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 58,342 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The Chiltern Box is a small electrocardiograph designed for home monitoring of human patients. Its veterinary application has been investigated in the dog, the cat and the horse. It has been useful in the diagnosis of previously undiagnosed dysrhythmias in dogs showing signs of exercise intolerance and syncope.
Vet Rec 1987 Jan 24
PMID:Evaluation for veterinary use of the Chiltern box: a device for home electrocardiographic monitoring. 382 56

The presence of carbonic anhydrase activity in rabbit and mouse kidneys was examined using a histochemical procedure with plastic embedded sections stained by the modified version of the cobalt-phosphate method (Hansson, 1967, 1968; Ridderstrale, 1976). Proximal convoluted tubules (S1 and S2 segments) in both species were strongly positive for carbonic anhydrase activity on the membranes of the luminal, lateral, and basal surfaces. The apical cytoplasm beneath the brush border and the nuclei also stained positively for carbonic anhydrase. The S3 segment (pars recta) of the proximal tubule in the rabbit was positive on the luminal membrane, with somewhat less intensity seen on the lateral and basal surfaces. This segment in the mouse was completely negative. The first part of the thin limbs of long-looped nephrons exhibited strong staining in the mouse. Faint luminal staining was present on descending thin limbs of short-looped nephrons in the mouse. In the rabbit, both the medullary and cortical ascending thick segments of the limb of Henle were completely negative. In contrast, the medullary and cortical ascending thick limbs in the mouse kidney showed staining on all plasma membranes. The intercalated cells in the cortical and medullary portion of the collecting tubules stained positively for carbonic anhydrase in both species. The principal cells of the collecting duct in the cortex were negative in the rabbit and faintly positive in the mouse. The principal cells in the upper medullary collecting tubules in both species stained intensely along the luminal, lateral, and basal cell membranes. The papillary collecting ducts were largely negative in both the rabbit and the mouse. Some interstitial cells in the rabbit in the region of the papillary tip were strongly positive. We conclude that there is a marked difference in carbonic anhydrase activity within and between the renal tubular segments of the rabbit and the mouse. In addition, these distinct differences that exist between the two species correlated with known physiological roles in ion transport.
Anat Rec 1982 Nov
PMID:Carbonic anhydrase histochemistry in rabbit and mouse kidneys. 681 76

A five-year-old gelding suffered syncope at the end of a period of exercise. A 24-hour electrocardiogram recording revealed intermittent pauses in the sinus rhythm of up to 10 seconds, indicating sinus node disease; the pauses occurred repeatedly, particularly after exercise. A dual-chamber, rate-adaptive pacemaker was successfully implanted, which prevented excessive postexercise bradycardia and syncope, and allowed the horse to return to work.
Vet Rec 2002 Nov 02
PMID:Implantation of a dual-chamber, rate-adaptive pacemaker in a horse with suspected sick sinus syndrome. 1244 92

The aim of this retrospective study was to evaluate the utility of transcutaneous external pacing (TEP) during transvenous pacemaker implantation in dogs. Eighty-two pacemakers were implanted in 77 dogs because of third-degree atrioventricular block (AVB) (58 cases; 70.7 per cent), sinus node dysfunction (SND) (nine cases; 11.0 per cent), high-grade second-degree AVB (six cases; 7.3 per cent), persistent atrial standstill (PAS) (four cases; 4.9 per cent), post-radiofrequency catheter ablation of the bundle of His (four cases; 4.9 per cent) and vasovagal syncope with atrial fibrillation (one case; 1.2 per cent). TEP was initiated during general anaesthesia after the onset of asystole or profound bradycardia, and stopped when permanent pacing was started. The use of TEP was necessary in 27 cases: 19 cases of third-degree AVB, five of SND, two of PAS and one of vasovagal syncope. External pacing was successful in all but two dogs.
Vet Rec 2010 Aug 14
PMID:Use of transcutaneous external pacing during transvenous pacemaker implantation in dogs. 2071 31

The aim of the present study was to retrospectively evaluate survival in a population of 62 boxer dogs with arrhythmogenic right ventricular cardiomyopathy (ARVC), without left ventricular systolic failure, based on the following factors: age at diagnosis, presence of syncopal episodes, Holter arrhythmia classification and administered treatment. Medical records of boxer dogs with a diagnosis of ARVC between 2000 and 2010 were reviewed. Results showed that median survival time (MST) was longer in younger ARVC dogs than in the older ones P<0.001). MST was statistically different (P=0.012) between dogs with syncope (365 days) and dogs without syncope episodes (693 days), the probability of death within a year being 4.8 times greater in dogs with syncope (95% CI 1.48 to 15.99) than in dogs without syncope. Regarding Holter classification results, MST was 547.5 days in Holter class-2 dogs and 365 days in Holter class-4 dogs (P=0.030). There were no differences regarding treatment options; MST was 365 days (95% CI 193.615 to 536.4) in the sotalol group, 365 days (95% CI 92.86 to 637.14) in the mexiletine plus atenolol group, and 547.50 days (95% CI 170.45 to 924.55) in the procainamide group (P=0.383). According to this study, the best prognosis is for the younger boxer dog without syncope. There were no differences in survival times in relation to the different treatment options used.
Vet Rec 2013 Mar 09
PMID:Arrhythmogenic right ventricular cardiomyopathy in boxer dogs: a retrospective study of survival. 2331 69