关键词学习:ECG - 心电图;cardiac cycle - 心动周期;QT interval - QT间期;LQTS - 长QT间期综合征;QTc - 校正QT间期;Bazett's formula - Bazett公式;QRS complex - QRS复合波;Depolarize - 除极、去极化;Repolarize - 复极化;Cardiac Action Potential - 心肌细胞动作电位;membrane potential - 心肌细胞膜电...
Ventricular repolarization duration as measured on the surface electrocardiogram by the QT interval and the heart rate corrected QT interval (QTc) may be influenced by many factors. In normal healthy subjects, the normal range of the QTc interval is quite broad ranging from 0.38 to 0.45 seconds,...
Although the QT exhibited a wide range of values (between 30 and 60 ms in Fig. 1B), it still followed a single normal distribution curve during both the nocturnal and diurnal periods (Fig. 1D). This suggests that QT is only weakly dependent on the nycthemeral cycle in mice, ...
void normalSlot() { __ ... } private: __ 元槽 void metaSlot() { __ ... } }; 在元槽的使用中,需要注意以下几点, - 元槽的调用方式与普通槽相同,可以直接在类内部调用,也可以通过对象调用。 - 元槽在类内部可以使用Q_ASSERT()或Q_ASSERT2()进行断言,以确保在特定条件下不被触发。 - 元槽...
QTc is the corrected QT interval, but it is only valid within a limited range of heart rates (50–120 bpm) (Bazett, 1920; Napolitano et al., 2006). Like any other quantitative trait reflecting the influences from multiple sources, the length of QTc has a normal (Gaussian) distribution ...
Using the QString '+' operator, it is easy to construct a complex string from multiple substrings. You will often write code like this: QString foo; QString type = "long"; foo->setText(QLatin1String("vector<") + type + QLatin1String(">::iterator")); if (foo.startsWith("(" ...
Q_COMPLEX_TYPE (the default) specifies that Type has constructors and/or a destructor and that it may not be moved in memory. Example of a "primitive" type: struct Point2D { int x; int y; }; Q_DECLARE_TYPEINFO(Point2D, Q_PRIMITIVE_TYPE); Example of a movable type: class Point2D...
Here, the operator defines a template QT interval by selecting the beginning of the QRS complex and the end of the T wave of one beat. The algorithm then finds the QT intervals of all other beats by determining how much each T wave must be stretched or compressed in time to best match...
所用技术: 1、实现自定义委托。 2、QTreewidget、QTableView, 3、MVC模式。 4、菜单栏的功能都可以在对应的控件上右击,弹出快捷菜单。 5、界面布局。 代码: //main.cpp #include <QApplication> #include "widget.h" int main(int argc, char *argv[]...
Tall, narrow T waves and a short QT interval appear first, usually when the plasma potassium concentration is in the range of 6 to 7 mmol/l. Subsequently, the QRS becomes widened and the P wave disappears. Finally, the QRS and T waves merge, forming a sinusoidal complex, and cardiac ...