When preparing a pregnant patient for delivery
Continuing Education ActivityThere are approximately 3.9 million deliveries in the United States every year. Fortunately, most of these deliveries are appropriately anticipated and occur in the hospital with trained staff. Because deliveries occur so infrequently in the prehospital setting, initial effort should be directed toward getting the mother quickly to a hospital with obstetric and gynecological care. This activity describes prehospital deliveries, their indications, contraindications, and potential complications. Show
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Access free multiple choice questions on this topic. IntroductionThere are approximately 3.9 million deliveries in the United States every year. Fortunately, most of these deliveries are appropriately anticipated and occur with trained staff. Because deliveries occur so infrequently in the prehospital setting, initial effort should be directed toward getting the mother quickly to a hospital with obstetric and gynecological care. There, well-trained providers can deliver the baby in a controlled setting with adequate equipment, and expertise should complications arise. [1] However, there may not always be enough time to get the mother to the appropriate facility. Increased perinatal mortality and morbidity for both neonate and mother have been associated with unplanned prehospital deliveries. [2] Some studies indicate that the causes of perinatal morbidity and mortality are avoidable. [3] For this reason, it is crucial for emergency medical service (EMS) providers to be familiar with the appropriate delivery technique. Anatomy and PhysiologyPelvic Outlet A bony ring formed by the sacrum, ischium, ilium, and pubis. The fetus must pass through this ring during delivery, and its size and shape significantly impact the ease of delivery. Cervix A fibromuscular tubular structure that forms the base of the uterus and leads into the vagina. During labor, it dilates and becomes much thinner, to accommodate the passage of the fetus. Uterus A hollow muscular, pear-shaped shaped structure in a female's lower abdomen/pelvis. During pregnancy, it houses the fetus, placenta, amniotic sac, and fluid and can grow rapidly to accommodate these enlarging structures. During labor, the uterus generates a powerful muscular force that helps expel the baby. Fundus The fundus is the part of the uterus that forms a rounded dome on the top of the uterus. Fundal height is an important measurement for determining the age of the fetus. IndicationsStages of Labor There are 3 stages of labor. Delivery of the fetus occurs in the second stage of labor.
Indications that it is time for the mother to give birth include a strong urge to push, more intense contractions occurring every 2 to 5 minutes, and the fetal head beginning to crown.[4] ContraindicationsThere are few contraindications to delivery. If the mother's labor is progressing to the point that she is about to deliver, there is little the prehospital provider can do to prevent it. If the EMS provider is close to the hospital and wishes to delay delivery until arrival, discouraging the woman from pushing may delay the delivery for a short while. One important relative contraindication to labor that EMS providers should be aware of is umbilical cord prolapse. Umbilical cord prolapse can lead to complications such as hypoxic brain injury and cerebral palsy. If possible, these patients need a Cesarean section and care not available in the prehospital setting. [5] EquipmentFor most uncomplicated deliveries minimal equipment is necessary. Ideally in the prehospital setting, providers should have something to cut and clamp the umbilical cord, and something to dry and stimulate the infant such as a towel. In emergency settings, typical obstetric and gynecological equipment may not be available, but if possible EMS providers should have the following items ready:
PersonnelIn prehospital delivery, the EMS provider must make do with the personnel available. The EMT or paramedic performing the delivery should have at least one assistant. PreparationBefore labor is fully underway, place the mother in the dorsal lithotomy position. To achieve this position, the patient will lay on her back (supine) with her feet/lower legs above her hips. Ideally, the patient would be able to rest her heels in stirrups, but these are rarely available. An assistant or two can instead help hold the patient's legs up. Prior to delivery the vulva/perineum should be cleaned with a sterile saline solution. It is also a useful to tuck a chuck or sterile towel under the mother's buttock as this with help contain products of conception and make for easier cleanup. [6] The dorsal lithotomy position is a common delivery position in Western countries, and delivery can be done in other positions such as left or right lateral decubitus, squatting, or on their hands and knees. TechniqueSecond Stage of Labor Around the time of delivery, the patient will begin experiencing strong contractions around 2 to 4 minutes apart. When the mother is experiencing a contraction, be sure to coach the mother by encouraging her to push for a full 10 seconds, if possible. This process can be quite exhausting for the mother, so generally, the mother is encouraged to push for 3 sets of 10 seconds during a contraction then take a break.[7] Peri-vaginal tears are a common complication of delivery. These occur when the fetal head is forcefully and quickly expelled from the vagina. To prevent lacerations, as the mother is pushing, place one hand on the fetal scalp, applying pressure and allowing for a slower and more controlled expulsion of the fetal head from the vagina. The other hand can be used to place pressure on the perineum, providing this area with support as this is the most common area for a laceration.[8] Once the head is delivered, sweep fingers around the fetal neck feeling for a nuchal cord. If the umbilical cord is felt wrapped around the neck, the cord will need to be reduced. [9] At this point, the shoulders will be delivered, with the head facing the mother's inner thigh, grasp the head and pull downward with gentle traction. This will help release the anterior shoulder from catching on the mother's boney pelvic rim. Then gently pull upward releasing the posterior shoulder. From here, the passage of the rest of the body should happen quickly and spontaneously, with little effort on the provider's part.[10] Next, clamp and cut the umbilical cord. There is no rush for the prehospital provider to clamp or deliver the placenta. It is advised to wait at least 30 seconds before clamping the cord; this allows for autotransfusion of some of the placental blood into the neonate.[11] Generally, it is advised that the proximal umbilical clamp is placed approximately 10 centimeters from the umbilicus. This provides adequate spare cord to place an umbilical catheter if necessary once the neonate reaches the hospital if they require neonatal resuscitation. The second clamp should be placed approximately 5 cm apart from the first, this will allow adequate space to safely cut the umbilical cord with a sharp pair of scissors. [12] The infant is now free from the mother. If available, use a clean towel to dry and stimulate the infant. As it is unlikely that an ambient warmer will be available in the prehospital setting, skin-to-skin contact between child and mother is strongly encouraged. This promotes bonding and helps keep the child warm. Third Stage of Labor After the neonate has been successfully delivered, the placenta must be delivered. This should occur between 5 and 30 minutes after delivery.[13] While waiting for the placenta to deliver, apply gentle traction on the cord. The cord can be quite slippery, so it is best to hold onto the cord with either a needle driver, Kelly forceps, or a hemostat. Applying fundal pressure/uterine massage will stimulate uterine contraction, promoting the placental release and preventing post-partum hemorrhage. The placenta is ready to deliver when the uterus becomes more firm, there is a gush of blood from the vagina, and there is a lengthening of the umbilical cord. These are a consequence of the placenta separating from the uterine wall and beginning its descent.[14] Slowly increase the amount of traction on the cord until the placenta begins to descend. Once the placenta is visible, grab it, continuing to pull downward. Once the placenta is approximately halfway out of the vaginal os, begin to twist the placenta as traction is maintained. This will cause the stringy delicate membranous tail of the placenta to wrap around itself, providing greater structural integrity, preventing retained products of conception. Once the placenta has been delivered, it needs to be inspected for any missings pieces. If the placenta is not intact, the retained products will need to be retrieved to prevent bleeding or later infection.[15] ComplicationsShoulder Dystocia Shoulder dystocia is one of the most common intrapartum pregnancy complications. It occurs when the width of the fetus's shoulders is too broad to fit through the mother's pelvic outlet, resulting in the fetus becoming lodged in the birth canal. This complication is difficult to anticipate, but risk factors include macrosomia, maternal diabetes, maternal obesity, and fetal postdates. It is important to quickly recognize and treat this complication because prolonged dystocia can result in fetal asphyxiation, clavicle fracture, and brachial plexus injury.[16] The presence of a "turtle sign" can identify shoulder dystocia. This phenomenon is where the fetal head enters and retracts from the vaginal canal, like a turtle sticking its head out of its shell. This occurs because as the mother pushes, the fetal head is expelled, but because the fetal shoulders are stuck behind the pelvic rim when the mother stops pushing the head gets pulled back into the vaginal canal.[17] There are several maneuvers to resolve the dystocia. In the McRoberts maneuver, from the lithotomy position, forcefully push the mother's thigh's back onto her abdomen/chest, resulting in hyperflexion at the hips. This moves the pubic symphysis up and back allowing more room for the passage of the anterior shoulder. If this is not sufficient, with the fist, one can apply downward suprapubic pressure. In this location, the EMS provider's fist should be directly over the anterior shoulder, thus pushing it down and freeing it from obstruction.[18] Umbilical Cord Prolapse Cord prolapse is when during delivery, a loop of the umbilical cord begins to stick out past the fetus. This usually occurs when the body of the fetus does not fill the birth canal. Thus, there is room for the umbilical cord to slip out. This is concerning because as the delivery progresses the body of the fetus can compress the cord, inhibiting oxygenated blood from getting to the baby. These patients should be taken to a facility capable of performing the cesarian section. If umbilical prolapse occurs, instruct the mother to stop pushing, and place the mother in Trendelenburg position. Attempt to lift the presenting fetal part (usually the head) off of the umbilicus and hold it up until patient care can be handed off at the hospital.[5] Postpartum Hemorrhage Postpartum hemorrhage is when the mother loses more than 500 mL of blood after the vaginal delivery of the baby.[19] It is one of the main causes of pregnancy-related maternal death worldwide.[20] There are many causes of postpartum hemorrhage, and much of the treatment involves getting the patient to a hospital with sufficient OB/GYN resources, but there are a number of things the prehospital provider can do to help in this situation. Just as if this was a hemorrhage from trauma, it is important for prehospital personnel to take the patient's vitals, establish IV access, and administer fluids if necessary. The most common cause of postpartum hemorrhage is uterine atony. Normally, the uterus begins to contract after the baby has been successfully delivered spontaneously. Thus, the myometrium effectively clamps down on the spiral arteries preventing further blood loss. Vigorous massage of the uterine fundus can be implemented to help initiate uterine contraction. If this is insufficient, bimanual uterine massage can be done by placing one hand in the vagina and the other on the abdomen over the fundus and compressing the uterus between the hands.[21] Clinical SignificanceWhile prehospital deliveries are uncommon procedures for EMTs and paramedics, it is important to be familiar with the proper delivery technique. This will help the provider remain calm during the procedure. For the most part, uncomplicated deliveries will happen with little effort. Key aspects of the delivery are controlling the expulsion of the fetal head and delivery of the anterior shoulder. Quickly place the baby on the mother's chest, because skin-to-skin contact will prevent fetal hypothermia. EMS providers should also be able to troubleshoot some of the more common pregnancy complications such as shoulder dystocia, umbilical cord prolapse, and post-partum hemorrhage. Enhancing Healthcare Team OutcomesBecause deliveries occur so infrequently in the prehospital setting, initial effort should be directed toward getting the mother quickly to a hospital with obstetric and gynecological care. There, well-trained providers can deliver the baby in a controlled setting with adequate equipment, and expertise should complications arise. However, there may not always be enough time to get the mother to the appropriate facility, for this reason, it is crucial for emergency medical service (EMS) providers to be familiar with the appropriate delivery technique. [1] Only EMS staff trained in obstetrics should attempt delivery in the field; the risk of litigation is high if a complication was to occur. Thus, the aim should always be to deliver the mother to the nearest hospital. Anecdotal reports suggest that the EMS delivery of infants is safe and relatively free of complications in most cases.[22] [Level 5] Review QuestionsReferences1.Josephsen JB, Kemp J, Elbabaa SK, Al-Hosni M. Life-threatening neonatal epidural hematoma caused by precipitous vaginal delivery. Am J Case Rep. 2015 Jan 30;16:50-2. [PMC free article: PMC4315626] [PubMed: 25633886] 2.Gunnarsson B, Smárason AK, Skogvoll E, Fasting S. Characteristics and outcome of unplanned out-of-institution births in Norway from 1999 to 2013: a cross-sectional study. Acta Obstet Gynecol Scand. 2014 Oct;93(10):1003-10. [PubMed: 25182192] Flanagan B, Lord B, Barnes M. Is unplanned out-of-hospital birth managed by paramedics 'infrequent', 'normal' and 'uncomplicated'? BMC Pregnancy Childbirth. 2017 Dec 22;17(1):436. [PMC free article: PMC5741876] [PubMed: 29273024] 4.Le Ray C, Fraser W, Rozenberg P, Langer B, Subtil D, Goffinet F., PREMODA Study Group. Duration of passive and active phases of the second stage of labour and risk of severe postpartum haemorrhage in low-risk nulliparous women. Eur J Obstet Gynecol Reprod Biol. 2011 Oct;158(2):167-72. [PubMed: 21640464] 5.Mercado J, Brea I, Mendez B, Quinones H, Rodriguez D. Critical obstetric and gynecologic procedures in the emergency department. Emerg Med Clin North Am. 2013 Feb;31(1):207-36. [PubMed: 23200333] 6.Gupta JK, Sood A, Hofmeyr GJ, Vogel JP. Position in the second stage of labour for women without epidural anaesthesia. Cochrane Database Syst Rev. 2017 May 25;5:CD002006. [PMC free article: PMC6484432] [PubMed: 28539008] 7.Zhang J, Landy HJ, Ware Branch D, Burkman R, Haberman S, Gregory KD, Hatjis CG, Ramirez MM, Bailit JL, Gonzalez-Quintero VH, Hibbard JU, Hoffman MK, Kominiarek M, Learman LA, Van Veldhuisen P, Troendle J, Reddy UM., Consortium on Safe Labor. Contemporary patterns of spontaneous labor with normal neonatal outcomes. Obstet Gynecol. 2010 Dec;116(6):1281-1287. 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[PubMed: 29097178] 12.Tolcher MC, El-Nashar SA, Famuyide AO. Association of the Duration of Active Pushing With Obstetric Outcomes. Obstet Gynecol. 2016 Aug;128(2):406-407. [PubMed: 27454715] 13.Dombrowski MP, Bottoms SF, Saleh AA, Hurd WW, Romero R. Third stage of labor: analysis of duration and clinical practice. Am J Obstet Gynecol. 1995 Apr;172(4 Pt 1):1279-84. [PubMed: 7726270] 14.Culliney EM, Williams PM. Controlled Cord Traction During the Third Stage of Labor. Am Fam Physician. 2016 Mar 01;93(5):Online. [PubMed: 26926982] 15.Gülmezoglu AM, Lumbiganon P, Landoulsi S, Widmer M, Abdel-Aleem H, Festin M, Carroli G, Qureshi Z, Souza JP, Bergel E, Piaggio G, Goudar SS, Yeh J, Armbruster D, Singata M, Pelaez-Crisologo C, Althabe F, Sekweyama P, Hofmeyr J, Stanton ME, Derman R, Elbourne D. Active management of the third stage of labour with and without controlled cord traction: a randomised, controlled, non-inferiority trial. Lancet. 2012 May 05;379(9827):1721-7. 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[PubMed: 10155399] When preparing a pregnant patient for delivery should position her?All pregnant patients (especially full-term patients in labor) should be placed on their left side at 15° to avoid supine hypotensive syndrome, which occurs when the gravid uterus lies on and occludes the inferior vena cava, decreasing blood return to the heart and resulting in hypotension.
What preparation is needed for delivery?Items the Hospital Will Need from You
Health plan insurance card. Hospital admissions papers (you may have to be pre-admitted) Pregnancy medical file, including over-the-counter and prescription medicine information. Birth preferences.
What is the preparation for the laboring mother?The most important thing parents-to-be can do to prepare for labor and delivery is to take a childbirth class. The choices are wide and varied, but most cover relaxation techniques, how to breathe, various labor positions, pain relief options and some tips related to basic newborn care.
What happens first in the preparation for childbirth?The first phase of the first stage of labour is called the latent phase. This is the longest phase and can last for many hours or even days. Your cervix becomes thinner and begins to open in preparation for the birth of your baby. During this phase, you may have regular or irregular contractions.
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