Chapter 21 - Q & A Flashcards
Which statement is true regarding the arterial system?
a. Arteries are large-diameter vessels.
b. The arterial system is a high-pressure system.
c. The walls of arteries are thinner than those of the veins.
d. Arteries can greatly expand to accommodate a large blood volume increase.
ANS: B
The pumping heart makes the arterial system a high-pressure system.
The nurse is reviewing the blood supply to the arm. What major artery supplies blood to the arm?
a. Ulnar
b. Radial
c. Brachial
d. Deep palmar
ANS: C
The major artery supplying blood to the arm is the brachial artery. The brachial artery bifurcates into the ulnar and radial arteries immediately below the elbow. In the hand, the ulnar and radial arteries form two arches known as the superficial and deep palmar
arches.
The nurse is preparing to assess the dorsalis pedis artery. Where is the correct location for palpation?
a. Behind the knee
b. Over the lateral malleolus
c. In the groove behind the medial malleolus
d. Lateral to the extensor tendon of the great toe
ANS: D
The dorsalis pedis artery is located on the dorsum of the foot. The nurse should palpate just lateral to and parallel with the extensor tendon of the big toe. The popliteal artery is palpated behind the knee. The posterior tibial pulse is palpated in the groove between
the malleolus and the Achilles tendon. No pulse is palpated at the lateral malleolus.
A 65-year-old patient is experiencing pain in his left calf when he exercises which disappears after resting for a few minutes. What problem in the left leg does this indicate?
a. Venous obstruction
b. Partial blockage of an artery
c. Claudication due to venous abnormalities
d. Ischemia caused by the complete blockage of an artery
ANS: B
These symptoms indicate ischemia, a deficient supply of oxygenated arterial blood to the tissue, in the leg. A partial blockage creates an insufficient supply and may be apparent only during exercise when oxygen needs increase and is relieved with rest. Although the term for this is claudication, it is due to insufficient arterial blood, not venous abnormalities. With a complete blockage of an artery, the pain would be constant, not just with walking/exercise, and would not be relieved with rest.
The nurse is reviewing venous blood flow patterns. Which of these statements best describes the mechanism(s) by which venous blood returns to the heart?
a. Intraluminal valves ensure unidirectional flow toward the heart.
b. Contracting skeletal muscles milk blood distally toward the veins.
c. High-pressure system of the heart helps facilitate venous return.
d. Increased thoracic pressure and decreased abdominal pressure facilitate venous return to the heart.
ANS: A
Blood moves through the veins by (1) contracting skeletal muscles that milk the blood proximally back toward the heart; (2) pressure gradients caused by breathing, during which inspiration makes the thoracic pressure decrease and the abdominal pressure increase; and (3) the intraluminal valves, which ensure unidirectional flow toward the heart.
Which vein(s) is(are) responsible for most of the venous return in the arm?
a. Deep
b. Ulnar
c. Subclavian
d. Superficial
ANS: D
The superficial veins of the arms are in the subcutaneous tissue and are responsible for most of the venous return.
A 70-year-old patient is scheduled for open-heart surgery. The surgeon plans to use the great saphenous vein for the coronary bypass grafts. The patient asks, “What happens to my circulation when this vein is removed?” How should the nurse reply?
a. “Venous insufficiency is a common problem after this type of surgery.”
b. “Oh, you have lots of veins—you won’t even notice that it has been removed.”
c. “You will probably experience decreased circulation after the vein is removed.”
d. “This vein can be removed without harming your circulation because the deeper veins in your leg are in good condition.”
ANS: D
As long as the femoral and popliteal veins remain intact, the superficial veins can be excised without harming circulation. The other responses are not correct. Venous insufficiency or decreased circulation is not a common problem with this procedure. The nurse should not just say “you won’t even notice” but should provide more factual information.
The nurse is reviewing the risk factors for venous disease. Which of these situations best describes a person at highest risk for the development of venous disease?
a. Person who has been on bed rest for 4 days
b. Older adult taking anticoagulant medication
c. Woman in the second month of her first pregnancy
d. Person with a 30-year, 1 pack per day smoking habit
ANS: A
Efficient venous return depends on contracting skeletal muscles, competent valves in the veins, and a patent lumen. Problems with any of these three elements lead to venous stasis. People who undergo prolonged standing, sitting, or bed rest are at risk for venous disease because they do not benefit from the milking action to the veins that walking accomplishes. Hypercoagulable (not anticoagulated) states and vein wall trauma also place the person at risk for venous disease. Obesity and multiple pregnancies are also risk factors. Smoking is a risk factor for arterial disease, not venous disease
The nurse is teaching a review class on the lymphatic system. Which statement by a class participant indicates correct understanding of the material?
a. “Lymph flow is propelled by the contraction of the heart.”
b. “The flow of lymph is slow, compared with that of the blood.”
c. “One of the functions of the lymph is to absorb lipids from the biliary tract.”
d. “Lymph vessels have no valves; therefore, lymph fluid flows freely from the tissue spaces into the bloodstream.”
ANS: B
The flow of lymph is slow, compared with flow of the blood. Lymph flow is not propelled by the heart but rather by contracting skeletal muscles, pressure changes secondary to breathing, and contraction of the vessel walls. Lymph does not absorb lipids from the biliary tract. The vessels do have valves; therefore, flow is one way from the tissue spaces to the bloodstream.
When performing an assessment of a patient, the nurse notices the presence of an enlarged right epitrochlear lymph node. What should the nurse do next?
a. Assess the patient’s abdomen, and notice any tenderness.
b. Carefully assess the cervical lymph nodes, and check for any enlargement.
c. Ask additional health history questions regarding any recent ear infections or sore throats.
d. Examine the patient’s lower arm and hand, and check for the presence of infection or lesions.
ANS: D
The epitrochlear nodes are located in the antecubital fossa and drain the hand and lower arm. The nurse should examine the
patient’s lower arm and hand, and check for the presence of infection or lesions. The other actions are not correct for this assessment finding. The epitrochlear nodes are located in the antecubital fossa and drain the hand and lower arm, thus, there is no need to assess the patient’s abdomen, cervical lymph nodes, or ask about recent ear infections or sore throats based on an enlarged epitrochlear lymph node. Instead, the nurse should examine the patient’s lower arm and hand, and check for the presence of infection or lesions.
A 35-year-old man is seen in the clinic for an infection in his left foot. Which of these findings should the nurse expect to see during an assessment of this patient?
a. Hard and fixed cervical nodes
b. Enlarged and tender inguinal nodes
c. Bilateral enlargement of the popliteal nodes
d. Pelletlike nodes in the supraclavicular region
ANS: B
The inguinal nodes in the groin drain most of the lymph of the lower extremities. With local inflammation, the nodes in that area become swollen and tender. Since it is the inguinal nodes that drain the lymph from the lower extremities, the cervical and supraclavicular lymph nodes would not be affected and there are no popliteal lymph nodes.
The nurse is examining the lymphatic system of a healthy 3-year-old child. Which finding should the nurse expect?
a. Palpable superficial lymph nodes
b. Excessive swelling of the lymph nodes
c. No palpable nodes because of the immature immune system of a child
d. Fewer and smaller sized lymph nodes compared with those of an adult
ANS: A
Lymph nodes are relatively large in children, and the superficial ones are often palpable even when the child is healthy.
During an assessment of an older adult, the nurse should expect to which finding as a normal physiologic change associated with
the aging process?
a. Hormonal changes causing vasodilation and a resulting drop in blood pressure
b. Progressive atrophy of the intramuscular calf veins, causing venous insufficiency
c. Peripheral blood vessels growing more rigid with age, producing a rise in systolic blood pressure
d. Narrowing of the inferior vena cava, causing low blood flow and increases in venous pressure resulting in varicosities
ANS: C
Peripheral blood vessels become more rigid with age, resulting in a rise in systolic blood pressure. Aging produces progressiveenlargement of the intramuscular calf veins, not atrophy. The other options are not correct. Although older age does increase the risk for varicose veins, it is due to the thinning of elastic lamina of veins and degeneration of vascular smooth muscle, not narrowing of the inferior vena cava.
A 67-year-old patient states that he recently began to have pain in his left calf when climbing the 10 stairs to his apartment. This pain is relieved by sitting for “a couple of minutes”; then he is able to resume his activities. What do these symptoms suggest?
a. Claudication
b. Sore muscles
c. Muscle cramps
d. Venous insufficiency
ANS: A
Intermittent claudication feels like a cramp and is usually relieved by rest within 2 minutes. The other responses are not correct. Sore muscles and muscle cramps do not usually occur while performing an activity, but afterwards, and are not relieved by resting for a couple of minutes. Venous insufficiency does not cause pain with walking or exercise that is relieved by rest, but rather presents with edema, thickened skin, and brown discoloration in lower legs. The symptoms this patient described suggest intermittent claudication.
A patient complains of leg pain that wakes him at night. He states that he “has been having problems” with his legs. He has pain in his legs when they are elevated that disappears when he dangles them. He recently noticed “a sore” on the outer aspect of the right ankle. What do these findings suggest?
a. Pain r/t lymphatic abnormalities
b. Problems r/t venous insufficiency
c. Problems r/t arterial insufficiency
d. Pain r/t musculoskeletal abnormalities
ANS: C
Night leg pain is common in aging adults and may indicate the ischemic rest pain of peripheral arterial disease (PAD). Alterations in arterial circulation cause pain that becomes worse with leg elevation and is eased when the extremity is dangled. In addition, ulcers associated with PAD, or arterial ulcers, often occur on the lateral ankle (as in this patient), toes, metatarsal heads, and heels.