A patient with a family history of heart disease has an EKG every year.Her latest EKG indicates her heart rate has slowed since her last visit.How would the QRS complex of her most recent EKG compare to that of her previous EKG?
A) The QRS complex would be the same as in previous years.
B) The R-peak within the QRS complex would be missing.
C) The QRS complex would have switched places with the P waves.
D) The R-peaks of successive QRS complexes would be spread farther apart.
E) There would be more QRS complexes.

Question

Quizplus · Accepted Answer

A slower heart rate would result in a wider gap in time between QRS complexes, causing the R-peaks of successive QRS complexes to be spread farther apart. The other options do not accurately reflect the effect of a slowed heart rate on the QRS complex.

A Patient with a Family History of Heart Disease Has