Sevoflurane is a sweet-smelling, nonflammable, highly fluorinated methyl isopropyl ether used as an inhalational anaesthetic for induction and maintenance of general anesthesia. After desflurane, it is the volatile anesthetic with the fastest onset. While its offset may be faster than agents other than desflurane in a few circumstances, its offset is more often similar to that of the much older agent isoflurane. While sevoflurane is only half as soluble as isoflurane in blood, the  tissue blood partition coefficients of isoflurane and sevoflurane are quite similar. For example, in the muscle group: isoflurane 2.62 vs. sevoflurane 2.57. In the fat group: isoflurane 52 vs. sevoflurane 50. As a result, the longer the case, the more similar will be the emergence times for sevoflurane and isoflurane. Medical uses
It is one of the most commonly used volatile anesthetic agents, particularly for outpatient anesthesia,  across all ages, as well as in veterinary medicine. Together with desflurane, sevoflurane is replacing isoflurane and halothane in modern anesthesia practice. It is often administered in a mixture of nitrous oxide and oxygen. Sevoflurane has an excellent safety record, but is under review for potential hepatotoxicity, and may accelerate Alzheimers. There were rare reports involving adults with symptoms similar to halothane hepatotoxicity. Sevoflurane is the preferred agent for mask induction due to its lesser irritation to mucous membranes. Sevoflurane was discovered by Ross Terrell and independently by Bernard M Regan.
Triamterene (trade name Dyrenium among others) is a potassium-sparing diuretic often used in combination with thiazide diuretics for the treatment of high blood pressure or swelling. The combination with hydrochlorothiazide, is known as hydrochlorothiazide/triamterene. Side effects
Common side effects may include a depletion of sodium, folic acid, and calcium, nausea, vomiting, diarrhea, headache, dizziness, fatigue, and dry mouth. Serious side effects may include heart palpitations, tingling/numbness, fever, chills, sore throat, rash, and back pain. Triamterene can also cause kidney stones through direct crystallization or by seeding calcium oxalate stones. Triamterene is best avoided in patients with chronic kidney disease due to the possibility of hyperkalemia. People using this drug should use salt substitute cautiously.Triamterene may impart a blue fluorescent color to the urine. Caution with certain disease states
Diabetes: Use with caution in people with prediabetes or diabetes mellitus as there may be a change in glucose control. Liver impairment: Use with caution in people with severe liver dysfunction; in cirrhosis, avoid electrolyte and acid/base imbalances that might lead to hepatic encephalopathy. Kidney failure: combined triamterene and indomethacin therapy caused reversible acute kidney injury in some people.Kidney stones: Use with caution in people with kidney stones. Use should be avoided if the creatinine clearance is less than 10 ml/minute. Mechanism of action
Triamterene directly blocks the epithelial sodium channel (ENaC) on the lumen side of the kidney collecting tubule.