Understanding Sinus Bradycardia

What is the primary function of the SA node in the heart?

• To regulate blood pressure

• To filter blood impurities

• To pump blood throughout the body

• To act as the heart's pacemaker

Which sinus rhythm is characterized by a heart rate greater than 100 beats per minute?

• Sinus bradycardia

• Normal sinus rhythm

• Atrial fibrillation

• Sinus tachycardia

What is the typical heart rate range for normal sinus rhythm?

• 40 to 60 beats per minute

• 60 to 100 beats per minute

• 100 to 120 beats per minute

• 120 to 140 beats per minute

In EKG analysis, what should the P wave resemble?

• A round and upright wave

• A sharp spike

• A flat line

• A downward slope

What is the significance of the PR interval in an EKG reading?

• It reflects the heart's blood flow rate

• It shows the heart's electrical recovery

• It measures the time between atrial and ventricular depolarization

• It indicates the heart's pumping strength

Which condition is NOT a potential cause of sinus bradycardia?

• Electrolyte imbalances

• Athletic conditioning

• Hyperthyroidism

• Sick sinus syndrome

What is a common symptom of symptomatic bradycardia?

• High blood pressure

• Rapid breathing

• Fainting or syncope

• Increased appetite

What is the first step a nurse should take when a patient shows signs of sinus bradycardia?

• Start an IV infusion

• Assess the patient's symptoms

• Call for a pacemaker

• Administer atropine immediately

Which medication is commonly used to increase heart rate in sinus bradycardia?

• Aspirin

• Atropine

• Metoprolol

• Lisinopril

What is the purpose of a pacemaker in treating sinus bradycardia?

• To maintain a consistent heart rate

• To improve lung function

• To regulate blood sugar levels

• To decrease blood pressure