National Registry Emergency Medical Technician Free Sample Questions

The child is exhibiting signs of severe anaphylaxis (stridor, lethargy, difficulty breathing), which is a life-threatening emergency. The definitive treatment is epinephrine. Assisting with the patient's own prescribed auto-injector is the most critical and immediate intervention. While oxygen is important, it does not reverse the underlying pathophysiology of anaphylaxis. Transport and contacting medical control are also necessary steps, but they follow the life-saving administration of epinephrine.

The presence of soot, singed facial hair, and a hoarse voice are classic signs of a significant inhalation injury. This can lead to rapid and severe swelling (edema) of the upper airway, resulting in complete obstruction. While carbon monoxide poisoning and shock are also serious concerns, the most immediate life-threat that must be anticipated and managed is the loss of a patent airway.

This patient's presentation is classic for acute cardiogenic pulmonary edema. CPAP is the primary intervention for these patients. It works by increasing intrathoracic pressure, which decreases venous return (preload) and pushes fluid out of the alveoli back into the capillaries, improving gas exchange. The patient meets the criteria for CPAP: alert, able to follow commands, in severe respiratory distress, and hypertensive. Bronchodilators are for bronchoconstriction (e.g., asthma/COPD), and laying the patient supine would worsen their condition.

The presence of peripheral versus central pulses can provide a rough estimation of systolic blood pressure (SBP). The presence of a carotid pulse indicates an SBP of at least 60-70 mmHg. If a femoral pulse were present, it would suggest an SBP of 70-80 mmHg, and a radial pulse suggests an SBP of at least 80-90 mmHg. The absence of a radial pulse but presence of a carotid pulse strongly suggests significant hypotension, likely in the 60-70 mmHg range.

The patient's history of infection (cough, fever) combined with signs of systemic inflammatory response and organ dysfunction (AMS, hypotension, tachycardia, tachypnea) are classic indicators of sepsis.

The productive cough and fever strongly suggest a respiratory infection, with pneumonia being a very common cause in elderly patients. The pneumonia is the likely source of the systemic infection leading to sepsis.

This statement is true. Hyperventilation (ventilating too fast) or using excessive force increases the pressure in the airway, which can overcome the esophageal opening pressure. This forces air into the stomach (gastric distention) instead of the lungs. Gastric distention can compromise ventilations by pushing up on the diaphragm and significantly increases the risk of regurgitation and aspiration of gastric contents.

Adenosine has an extremely short half-life (less than 10 seconds). To be effective, it must reach the AV node quickly. The correct procedure is to administer the initial dose of 6 mg as a rapid IV push (over 1-2 seconds) in a large proximal vein, immediately followed by a rapid 20 mL normal saline flush to propel the medication to the heart. A slow push would allow the drug to be metabolized before it could work. The 12 mg dose is considered only if the initial 6 mg dose is ineffective.

The incorrect step is placing the bag directly on ice. This can cause frostbite and damage the tissue, making reattachment less likely. The correct procedure is to wrap the amputated part in saline-moistened gauze, place it in a sealed plastic bag, and then place that bag into a second container with a mixture of ice and water. This keeps the part cool without freezing it.

In a multiple-casualty incident (MCI), the first arriving unit's primary responsibility is to establish command, ensure scene safety, and perform a rapid size-up to determine the nature of the incident and resource needs. This involves providing an initial report to dispatch about the location, type of incident, number of patients, and any immediate hazards. This step is crucial for organizing the chaos and getting the necessary help en route before individual patient care begins.

The combination of a missed menstrual period, sudden unilateral abdominal pain, and signs of shock (pallor, tachycardia, hypotension) in a female of childbearing age is the classic presentation for a ruptured ectopic pregnancy. This is a true surgical emergency due to the risk of life-threatening internal hemorrhage. While other conditions can cause abdominal pain, none fit this specific cluster of signs and symptoms as well.