What is the definition of the immediately dangerous to life and health level (IDLH)?
a. The atmospheric concentration of any substance that poses an immediate threat to life, causes irreversible or delayed adverse health effects, or interferes with an individual's ability to escape during a 30-minute period from a dangerous atmosphere
b. The amount of a substance, measured in milligrams per body mass, that kills half of a group of laboratory animals to which the substance is administered during a preestablished time
c. The concentration of a substance, in milligrams per kilogram (mg/kg), that kills a laboratory animal within 48 hours
d. The concentration of a substance to which workers can be exposed continuously for a period of approximately 15 minutes without suffering irritation, chronic or irreversible tissue damage, or narcosis sufficient to increase the risk of accidental injury, impair self-rescue, or materially reduce work-related efficiency
A
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You are called to the home of a patient who suddenly "stopped breathing." The patient has a history of a neoplasm at C-3 and C-4. You suspect:
A) impingement on the phrenic nerve. B) cervical fractures. C) lung cancer. D) myocardial infarction.
The BEST way to give the emergency department an idea of the severity of blood loss for a patient with vaginal bleeding is to:
A) compare the total blood loss to that of a normal menses. B) determine if the patient is hypotensive from excessive blood loss. C) determine how many sanitary pads are saturated in one hour. D) compare the blood loss to what is lost during childbirth.