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.
However, the lack of food meant that he had increased his water intake, leading to hyponatremia. All SNRIs and selective serotonin reuptake inhibitors (SSRIs) can cause hyponatremia. The mechanism of action is thought to be via syndrome of inappropriate antidiuretic hormone (SIADH), which impairs water excretion.