In our study the ECG abnormalities were sinus tachycardia, T-wave inversion in inferior leads, left anterior hemiblock with left axis deviation
and ventricular premature contraction.
* Pacemaker spikes are not always visible, but the morphology will usually show atypical LBBB with left axis deviation
and RV apical pacing.
There is frequently a left axis deviation
due to these changes.
In control group, there was no electrical deviation, but among IHD cases 10 cases showed left axis deviation
Electrocardiography showed left axis deviation
with normal rhythm.
Figure 3 shows a monitor strip during battery exchange with the patient's own rhythm (left axis deviation
) followed by VVI stimulation by the newly connected pacemaker, showing an unusual right axis deviation.
Electrocardiogram (ECG) was suggestive of sinus tachycardia with left axis deviation
. Two-dimensional (2D) transthoracic echocardiography demonstrated IVS posterior wall mismatch, right ventricular free wall hypokinesia, ejection fraction 49.7% and normal cardiac valve morphology.
Criteria for left anterior fascicular block as proposed by the World Health Organization/International Society and Federation of Cardiology (WHO/ISFC) task force are left axis deviation
of the QRS in the frontal plane of -45[degrees] to -90[degrees], qR pattern in aVL, R peak time in aVL [greater than or equal to] 45 ms, and QRS duration <0.12s.
There was a left axis deviation
P wave axis greater than +70[degrees] thus usually reflects right axis deviation of the p wave, P wave axis less than +45[degrees] usually reflects left axis deviation
(24) Slight left axis deviation
(-30, and -15, respectively) of mean QRS axis was present in 14.3% cases.
Among Athletes 16% (8/50) subjects showed Left Axis deviation
(LAD), 4% (2/50) showed Right Axis Deviation (RAD).