<prompt> TRUE statement about nonrenal cause of hypokalemia among the following is:Loss of K in sweat is a usual cause of hypokalemiaDirect gastric losses of K due to vomiting or nasogastric suctioning is minimalHypochloremic alkalosis due to vomiting results in persistent kaliuresis due to secondary hypoaldosteronismColonic pseudo-obstruction Ogilvies syndrome is due to hyperkalemia  <response>: Hypokalemia can be due to increased loss. Non renal causes are 1. Gastrointestinal loss Diarrhea 2. Integumentary loss Sweat MUST KNOW: The loss of K in sweat is very low except in extremes of physical exeion Direct gastric losses of K is also minimal Vomiting, NG aspiration It can lead to hypochloremic alkalosis It lead to persistent kaliuresis due to secondary hyperaldosteronism Celiac disease, ileostomy, villous adenoma, VIPomas, and chronic laxative cause significant hypokalemia Colonic pseudo-obstruction Ogilvies syndrome can lead to hypokalemia from secretory diarrhea Ref: Harrison, Edition-18, page- 352. 