After a partial gastrectomy or pyloroplasty, clinical manifestations that include increased pulse, hypotension, weakness, pallor, sweating, and dizziness are a result of:
A)an anaphylactic reaction in which chemical mediators, such as histamine, prostaglandins, and leukotrienes, relax vascular smooth muscles causing shock.
B)hemorrhage postoperatively in which a large volume of blood is lost, causing hypotension with compensatory tachycardia.
C)a concentrated bolus that moves from the stomach into the small intestine, which causes hyperglycemia, resulting in polyuria and eventually hypovolemic shock.
D)a rapid gastric emptying and creation of a high osmotic gradient in the small intestine that causes a sudden shift of fluid from the blood vessels to the intestinal lumen.

Question

Quizplus · Accepted Answer

Dumping syndrome occurs with varying severity in 5% to 10% of individuals who have undergone partial gastrectomy or pyloroplasty. Rapid gastric emptying and creation of a high osmotic gradient within the small intestine cause a sudden shift of fluid from the vascular compartment to the intestinal lumen. Plasma volume decreases, causing vasomotor responses, such as increased pulse rate, hypotension, weakness, pallor, sweating, and dizziness. Rapid distention of the intestine produces a feeling of epigastric fullness, cramping, nausea, vomiting, and diarrhea.

After a Partial Gastrectomy or Pyloroplasty, Clinical Manifestations That Include