A nurse in the emergency department is assessing a 4-month-old infant who has suspected pertussis. Which of the following findings should the nurse identify as consistent with this diagnosis? (Select all that apply.)

Apnea and cyanosis during coughing episodes

Inspiratory stridor with a barking cough

Wheezing with shortness of breath during activity

Paroxysmal coughing followed by a high-pitched "whoop" on inspiration

Dry, hacking cough that worsens at night