Prehospital Academy Lesson 39.2
Early Pregnancy Considerations
This lesson focuses on critical considerations for the gravid (pregnant) patient, particularly in early pregnancy, within the prehospital setting. Early pregnancy presents unique challenges due to various physiological changes, potential complications, and the vulnerability of the developing fetus. EMTs must be equipped to manage conditions such as substance abuse, cardiac issues, and hypertensive disorders with a nuanced understanding of their impact on both the mother and the fetus.
Substance Abuse in Pregnancy
Illicit drug use during pregnancy poses significant risks as many substances can cross the placental barrier, impacting fetal development and well-being.
Fetal Effects: Birth defects, prematurity, low birth weight, developmental delays, and neonatal abstinence syndrome (withdrawal symptoms in the newborn).
Maternal Effects: Increased risk of complications such as preeclampsia, placental abruption, and infections.
Prehospital Management:
Focus on cardiorespiratory support for the mother.
Treatment of overdose in a pregnant patient is generally similar to that in a non-gravid patient, but with careful consideration of fetal well-being.
Rapid transport to a facility capable of managing both maternal and fetal complications.
Cardiac Conditions in Pregnancy
Pregnancy significantly alters cardiovascular physiology, which can exacerbate pre-existing cardiac conditions or lead to new ones.
Physiological Changes: Increased blood volume, heart rate, and cardiac output; decreased systemic vascular resistance.
Pre-existing Conditions: Patients with a history of dysrhythmias, heart murmurs, rheumatic fever, or congenital heart defects require careful assessment.
Peripartum Cardiomyopathy: An uncommon but serious form of heart failure that develops during the last months of pregnancy or up to five months postpartum.
Prehospital Management:
Position patient on her left side to prevent supine hypotensive syndrome.
Administer high-flow oxygen.
Monitor cardiac rhythm and vital signs closely.
Treat symptoms according to local protocol, consulting medical direction as needed.
Hypertensive Disorders in Pregnancy
Hypertensive disorders are a leading cause of maternal and fetal morbidity and mortality.
Chronic Hypertension: Hypertension (BP ≥ 140/90 mmHg) present before pregnancy or diagnosed before 20 weeks gestation.
Gestational Hypertension: New-onset hypertension after 20 weeks gestation without proteinuria.
Preeclampsia: New-onset hypertension after 20 weeks gestation with proteinuria or signs of end-organ dysfunction (e.g., headache, visual disturbances, epigastric pain, elevated liver enzymes, thrombocytopenia).
Eclampsia: The occurrence of new-onset grand mal seizures in a woman with preeclampsia. This is a life-threatening emergency for both mother and fetus.
Prehospital Management:
Position patient in left lateral recumbent position.
Administer high-flow oxygen.
Initiate seizure precautions for preeclampsia/eclampsia.
For eclampsia, administer magnesium sulfate (ALS, per protocol) to prevent recurrent seizures.
Rapid, gentle transport to a facility equipped for high-risk obstetric care.
General Prehospital Principles for Early Pregnancy
Scene Safety: As with all patients.
Primary Assessment (ABCs): Stabilize the mother first.
Left Lateral Position: To optimize uterine perfusion and prevent supine hypotensive syndrome.
High-Flow Oxygen: For any signs of distress.
Gentle Handling: Especially important with potential for miscarriage or placental complications.
Rapid Transport: To a facility with obstetric capabilities.
Emotional Support: Recognize the high emotional stakes for the patient.
Critical Thinking Questions
A pregnant patient in her first trimester reports severe abdominal pain and light vaginal bleeding. What life-threatening condition should be a primary concern, and what is your immediate management?
Explain why a pregnant patient might experience a "normal" blood pressure reading that would be considered hypotensive for a non-pregnant adult.
What is supine hypotensive syndrome, and how can EMTs prevent or manage it in the prehospital setting?
A pregnant patient is having a seizure. What is the most likely cause, and what immediate medical intervention (if within your scope and protocol) should be considered?
Discuss the importance of inquiring about drug and alcohol use in a pregnant patient, and how this information guides your patient management.