Causes of Preterm Labor Mnemonic

What is a preterm labour?

Preterm labour is the onset of labour before 37 weeks of gestation.

The easy medical mnemonic for medical students for different causes of pre term labour is " Infected Weak MUM Has Pre-Term labour"

@ Infected & Weak MUM Has Pre-term labour

Infections

Weak Cervix

Multiple Pregnancy & Uterine distension

Uterine Anomalies

Maternal or Fetal Stress

Hemorrhage

Infections:

Chorionamnionitis is the infection of fetal membranes and is a major cause of Pre-term birth particularly in < 32 weeks.

Weak Cervix:

Cervical weakness causes PAINLESS dilation of cervix and there is history of PAINLESS 2nd trimester pregnancy loss.

Past history of cervical surgery is a major risk factor.

Multiple Pregnancy & Uterine distension :

Uterine distension by multiple pregnancy or less commonly by polyhydramnios causes Pre-term delivery.

Uterine Anomalies:

Congenital Uterine anomalies are associated with fetal growth retardation, 1st and 2nd trimester miscarriage, PPROM, Preterm birth, Breech presentation and C-section.

Maternal or Fetal Stress are associated with increased pre-term labour.

Hemorrhage:

Antepartum hemorrhage and Placental abruption may cause spontaneous pre-term labour. Thrombin released in acute bleeding directly stimulates uterine contractions.

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