USAF - EMT Refresher Course Questions and Answers

What does the 2015 AHA guidelines recommend against when cooling patients?  :-- 2015 AHA guidelines recommend against routine out of hospital cooling of patients with ROSC. Commonly this is done through rapid infusion of cold IV fluids which has demonstrated to have adverse reactions. Intentional reduction of core body temperature is accomplished by placing cold packs to which part of the body?  :-- Axilla, groin, and neck. SpO2 must be maintained no greater than what percent?  :-- 94% Excessive ventilation can cause  :-- Reduced cardiac output and decreased cerebral blood flow CPR must be continued until what signs of life are observed?  :-- A pulse after an organized rhythm, breathing, and movement. In patients with VAD, what precautions you should take? Elscores: Aug. 27, 24- 2024/2025 Exams and Correct Answers |Best Grades | Excellence | Success & Guaranteed Pass 2  :-- Verify that chest compressions are indicated with pt's specific device. Ask family member/caregiver, and view the VAD ID number and consult VAD coordinator. What are the 3 components for good perfusion?  :-- Pump rate, adequate volume of blood, and appropriately sized blood vessels. Why does tissue damage may occur when high O2 concentration is given to ACS and stroke patients?  :-- Oxygen releases free radicals, which are by-products of metabolism and toxic to neighboring cells or tissues. Components of cardiac output  :-- Stroke volume X heart rate. Who needs to deliver assisted artificial ventilations to pts who exhibit deterioration in mental status due to hypoxia and hypercarbia/hypercapnia?  :-- EMS provider What is artherosclerosis?  :-- Plaque that is formed inside the walls of arteries or plaque build-up. What should you assess in the patient's VAD insertion site? Elscores: Aug. 27, 24- 2024/2025 Exams and Correct Answers |Best Grades | Excellence | Success & Guaranteed Pass 3  :-- Infection and signs of sepsis. What are coronary arteries?  :-- These arteries and their branches supply all parts of the heart muscle with blood. What is the pacemaker of the heart?  :-- SA node What are the two phases of the cardiac cycle?  :-- Systole (contraction) and diastole (relaxation