|
|
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.
Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.
Thyroid conditions may make getting pregnant impossible.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
![Transurethral resection of the prostate (TURP). As a treatment for BPH, part of the prostate gland i](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_27_39_94321928.jpeg)
![Obstetrical sonography and fetometry. (a) The procedure is performed in a clinical setting. The inst](https://biology-forums.com/gallery/47/medium_14755_16_10_12_12_30_00_94542138.jpeg)
![Phlebotomy. In this common procedure, a syringe needle punctures a vein, usually in the arm, and wit](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_15_46_100322221.jpeg)