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When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.
In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
![Allen Test: A patent ulnar artery reveals the return of palm perfusion despite radial artery compres](https://biology-forums.com/gallery/47/medium_2137_21_07_12_6_35_44.jpeg)
![Allen Test: An occluded ulnar artery results in continued pallor of the hand while the radial artery](https://biology-forums.com/gallery/47/medium_2137_21_07_12_6_36_15.jpeg)