ECG Chapter 8 Latest Edition.

ECG Chapter 8 Latest Edition.When the heartbeat originates outside of the SA node, it is called a(n)__________. - ANSWERectopic beat Which of the following conditions is where the heart muscle cannot contract even though electrical activity appears on the ECG? - ANSWERPulseless electrical activity Which of the following cardiac medications would be given if the indication is bradycardia? - ANSWERAtropine ____________ is defined as a decrease in oxygenated blood flow to the heart muscle - ANSWERIschemia Junctional tachycardia occurs when the junctional rate is how many beats per minute? - ANSWER100-180 Blockage of one or more coronary arteries that supply blood to the left ventricle is usually the cause of which of the following? - ANSWERAcute myocardial infarction Which of the following is the absence of any ventricular activity, no depolarization, no pulse, no blood is flowing through the heart, no cardiac output? - ANSWERVentricular asystole What is the largest cause of natural deaths in the United States? - ANSWERSudden cardiac arrest In a pacemaker ECG, if a spike appears by itself with no P wave and no QRS complex, it is called a(n) ____________. - ANSWERLoss of capture Which of the following cardiac medications would be given if the indication is an acute coronary syndrome? - ANSWERNitroglycerin When medication no longer controls tachycardia, which of the following may be implanted into the patient to control these life-threatening arrhythmias? - ANSWERImplantable cardioverter defibrillator In atrial arrhythmias, the atrioventricular (AV) node overrides the SA node impulses and the AV node becomes the heart's____________. - ANSWERpacemaker The primary difference between the sinus tachycardia and atrial tachycardia is found in the appearance of which of the following ECG tracings? - ANSWERP wave Left untreated, some atrial arrhythmias can cause _________ to form in the heart - ANSWERblood clots