Perfusion & ECG

The nurse is aware that stroke volume can be affected by which factors? Select all that apply.

• Heart size

• Contractility

• Hormones

• Autonomic innervation

• Preload

The nurse is assessing a patient's ECG and recognizes that the ______ is the primary pacemaker of the heart.

• Atrioventricular Node

• Purkinje Fiber

• Sinoatrial Node

• Internodal Pathway

The nurse is assessing a patient's perfusion status and recognizes that cardiac output has a direct effect on perfusion. Which manifestations would be present in a patient with decreased cardiac output? Select all that apply.

• Capillary refill <3 sec.

• Hypotension

• Restlessness

• Cool, clammy skin

• Flushing

The nurse is aware that an electrocardiogram measures what?

• Cardiac output

• A view of the heart between three points

• Electrical activity of the heart
• Blood pressure

The nurse is aware that the P wave on an ECG represents what?

• Ventricular depolarization

• Ventricular repolarization

• Atrial depolarization

• Atrial repolarization

ECG graph paper is measured with small and big boxes. One small box is equal to ______ seconds.

The nurse is aware that the T wave on an ECG represents what?

• Ventricular depolarization

• Ventricular repolarization

• Atrial depolarization

• Atrial repolarization

The nurse is interpreting the ECG rhythm for a patient and is aware that the most important next step is what?

• Assessing the patient for signs or symptoms related to the rhythm

• Determining if the rhythm is new

• Checking the MAR for any medications indicated for that rhythm

• Calling the cardiologist to report an abnormal rhythm

The nurse is aware that the QRS complex on an ECG represents what?

• Atrial depolarization

• Ventricular depolarization

• Atrial repolarization

• Ventricular repolarization

The nurse is performing a cardiovascular assessment on a patient and is aware that which factor can affect heart rate?

• Preload

• Afterload

• Contractility

• Age