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RMA Review - Chpt20
Electrocardiography
| Question | Answer |
|---|---|
| Transmission of EKG signals via radio waves | Telemetry |
| On an EKG tracing, an indication of the absence of electrical charge or activity represents | Baseline |
| A beat arising from a focus outside the heart is | Ectopic beat |
| Epicardium | Outermost layer of the heart |
| Sudden rush of blood pushed into the ventricles as a result of atrial contraction is | Atrial kick |
| The U wave represents | Repolarization |
| Not necessary in administering an EKG | Sterilizing the leads |
| Which type of lead is lead III | Bipolar limb lead |
| Represented by the Q-T interval | One ventricular contraction and recovery |
| Leads aVR, aVL, and aVF are | -Limb leads and Augmented leads(aka Unipolar leads) (BOTH OF THESE) |
| Successful depolarization of the atria or ventricles by an artificial pacemaker is called | capture |
| Not a cause of artifacts on an EKG | Clean sensors |
| Augmented leads are also known as | Unipolar leads |
| The QRS complex represents | Contraction of the ventricles |
| The coronary sinus empties into the | Right atrium |
| A falling or drooping of the heart | Cardioptosis |
| Measurement of the atrial rate on the EKG tracing | P waves |
| Lead II is a(n) | Bipolar limb lead |
| The heart's conduction system is measured by | Exercise electrocardiography |
| Which of the patient's limbs serves as an electrical ground | Right leg |
| Depolarization of fast cells is dependent on which electrolytes | Sodium |
| Device that may deliver a small amount of electrical energy to cause myocardial depolarization | Electronic pacemaker |
| Cardiomegaly often occurs in which condition | Congestive heart failure |
| Which waves on an EKG represent the slow recovery of repolarization | U wave |
| When ventricular rhythm is extremely slow and irregular, and it becomes slower to the point of asystole, it is called | Agonal rhythm |