performed by an experienced surgeon.
The ideal time to perform gastropexy is when the animal is being neutered.
When done in this context postoperative care for prophylactic gastropexy
is no different than for a normal spay When gastropexy is performed on
a dog with an acute episode of bloat, however it is more involved and
delicate and has high mortality rates. It also requires very intensive
therapy for several days afterward, often has complications and is very
expensive. Gastropexy performed following an episode of bloat may cost
$3,000 or more while prophylactic gastropexy may cost as litLe as $200
Prophylactic gastropexy is recommended in some instances if a dog fits
the high risk profile (e g, belongs to a breed known to be at high risk,
has a first degree relative with a history of bloat, etc.). Animals that
undergo prophylactic gastropexy because of their high-risk status should
not be used for breeding. Information in this sidebar was provided by
Larry Glickman, V.M,D., Dr. Ph.D.
Is Your Dog At Risk?
PROFILE OF DOGS AT HIGH RISK FOR BLOAT
- Giant breed (e.g., Great Dane, Irish Wolfhound)
- Large breed (e.g., Bloodhound, Akita)
- Deep and narrow abdomen (e.g., Setters, Basset Hound)
- Fearful or anxious
- Fast eater
- History of abdominal distension after eating
- Excessive flatulence or belching
- First-degree relative that bloated
- History of poor body condition
Note: Not all dogs that fit the high-risk profile necessarily will bloat.
They are, however, at higher risk of developing the condition than are
dogs that have none or few of these characteristics.
PROFILE OF DOGS LEAST LIKELY TO BLOAT
- Happy temperament
- Normal or overweight
MANAGEMENT THAT INCREASES THE RISK OF BLOAT
- Feeding one meal per day
- Raising the food bowl
MANAGEMENT THAT DECREASES THE RISK OF BLOAT
- Feeding small, multiple meals per day
CAPTIONS The stomach of a dog afflicted with bloat rapidly
fills with air, causing it to dilate, Torsion occurs when the enlarged stomach
twists, cutting off contact with the esophagus and impairing blood vessels,
resulting in decreased blood flow to the rest of the body. To prevent dogs
from eating too quickly and gulping excess air, which are believed to contribute
to bloat, some owners place a heavy chain in the food bowl.
*Copyright 2002, Jill Swedlow. Sunnyside Danes. All rights
reserved. Jill is a breeder, exhibitor and licensed AKC judge in the United
States who will be judging the 2002 National Great Dane Speciality. Our
thanks to her willingness to share this article for educational purposes.