Examkin

Soru

Zorluk: KolayLabor, Delivery, and Puerperium

Match the following fetal heart rate (FHR) monitoring patterns observed during labor to their classic underlying pathophysiologic etiologies.

  • Early decelerationsFetal head compression
  • Variable decelerationsUmbilical cord compression
  • Late decelerationsUteroplacental insufficiency
  • Sinusoidal patternSevere fetal anemia

Cevap

Early decelerations correlate with fetal head compression, variable decelerations with umbilical cord compression, late decelerations with uteroplacental insufficiency, and a sinusoidal pattern with severe fetal anemia.
The correct matches represent foundational knowledge of fetal heart rate interpretation, which can be remembered using the VEAL CHOP mnemonic: Variable = Cord compression, Early = Head compression, Acceleration = Okay, Late = Placental insufficiency. A sinusoidal pattern is an additional, highly specific finding indicating severe fetal anemia.

Adım Adım Çözüm

1
Determine the etiology for early decelerations.
Early decelerations match with fetal head compression.
Head compression during uterine contractions alters vagal tone, causing a gradual FHR deceleration that symmetrically mirrors the contraction.
2
Determine the etiology for variable decelerations.
Variable decelerations match with umbilical cord compression.
Cord compression causes acute hemodynamic changes resulting in abrupt decelerations that vary in timing, depth, and duration.
3
Determine the etiology for late decelerations.
Late decelerations match with uteroplacental insufficiency.
Insufficient placental blood flow during contractions leads to delayed, transient fetal hypoxia, causing late FHR dips.
4
Determine the etiology for a sinusoidal pattern.
A sinusoidal pattern matches with severe fetal anemia.
Loss of autonomic nervous system control due to severe hypoxia or anemia produces this classic undulating waveform.

Anahtar Kavram

Fetal heart rate monitoring patterns and their etiologies (VEAL CHOP)
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Konular

Labor, Delivery, and Puerperium

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