Definition
1. Head hyperextended, with brow as presenting part
Pathophysiology
1. Normal Attitude: Fetus is in full flexion
  1. Smallest fetal head diameter: Suboccipitobregmatic
2. Brow Presentation is an extended attitude
  1. Results in largest head diameter: Occipitomental
  2. Increases diameter 3 cm (24%) over flexed head
  3. May results in Failure to Progress
Epidemiology
1. Incidence: 0.02% of singleton deliveries
Causes
1. Similar to Face Presentation
Signs
1. Digital cervical exam
  1. Forehead features palpable (anterior Fontanel, nose)
Management
1. Ceserean section required in most cases
2. Brow Presentation rarely can deliver vaginally unless:
  1. Spontaneously converts to vertex or Face Presentation
  2. Fetus is very small or Pelvis is very large
3. Do not attempt to convert Brow Presentation to vertex
4. Never apply vacuum extractor to Brow Presentation
5. Do not apply internal scalp electrodes
6. Avoid Oxytocin

Brow presentation (C0233276)
Concepts	Finding (T033)
SnomedCT	267210006, 8014007, 156159007, 267327001, 199372005
English	Brow presentation NOS, brow presentation of fetus (diagnosis), brow presentation of fetus, brow presentation, brow presentation (physical finding), Brow presentation NOS (finding), Brow presentation of fetus, Brow presentation of foetus, Brow presentation, Brow presentation (finding), brow; presentation, presentation; brow
Italian	Presentazione frontale, Presentazione frontale del feto
Dutch	voorhoofdsligging van foetus, voorhoofdsligging foetus, ligging; voorhoofd, voorhoofd; ligging, voorhoofdsligging
French	Présentation du foetus par le front, Présentation du front
German	Stirnlage des Feten, Stirnlage
Portuguese	Apresentação do feto de fronte, Apresentação de fronte do feto, Apresentação do supercílio
Spanish	Presentación fetal de cara, Presentación fetal de frente, presentación de frente, SAI, Brow presentation NOS, Brow presentation, Mentum presentation, presentación cefálica de bregma (hallazgo), presentación cefálica de bregma, Presentación de frente, presentación de frente, SAI (hallazgo), presentación de bregma, SAI (hallazgo), presentación de bregma, SAI
Japanese	胎児額位, 額位, ﾀｲｼﾞｶﾞｸｲ, ｶﾞｸｲ
Czech	Čelní poloha plodu, Čelní poloha
Hungarian	Magzat homloktartása, Foetus homloktartása, Homloktartás
Sources	Derived from the NIH UMLS (Unified Medical Language System)

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This page was written by Scott Moses, MD, last revised on 10/21/2007 and last published on 2/5/2012.

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