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| Symptom | Holter ECG records | Ultrasonography findings | Treatment |
| Preconception |
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| 20-year-old | Pulpitation, infrequently | PSVT | Normal | Oral verapamil for a month |
| During pregnancy |
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| 22 GW | Pulpitation, sometimes | Sporadic AVNRT with a maximum duration of 16 minutes | FS 30%, EF 54% | Free of medication |
| 30 GW | Pulpitation, every day | Not recorded | FS 39%, EF 66% | Free of medication |
| 39 GW | Pulpitation, every day | Only 2 minutes’ AVNRT | FS 32%, EF 52% | Free of medication |
| Intrapartum |
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| 1st stage of labor | None | Not recorded | Not measured | Vagal maneuvers, and equipment of intravenous adenosine and direct- current cardioversion |
| 2nd stage of labor | Pulpitation | |||
| Postpartum |
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| One month after childbirth | Pulpitation, infrequently | Normal | FS 36%, EF 60% | Free of medication |