|
|
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.
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.
Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.
Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
![Students rated their grandparents on a scale from 1 to 4 based on emotional closeness, time spent ...](https://biology-forums.com/gallery/47/medium_660365_23_12_16_3_52_06_24360827.jpeg)
![In many industrialized nations, men are having children at older ages, raising the possibility of ...](https://biology-forums.com/gallery/47/medium_637842_18_01_17_5_49_29_244891027.png)