A son has called 911 for his father, who is having difficulty breathing. On scene, the 81-year-old patient is lying on a couch in the living room, lethargic, and in obvious respiratory distress. He is confused, but has an open airway. His respirations are 38 breaths/min and shallow, and his skin is extremely diaphoretic with cyanosis in the fingertips. At this time, the EMT should:

The CDC's Center for Infectious Diseases recommendations ranking scheme Category IA means that the recommendations are:

a. strongly recommended for all hospitals, and strongly supported by well- designed experimental or epidemiologic studies. b. strongly recommended for all hospitals and reviewed as effective by experts and a consensus of HICPAC based on strong rationale and suggestive evidence, although definitive scientific studies have not been done. c. suggested for implementation in many hospitals. Recommendations may be supported or suggested by clinical or epidemiological studies, a strong theoretical rationale, or definitive studies applicable to some, but not all, hospitals. d. practices for which insufficient evidence or consensus regarding efficacy exists.

Each of the following statements regarding testing for darkroom light leaks is correct EXCEPT one. Which one is the EXCEPTION?

a. All lights, including the safelight, should be turned off. b. White-light leaks may be marked with tape or chalk so that they can subsequently be sealed. c. White-light leaks are visible as soon as the lights in the darkroom are turned off. d. Possible sources of light leaks include around the entry door and around pipes leading into the darkroom.