Arrhythmias Multiple Choice Question

Which of the following arrhythmias is characterized by chaotic, irregular deflections with no identifiable P waves, QRS complexes, or T waves?

• Ventricular Tachycardia (VT)

• Torsade de Pointes

• Ventricular Fibrillation (VF)

• Pulseless Electrical Activity (PEA)

What is the target temperature range for Therapeutic Hypothermia in post-cardiac arrest care?

• 28-30°C

• 30-32°C

• 32-34°C

• 36-38°C

Which of the following is NOT a cause of failure to capture in temporary pacing?

• Output setting too low

• Electrolyte imbalance

• Battery failure

• Fibrosis at the wire-myocardium interface

During high-quality CPR, chest compressions should be performed at a rate of:

• 80-100 compressions per minute

• 100-120 compressions per minute

• 120-140 compressions per minute

• 140-160 compressions per minute

Which form of pacing mode can be used to avoid oversensing?

• VVI mode

• DDD mode

• AAI mode

• VOO mode

Torsade de Pointes is most commonly associated with:

• Myocardial infarction

• Hyperkalemia

• QT interval prolongation

• Hypovolemia

Which factor is NOT associated with therapeutic hypothermia's mechanism of action?

• Reduced brain metabolism

• Inhibition of inflammatory cytokines

• Enhanced excitotoxic neurotransmitter release

• Prevention of apoptosis

A patient with a temporary pacemaker shows pacing spikes on the ECG, but there are no subsequent QRS complexes. What is the most likely issue?

• Failure to pace

• Failure to sense

• Failure to capture

• Lead fracture

Which of the following describes pulseless electrical activity (PEA)?

• No electrical activity is present on the ECG

• Organized electrical activity without a palpable pulse

• Continuous ventricular contractions without any QRS complexes

• Rapid ventricular rhythm with wide QRS complexes

During post-cardiac arrest care, the oxygen saturation target is:

• 88-92%

• 90-94%

• 92-98%

• 95-100%