What causes a heart block dysrhythmia?
A. The ectopic focus originates above the ventricles.
B. The rhythm originates at the AV junctional tissue, producing retrograde depolarization.
C. The electrical current has difficulty traveling down the normal conduction pathway.
D. An ectopic beat originates in the right or left atrium, resulting in abnormal conduction.
Answer: C
You might also like to view...
A 31-year-old unrestrained pregnant female has been involved in an MVC and is complaining of chest and abdominal pain after striking the steering wheel. She is conscious, alert, and oriented with no deficits noted to the airway, breathing, or circulation. When asking her questions regarding her status, what questions should you ask first?
A) "Have there been any problems with previous pregnancies?" B) "Are you receiving prenatal care from an obstetrician?" C) "Do you feel as though you are having contractions?" D) "Is there a reason as to why you were not wearing a seat belt?"
Which of the following markers would be helpful in differentiating cortical T-cell ALL from medullary T-cell ALL?
a. HLA-DR b. TdT c. CD2 d. CD1a
Though food types are important in producing a cariogenic (low pH) environment, frequent in-between-meal snacks and drinks can maintain a low pH environment throughout the day, which shifts the demineralization/remineralization continuum toward
caries formation. A) First statement is true, second statement is false. B) First statement is false, second statement is true. C) Both statements are true. D) Both statements are false.
The appearance of clear/white or radiopaque structures on the radiograph is a result of the developer step during film processing
Indicate whether the statement is true or false