Digitalis (e.g., digoxin, Lanoxin) is often prescribed for patients with atrial fibrillation. A common precaution prior to digitalis administration is to take an apical pulse.
Based on your understanding of the mechanisms of atrial fibrillation, why is taking a pulse by palpating the radial or other peripheral artery insufficient?
If there is a difference between the apical pulse and the radial pulse, discuss why the decision to administer or hold digitalis is based on the apical pulse rather than the radial or other peripheral pulse. In other words, why is the apical pulse considered “more accurate” in this situation?