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.
Drugs Causing Low Sodium Levels / Hyponatremia. Drugs Causing Lowering of Sodium Level or Hyponatremia. Drugs are one of the causes implicated in the development of lowering of sodium level or hyponatremia. Diuretics: Thiazides, bumetanide, indapamide, ethacrynic acid, furosemide.