Differential Diagnosis for Uterus Irritable at 21 Weeks
- Single most likely diagnosis
- Preterm labor: This is the most likely diagnosis, as an irritable uterus at 21 weeks can be a sign of preterm labor, which is a common cause of preterm birth.
- Other Likely diagnoses
- Braxton Hicks contractions: These are mild, irregular contractions that can occur during pregnancy, often causing an irritable uterus.
- Uterine distension: As the uterus expands during pregnancy, it can become irritable due to stretching and pressure on the uterine muscles.
- Fetal movement: Increased fetal movement can cause the uterus to become irritable, especially if the fetus is active or in a position that puts pressure on the uterine walls.
- Do Not Miss (ddxs that may not be likely, but would be deadly if missed.)
- Placental abruption: This is a life-threatening condition where the placenta separates from the uterus, causing bleeding and depriving the fetus of oxygen and nutrients.
- Uterine rupture: Although rare, uterine rupture can occur in women with a history of uterine surgery or previous uterine rupture, and can be catastrophic if not promptly diagnosed and treated.
- Intrauterine infection: Infections such as chorioamnionitis can cause an irritable uterus and can be life-threatening to both the mother and the fetus if left untreated.
- Rare diagnoses
- Uterine anomalies: Certain uterine anomalies, such as a unicornuate uterus, can cause an irritable uterus due to abnormal uterine shape or function.
- Uterine fibroids: Although not typically associated with an irritable uterus, large or multiple fibroids can cause uterine irritability, especially if they are degenerating or causing significant uterine distension.