P’ wave axis analysis for the identification of sustained focal atrial tachycardia from low atrial origin - case report / Análise do eixo da onda P para identificação de taquicardia atrial sustentada com origem atrial baixo- relato de caso

Pedro Pablo Martínez Padua

Resumo


Anamnesis: A 8-year-old female poodle was presented by a clinical examination, being evidenced tachycardia over the auscultation.the patient was referred to cardiac assessment. Clinical and laboratory findings: At admission the surface ECG showed sustained runs of complex atrial tachycardia, with a ventricular cycle length (R-R interval) of 240 ms. According to the leads ECG system to the P wave axis on the frontal plane, it present an inferior-to-superior, right-to-left axis; these characteristics were indicative of a Focal Atrial Tachycardia (FAT) from low atrial origin, arising from the Coronary Sinus Ostium (CSO). Treatment approach: Radiofrequency catheter ablation is the recommended treatment from FAT, but in the absence must to be used pharmacological treatment. The drugs of choice were a b-blocker and calcium channel blockers. Conclusion: The combination and the dosages used in the pharmacological treatment of this casewere effective, provided a good control on heart rate in dogs with FAT arising from low atrial origin.


Palavras-chave


Canine, Arrhythmia, Holter, FAT.

Texto completo:

PDF

Referências


Santilli RA, Santos LF, Perego M. Permanent junctional reciprocating tachycardia in a dog. J Vet Cardiol. 2013; 15: 225-30.

Santilli RA, Bussadori C. Orthodromic incessant atrioventricular reciprocating tachycardia in a dog. J Vet Cardiol. 2000; 2: 25-9.

Dyce KM, Sach WO, Wensing CJG. Textbook of Veterinary Anatomy. WB Philadelphia: Saunders; 1996.p. 219–220.

Hamlin RL. Normal cardiovascular physiology. In: Sisson D, Fox PR, Moise NS, editors. Textbook of feline and canine cardiology. 2nd ed. Philadelphia: Saunders; 1999. p. 25–37.

Kistler PM, Fynn SP, Haqqani H, Stevenson IH, Vohra JK, Morton JB, Sparks PB, Kalman JM. Focal atrial tachycardia from the ostium of the coronary sinus. Electrocardiographic and electrophysiological characterization and radiofrequency ablation. J Am Coll Cardiol. 2005; 45: 1488-93.

Bensler JM, Frank CM, Razavi M, Rasekh A, Saeed M, Haas PC, Nazeri A, Massumi A. Tachycardia-mediated cardiomyopathy and the permanent form of junctional reciprocating tachycardia. Tex Heart Inst J. 2010; 37: 695 - 8.

Santilli RA, Spadacini G, Moretti P, Perego M, Perini A, Tarducci A, Crosasa S, Salemo-Uriarte JA. Radiofrequency catheter ablation of concealed accessory pathways in two dogs with symptomatic atrioventricular reciprocating tachycardia. J Vet Cardiol. 2006; 8: 157-65.

Santilli RA, Spadacini G, Moretti P, Perego M, Perini A, Crosara S, Tarducci A. Anatomic distribution and electrophysiologic properties of accessory atrioventricular pathways in dogs. J Am Vet Med Assoc. 2007; 231: 393-8.

Santilli RA, Perego M, Perini A, Moretti P, Spadacini G. Electrophysiologic characteristics and topographic distribution of focal atrial tachycardias in dogs. J Vet Intern Med. 2010; 24: 539-45.

Wright KN, Atkins CE, Kanter R. Supraventricular tachycardia in four young dogs. J Am Vet Med Assoc. 1996; 208: 75-9.

Santilli RA, Perego M, Crosara S, Gardini F, Bellino C, Moretti P, Spadacini G. Utility of 12-lead electrocardiogram in differentiating paroxysmal supraventricular tachycardias in the dogs. J Vet Intern Med. 2008; 22: 915-23.

Kalman JM, Olgin JE, Karch MR, Hamdan M, Lee RJ, Lesh MD. “Cristal tachycardias”: origin of right atrial tachycardias from the crista terminalis identified by intracardiac echocardiography. J Am Coll Cardiol. 1998; 31: 451–9.

Morton JB, Sanders P, Das A, Vohra JK, Sparks PB, Kalman JM. Focal atrial tachycardia arising from the tricuspid annulus: electrophysiologic and electrocardiographic characteristics. J Cardiovasc Electrophysiol. 2001; 12: 653–9.




DOI: https://doi.org/10.34188/bjaerv3n3-135

Apontamentos

  • Não há apontamentos.