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Session: Heart
Session starts: Thursday 26 January, 10:30
Presentation starts: 11:30
Room: Room 558

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Johanneke ten Broeke ()
Rutger van der Leur ()
Alejandra Zepeda Echavarria ()
Melle Vessies ()
Pieter Doevendans ()
Joris Jaspers ()
René van Es ()

Abstract:
Background. The miniECG, a 9x5cm device equipped with one electrode at each corner, has the potential to function as a low-cost, easy to use alternative for the 12-lead ECG and may facilitate ECG monitoring at home. The device aims to improve time-to-treatment in various cardiac diseases. The utility of the miniECG in detecting the full spectrum of ECG abnormalities should be investigated. Research goal. The aim of this study was to define criteria for evaluation of the miniECG in patients with normal sinus rhythm (NSR), and both left and right bundle branch blocks (LBBB and RBBB). Methods. Next to the acquisition of the 12-lead ECG, measurements with the miniECG were performed at the University Medical Centre Utrecht. The lower two electrodes of the miniECG were positioned in the mid-line at the lower sternal border. In this preliminary analysis, miniECGs of 60 patients (20 patients with NSR, 20 patients with LBBB and 20 patients with RBBB) undergoing a 12-lead ECG were visually inspected. In later research, a total of 15.000 patients will be included. Results. P-, QRS- and T-waves were easily recognized in the miniECG signal. In miniECGs of patients with NSR, P-waves that were positive in lead II (measured from the upper right to the lower left electrode) preceded every QRS complex. For both the LBBB and RBBB patient groups, widened (>120ms) QRS complexes were observed. In patients with LBBB, S-waves were present in lead II. For patients with RBBB, both lead II and lead I2 (measured from the upper left to the lower right electrode) showed R-waves or a typical RSR pattern. Conclusion. This preliminary analysis shows the potential of the miniECG to recognize NSR and cardiac abnormalities such as bundle branch blocks. Structural analysis of 15.000 miniECGs is yet to be performed to extend the criteria for interpretation of the miniECG for cardiac abnormalities.