caption: the ecg circuit ppp
exif: {"Image DocumentName": "Electrocardiogram Intervals show timing of cardiac cycle", "Image ImageDescription": "P-P = one cardiac cycle. P-Q = time for atrial depolarization. Q-T = time for ventricular depolarization. T-P = time for relaxation.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}