• Journal of Veterinary Clinics
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• v.28 no.2
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• pp.240-243
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• 2011

Several vascular accesses can be used for catheter guided coil embolization for occluding patent ductus arteriosus (PDA). Although trans-femoral approach is most commonly used in dogs, it is often unable to insert angiocatheter for inserting the coil delivery system, especially small puppies weighing less than 2 kg of body weight. Therefore this case study developed trans-carotid method for puppy using JR coronary catheter and free push delivery system. Using this new method, we successfully treated a puppy with PDA weighing 1.25 of body weight.

• Korean Journal of Radiology
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• v.22 no.4
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• pp.568-576
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• 2021

Arteriovenous malformations (AVMs) are direct communications between primitive reticular networks of dysplastic vessels that have failed to mature into capillary vessels. Based on angiographic findings, peripheral AVMs can be classified into six types: type I, type IIa, type IIb, type IIc, type IIIa, and type IIIb. Treatment strategies vary with the types. Type I is treated by embolizing the fistula between the artery and the vein with coils. Type II (IIa, IIb, and IIc) AVM is treated as follows: first, reduce the blood flow velocity in the venous segment of the AVM with coils; second, perform ethanol embolotherapy of the residual shunts. Type IIIa is treated by transarterial catheterization of the feeding arteries and injection of diluted ethanol. Type IIIb is treated by transarterial or direct puncture approaches. A high concentration of ethanol is injected through the transarterial catheter or direct puncture needle. When the fistula is large, coil insertion is required to reduce the amount of ethanol. Type I and type II AVMs showed the best clinical results; type IIIb showed a satisfactory response rate. However, type IIIa showed the poorest response rate, either alone or in combination with other types. Clinical success can be achieved by using different treatment strategies for different angiographic AVM types.

• Journal of Veterinary Clinics
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• v.27 no.6
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• pp.740-745
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• 2010

Patent ductus arteiosus (PDA) is the persistent opening of ductus arterious located between pulmonary artery and descending aorta after birth. Although PDA can be occluded by surgical ligation, interventional closure of PDA using various devices is being rapidly replaced to surgical ligation, because of its non-invasive nature of treatment and minimal post-care after treatment. Main problem encountering in interventional treatment in toy breed dogs is vascular inaccessibility due to small size of artery. Although transvenous approach using jugular veins has been developed, this technique requires experienced skill to locate occlude devices into PDA and has high risk of accidental dislodgement of occluding devices (i.e. embolization coils or vascular plugs). Therefore, in this study, we developed a modified technique for coil embolization using mini-angiocatheter with trans-femoral approach in toy breed dogs (< 3.0 kg of body weight). With this modified method, we were successfully treated two toy breed (Maltese) dogs with the left to right shunted PDA.