NREMT EMT Online Access

Hypovolemic shock results from acute blood loss, commonly seen with penetrating trauma such as gunshot wounds. NREMT identifies several key indicators that reflect reduced circulating volume and inadequate tissue perfusion.

Option A (Heart rate) is a strong indicator. Tachycardia (P 140) reflects the body’s attempt to compensate for reduced blood volume and maintain cardiac output.

Option B (Lung sounds) are significant in this case because absent sounds suggest associated chest trauma that may contribute to blood loss and impaired oxygenation, worsening shock.

Option C (Mental status) is a critical indicator. Unconsciousness reflects inadequate cerebral perfusion, a late and serious sign of shock.

Additional supportive findings include pale, cool skin and borderline hypotension. NREMT emphasizes early recognition of shock and rapid control of bleeding, oxygenation, and transport to definitive care.

The correct answer is D. Administer oxygen by non-rebreather mask.

Anaphylaxis (bee sting)

Hypotension (78/60) → shock

Tachycardia (140)

Low SpO₂ (86%)

Shortness of breath

This is a life-threatening allergic reaction requiring aggressive airway and oxygen management.

Provides high-flow, high-concentration oxygen (up to ~90–95%)

Indicated for patients with:

Hypoxia (SpO₂ < 94%)

Respiratory distress

Shock states

After epinephrine, oxygen therapy is the next immediate step

A. Closely monitor SpO₂ → Monitoring alone is insufficient; intervention is needed

B. Nasal cannula → Delivers low-flow oxygen, inadequate for severe hypoxia

C. Assist ventilations with BVM → Indicated only if respiratory failure or inadequate breathing, not yet present

“Administer high-flow oxygen to patients with hypoxia or respiratory distress.”

“Anaphylaxis requires epinephrine and supportive airway/oxygen management.”

“Use a nonrebreather mask for patients requiring high-concentration oxygen.”

The correct answer is C. Abruptio placenta (placental abruption).

This patient presents with classic signs of placental abruption, especially in the context of trauma:

Severe abdominal pain

History of trauma (MVC)

Uterine contractions

Minimal or concealed vaginal bleeding

Why C is correct (Abruptio placenta):

Placental abruption occurs when the placenta prematurely separates from the uterine wall. It is strongly associated with trauma during pregnancy.

Key features include:

Painful abdomen

Uterine irritability or contractions

Bleeding that may be minimal or concealed

NREMT-aligned guidance states:

“Placental abruption is commonly associated with trauma and presents with abdominal pain and uterine contractions.”

“Bleeding may be minimal because it can be concealed behind the placenta.”

Why the other options are incorrect:

A. Placenta previa: Presents with painless vaginal bleeding, not abdominal pain or contractions.

B. Ruptured uterus: Rare, usually associated with severe trauma or prior uterine surgery; presents with catastrophic signs.

D. Spontaneous abortion: Occurs earlier in pregnancy (typically < 20 weeks), not at 26 weeks.

Exact Extracts:

“Placental abruption presents with abdominal pain and vaginal bleeding following trauma.”

“Bleeding may be concealed and not externally visible.”

“Uterine contractions and tenderness are common findings.”

The correct answer is B. Administer epinephrine.

This patient is experiencing anaphylactic shock, a life-threatening allergic reaction.

Key findings indicating anaphylaxis:

Sudden onset respiratory distress (wheezing)

Urticaria (hives) → hallmark allergic reaction

Hypotension (BP 82/48) → indicates shock

Hypoxia (SpO₂ 91%)

Why B is correct:

Epinephrine is the first-line, life-saving treatment for anaphylaxis.

It works by:

Bronchodilation (improves wheezing)

Vasoconstriction (raises blood pressure)

Reduces airway swelling

It must be given immediately when anaphylaxis is suspected.

Why the other options are incorrect:

A. Nebulized albuterol → Helps wheezing but does not treat shock or airway swelling

C. High-flow oxygen → Important, but not definitive treatment; epinephrine takes priority

D. Immediate transport → Necessary, but life-saving intervention must occur first

Exact Extracts:

“Epinephrine is the first-line treatment for anaphylaxis.”

“Anaphylaxis presents with respiratory distress, hypotension, and hives.”

“Immediate administration of epinephrine is critical.”