Childbirth emergencies

Chapter 44
Childbirth emergencies


Angus M. Jameson and Micha Campbell


General considerations and resource management


Out-of-hospital deliveries not attended by physicians or midwives are a rare occurrence, comprising less than 2% of all births in the US [1]. The majority of out-of-hospital deliveries encountered by EMS personnel are uncomplicated vertex presentations and require only routine supportive care of both mother and neonate [1–3]. Maternal risk factors for unattended out-of hospital delivery include younger maternal age, multiparity, and poor prenatal care [3]. These same risk factors are associated with not only prematurity but higher incidence of fetal morbidity and mortality [3]. Literature over the last two decades shows a trend towards increasing numbers of unattended out-of-hospital deliveries and an increasing medicolegal burden of such cases [1]. It is imperative that medical directors provide robust training, protocol, and direct medical oversight support to crews managing out-of-hospital births.


Due to the low frequency and high-risk nature of unattended out-of-hospital births, along with the significant emotional component of these situations for both patient and provider, catastrophic outcomes are possible and do occur. It is important for EMS personnel to realize that the same risk factors that contribute to unattended out-of-hospital birth also contribute to prematurity (often extreme) and neonatal morbidity. Some complications are not amenable to successful resolution within the scope of practice of prehospital providers and will necessitate temporizing measures and rapid transport. The most practical approach is to focus training on the methodical application of interventions within the scope of care and whenever possible to expedite transport to an appropriate receiving facility.


Resource management at the scene of an unattended out-of-hospital childbirth also presents challenges as there will be at minimum two patients for the prehospital personnel to manage. As the proportion of overall pregnancies involving multiple gestations continues to rise, it is reasonable to expect EMS personnel to encounter increasing numbers of multiple birth situations, further complicating resource management. The request for additional resources, if available, should be made as soon as a multiple gestation birth, an abnormal presentation, or other childbirth emergency is identified. In some systems mother and neonate may also require transport to separate receiving facilities. Finally, given the emotionally charged nature of an out-of-hospital childbirth, attention must be paid to caring for other family members or loved ones on scene to ensure not only their support but also that they do not interfere with the provision of appropriate care.


Management of abnormal presentations


Umbilical cord prolapse


Umbilical cord prolapse is a rare complication characterized by an umbilical cord descending through the cervix prior to the presenting fetal part, and may lead to fetal distress if the fetus compresses the cord as it subsequently traverses the birth canal. Incidence of prolapsed unbiblical cord has been variously reported but is generally felt to occur in approximately 0.5–1% of all deliveries [4–6]. Although no specific data have been offered on the incidence of prolapsed umbilical cords encountered in the prehospital environment, it is reasonable to expect a rate generally similar to overall incidence.


Risk factors for prolapsed cord include abnormal presentation of the fetus (particularly breech), lack of prenatal care, twinning (particularly the second-born twin), and gestational diabetes/macrosomia [4,5]. The presence of a prolapsed cord is associated with lower Apgar scores and increased perinatal mortality, and it is imperative that the prehospital provider assesses for this potentially disastrous condition by visualizing the perineum. For crews with advanced fetal monitoring capability, unexplained fetal distress should prompt sterile vaginal exam to assess for the presence of this complication [5,7,8].


Emergency treatment of umbilical cord prolapse centers on the temporizing decompression of cord by elevation of the presenting fetal part followed by rapid delivery to remove the neonatal dependence on umbilical cord blood flow for oxygenation. Using a gloved hand, the provider gently elevates the presenting part. The exposed cord may be covered in a moist sterile towel. If Doppler is not available to assess cord blood flow, an attempt may be made detect pulsation in the cord; however, this may be faint and care must be taken to avoid further manual compression of the cord during palpation [7,8]. Because prolapsed cord is associated with abnormal presentations, rapid completion of delivery, particularly in the prehospital setting, may be less likely. Providers should expedite transport if at all possible in these situations while attempting to preserve cord blood flow via manual elevation of the presenting part as described above and positioning of the mother in the knee-to-chest position or steep Trendelenburg to aid in reducing pressure on the cord [8]. Most often, cesarean section is undertaken to expedite delivery once at the hospital [4,5,8].


Breech

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Jun 14, 2016 | Posted by in EMERGENCY MEDICINE | Comments Off on Childbirth emergencies

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