The Nurse Notes That the QRS Duration of a Patient

question 13

Multiple Choice

The nurse notes that the QRS duration of a patient with a biventricular pacemaker is widening. What does this most likely indicate?

• A) Worsening of the patient's underlying cardiomyopathy
• B) Loss of ventricular capture
• C) Loss of ventricular synchronization
• D) Battery failure

Apply Huckel's rule to determine the aromaticity of polycyclic compounds.

Understand the hybridization of nitrogen in heterocycles and the implication on lone pairs.

Name common allotropes of carbon and describe their structures.

Provide the structures of common heterocyclic compounds.

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