A client comes to a primary care provider's office for a follow-up on their gastroesophageal reflux disease (GERD). The provider has decided to screen the client for Barrett esophagus due to the patient struggling with symptoms for many years. The nurse should provide instruction on which diagnostic procedure?

Choice A reason: This is not a correct sign of hypervolemia. Increased thirst and dry mucous membranes are signs of dehydration or fluid volume deficit, which can occur due to excessive fluid loss or inadequate fluid intake.

Choice B reason: This is not a correct sign of hypervolemia. Low blood pressure and increased heart rate are signs of hypovolemic shock, which can occur due to severe fluid loss or hemorrhage.

Choice C reason: This is a correct sign of hypervolemia. Difficulty breathing and weight gain are signs of fluid overload, which can occur due to excessive fluid retention or impaired cardiac function. Difficulty breathing can be caused by pulmonary edema, which is the accumulation of fluid in the lungs. Weight gain can be caused by the increase in total body fluid.

Choice D reason: This is not a correct sign of hypervolemia. Dry cough and poor skin turgor are signs of dehydration or fluid volume deficit, which can occur due to excessive fluid loss or inadequate fluid intake.

Choice A reason: Guarding and rebound tenderness are signs of peritonitis, which is a serious complication of colonoscopy. Peritonitis is an inflammation of the peritoneum, the membrane that lines the abdominal cavity. It can be caused by perforation or puncture of the colon during the colonoscopy, which allows bacteria and fecal matter to enter the peritoneal space. The nurse should monitor the client for signs of peritonitis, such as abdominal pain, rigidity, fever, and leukocytosis.

Choice B reason: Nausea and vomiting are not specific signs of a complication of colonoscopy. They may be caused by other factors, such as the sedation, the bowel preparation, or the ingestion of food or fluids after the procedure. Nausea and vomiting may also be symptoms of other conditions, such as gastroenteritis, food poisoning, or pregnancy.

Choice C reason: Diarrhea is not a sign of a complication of colonoscopy. Diarrhea may be a normal consequence of the bowel preparation, which involves taking laxatives or enemas to clear the colon before the procedure. Diarrhea may also be caused by other factors, such as the ingestion of food or fluids after the procedure, or the presence of an underlying bowel disorder, such as irritable bowel syndrome or inflammatory bowel disease.

Choice D reason: Hyperactive bowel sounds are not a sign of a complication of colonoscopy. Hyperactive bowel sounds may indicate increased peristalsis, which is the movement of the digestive tract. Hyperactive bowel sounds may be a normal response to the bowel preparation, the ingestion of food or fluids after the procedure, or the stimulation of the colon during the colonoscopy. Hyperactive bowel sounds may also be present in conditions such as diarrhea, gastroenteritis, or intestinal obstruction.