PMC9588376_01
PMC9588376_02
Presenting 12-lead electrocardiogram.
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fig1
Electrocardiogram (ECG) revealed wide complex tachycardia with a heart rate of 174 bpm and prolonged QRS of 270 ms (Figure 1), and cardiology was consulted. The ECG revealed a regular wide complex tachycardia at a heart rate of 170 bpm and a prolonged QRS with duration of 270 ms (Figure 1).
ECG showing atrial flutter after administration of metoprolol and amiodarone.
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The administration of amiodarone and metoprolol slowed the ventricular rate revealing the flutter waves as shown in Figure 2.
ECG demonstrating sinus rhythm.
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fig3
Shortly after, the patient converted to sinus rhythm (Figure 3), and flecainide was stopped.