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.
Painkillers: Opiates, nonsteroidal anti-inflammatory agents, acetaminophen. Opiates bring about hyponatremia by stimulating ADH release directly or indirectly by causing nausea or low blood pressure. Nonsteroidal anti-inflammatory drugs potentiate the effect of ADH. Antidiabetic drugs: Chlorpropamide, tolbutamide.