Table 1.
Comparisons of EKG profiles among different sources of EV71 viruses via different routes of inoculation.
| Routes & EV71 viral strains |
EKG phenotypes | Incidence (%) | possible causes | references |
|---|---|---|---|---|
| Oral, F6 (infectious clone) | PR segment depression | 4/7 (57%) | acute perimyocarditis | 31,32 |
| irregular heart rate | 2/7 (29%) | supraventricular event (SVE), sinus arrhythmia | 33 | |
| ST elevation | 2/7 (29%) | myocardial infarction | 34 | |
| split of P wave | 1/7 (14%) | atrial enlargement, dilated cardiomyopathy | 35 | |
| at least one EKG phenotype | 5–7/7 (>70%) | |||
| Oral, F23 (clinical isolate) | irregular heart rate | 2/4 (50%) | atrial premature contraction | 33 |
| lower or no R amplitude | 1/4 (25%) |
age-related heart mass loss, old myocardial infarction |
35,36 | |
| split of P wave | 1/4 (25%) | atrial enlargement, dilated cardiomyopathy | 35 | |
| ST elevation | 2/4 (50%) | myocardial infarction | 34 | |
| Decreased P wave | 1/4 (25%) | atrial rhythm | 33 | |
| at least one EKG phenotype | 4/4 (100%) | |||
| i.p., F6 (infectious clone) | no abnormality detected | 4/5 (80%) | healthy | |
| Irregular heart rate | 1/5 (20%) | |||
| i.p., F23 (clinical isolate) | no abnormality detected | 4/5 (80%) | healthy | |
| Minor arrhythmia | 1/5 (20%) |