Decreased blood flow from mother to placenta And Decreased blood flow from placenta to fetus

Описание: 🌟 Decreased Blood Flow in the Maternal–Placental–Fetal Unit
The placenta is the critical interface between mother and fetus, ensuring oxygen and nutrient delivery. Any disruption in blood flow — either from mother to placenta or from placenta to fetus — can lead to fetal hypoxia and birth asphyxia.

🩺 1. Decreased Blood Flow from Mother to Placenta
This refers to impaired uteroplacental circulation.
Causes:

Maternal hypotension (shock, hemorrhage, anesthesia complications).

Hypertensive disorders (preeclampsia, eclampsia).

Placental abruption (premature separation).

Uterine hyperstimulation (excessive contractions).

Severe maternal anemia or hypoxemia.

Effects:

Reduced oxygen delivery to placenta.

Fetal hypoxia and acidosis.

Risk of intrauterine growth restriction (IUGR) and stillbirth.

🩺 2. Decreased Blood Flow from Placenta to Fetus
This refers to impaired fetoplacental circulation.
Causes:

Umbilical cord accidents: prolapse, compression, true knots, nuchal cord.

Placental insufficiency (structural or vascular abnormalities).

Thrombosis or stricture of umbilical vessels.

Oligohydramnios (less cushioning → cord compression).

Effects:

Intermittent or sustained fetal hypoxia.

Abnormal fetal heart rate patterns (variable or late decelerations).

Risk of acute birth asphyxia during labor.

⚠️ Clinical Importance
Both pathways of reduced blood flow can cause fetal acidosis, low Apgar scores, and hypoxic-ischemic encephalopathy (HIE).

Continuous fetal monitoring (CTG, Doppler studies) is essential to detect compromise.

Timely obstetric intervention (e.g., cesarean section) can prevent severe outcomes

#Bloodflow