A brightfield microscope should be thoroughly maintained at least

A patient has been shot three times in the abdomen and has massive internal hemorrhage and blood loss. What will best give this patient a chance at survival?

A) High-concentration oxygen B) Stopping the bleeding C) Positive pressure ventilation D) Paramedic intervention for pain management

Bronchial hygiene therapy for patients with Duchenne muscular dystrophy or spinal muscular at-rophy is most appropriate with which of the following?

a. Intermittent positive-pressure breathing b. Incentive spirometry c. Mechanical insufflation-exsufflation d. Positive expiratory pressure