#include #include #include #include #include #include #define WIFI_AP "NETGEAR" //connect to your Wifi network #define WIFI_PASSWORD "123456" //change the password #define WIFI_AUTH LWIFI_WPA // choose from LWIFI_OPEN, LWIFI_WPA, or LWIFI_WEP. It normally has a low amplitude, and even more often is completely absent. U wave: The U wave is hypothesized to be caused by the repolarization of the interventricular septum. Acceptable ranges vary with heart rate, so it must be corrected to the QTc by dividing by the square root of the RR interval. It is generally upright in all leads except aVR and lead V1.Ĭorrected QT interval (QTc): The QT interval is measured from the beginning of the QRS complex to the end of the T wave. T wave: The T wave represents the repolarization of the ventricles. ST segment : The ST segment connects the QRS complex and the T wave it represents the period when the ventricles are depolarized. J-point: The J-point is the point at which the QRS complex finishes and the ST segment begins. The ventricles have a large muscle mass compared to the atria, so the QRS complex usually has a much larger amplitude than the P-wave QRS complex:The QRS complex represents the rapid depolarization of the right and left ventricles. This interval reflects the time the electrical impulse takes to travel from the sinus node through the AV node. PR segment : The PR interval is measured from the beginning of the P wave to the beginning of the QRS complex. Very quick responsiveness, whereas the other sensors lagged by about 10 seconds (including the Polar Grit X Pro’s internal sensor). Notice here that the Polar H10 (paired to the FR745, in green) and the Apple Watch SE both nail this sprint. Atrial depolarization spreads from the SA node towards the AV node, and from the right atrium to the left atrium. Look at this last sprint I did, where my HR popped to 170bpm. P-wave : The p-wave represents depolarization of the atria.
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