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  Indian J Med Microbiol
 

Figure 1: Representative action potentials (green tracings) recorded in the right atrial appendage samples of the study patients. (a-d) Action potentials triggered by electrical stimulation (stimulation spikes can be observed in front of each action potential) in the right atrial appendage samples of four different patients. Similar action potentials were also recorded in the other two patients in whom electrophysiological study was performed. In three of the six patients, spontaneous action potentials could also be observed (examples are provided in [e and f]). The occurrence of spontaneous action potentials during the electrophysiological study is not unusual and could be related to mechanical stretch, electrolyte imbalance, ischemia, and/or microelectrode manipulation

Figure 1: Representative action potentials (green tracings) recorded in the right atrial appendage samples of the study patients. (a-d) Action potentials triggered by electrical stimulation (stimulation spikes can be observed in front of each action potential) in the right atrial appendage samples of four different patients. Similar action potentials were also recorded in the other two patients in whom electrophysiological study was performed. In three of the six patients, spontaneous action potentials could also be observed (examples are provided in [e and f]). The occurrence of spontaneous action potentials during the electrophysiological study is not unusual and could be related to mechanical stretch, electrolyte imbalance, ischemia, and/or microelectrode manipulation