An infection control nurse is teaching a class about the transmission of infectious agents. The nurse should include that which of the following diseases is transmitted via airborne transmission? (Select All that Apply.)

Choice A Reason: WBC Count 22,000/mm³

A white blood cell (WBC) count of 22,000/mm³ is significantly higher than the normal range, which is typically between 4,000 and 11,000/mm³. An elevated WBC count, known as leukocytosis, often indicates the presence of an infection as the body produces more white blood cells to fight off pathogens. This elevated count can also be seen in other conditions such as inflammation, stress, or bone marrow disorders, but it is a strong indicator of infection.

Choice B Reason: Hgb 15 g/dL

Hemoglobin (Hgb) levels of 15 g/dL fall within the normal range for adults, which is generally 13.8 to 17.2 g/dL for males and 12.1 to 15.1 g/dL for females. Normal hemoglobin levels indicate that the blood’s oxygen-carrying capacity is adequate and do not specifically point to an infection.

Choice C Reason: Creatine kinase 75 units/L

Creatine kinase (CK) levels of 75 units/L are within the normal range, which is typically 24 to 204 U/L. CK is an enzyme found in the heart, brain, and skeletal muscle, and elevated levels can indicate muscle damage, myocardial infarction, or other conditions affecting these tissues. However, normal CK levels do not indicate the presence of an infection.

Choice D Reason: Platelet count 200,000/mm³

A platelet count of 200,000/mm³ is within the normal range, which is generally between 150,000 and 450,000 platelets per microliter of blood. Platelets are involved in blood clotting, and normal levels do not indicate an infection. Abnormal platelet counts can be associated with bleeding disorders or thrombosis, but a normal count does not suggest an infection.

Choice A Reason: Alternate the use of ice and heat

Alternating the use of ice and heat is not typically recommended for the initial treatment of a soft-tissue injury. Ice is generally used during the first 24-48 hours to reduce swelling and inflammation. Heat can be applied later to help relax muscles and improve blood flow, but it should not be used immediately after an injury as it can increase swelling.

Choice B Reason: Apply ice pack intermittently

Applying the ice pack intermittently is important to prevent skin damage and frostbite. It is generally recommended to apply ice for 15-20 minutes at a time, followed by a break of at least 20 minutes before reapplying. This helps to reduce swelling and pain without causing harm to the skin and underlying tissues.

Choice C Reason: Do not place ice pack directly on the skin

Placing an ice pack directly on the skin can cause frostbite and damage to the skin and tissues. It is important to wrap the ice pack in a thin cloth or towel before applying it to the injured area. This provides a barrier that protects the skin while still allowing the cold to penetrate and reduce swelling.

Choice D Reason: Leave ice pack on for no more than 20 minutes at a time

Leaving the ice pack on for no more than 20 minutes at a time is crucial to prevent frostbite and skin damage. Prolonged exposure to cold can cause harm, so it is important to limit the duration of each application and take breaks in between.