Figure 1-Figure 4 is a dynamic ECG fragment of the same person.
Figure 1 ECG analysis:
Basic heart rhythm is sinus rhythm . The PP spacing of
R4-R5 PP is 2.96s, prompting 1 sinus arrest .
Figure 2 Electrocardiogram analysis:
basal heart rhythm is sinus rhythm . The PP spacing of
R2-R3, R5-R6 is 2.86s and 2.24s, indicating that sinus arrest .
Figure 3 EKG analysis:
basal heart rhythm is sinus rhythm . The PP spacing between
R3-R4, R4-R5 PP spacing 2s and 2.75s, prompting sinus arrest .
Figure 5 ECG analysis:
basal heart rhythm is sinus rhythm .
R2, R8, R12, R16, R20 are insertion ventricular premature beats.
P7P8 interval is exactly twice that of the short PP interval. Considering that it is caused by P wave leakage, it indicates that second-degree type II sinoatrial block .
Related knowledge points:
1. Sinusatrial block
Unlike sinus arrest, sinusatrial block refers to the temporary block of the impulse of the sinusatrial node, that is, the impulse generated by the sinusatrial node cannot reach the atrium, causing atrial and ventricular arrest. Sinusatrial block can be divided into one degree, second degree and third degree according to its degree of block.
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2nd-degree sinus atrial block
1.2nd-degree sinus atrial block Typical second-degree sinus atrial block:
①Sinus atrial conduction time gradually prolongs, and the PP cycle is gradually shortened. Then, sinus arousal is blocked in the sinus atrial junction area, and a long sinus P-P cycle appears.
②Long P-P period is less than the sum of two short sinus P-P periods. ③The first P-P period at the beginning of the Wen period is the longest of all short P-P periods. ④The last 1 short P-P period in the Wen period is the shortest of all short P-P periods. The above phenomenon repeats over and over again, and the
2.2.2.2.2.2.2. A series of regular sinus P-P periods, a P wave suddenly occurs, resulting in a long P-P period, which is exactly the sum of the two sinus rhythm periods. Second-degree type 1 sinus atrial block may be frequent or occasional
3. Sinus arrest
transient sinus arrest seems to be second-degree sinus atrial block. The difference is that the long P-P intervals caused by sinus arrest are not equal to each other and are not multiples of normal sinus P-P interval. The long P-P interval produced by second-degree sinoatrial block is a simple multiple of the short P-P interval.
High-term sinus arrest and complete sinus block are not easily distinguished. It is generally believed that there is short sinus arrest before permanent sinus arrest, and the atrial pacing point is also inhibited at the same time, so it is less accompanied by atrial ejaculation and atrial ejaculation rhythm.
Complete sinoatrial block develops from sinoatrial block above second degree. There may be atrial and atrial and atrial and atrial and cardiac rhythm on the electrocardiogram.
ECG diagnosis:
long sinus PP interval is more than twice that of the basic sinus PP interval. The long PP interval caused by arrest is not equal to each other, and is not an integer multiple of the basic sinus PP interval.
