The term "hematuria" is used to refer to urine that contains

A. Loss of urine associated with the inability to reach the toilet in time due to physical limitations is incorrect because this describes functional incontinence. In this condition, the urinary system is usually intact, but the client cannot reach the toilet in time due to barriers such as impaired mobility, environmental obstacles, or cognitive impairment. The problem is not with bladder control, but with the ability to access toileting facilities.

B. Continuous dribbling of urine due to bladder overdistention is incorrect because this describes overflow incontinence. This occurs when the bladder becomes overly full and cannot empty properly, often due to obstruction or weak bladder muscles. As a result, urine leaks out in small amounts continuously. This type of incontinence is associated with urinary retention rather than sudden pressure-related leakage.

C. Leakage of urine due to increased intra-abdominal pressure, such as when coughing or sneezing is correct because stress incontinence occurs when weakened pelvic floor muscles or urethral sphincter allow urine to escape when intra-abdominal pressure rises. Activities such as coughing, sneezing, laughing, exercising, or lifting increase pressure in the abdomen, which overcomes the weakened sphincter and causes leakage. There is typically no urge to void before the leakage, which helps distinguish it from other types such as urge incontinence.

D. Involuntary urination that occurs during deep sleep is incorrect because this describes nocturnal enuresis, also known as bedwetting. This condition is more common in children but can also occur in adults due to sleep disturbances or neurological conditions. It is not related to increased intra-abdominal pressure or sphincter weakness during physical activity

A. Hemolytic is incorrect because hemolytic anemia occurs when red blood cells (RBCs) are destroyed prematurely. Causes include autoimmune reactions, certain medications, infections, or inherited RBC defects. Hemolytic anemia affects RBC lifespan rather than their production, and it is not related to vitamin B12 or intrinsic factor deficiency.

B. Aplastic is incorrect because aplastic anemia results from bone marrow failure, leading to a deficiency of red blood cells, white blood cells, and platelets. It is usually caused by toxins, radiation, medications, or autoimmune mechanisms. The issue in aplastic anemia is inadequate cell production, not impaired vitamin B12 absorption.

C. Iron-deficiency is incorrect because iron-deficiency anemia results from a lack of iron, which is required for hemoglobin synthesis. Iron deficiency produces small, pale red blood cells (microcytic, hypochromic anemia). It does not involve vitamin B12, intrinsic factor, or megaloblastic changes.

D. Pernicious is correct because pernicious anemia is caused by the body’s inability to absorb vitamin B12 due to the absence of intrinsic factor, a glycoprotein secreted by the parietal cells of the stomach. Intrinsic factor binds to vitamin B12 and allows its absorption in the terminal ileum. Vitamin B12 is essential for DNA synthesis, especially in rapidly dividing cells like red blood cells. Without it, the bone marrow produces megaloblasts—large, immature, dysfunctional red blood cells, which leads to megaloblastic anemia.