A Richter's hernia causes only a part of the bowel wall to become trapped stuck in the hernia. It won't necessarily cause an obstruction since the passageway of the intestine still allows bowel contents to pass, but that portion of the bowel wall that is trapped can strangulate and die.
Some Of The Causes Of Hypophosphatemia Are: 1  Chronic alcoholism. 2  Use of antacids. 3  Use of certain medications like acetazolamide, pentamidine, etc.  Medical condition called as Fanconi 1  Syndrome. Malnourishment or excessive starvation.  Low vitamin D 1  levels. Hyperparathyroidism.
There are many causes of secondary hyperparathyroidism and it can occur in any condition that causes chronic hypocalcaemia. The commonest cause is chronic kidney disease but may also include vitamin D deficiency from lack of sunlight exposure or malabsorption of vitamin D (small bowel disease, pancreatic disease etc).