Trauma in pregnancy: Difference between revisions
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*For maternal vitals see [[Maternal Vitals and Labs in Pregnancy]] | *For maternal vitals see [[Maternal Vitals and Labs in Pregnancy]] | ||
===Risk Factors for Severity(ATLS)=== | ===Risk Factors for Severity ([[ATLS]])=== | ||
*Maternal heart rate > 100 | *Maternal heart rate > 100 | ||
*Injury Severity Score > 9 | *Injury Severity Score > 9 | ||
Line 16: | Line 16: | ||
*Motorcycle or pedestrian collisions | *Motorcycle or pedestrian collisions | ||
== | ==Assessment== | ||
*Airway | |||
**Prepare for potentially difficult airway | |||
***Increased soft tissue edema, breast enlargement, weight gain | |||
**Pregnant women at increased risk of aspiration due to delayed gastric emptying | |||
**Failed intubations 8 times more likely in pregnant trauma patients | |||
== | *Breathing | ||
**Increased basal O2 requirement | |||
**Fetus is highly sensitive to maternal hypoxia | |||
***Keep maternal SpO2 >95% | |||
**Some recommend placement of thoracostomy tube 1-2 intercostal spaces higher than usual, when indicated<ref>Tsuei B. Assessment of the pregnant trauma patient. Injury 2006; 37(5)367-373</ref> | |||
*Circulation | |||
**Fluid and blood product resuscitation should proceed according to ATLS | |||
**Placenta is highly responsive to vasopressors and can result in decreased placental perfusion | |||
**Compression of IVC by gravid uterus can decreased CO by 30% | |||
***If must be kept supine, allow patient to lay in left lateral position | |||
***May also manually displace uterus to the left if patient must be kept on backboard | |||
**Fetal risks from defibrillation of mother are small | |||
==Complications== | |||
*[[Uterine rupture]] | |||
**more common with direct abdominal trauma in second half of pregnancy | |||
**Occurs in severe MVAs resulting in pelvic fractures, penetrating trauma | |||
**Signs and Sx | |||
***maternal [[shock]] | |||
***abdominal distension | |||
***abnormal uterine contour | |||
***abnormal fetal lie (oblique or transverse) | |||
***palpable fetal parts | |||
***sudden abnormal FHR pattern | |||
***Ascent of fetal presenting part | |||
*[[Placental Abruption]] | |||
**Most common cause of fetal demise in blunt trauma | |||
**US on not sensitive → do not delay treatment for [[ultrasound]] if abruption suspected | |||
**Signs and Sx | |||
***abdominal pain | |||
***uterine tenderness | |||
***vaginal bleeding (70%, may be absent if retroplacental) | |||
***Uterine contractions or hypertonicity | |||
***Signs of fetal distress on toco monitor are often the earliest indicator | |||
****decelerations, tachycardia, bradycardia, and loss of variability | |||
*[[Preterm labor]] | |||
**Trauma in pregnancy is associated with 2x higher risk of preterm delivery | |||
* | |||
* | |||
==Differential Diagnosis== | |||
{{Abdominal trauma DDX}} | |||
==Evaluation== | |||
* | *Trauma labs | ||
*Rh factor | |||
*Coag studies | |||
*[[D-dimer]] | |||
*Fibrinogen | |||
*[[FAST]] - sensitivity similar to non-pregnant trauma population | |||
*Radiographic imaging as directed by [[ATLS]] assesment<ref>Edmonton V, Edmonton R, Maslovitz S, et al. Guidelines for the Management of Pregnant Trauma Patient. J Obset Gynaecol Can 2015. 37(6):553-571</ref> | |||
**Radiographic imaging should not be delayed or deferred due to concern for fetal radiation exposure in the trauma setting | |||
*Tocographic and fetal monitoring - '''VEAL CHOP''' | |||
**'''V'''ariable - '''C'''ord compression | |||
**'''E'''arly - '''H'''ead compression | |||
**'''A'''ccelerations - '''O'''kay | |||
**'''L'''ate - '''P'''lacental insufficiency | |||
==Treatment & Disposition== | ==Treatment & Disposition== | ||
Line 38: | Line 87: | ||
*Nonviable fetus (<23-24wks) | *Nonviable fetus (<23-24wks) | ||
**Standard treatment for trauma | **Standard treatment for trauma | ||
**Consider RhoGAM 50mcg in | ***No obstetric intervention will alter the outcome of a pre-viable fetus | ||
**Consider [[RhoGAM]] 50mcg in Rh negative patients | |||
*Viable fetus (>23-24wks) | *Viable fetus (>23-24wks) | ||
**Consider RhoGAM 300mcg in | **Consider RhoGAM 300mcg in Rh negative patients | ||
**Avoid pressors - compromises blood flow to uterus leading to decreased fetal O2 delivery | **Avoid pressors - compromises blood flow to uterus leading to decreased fetal O2 delivery | ||
** | **Fetal monitoring (continuous cardiotocographic monitoring) | ||
** | ***If no risk factors for fetal loss, minimum 4-6 hours | ||
***The duration of cardiotocographic monitoring should be extended to 24 hours if, during the first 4 hours, she develops > 4 contractions per hour, persistent uterine tenderness, a worrisome fetal monitor strip, vaginal bleeding, or rupture of the membranes. <ref>Pearlman MD, Tintinalli JE, Lorenz RP. A prospective controlled study of outcome after trauma during pregnancy. Am J Obstet Gynecol. 1990;162:1502–10.</ref> | ***If risk factors for fetal loss/abruption, monitor for 24 hours | ||
****The duration of cardiotocographic monitoring should be extended to 24 hours if, during the first 4 hours, she develops > 4 contractions per hour, persistent uterine tenderness, a worrisome fetal monitor strip, vaginal bleeding, or rupture of the membranes. <ref>Pearlman MD, Tintinalli JE, Lorenz RP. A prospective controlled study of outcome after trauma during pregnancy. Am J Obstet Gynecol. 1990;162:1502–10.</ref> | |||
* | *Allow patient to roll onto left side to unload uterine compression of IVC → increases venous return to heart | ||
*In the setting of maternal cardiac arrest, consider [[Perimortem cesarean delivery|Perimortem Cesarean delivery]] if no ROSC within 4 minutes | |||
===Abnormal Monitoring=== | ===Abnormal Monitoring=== | ||
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*Persistent uterine TTP | *Persistent uterine TTP | ||
*Worrisome strip | *Worrisome strip | ||
* | *Vaginal bleeding | ||
*PROM | *PROM | ||
*Serious maternal injury | *Serious maternal injury | ||
Partial abruption | Partial abruption with stable mom/fetus and <32wk may have expectant care (with easy access to emergent C-section) | ||
Abruption = risk DIC | [[Abruption]] = risk [[DIC]] | ||
*Frequent uterine activity more predictive of abruption than US | *Frequent uterine activity more predictive of abruption than US | ||
Line 75: | Line 125: | ||
*[[Abruption]] | *[[Abruption]] | ||
*[[Maternal Vitals and Labs in Pregnancy]] | *[[Maternal Vitals and Labs in Pregnancy]] | ||
*[[Trauma (main)]] | |||
*[[Pregnancy (main)]] | |||
==References== | ==References== |
Revision as of 23:57, 6 March 2021
Background
- Concern for trauma, premature labor, and abruption
- Viable = >23-24wk (~fundus above umbilicus)
- nl FHR = 110-160 beats/min
- The leading cause of death in women during their reproductive years
- The leading non-obstetric cause of death and disability in pregnant women
- Trauma or accidental injury complicates up to 7% of all pregnancies
- For maternal vitals see Maternal Vitals and Labs in Pregnancy
Risk Factors for Severity (ATLS)
- Maternal heart rate > 100
- Injury Severity Score > 9
- Evidence of placental abruption
- Fetal heart rate > 160 or <120
- Ejection during a motor vehicle crash
- Motorcycle or pedestrian collisions
Assessment
- Airway
- Prepare for potentially difficult airway
- Increased soft tissue edema, breast enlargement, weight gain
- Pregnant women at increased risk of aspiration due to delayed gastric emptying
- Failed intubations 8 times more likely in pregnant trauma patients
- Prepare for potentially difficult airway
- Breathing
- Increased basal O2 requirement
- Fetus is highly sensitive to maternal hypoxia
- Keep maternal SpO2 >95%
- Some recommend placement of thoracostomy tube 1-2 intercostal spaces higher than usual, when indicated[1]
- Circulation
- Fluid and blood product resuscitation should proceed according to ATLS
- Placenta is highly responsive to vasopressors and can result in decreased placental perfusion
- Compression of IVC by gravid uterus can decreased CO by 30%
- If must be kept supine, allow patient to lay in left lateral position
- May also manually displace uterus to the left if patient must be kept on backboard
- Fetal risks from defibrillation of mother are small
Complications
- Uterine rupture
- more common with direct abdominal trauma in second half of pregnancy
- Occurs in severe MVAs resulting in pelvic fractures, penetrating trauma
- Signs and Sx
- maternal shock
- abdominal distension
- abnormal uterine contour
- abnormal fetal lie (oblique or transverse)
- palpable fetal parts
- sudden abnormal FHR pattern
- Ascent of fetal presenting part
- Placental Abruption
- Most common cause of fetal demise in blunt trauma
- US on not sensitive → do not delay treatment for ultrasound if abruption suspected
- Signs and Sx
- abdominal pain
- uterine tenderness
- vaginal bleeding (70%, may be absent if retroplacental)
- Uterine contractions or hypertonicity
- Signs of fetal distress on toco monitor are often the earliest indicator
- decelerations, tachycardia, bradycardia, and loss of variability
- Preterm labor
- Trauma in pregnancy is associated with 2x higher risk of preterm delivery
Differential Diagnosis
Abdominal Trauma
- Abdominal compartment syndrome
- Diaphragmatic trauma
- Duodenal hematoma
- Genitourinary trauma
- Liver trauma
- Pelvic fractures
- Retroperitoneal hemorrhage
- Renal trauma
- Splenic trauma
- Trauma in pregnancy
- Ureter trauma
Evaluation
- Trauma labs
- Rh factor
- Coag studies
- D-dimer
- Fibrinogen
- FAST - sensitivity similar to non-pregnant trauma population
- Radiographic imaging as directed by ATLS assesment[2]
- Radiographic imaging should not be delayed or deferred due to concern for fetal radiation exposure in the trauma setting
- Tocographic and fetal monitoring - VEAL CHOP
- Variable - Cord compression
- Early - Head compression
- Accelerations - Okay
- Late - Placental insufficiency
Treatment & Disposition
Assessment and stabilization of the mother should take first priority
- Nonviable fetus (<23-24wks)
- Standard treatment for trauma
- No obstetric intervention will alter the outcome of a pre-viable fetus
- Consider RhoGAM 50mcg in Rh negative patients
- Standard treatment for trauma
- Viable fetus (>23-24wks)
- Consider RhoGAM 300mcg in Rh negative patients
- Avoid pressors - compromises blood flow to uterus leading to decreased fetal O2 delivery
- Fetal monitoring (continuous cardiotocographic monitoring)
- If no risk factors for fetal loss, minimum 4-6 hours
- If risk factors for fetal loss/abruption, monitor for 24 hours
- The duration of cardiotocographic monitoring should be extended to 24 hours if, during the first 4 hours, she develops > 4 contractions per hour, persistent uterine tenderness, a worrisome fetal monitor strip, vaginal bleeding, or rupture of the membranes. [3]
- Allow patient to roll onto left side to unload uterine compression of IVC → increases venous return to heart
- In the setting of maternal cardiac arrest, consider Perimortem Cesarean delivery if no ROSC within 4 minutes
Abnormal Monitoring
- >3 contractions/hr
- Persistent uterine TTP
- Worrisome strip
- Vaginal bleeding
- PROM
- Serious maternal injury
Partial abruption with stable mom/fetus and <32wk may have expectant care (with easy access to emergent C-section)
- Frequent uterine activity more predictive of abruption than US
- >8 contractions/hr for 4hrs - high risk for abruption
- 3-7 contractions/hr for 4hrs - extend monitoring for 24hrs
- <3 contractions/hr for 4hrs - safe for discharge
External Links
See Also
- Fetal Maternal Hemorrhage (RhoGAM)
- Perimortum C-Section
- Abruption
- Maternal Vitals and Labs in Pregnancy
- Trauma (main)
- Pregnancy (main)
References
- ↑ Tsuei B. Assessment of the pregnant trauma patient. Injury 2006; 37(5)367-373
- ↑ Edmonton V, Edmonton R, Maslovitz S, et al. Guidelines for the Management of Pregnant Trauma Patient. J Obset Gynaecol Can 2015. 37(6):553-571
- ↑ Pearlman MD, Tintinalli JE, Lorenz RP. A prospective controlled study of outcome after trauma during pregnancy. Am J Obstet Gynecol. 1990;162:1502–10.