Impulse 4.0 Level II Question and
answers verified to pass 2026/2027
DEFLECTION - correct answer As depolarization moves across the myocardium, the electrical impulse is
detected by electrodes placed on the skin.
Positively Deflected waveform - correct answer when a wave of electrical activity moves towards a
positive electrode and produces a positive deflection on the ECG tracing
Negative Deflected Waveform - correct answer When a wave of electrical activity moves away from a
positive electrode producing a negative deflection on the ECG tracing
Biphasic waveform - correct answer When a wave of electrical activity moves at right angles
(perpendicular) to a positive electrode and produces a biphasic waveform, one that is equally positive or
negative
ECG - correct answer Can detect patterns of myocardial ischemia, injury, or infarction, as well as
arrhythmias and changes related to certain metabolic conditions
18-lead ECG - correct answer used when ST elevation is identified in inferior leads (leads II, III, or aVF) to
provide a clearer view of the right side of the heart.
18-lead ECG identifies - correct answer Obtain an 18-lead ECG when an inferior MI is seen on a standard
12-lead ECG to get a better view or the RIGHT SIDE of the heart
15-lead is primary used - correct answer to view the posterior wall of the heart as V8 and V9
predominately looks at the posterior heart
answers verified to pass 2026/2027
DEFLECTION - correct answer As depolarization moves across the myocardium, the electrical impulse is
detected by electrodes placed on the skin.
Positively Deflected waveform - correct answer when a wave of electrical activity moves towards a
positive electrode and produces a positive deflection on the ECG tracing
Negative Deflected Waveform - correct answer When a wave of electrical activity moves away from a
positive electrode producing a negative deflection on the ECG tracing
Biphasic waveform - correct answer When a wave of electrical activity moves at right angles
(perpendicular) to a positive electrode and produces a biphasic waveform, one that is equally positive or
negative
ECG - correct answer Can detect patterns of myocardial ischemia, injury, or infarction, as well as
arrhythmias and changes related to certain metabolic conditions
18-lead ECG - correct answer used when ST elevation is identified in inferior leads (leads II, III, or aVF) to
provide a clearer view of the right side of the heart.
18-lead ECG identifies - correct answer Obtain an 18-lead ECG when an inferior MI is seen on a standard
12-lead ECG to get a better view or the RIGHT SIDE of the heart
15-lead is primary used - correct answer to view the posterior wall of the heart as V8 and V9
predominately looks at the posterior heart
