|
|
As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.
Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.
![Distribution of glaciers in North America (a) in the late twentieth century, and (b) 18,000 years ag](https://biology-forums.com/gallery/47/medium_33_19_02_12_5_39_50_20561464.jpeg)
![Urinometer. In this procedure, a urine sample and urinometer are placed within a tube, and the liqui](https://biology-forums.com/gallery/47/medium_14755_05_10_12_4_17_11_92921634.jpeg)