Fetal Tachycardia

Aka: Fetal Tachycardia, FHR Tachycardia

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II. Definitions

  1. Fetal Tachycardia
    1. Fetal Heart Rate >160 bpm for >=10 minutes

III. Causes: Mild Fetal Tachycardia (FHR 160-180 bpm)

  1. Usually benign if normal FHR Variability or accelerations (spontaneous or stimulated)
  2. Maternal Causes
    1. Maternal Fever or infection
    2. Maternal Dehydration
    3. Maternal anxiety
    4. Maternal Ketosis
    5. Maternal Thyrotoxicosis
    6. Maternal Anemia
    7. Medications
      1. Anticholinergic Medications (e.g. Benadryl)
      2. Sympathomimetic medications (e.g. Terbutaline)
      3. Stimulants
  3. Fetal Causes
    1. Fetal Anemia
    2. Prolonged fetal movement
    3. Severely Preterm Fetus
    4. Cardiac anomalies
    5. Chronic Fetal Hypoxia

IV. Causes: Significant Fetal Tachycardia (FHR >180 bpm)

  1. Chorioamnionitis (especially if Maternal Fever)
  2. Fetal Arrhythmia or congenital defect (FHR >200 bpm)

V. References

  1. Bailey (2000) ALSO, E:1-13
  2. Gabbe (2002) Obstetrics, p. 395
  3. Arnold (2020) Am Fam Physician 102(3): 158-67 [PubMed]
  4. Rylander (2001) Clin Fam Pract 3(2):287-305 [PubMed]

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Related Studies

Ontology: Fetal tachycardia (C0410918)

Definition (NCI) A fetal heart rate above 160 bpm that is sustained for longer than 10 minutes.(NICHD)
Concepts Sign or Symptom (T184)
SnomedCT 199590007, 240298005
Italian Tachicardia fetale
Dutch foetale tachycardie, tachycardiie, foetaal, tachycardie foetaal
German fetale Tachykardie, Tachykardie fetal
Japanese 胎児頻脈, ﾀｲｼﾞﾋﾝﾐｬｸ
English fetal tachycardia (diagnosis), fetal tachycardia, Tachycardia fetal, Foetal tachycardia, Tachycardia foetal, Fetal Tachycardia, Baseline Fetal Tachycardia, Fetal tachycardia, Fetal tachycardia (disorder)
Czech Tachykardie u plodu, Fetální tachykardie
Hungarian Tachycardia, foetalis, Magzati tachycardia, Foetalis tachycardia, Magzati szapora szívverés
Spanish taquicardia fetal (trastorno), taquicardia fetal, Taquicardia fetal
Portuguese Taquicardia fetal
French Tachycardie foetale
Derived from the NIH UMLS (Unified Medical Language System)

Related Topics in Fetal Disorders

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