What term is described as the volume of blood in the ventricles at the end of diastole?

A. Increased passage of gas:Small intestinal obstruction prevents the forward movement of intestinal contents, including gas. As the obstruction worsens, passage of flatus typically decreases or stops altogether. Early in partial obstruction, some gas may pass, but progressive obstruction leads to retention rather than increased passage.

B. Decreased heart rate:Obstruction of the small intestine commonly leads to vomiting, fluid shifts into the bowel lumen, and dehydration. These changes activate compensatory mechanisms that increase heart rate rather than decrease it. Bradycardia is not a typical physiologic response to intestinal obstruction.

C. Severe diarrhea:Complete small bowel obstruction usually results in constipation and failure to pass stool or flatus. While early or partial obstruction may cause minimal stool passage, severe diarrhea is not characteristic because intestinal contents cannot move past the obstructed segment.

D. Abdominal distension:Obstruction leads to accumulation of gas and fluid proximal to the blockage, causing bowel dilation. This results in visible and palpable abdominal distension, often accompanied by cramping pain and vomiting. Distension reflects impaired transit and increased intraluminal pressure within the obstructed bowel.

A. Urge incontinence:Urge incontinence is characterized by a sudden, intense urge to urinate followed by involuntary leakage. It is usually caused by overactive bladder muscles, neurological disorders, or bladder irritation, rather than physical stressors like coughing or sneezing.

B. Stress incontinence:Stress incontinence occurs when physical pressure on the bladder—such as from coughing, sneezing, laughing, or exercise—overcomes urethral sphincter resistance, causing involuntary urine leakage. It is commonly seen in individuals with weakened pelvic floor muscles or after childbirth.

C. Functional incontinence:Functional incontinence results from cognitive, physical, or environmental barriers that prevent timely toileting. The bladder and sphincter function are intact, so leakage is due to inability to reach or use the toilet rather than stress-induced pressure.

D. Overflow incontinence:Overflow incontinence occurs when the bladder is overfilled and urine leaks due to incomplete emptying, often associated with obstruction or neurogenic bladder. Leakage in this case is continuous or dribbling, not triggered by coughing or sneezing.