PMID- 28468664 OWN - NLM STAT- MEDLINE DCOM- 20171102 LR - 20181113 IS - 1751-0147 (Electronic) IS - 0044-605X (Print) IS - 0044-605X (Linking) VI - 59 IP - 1 DP - 2017 May 3 TI - Twenty-four-hour ambulatory electrocardiography characterization of heart rhythm in Vipera berus-envenomed dogs. PG - 28 LID - 10.1186/s13028-017-0296-x [doi] LID - 28 AB - BACKGROUND: Vipera berus has a worldwide distribution and causes high morbidity in dogs annually. A complication to envenomation may be cardiac arrhythmias. The purpose of this study was to investigate the prevalence, types, and timing of arrhythmias, using 24-h ambulatory electrocardiography (24-AECG), in dogs bitten by V. berus in the first 24-32 h after envenomation. In addition, this study aimed to investigate if there were differences in selected clinical and hematological- and biochemical variables (including cardiac troponin I) at admission between V. berus-envenomed dogs with and without detected pathologic arrhythmias. Seventeen prospectively recruited client-owned dogs acutely envenomed by V. berus, were therefore examined clinically and echocardiographically, sampled for blood, hospitalized, and monitored by 24-AECG. RESULTS: Clinically significant pathologic arrhythmias in this study were of ventricular origin, such as frequent single ventricular premature contractions (VPCs) and couplets of VPCs, episodes of ventricular tachycardia and idioventricular rhythm, and "R-on-T phenomenon". Variations of these arrhythmias were detected by 24-AECG in eight (47%) of included dogs. No arrhythmias were detected by cardiac auscultation. Twenty-four hours following envenomation, four out of eight dogs experienced decreases (all P < 0.039), and three out of eight dogs experienced increases (all P < 0.034), in arrhythmic episodes. All four dogs bitten on a limb developed pathologic arrhythmias. Otherwise, no significant differences in clinical, hematological or biochemical variables were seen between dogs with pathologic arrhythmias and those without. CONCLUSION: Forty-seven percent of dogs bitten by V. berus included in this study experienced pathologic arrhythmias of abnormal ventricular depolarization. During the first 24-32 h from the snakebite, some dogs experienced a decrease in arrhythmic episodes and others an increase in arrhythmic episodes. These findings indicate a potential value of repeated or prolonged electrocardiography monitoring of envenomed dogs for identification of which dogs that might benefit the most from prolonged hospitalization for optimal monitoring and treatment of cardiac abnormalities. In the present study, dogs that developed arrhythmias could not be differentiated from dogs that did not based on clinical findings or hematological or biochemical variables obtained at admission. FAU - Vestberg, Anna Rave AU - Vestberg AR AD - Anicura Regional Animal Hospital, Ljusnevagen 17, 12848, Bagarmossen, Sweden. anna.vestberg@anicura.se. FAU - Tidholm, Anna AU - Tidholm A AD - Anicura Albano Animal Hospital, Rinkebyvagen 21a, 18236, Danderyd, Sweden. AD - Department of Clinical Sciences, Faculty of Veterinary Medicine and Small Animal Sciences, Swedish University of Agricultural Sciences, P.O. Box 7084, 75007, Uppsala, Sweden. FAU - Ljungvall, Ingrid AU - Ljungvall I AD - Department of Clinical Sciences, Faculty of Veterinary Medicine and Small Animal Sciences, Swedish University of Agricultural Sciences, P.O. Box 7084, 75007, Uppsala, Sweden. LA - eng PT - Journal Article DEP - 20170503 PL - England TA - Acta Vet Scand JT - Acta veterinaria Scandinavica JID - 0370400 RN - 0 (Viper Venoms) SB - IM MH - Animals MH - Arrhythmias, Cardiac/etiology/pathology/*veterinary MH - Dog Diseases/*etiology/pathology MH - Dogs MH - Electrocardiography, Ambulatory/*veterinary MH - Female MH - Male MH - Snake Bites/*veterinary MH - Viper Venoms/*toxicity MH - Viperidae/*physiology PMC - PMC5415709 OTO - NOTNLM OT - Ambulatory ECG OT - Arrhythmia OT - Dog OT - ECG OT - Snakebite OT - Vipera berus EDAT- 2017/05/05 06:00 MHDA- 2017/11/03 06:00 PMCR- 2017/05/03 CRDT- 2017/05/05 06:00 PHST- 2017/02/27 00:00 [received] PHST- 2017/04/28 00:00 [accepted] PHST- 2017/05/05 06:00 [entrez] PHST- 2017/05/05 06:00 [pubmed] PHST- 2017/11/03 06:00 [medline] PHST- 2017/05/03 00:00 [pmc-release] AID - 10.1186/s13028-017-0296-x [pii] AID - 296 [pii] AID - 10.1186/s13028-017-0296-x [doi] PST - epublish SO - Acta Vet Scand. 2017 May 3;59(1):28. doi: 10.1186/s13028-017-0296-x.