In the elliptical orbit, the center of mass of the orbiting-orbited system is at one focus of both orbits, with nothing present at the other focus. As a planet approaches periapsis, the planet will increase in speed, or velocity.
Drugs that cause hyponatremia include: 1  Diuretics: Thiazides, bumetanide, indapamide, ethacrynic acid, furosemide. 2  Antidepressants: Selective serotonin reuptake inhibitors, tricyclic antidepressants (amitriptyline, protriptyline, desipramine), monoamine oxidase inhibitors, venlafaxine.
Hyponatremia is an uncommon, but serious, complication of diuretic therapy. Thiazide diuretics are more likely than loop diuretics to cause hyponatremia. Loop diuretics inhibit sodium (Na+) transport in the renal medulla and prevent the generation of a maximal osmotic gradient. Thus, urinary concentrating ability is impaired with loop diuretics.