The study was conducted with an objective torule out the dogs presented with a complaint of clinical signs suggestive of cardiac disease. A total of 14 animals were chosenfor theassessment of serum NT-pro BNP level. The animals were grouped into to group 1 with Holterelectrocardiographic arrhythmias and group 2 without Holterelectrocardiographic arrhythmias. Group 1 showed significant increase in the NT-pro BNP levels in contrast to the control and group 2 animals. NT-pro BNP estimation in screening of dogs suspected for cardiac sickness was found to be reliable step when done concurrently withother diagnostic tests.

Hyperkalaemia is a life-threatening electrolyte imbalance because it affects cardiac conduction and can lead to fatal arrhythmias if left untreated. The present study describes the occurrence of hyperkalaemia in cats and the electrocardiographic changes associated with this electrolyte imbalance. Hyperkalaemia was identified in 83.33 per cent of the study group subjects. Acute kidney injury and obstructive uropathy were the main clinical conditions associated with it. Electrocardiographic findings in hyperkalaemia in different cats under study included peaked T waves in lead II and the precordial lead CV6LL, atrial standstill and sino-ventricular rhythm, normal sinus rhythm, ventricular tachycardia, first-degree atrio-ventricular block, bradycardia, sinus tachycardia, and atrio-ventricular dissociation. Electrocardiography should always be performed in cases suspected of electrolyte imbalances, particularly hyperkalaemia, so as to identify any fatal arrhythmias and initiate treatment at the earliest.