A potentially fatal condition that affects pets throughout the world has been treated for the first time in New Zealand
through an incision no bigger than a needle prick, thanks to the efforts and research of Veterinary Specialists
Last Saturday Doctor Alastair Coomer, a Registered Specialist in Small Animal Surgery, arranged and performed the first
successful interventional procedure in New Zealand to circumvent and treat the condition known as “intrahepatic
The procedure was performed on two patients in a single day; Georgie, a one-year old female Golden Retriever, and Sala,
a 10-month old female Rottweiler.
Georgie’s family, Mark Hughes and his partner Lisa McDonald, are “incredibly relieved” to hear of Georgie’s successful
“Alastair’s been fantastic, he’s been updating us each day. We were surprised how good she looked even a few hours after
the surgery,” Mark says.
“It was an incredibly stressful wait during the procedure - any surgery is risky, but this was quite a big deal and
hasn’t been done in New Zealand before.”
He says Georgie will be home tomorrow, joining Mark and Lisa’s growing family of Lucy the Yorkshire Terrier and Meg the
kitten, and is looking better every day.
Sala’s family, Rob and Maree Lloyd, say that the change in Sala’s behaviour is already noticeable.
“She’s looking much better. It used to take us up to half an hour to get her to eat, and she wasn’t enjoying life when
she was ill,” Maree says.
“It was a tense wait when she was in surgery, but we were confident in the ability of the team, and we knew she was in
the best of hands.”
She says that updates from the team at VSA have been regular and positive, and was overjoyed to hear she was “out of the
woods” and on her way to recovery.
Rob and Maree are looking forward to having Sala home again, with all of her old energy and enthusiasm restored.
“Portosystemic shunts – also called PSSs - are abnormal blood vessels that take blood from the intestines and bypass the
liver, rather than diffusing through the liver like a sponge as they normally would. This results in a clinical syndrome
with various life-threatening medical and behavioural consequences,” Dr. Coomer says.
“When the abnormal blood vessel bypasses the liver by going straight through the liver itself, surgical treatment is
consistently more challenging than when the vessel is outside the liver.”
Surgically treating PSSs that are within the liver – also known as intrahepatic shunts – is complicated procedure,
difficult to perform and often resulting in complications that can lead to loss of life. However, the surgery Dr. Coomer
performed on December 1st of this year has changed that.
“Percutaneous Transvenous Coil Embolization – PTCE - is an established technique around the world for blocking the
shunting vessel from the inside out,” Dr. Coomer says.
“A catheter is placed in the jugular vein in the patient’s neck, through which the vascular stent and coils are
delivered to block the abnormal vessel. This technique has comparable efficacy to traditional surgery, but is associated
with dramatically lower complication and higher survival rates.
Dr. Coomer says that after successful treatment and closure of the shunt, the animals in question are expected to live
“We assembled the dream team for this procedure from around the world, including a mate of mine, a surgeon and
interventionist from California who’s really as good as it gets,” Dr. Coomer says.
He says the other, more drastic forms of surgery used for intrahepatic portosystemic shunts are riskier, however
extensive research and refinement of the procedure made him confident the surgery would be a success.
“This treatment technique has been attempted elsewhere once before in New Zealand, but this time around there are more
variables we can control.”
Dr. Coomer says the smoothness of the procedure was both gratifying and relieving.
“When you’re establishing a system for the first time you don’t know what snags you might run into. From an operational
and logistical perspective, everything went smoothly, and the procedure itself worked flawlessly - which is the most
exciting part about it,” Dr. Coomer says.
“We’ve talked about setting this up as a service to offer all of New Zealand, and the results of these cases were really
He described the initial reaction of the families to news of the surgery’s success as one of relief, gratitude, and
happiness, with both families excited to have their pets home and looking forward to their new lives.
The continued use of this procedure is something Dr. Coomer is highly confident about.
“It would be case-dependent, but I would have absolutely no hesitation in using the procedure again. I think this is
very much the way it will be done in New Zealand, going forward.”
Dr. Coomer is a long-time animal lover who lives in Auckland with his wife, three children, Harry, their Border Terrier,
and two Burmese cats, Arthur and Teddy. An accomplished veterinarian, Dr. Coomer has won multiple awards, both national
and international, for his research presentations and veterinary work.
After graduating from Massey University with a Bachelor of Veterinary Science, he completed post-graduate specialist
training in Canada and Florida and has worked as a specialist in San Francisco and New Zealand, specialising in general
He says that seeking out more effective options for treatment is part of Veterinary Specialists Auckland’s dedication to
providing the highest quality care to the animals they treat.
“It’s what we do; we ask ourselves if there’s a better way to do something, if there’s a better standard of care that we
can offer our patients and their families.”