Question

1. What does the PR interval on an ECG reflect?
   • T wave inversion
   • Opening of mitral valve between the left atrium and left ventricle
   • Time between atrial and ventricular contraction
   • Width of septum
2. Which wave represents repolarization of the ventricles?
   • P wave
   • PR interval
   • T wave
   • QRS complex
3. You are alone when you encounter an individual in cardiac arrest. They are not breathing, have no pulse, and have no suspected cervical spine trauma. Which maneuver should you use to open the airway?
   • Head-tilt only
   • Blind finger-sweeps
   • Head-tilt-chin-lift maneuver
   • Jaw-thrust maneuver
4. Which of the following may be essential to maintain an individual’s airway open?
   • Suctioning
   • Chest thrusts
   • Rescue breaths
   • O2 administration
5. According to the 2015 Guidelines, high-quality CPR is defined as:
   • 100-120 chest compressions per minute at a depth of at least two inches but not greater than 2.4 inches
   • 100 chest compressions per minute at a depth of at least one inch
   • 80 chest compressions per minute at a depth of at least one inch
   • 80 chest compressions per minute at a depth of at least two inches
6. This is an example of what type of heart rhythm?

   sal-ns-acls

   • Ventricular fibrillation
   • Normal sinus rhythm
   • Atrial fibrillation
   • Asystole
7. This is an example of which type of heart rhythm?

   sal-44-acls

   • Pulseless electrical activity
   • Atrial fibrillation
   • Ventricular flutter
   • Asystole
8. Which of the following can be a result of prolonged asystole?
   • Severe brain damage
   • Lack of oxygen to vital organs
   • Severe myocardial ischemia
   • All of the above
9. Which of the following can represent a correct treatment choice for an individual in asystole?
   • A. Epinephrine
   • B. Synchronized shock with an AED
   • C. Vasopressin
   • D. Both A and C
10. An important link in the STEMI Chain of Survival is improving myocardial perfusion by:
    • Percutaneous coronary intervention (PCI) or fibrinolytics
    • CPR
    • Chest compressions
    • Defibrillation

Answer 1

1. The correct option is - Time between atrial and ventricular contraction

It represents the time from the onset of atrial depolarization to the onset of ventricular depolarization.

2. The correct option is - T wave .

T -wave represents the ventricular repolarization

3. The correct option is Head -tilt- chin -lift maneuver .

When there is no cervical spine injury ,the maneuver used to open the airway is head -tilt-chin-lift maneuver .

1st step

Place one hand on the forehead and place fingertips of the other hand under the bony area at the center of the patients jaw

2nd step

Tilt the head by applying gentle pressure to the patient's forehead

3rd step

Use your fingertips to lift the chin and support the lower jaw. Move the jaw forward to a point where the lower teeth are almost touching the upper teeth. Do not compress the soft tissue under the jaw, which can obstruct the airway

4th step

Do not allow the patient's mouth to be closed. To provide an adequate opening at the mouth, you may need to use the thumb of the hand supporting the chin to pull back the patient's lower lip. Do not insert your thumb into the patient's mouth

4. The correct option is rescue breaths . It is the substitute for normal breathing in another person to supply oxygen needed to survive .