CRAT questions with correct answers

What pacemaker complications involves irregular pacemaker intervals with slower that set rate impulses and no visual packer spike? Answer Malfuctioning Potassium and __________ are needed in order for the heart to function normally Answer Calcium Premature atrial contractions are rarely dangerous but with what condition could this be an early sign of heart failure or electrolyte imbalance? Answer Acute myocardial infarction As an electrical current travels toward the negative pole on an ecg, the waveform defects in which direction? Answer Downward late ventricular depolarization is represented by? Answer S wave Why is the left side of the heart thicker than the right? Answer It pumps blood back to all the parts of the body What starts at the beginning of the p wave and stops at the begging of the QRS complex? Answer PR interval