Figure 1 ECG analysis:
P wave appears regularly ( red mark), in Ⅰ , II, III, aVF, avL, V1-6 leads are upright, avR lead is down, the atrial rate is 99bpm, the basic heart rhythm is sinus rhythm
ST segment morphology diversity is because it overlaps with T to varying degrees. .
Some P ( blue mark) in R3, R7, and R11 failed to pass down to the ventricle, which is considered to be the end point of the Vennuri cycle.
R4, R8, and R12 are the starting points of the Venturi cycle, and the PR interval is 0.2s. Subsequent PR interval prolongation indicates second-degree type I atrioventricular block.
ECG diagnosis:
1. Sinus rhythm,
2. Second degree type I atrioventricular block.
Figure 2 ECG analysis:
The basic heart rhythm is sinus rhythm . The ones marked in red in are and P.
The Vennuri cycle of second-degree atrioventricular block may be long or short. Figure 2 is actually part of the cycle of second-degree atrioventricular block, not first-degree atrioventricular block.
Figure 3 ECG analysis:
The basic heart rhythm is sinus rhythm . The ones marked in red are and P.
R4 and P (blue mark) after R15 failed to pass down to the ventricle, which is considered to be the end point of the Vennuri cycle.
R5 and R16 are the starting points of the Venturi cycle, and the PR intervals are 0.4s and 0.24s, suggesting first-degree atrioventricular block.
Figure 4 ECG analysis:
The basic heart rhythm is sinus rhythm .
The P (blue mark) after R3, R8, and R13 failed to pass down to the ventricle, which is considered to be the end point of the Venturi cycle.
R4, R9, and R14 are the starting points of the Venuri cycle.
Figure 5 ECG analysis:
The basic heart rhythm is sinus rhythm .
The P (blue mark) after R2, R8, R17, R25, and R30 failed to pass down to the ventricle, which is considered to be the end point of the Venturi cycle.
R3, R9, R18, R26, R31 are the starting points of the Venn cycle.
Figure 6 ECG analysis:
The basic heart rhythm is sinus rhythm .
The P (blue mark) after R4, R6, R12, and R14 failed to pass down to the ventricle, which is considered to be the end point of the Venturi cycle.
R5, R7, R11, R13, and R15 are the starting points of the Venn cycle.
Figure 7 ECG analysis:
The basic heart rhythm is sinus rhythm .
The P (blue mark) after R4, R6, R12, and R14 failed to pass down to the ventricle, which is considered to be the end point of the Venturi cycle.
R5, R7, R11, R13, and R15 are the starting points of the Venn cycle.
Figure 8 ECG analysis:
The basic heart rhythm is sinus rhythm .
The P (blue mark) after R1, R2, R4, R16, R17, R19, and R20 failed to pass down to the ventricle, which is considered to be the end point of the Venturi cycle.
R3, R5, and R18 are the starting points of the Venuri cycle.
Figure 9 ECG analysis:
The basic heart rhythm is sinus rhythm .
R1, R3, R5, R14, R16, R23 are the starting points of the Venuri cycle. The P (blue mark) after
R2, R4, R13, R15, R22 failed to pass down to the ventricle, which is considered to be the end point of the Vennuri cycle.
Figure 10 ECG analysis:
The basic heart rhythm is sinus rhythm .
R5, R7, and R9 are the starting points of the Venuri cycle.
The P (blue mark) after R4, R6, R8, and R10 failed to pass down to the ventricle, which is considered to be the end point of the Venturi cycle.
Figure 11 ECG analysis:
The basic heart rhythm is sinus rhythm .
The blue mark P failed to pass down to the ventricle, which is considered to be the end point of the Vennuri cycle.
Figure 12 ECG analysis:
R7 appears early, is wide and deformed, has no related P waves before and after, with complete compensatory intervals, is premature ventricular contraction . The compensatory pause of
room early exposes the P wave (red mark) hidden in the T wave .
Figure 13 ECG analysis:
R7 is premature ventricular contraction .
The compensatory pause of premature ventricular disease exposes the P wave (red mark) hidden in the T wave.
scatter plot expresses the regularity of adjacent RR intervals with the position of points. Drawing principle: Taking the adjacent RR periods as the horizontal (x-axis) and vertical (y-axis) coordinates, depict the RR interval scatter set (Rn-Rn-1) of the dynamic electrocardiogram in the plane rectangular coordinate system ,Rn+1-Rn). Since a Lorenz scatter point expresses the regularity of two adjacent RR intervals, involving three adjacent heart beats Rn-1, Rn, and Rn+1, the Lorenz scatter point is a three-beat and two-phase point.
red is the room early point set, purple is the room point set, blue is the sinus point set.
Related knowledge points:
1. Premature ventricular contractions
originate from unprotected premature contractions below the bifurcation of the His bundle, called premature ventricular contractions , also known as premature ventricular contractions.
In addition to premature ventricular septal contractions, the ventricular QRS-T waveform is wide and deformed, and there are no relevant atrial waves before the QRS (except for ventricular fusion waves).
General characteristics:
1, a wide and deformed QRS complex appears in advance with a time of ≥0.12s, and the T wave is in the opposite direction to the main wave.
2, there is no relevant P wave before it, and there are occasional P waves after it.
3, most of them are accompanied by complete compensatory intermittent , and a few are insertive.
