A client develops edema of the left arm and hand following a left radical mastectomy. The nurse explains the cause of the edema. Which explanation is correct?

Lymph structures were removed and fluid cannot move out of the area easily.

There is still too much swelling in the area of the surgery and fluid is accumulating.

The veins were removed from the axilla during surgery and there is poor circulation now.

You will need to wear a compression bandage to help fluids move from the area.

Answer and Explanation

The Correct Answer is A

Choice A reason: Lymph structures were removed and fluid cannot move out of the area easily is the correct explanation because a radical mastectomy involves the removal of the breast, the underlying chest muscles, and the lymph nodes in the axilla. The lymph nodes are part of the lymphatic system, which is responsible for draining excess fluid from the tissues and returning it to the bloodstream. When the lymph nodes are removed, the fluid cannot be drained properly and accumulates in the affected arm and hand, causing edema.

Choice B reason: There is still too much swelling in the area of the surgery and fluid is accumulating is not the correct explanation because it does not address the underlying cause of the edema. Swelling is a normal response to surgery, but it usually subsides within a few days or weeks. The edema caused by lymph node removal is chronic and persistent, and it does not improve with time.

Choice C reason: The veins were removed from the axilla during surgery and there is poor circulation now is not the correct explanation because it is not true. The veins are not removed during a radical mastectomy, only the lymph nodes are. The veins are part of the circulatory system, which carries blood throughout the body. The blood flow to the arm and hand is not affected by the surgery, unless there is a complication such as a blood clot or an infection.

Choice D reason: You will need to wear a compression bandage to help fluids move from the area is not the correct explanation because it is a treatment, not a cause. A compression bandage is a type of elastic bandage that applies pressure to the arm and hand, which helps to reduce the swelling and prevent further fluid accumulation. However, it does not address the root cause of the edema, which is the removal of the lymph nodes.

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Correct Answer is C

Explanation

Choice A reason: Initiates the fibrinolytic process in the arteries is not a role of inflammation in the development of atherosclerosis, but a protective mechanism against it. Fibrinolysis is the breakdown of blood clots by enzymes such as plasmin. It prevents the formation of thrombi that can occlude the arteries and cause ischemia.

Choice B reason: Decreases highly sensitive C-reactive protein (hsCRP) levels is not a role of inflammation in the development of atherosclerosis, but an indicator of it. hsCRP is a marker of systemic inflammation that is produced by the liver in response to cytokines. It is elevated in patients with atherosclerosis and correlates with the risk of cardiovascular events.

Choice C reason: Damages the endothelium of the arteries is the main role of inflammation in the development of atherosclerosis. Endothelial injury exposes the subendothelial layer to the blood, which triggers the adhesion of monocytes and platelets. Monocytes differentiate into macrophages and engulf oxidized low-density lipoproteins (LDL), forming foam cells. Foam cells accumulate in the intima and form fatty streaks, which are the earliest lesions of atherosclerosis.

Choice D reason: Causes diffuse arterial vasoconstriction is not a role of inflammation in the development of atherosclerosis, but a consequence of it. Atherosclerosis narrows the lumen of the arteries and reduces the blood flow to the tissues. This causes ischemia, which stimulates the release of vasoconstrictors such as angiotensin II and endothelin. Vasoconstriction further worsens the ischemia and increases the blood pressure.

A. Blood flow is diverted from the abdominal muscles to the liver due to increased intravascular pressure B. Vasodilation of the mesenteric blood vessels promotes movement of sodium into the peritoneum C. Fluid moves from the intravascular space to the interstitial space due to decreased serum albumin levels D. The liver metabolizes increased amounts of antidiuretic hormone and aldosterone

Correct Answer is C

Explanation

Choice A reason: Blood flow is diverted from the abdominal muscles to the liver due to increased intravascular pressure is not the best description because it is a condition that affects the distribution of blood in the body, not the accumulation of fluid in the abdomen. Intravascular pressure is the pressure exerted by the blood on the walls of the blood vessels, which can be affected by various factors, such as blood volume, cardiac output, or vascular resistance. Increased intravascular pressure can cause blood flow to be diverted from the peripheral areas, such as the abdominal muscles, to the central areas, such as the liver, which can result in symptoms such as portal hypertension, which is a high blood pressure in the vein that carries blood from the digestive organs to the liver.

Choice B reason: Vasodilation of the mesenteric blood vessels promotes movement of sodium into the peritoneum is not the best description because it is a condition that affects the diameter of the blood vessels in the abdomen, not the accumulation of fluid in the abdomen. Vasodilation is the widening of the blood vessels, which can be caused by various factors, such as nitric oxide, prostaglandins, or histamine. Vasodilation of the mesenteric blood vessels, which are the blood vessels that supply the intestines, can increase the blood flow and the permeability of the capillaries, which are the smallest blood vessels, allowing sodium and water to move from the blood to the peritoneum, which is the membrane that covers the abdominal organs and the abdominal wall. However, this is not the main mechanism for ascites development in this client, because the amount of sodium and water that moves through the capillaries is normally balanced by the lymphatic system, which is a network of vessels that drains the excess fluid and returns it to the blood.

Choice C reason: Fluid moves from the intravascular space to the interstitial space due to decreased serum albumin levels is the best description because it is a condition that affects the osmotic pressure of the blood, which is the main mechanism for ascites development in this client. Osmotic pressure is the pressure that is exerted by the solutes, such as proteins, in a solution, which determines the movement of water across a semipermeable membrane, such as the capillary wall. Albumin is the most abundant protein in the blood, which is produced by the liver and helps to maintain the osmotic pressure of the blood. Decreased serum albumin levels can be caused by various factors, such as liver failure, malnutrition, or inflammation. Decreased serum albumin levels can reduce the osmotic pressure of the blood, which means that the blood cannot retain enough water, causing fluid to move from the intravascular space, which is the space within the blood vessels, to the interstitial space, which is the space between the cells and the blood vessels. This can result in edema, which is the swelling of the tissues due to fluid accumulation, especially in the abdomen, which is called ascites.

Choice D reason: The liver metabolizes increased amounts of antidiuretic hormone and aldosterone is not the best description because it is a condition that affects the hormonal regulation of water and sodium balance, not the accumulation of fluid in the abdomen. Antidiuretic hormone and aldosterone are hormones that help the kidneys retain water and sodium, respectively, and regulate the fluid and electrolyte balance in the body. Antidiuretic hormone is produced by the hypothalamus and secreted by the pituitary gland, while aldosterone is produced by the adrenal glands. The liver is involved in the metabolism and clearance of these hormones, which means that it breaks them down and removes them from the blood. Increased amounts of antidiuretic hormone and aldosterone can be caused by various factors, such as dehydration, heart failure, or renal failure. Increased amounts of antidiuretic hormone and aldosterone can cause the kidneys to reabsorb more water and sodium, which can increase the blood volume and the blood pressure, but this is not the main mechanism for ascites development in this client, because the fluid that accumulates in the abdomen is not from the kidneys, but from the capillaries.

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A client develops edema of the left arm and hand following a left radical mastectomy. The nurse explains the cause of the edema. Which explanation is correct?

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