Significats de vacuum extraction en anglès

AoP measurement may help in choosing between forceps and vacuum extraction.

Above this value, the rate of vacuum extraction failure fell below 5%.

One patient had a lesion 4 months following a vacuum extraction and subsequent cephalohematoma formation.

Transperineal ultrasound was performed immediately before vacuum extraction, although AoP was measured on stored images after delivery.

Radiological feature … One patient had a lesion 4 months following a vacuum extraction and subsequent cephalohematoma formation.

Conclusion: AoP is a predictive factor of failed vacuum extraction, especially among nulliparous women whose risk of failure is high.

PMID: 18976110 One patient had a lesion 4 months following a vacuum extraction and subsequent cephalohematoma formation.

As all but one failed vacuum extraction occurred among nulliparous women, the predictive value of AoP was calculated in this subgroup of women.

Methods: This was a prospective observational study that included women with a singleton pregnancy of ≥ 37 weeks' gestation, in cephalic presentation requiring vacuum extraction.

The area under the receiver-operating characteristics curve for prediction of vacuum extraction failure was 0.67 (95% CI, 0.57-0.77) and the optimal AoP cut-off was 145.5°.

Vacuum extraction was defined as failed when the duration of extraction exceeded 20 min or the vacuum cup detached more than three times.