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Did you know?
Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Did you know?
Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
Did you know?
Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
Did you know?
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
![Comparison of normal-shaped erythro- cytes and the abnormal sickle shape noted in patients with sick](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_17_44_8501503.jpeg)
![Incentive spirometry. A portable incentive spirometer is useful for encouraging patients to exercise](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_25_45_100622042.jpeg)