The 18 dogs in which precordial leads
were also recorded belonged to the four different categories of this study (O=4; O+CD=4; CD=5; H=5).
Type 1 is characterized by "coved" ST elevation in the right precordial leads
. Type 1 ECGs in themselves are described as an idiopathic Brugada ECG pattern.
Caption: Figure 1: ECG during in-hospital VF arrest: new-onset coved-type ST-segment elevations at anterior precordial leads
In the case of our patient, electrocardiographic T-wave inversions in precordial leads
, and the abovementioned echocardiographic findings, raised a suspicion of ARVC.
It is characterized by persistent or transient ST elevation with successive negative T wave in the right precordial leads
(V1, V2) with or without right bundle branch block in the absence of structural heart abnormalities.
The typical ECG findings in this case are an initial ST-segment elevation, followed by the so-called Wellens' pattern characterized by transient T-wave inversion in the anterior precordial leads
and QT interval prolongation (5), which were not observed in our case.
Brugada syndrome is usually identified by a characteristic type 1 electrocardiography (ECG) pattern that consists of ST elevation of a coved type in the precordial leads
V1 to V3.
It is an electrocardiographic manifestation of a critical proximal left anterior descending coronary artery stenosis in patients with unstable angina and is characterized by symmetrical, often deep T wave inversions in the anterior precordial leads
, little or no cardiac marker elevation, discrete or no ST segment elevation and no loss of precordial R waves .
Repolarization abnormalities * Inverted T-waves in the right * Inverted T-waves in leads precordial leads
([V.sub.1] [V.sub.1] and [V.sub.2] in [V.sub.2], and [V.sub.3]) or individuals > 14 years of age (in beyond in individuals > 14 years the absence of complete right of age (in the absence of bundle branch block) or in complete right bundle branch [V.sub.4], [V.sub.5], or block QRS [greater than or equal [V.sub.6].
Systemic hypertension is the most common cause of inverted U waves in the left precordial leads
, followed by coronary heart disease and left-sided valvular diseases (1, 4).
He had an EKG performed, which showed normal sinus rhythm with S waves in lead 1 and T-wave inversions in leads III and precordial leads
. He also had a lower extremity duplex ultrasound, which was negative for thrombus.
Brugada syndrome is diagnosed in patients with ST-segment elevation with type I morphology [greater than or equal to]2 mm in [greater than or equal to] 1 lead among the right precordial leads
V1,V2 positioned in the 2nd, 3rd, or 4th intercostal space occurring either spontaneously or after provocative drug test with intravenous administration of Class I antiarrhythmic drugs