Chronotropic incompetence is the inability of the heart to increase its rate with exercise

You are treating a patient with a history of asthma. You have administered two albuterol breathing treatments and the patient had used their own inhaler three times before calling you. Which of the following describes an expected side effect of the medication administration?

A) Respiratory rate decreasing from 30 to 24 breaths per minute B) Relaxation of bronchial smooth muscle C) Tachycardia D) Bronchospasm

Which of the following vitamin deficiencies causes rickets?

Vitamin C Vitamin K Vitamin D Folic acid