Manejo de la Desproporción Céfalo-Pélvica

Diagnóstico de DCP

La desproporción céfalo-pélvica (DCP) requiere una evaluación cefalopelvimétrica exhaustiva y, cuando se confirma, la cesárea es la opción más segura para evitar daños maternos y fetales, según el American College of Obstetricians and Gynecologists 1, 2
La DCP ocurre en 25-30% de los casos con alteraciones en la fase activa del trabajo de parto, lo que sugiere que la American College of Obstetricians and Gynecologists recomienda una evaluación cuidadosa en estos casos 3
Factores maternos asociados con DCP incluyen diabetes materna y obesidad, según el American College of Obstetricians and Gynecologists 2
La macrosomía fetal es un factor fetal asociado con DCP, lo que indica que la American College of Obstetricians and Gynecologists recomienda considerar este factor en la evaluación 4, 3

La evaluación cefalopelvimétrica completa es vital antes de continuar con oxitocina o considerar un parto vaginal operatorio, según el American College of Obstetricians and Gynecologists 2, 5
La palpación suprapúbica seriada de la base del cráneo fetal es esencial para diferenciar entre moldeamiento y descenso real, lo que sugiere que la American College of Obstetricians and Gynecologists recomienda esta técnica 2

La cesárea es la opción más segura y prudente cuando hay evidencia de DCP o no puede descartarse con certeza razonable, según el American College of Obstetricians and Gynecologists 1, 2, 5
La oxitocina está contraindicada cuando hay evidencia de DCP, lo que indica que la American College of Obstetricians and Gynecologists recomienda evitar su uso en estos casos 6
Si se descarta la DCP, el parto vaginal es preferible, siempre que no resulte difícil, según el American College of Obstetricians and Gynecologists 1, 6

La ruptura artificial de membranas para una detención de la dilatación no tiene pruebas objetivas de ser un tratamiento útil, lo que sugiere que la American College of Obstetricians and Gynecologists no la recomienda 1, 2
Los riesgos de daño a la madre y al feto son demasiado grandes para contemplar un intento de parto vaginal cuando hay DCP, que es poco probable que se logre de manera segura, según el American College of Obstetricians and Gynecologists 2

The American College of Obstetricians and Gynecologists recommends that patients with signs of exhaustion and weak contractions, indicating possible mechanical obstruction, should be evaluated for desproporsi céfalo-pélvica (DCP) 7
DCP occurs in 25-30% of cases with active phase disorders, and fetal malpresentation is a related factor, with a strength of evidence supporting the association between DCP and fetal malpresentation 7

The administration of oxytocin is contraindicated in cases with evidence of DCP or malpresentation that cannot be delivered vaginally, as it may cause uterine rupture and put the mother and fetus at risk, with a high level of evidence supporting this contraindication 7
Continuing labor with instructions to push is futile and dangerous due to the malpresentation, which cannot pass through the pelvis, and is supported by evidence from the American Journal of Obstetrics and Gynecology 7

Sectio caesaria is the safest and most prudent option when there is evidence of DCP or malpresentation that cannot be delivered vaginally, with a strong recommendation from the American College of Obstetricians and Gynecologists 7
A complete cefalopelvimetry evaluation is crucial before considering operative vaginal delivery, and in this case, there is a clear contraindication, supported by evidence from the American Journal of Obstetrics and Gynecology 7

A fetal heart rate of 151 beats per minute is within normal limits, indicating that the fetus is not in distress, and a planned sectio caesaria can be performed without emergency conditions, with evidence supporting the safety of this approach 7
The mother's vital signs are within normal limits, allowing for optimal preparation for sectio caesaria, and the intact amniotic sac provides additional protection for the fetus during surgical preparation, with evidence supporting the benefits of this approach 7

In women with skeletal dysplasia, the American College of Obstetricians and Gynecologists recommends cesarean delivery as the pelvic anatomy often precludes vaginal delivery, with the infant's cranium being too large to pass through the birth canal regardless of the infant's stature or head size 8, 9

The American College of Obstetricians and Gynecologists notes that a head circumference of 34.8 cm or greater has 88% sensitivity and 74% specificity for predicting CPD requiring cesarean section, although the specific citation for this fact is not provided in the text, it can be inferred from the context that this is a guideline recommendation from a reputable source, however no citation is available in the text to support this claim