Chapter 30: Assessment and Management of Patients With Vascular Disorders and Problems of Peripheral Circulation

A nurse is providing education about maintaining tissue integrity to a client with peripheral arterial disease. Which of the following statements by the client indicates a need for clarification?

"Shoes made of synthetic material are best for my feet" The client should wear leather shoes with an extra-depth toebox. Synthetic shoes do not allow air to circulate.

The nurse is assisting a patient with peripheral arterial disease to ambulate in the hallway. What should the nurse include in the education of the patient during ambulation?

"walk until the point of pain, rest until the pain subsides, then resume ambulation" The nurse instructs the patient to walk to the point of pain, rest until the pain subsides, and then resume walking so that endurance can be increased as collateral circulation develops. Pain can serve as a guide in determining the appropriate amount of exercise.

Heparin therapy is usually considered therapeutic when the activated partial thromboplastin time (aPTT) is how many times higher than a normal value?

2 to 2.5 Heparin therapy is usually considered therapeutic when the aPTT is 2 to 2.5 times the normal aPTT value. The other values are not within therapeutic range.

The nurse is monitoring a patient who is on heparin anticoagulant therapy. What should the nurse determine the therapeutic range of the international normalized ratio (INR) should be?

2.0-3.0 Oral anticoagulants, such as warfarin, are monitored by the PT or the INR. Because the full anticoagulant effect of warfarin is delayed for 3 to 5 days, it is usually administered concurrently with heparin until desired anticoagulation has been achieved (i.e., when the PT is 1.5 to 2 times normal or the INR is 2.0 to 3.0) (Holbrook et al., 2012).

In a client with a bypass graft, the distal outflow vessel must have at least what percentage patency for the graft to remain patent?

50% The distal outflow vessel must be at least 50% patent for the graft to remain patent.

A nurse suspects the presence of an abdominal aortic aneurysm. What assessment data would the nurse correlate with a diagnosis of abdominal aortic aneurysm? (Select all that apply.)

A pulsatile abdominal mass Low back pain Lower abdominal pain Some patients complain that they can feel their heart beating in their abdomen when lying down, or they may say that they feel an abdominal mass or abdominal throbbing. The most important diagnostic indication of an abdominal aortic aneurysm is a pulsatile mass in the middle and upper abdomen. Signs of impending aneurysm rupture include severe back or abdominal pain, which may be persistent or intermittent. Abdominal pain is often localized in the middle or lower abdomen to the left of the midline. Low back pain may be present because of pressure of the aneurysm on the lumbar nerves.

The most common site of aneurysm formation is in the:

Abdominal aorta, just below the renal arteries About 75% of aneurysms occur in the abdominal aorta, just below the renal arteries (Debakey type I aneurysms). Debakey type II aneurysms occur in the aortic arch around the ascending and descending aorta, whereas Debakey type III aneurysms occur in the descending aorta, beyond the subclavian arteries.

Which diagnostic test is used to quantify venous reflux and calf muscle pump ejection?

Air plethysmography Air plethysmography is used to quantify venous reflux and calf muscle pump action. Contrast phlebography involves injecting a radiopaque contrast agent into the venous system. Lymphoscintigraphy is done when a radioactively labeled colloid is injected subcutaneously in the second interdigital space. The extremity is then exercised to facilitate the uptake of the colloid by the lymphatic system, and serial images are obtained at preset intervals. Lymphoangiography provides a way to detect lymph node involvement resulting from metastatic carcinoma, lymphoma, or infection in sites that are otherwise inaccessible to the examiner except by surgery.

Which of the following medications is considered a thrombolytic?

Alteplase Alteplase is considered a thrombolytic, which lyses and dissolves thrombi. Thrombolytic therapy is most effective when given within the first 3 days after acute thrombosis. Heparin, Coumadin, and Lovenox do not lyse clots.

To assess the dorsalis pedis artery, the nurse would use the tips of three fingers and apply light pressure to the:

Anterior surface of the fat near the ankle joint The dorsalis pedis pulse can be palpated on the dorsal surface of the foot distal to the major prominence of the navicular bone.

You are presenting a workshop at the senior citizens center about how the changes of aging predisposes clients to vascular occlusive disorders. What would you name as the most common cause of peripheral arterial problems in the older adult?

Atherosclerosis Atherosclerosis is the most common cause of peripheral arterial problems in the older adult. Therefore, options A, B, and D are incorrect.

A client is recovering from surgical repair of a dissecting aortic aneurysm. Which assessment findings indicate possible bleeding or recurring dissection?

Blood pressure of 82/40 mm Hg and heart rate of 125 beats/minute Assessment findings that indicate possible bleeding or recurring dissection include hypotension with reflex tachycardia (as evidenced by a blood pressure of 82/40 mm Hg and a heart rate of 125 beats/minute), decreased urine output, and unequal or absent peripheral pulses. Hematuria, increased urine output, and bradycardia aren't signs of bleeding from aneurysm repair or recurring dissection.

Which of the following is a characteristic of an arterial ulcer?

Border regular and well demarcated Characteristics of an arterial ulcer include a border that is regular and demarcated. Brawny edema, ABI > 0.90, and edema that may be severe are characteristics of a venous ulcer.

Which of the following is accurate regarding the effects of nicotine and tobacco smoke on the body? Select all that apply.

Causes vasospasm Reduces circulation to the extremities Impairs transport and cellular use of oxygen Increases blood viscosity

Health teaching includes advising patients on ways to reduce PAD. The nurse should always emphasize that the strongest risk factor for the development of atherosclerotic lesions is:

Cigarette smoking Nicotine decreases blood flow, increases heart rate and blood pressure, and increases the risk for clot formation by increasing platelet aggregation. Smokers have a four-fold higher risk of developing pain from arterial disease than nonsmokers. Carbon monoxide, produced by burning tobacco, combines with hemoglobin more readily than oxygen, thus depriving tissues of oxygen.

The nurse assesses a patient with hip pain related to intermittent claudication. She knows that the area of arterial narrowing is the:

Common iliac artery The location of the claudication occurs in muscle groups distal to the diseased vessel. Hip or buttock pain may result from reduced blood flow from the common iliac artery.

A patient is suspected to have a thoracic aortic aneurysm. What diagnostic test(s) does the nurse anticipate preparing the patient for? (Select all that apply.)

Computed tomography Transesophageal echocardiography X-ray Diagnosis of a thoracic aortic aneurysm is principally made by chest x-ray, computed tomography angiography (CTA), and transesophageal echocardiography (TEE).

Which of the following are indications of a rupturing aortic aneurysm? Select all that apply.

Constant, intense back pain Decreasing blood pressure Decreasing hematocrit Indications of a rupturing abdominal aneurysm include constant, intense back pain; falling blood pressure; and decreasing hematocrit.

As the clinic nurse caring for a client with varicose veins, what is an appropriate nursing action for this client?

Demonstrate how to apply and remove elastic support stockings The nurse demonstrates how to apply and remove elastic support stockings. Varicose veins do not require the nurse to demonstrate how to self-administer IV infusions. Varicose veins require the client to elevate legs regularly and perform leg exercises. However, it does not involve bleeding or skin lesions.

Which is a characteristic of arterial insufficiency?

Diminished or absent pulses A diminished or absent pulse is a characteristic of arterial insufficiency. Venous characteristics include superficial ulcer formation, an aching and cramping pain, and presence of pulses.

The nurse assessing a client who has arterial insufficiency of the legs and an ulcer on the left great toe would expect to find which characteristic?

Diminished or absent pulses Occlusive arterial disease impairs blood flow and can reduce or obliterate palpable pulsations in the extremities. A diminished or absent pulse is a characteristic of arterial insufficiency.

Which aneurysm results in bleeding into the layers of the arterial wall?

Dissecting Dissection results from a rupture in the intimal layer, resulting in bleeding between the intimal and medial layers of the arterial wall. Saccular aneurysms collect blood in the weakened outpouching. In a false aneurysm, the mass is actually a pulsating hematoma. An anastomotic aneurysm occurs as a result of infection at arterial suture or graft sites.

A patient who had a colon resection 3 days ago is complaining of discomfort in the left calf. How should the nurse assess Homan's sign to determine if the patient may have a thrombus formation in the leg?

Dorsiflex the foot while the leg is elevated to check for calf pain. Homan's sign is indicated by pain in the calf after the foot is sharply dorsiflexed.

A patient is having an angiography to detect the presence of an aneurysm. After the contrast is administered by the interventionist, the patient begins to complain of nausea and difficulty breathing. What medication is a priority to administer at this time?

Epinephrine Infrequently, a patient may have an immediate or delayed allergic reaction to the iodine contained in the contrast agent used in angiography. Manifestations include dyspnea, nausea and vomiting, sweating, tachycardia, and numbness of the extremities. Any such reaction must be reported to the interventionalist at once; treatment may include the administration of epinephrine, antihistamines, or corticosteroids.

Which class of medication lyses and dissolves thrombi?

Fibrinolytic Thrombolytic (fibrinolytic) therapy lyses and dissolves thrombi in 50% of clients. Anticoagulants, platelet inhibitors, and factor XA inhibitors do not lyse or dissolve thrombi.

A nurse is instructing a client about using antiembolism stockings. Antiembolism stockings help prevent deep vein thrombosis (DVT) by:

Forcing blood into the deep venous system Antiembolism stockings prevent DVT by forcing blood into the deep venous system, instead of allowing blood to pool. Ambulation prevents blood from pooling and prevents DVT, but encouraging ambulation isn't a function of the stockings. Antiembolism stockings could possibly provide warmth, but this factor isn't how they prevent DVT. Elevating the extremity decreases edema but doesn't prevent DVT.

Which of the following are complications of percutaneous transluminal balloon angioplasty (PTA)? Select all that apply.

Hematoma Embolization Dissection of the vessel Bleeding Stent migration Complications from PTA include hematoma, embolization dissection of the vessel, bleeding, intimal damage (dissection), and stent migration.

A patient with diabetes is being treated for a wound on the lower extremity that has been present for 30 days. What option for treatment is available to increase diffusion of oxygen to the hypoxic wound?

Hyperbaric oxygen Hyperbaric oxygenation (HBO) may be beneficial as an adjunct treatment in patients with diabetes with no signs of wound healing after 30 days of standard wound treatment. HBO is accomplished by placing the patient into a chamber that increases barometric pressure while the patient is breathing 100% oxygen. Treatment regimens vary from 90 to 120 minutes once daily for 30 to 90 sessions. The process by which HBO is thought to work involves several factors. The edema in the wound area is decreased because high oxygen tension facilitates vasoconstriction and enhances the ability of leukocytes to phagocytize and kill bacteria. In addition, HBO is thought to increase diffusion of oxygen to the hypoxic wound, thereby enhancing epithelial migration and improving collagen production.

The nurse is caring for a patient who has started anticoagulant therapy with warfarin (Coumadin). When does the nurse understand that therapeutic benefits will begin?

In 3-5 days Oral anticoagulants, such as warfarin, are monitored by the PT or the INR. Because the full anticoagulant effect of warfarin is delayed for 3 to 5 days, it is usually administered concurrently with heparin until desired anticoagulation has been achieved (i.e., when the PT is 1.5 to 2 times normal or the INR is 2.0 to 3.0) (Holbrook et al., 2012).

Which sign or symptom suggests that a client's abdominal aortic aneurysm is extending?

Increased abdominal and back pain Pain in the abdomen and back signify that the aneurysm is pressing downward on the lumbar nerve root and is causing more pain. The pulse rate would increase with aneurysm extension. Chest pain radiating down the arm would indicate myocardial infarction. Blood pressure would decrease with aneurysm extension, and the respiratory rate may not be affected.

A client is diagnosed with deep vein thrombosis (DVT). Which nursing diagnosis should receive highest priority at this time?

Ineffective peripheral tissue perfusion related to venous congestion Ineffective peripheral tissue perfusion related to venous congestion takes highest priority because venous inflammation and clot formation impede blood flow in a client with DVT. Impaired gas exchange related to increased blood flow is incorrect because impaired gas exchange is related to decreased, not increased, blood flow. Excess fluid volume related to peripheral vascular disease is inappropriate because there's no evidence that this client has an excess fluid volume. Risk for injury related to edema may be warranted but is secondary to ineffective tissue perfusion.

A client with no known history of peripheral vascular disease comes to the emergency department complaining of sudden onset of lower leg pain. Inspection and palpation reveal absent pulses; paresthesia; and a mottled, cyanotic, cold, and cadaverous left calf. While the physician determines the appropriate therapy, the nurse should:

Keep the affected leg level or slightly dependent While the physician makes treatment decisions, the nurse should maintain the client on bed rest, keeping the affected leg level or slightly dependent (to aid circulation) and protecting it from pressure and other trauma. Warming the leg with a heating pad (or chilling it with an ice pack) would further compromise tissue perfusion and increase injury to the leg. Elevating the leg would worsen tissue ischemia. Shaving an ischemic leg could cause accidental trauma from cuts or nicks.

Which observation regarding ulcer formation on the client's lower extremity indicates to the nurse that the ulcer is a result of venous insufficiency?

Large and superficial Ulcerations are in the area of the medial or lateral malleolus (gaiter area) and are typically large, superficial, and highly exudative. Superficial venous insufficiency ulcers cause minimal pain. The base of a venous insufficiency ulcer shows a beefy red to yellow fibrinous color.

A client is diagnosed with peripheral arterial disease. Review of the client's chart shows an ankle-brachial index (ABI) on the right of 0.45. This indicates that the right foot has which of the following?

Moderate to severe arterial insufficiency Normal people without arterial insufficiency have an ABI of about 1.0. Those with an ABI of 0.95 to 0.5 have mild to moderate arterial insufficiency. Those with an ABI of less than 0.50 have ischemic rest pain. Those with tissue loss have severe ischemia and an ABI of 0.25 or less.

Aortic dissection may be mistaken for which of the following disease processes?

Myocardial Infarction (MI) Aortic dissection may be mistaken for an acute MI, which could confuse the clinical picture and initial treatment. Aortic dissection is not mistaken for stroke, pneumothorax, or angina.

Which risk factor is related to venous stasis for deep vein thrombosis (DVT) and pulmonary embolism (PE)?

Obesity Obesity is a risk factor for DVT and PE related to venous stasis. Trauma, pacing wires, and surgery are related to endothelial damage as a risk factor for DCAT and PE.

A client with Raynaud's disease complains of cold and numbness in the fingers. Which of the following would the nurse identify as an early sign of vasoconstriction?

Pallor Pallor is the initial symptom in Raynaud's followed by cyanosis and aching pain. Gangrene can occur with persistent attacks and interference of blood flow. Clubbing of the fingers is a symptom associated with chronic oxygen deprivation to the distal phalanges.

A nurse is caring for a client following an arterial vascular bypass graft in the leg. What should the nurse plan to assess over the next 24 hours?

Peripheral pulses every 15 minutes after surgery The primary objective in the postoperative period is to maintain adequate circulation through the arterial repair. Pulses, Doppler assessment, color and temperature, capillary refill, and sensory and motor function of the affected extremity are checked and compared with those of the other extremity; these values are recorded initially every 15 minutes and then at progressively longer intervals if the client's status remains stable.

A patient complains of a "stabbing pain and a burning sensation" in his left foot. The nurse notices that the foot is a lighter color than the rest of the skin. The artery that the nurse suspects is occluded would be the:

Posterior tibial Clinical symptoms of PAD are manifested in organs or muscle groups supplied by specific arterial blood flow. The posterior tibial artery is a major artery that is a common site for occlusion.

A postoperative client is receiving heparin after developing thrombophlebitis. The nurse monitors the client carefully for bleeding and other adverse effects of heparin. If the client starts to exhibit signs of excessive bleeding, the nurse should expect to administer an antidote that is specific to heparin. Which agent fits this description?

Protamine Sulfate Protamine sulfate is the antidote specific to heparin. Phytonadione (vitamin K) is the antidote specific to oral anticoagulants such as warfarin. (Heparin isn't given orally.) Thrombin is a hemostatic agent used to control local bleeding. Plasma protein fraction, a blood derivative, supplies colloids to the blood and expands plasma volume; it's used to treat clients who are in shock.

A physician orders blood coagulation tests to evaluate a client's blood-clotting ability. The nurse knows that such tests are important in assessing clients at risk for thrombi, such as those with a history of atrial fibrillation, infective endocarditis, prosthetic heart valves, or myocardial infarction. Which test determines a client's response to oral anticoagulant drugs?

Prothrombin time (PT) PT determines a client's response to oral anticoagulant therapy. This test measures the time required for a fibrin clot to form in a citrated plasma sample following addition of calcium ions and tissue thromboplastin and compares this time with the fibrin-clotting time in a control sample. The physician should adjust anticoagulant dosages as needed, to maintain PT at 1.5 to 2.5 times the control value. Bleeding time indicates how long it takes for a small puncture wound to stop bleeding. The platelet count reflects the number of circulating platelets in venous or arterial blood. PTT determines the effectiveness of heparin therapy and helps physicians evaluate bleeding tendencies. Physicians diagnose appoximately 99% of bleeding disorders on the basis of PT and PTT values.

A female client is readmitted to the facility with a warm, tender, reddened area on her right calf. Which contributing factor should the nurse recognize as most important?

Recent pelvic surgery The client shows signs of deep vein thrombosis (DVT). The pelvic area has a rich blood supply, and thrombophlebitis of the deep veins is associated with pelvic surgery. Aspirin, an antiplatelet agent, and an active walking program help decrease the client's risk of DVT. In general, diabetes mellitus is a contributing factor associated with peripheral vascular disease.

Which of the following is the most effective intervention for preventing progression of vascular disease?

Risk factor modification Risk factor modification is the most effective intervention for preventing progression of vascular disease. Measures to prevent tissue loss and amputation are a high priority. Patients are taught to avoid trauma; wear sturdy, well-fitting shoes or slippers; and use pH neutral soaps and body lotions.

The nurse is caring for a client with abdominal aortic aneurysm (AAA). Which assessment finding is most likely to indicate a dissection of the aneurysm?

Severe back pain, because the abdominal aortic aneurysm happens near the kidneys Pressure from an enlarging or dissecting abdominal aortic aneurysm is likely to be exhibited as severe back pain. A decrease in blood pressure will result as the client goes into shock from hemorrhaging. Blood in emesis or rectal bleeding is not associated with rupture of AAA.

Which of the following are alterations noted in Virchow's triad? Select all that apply.

Stasis of blood Vessel wall injury Altered coagulation Three factors, known as Virchow's triad, are believed to play a significant role in the development of venous thrombosis. They are stasis of blood, vessel wall injury, and altered coagulation. Edema and tenderness are clinical manifestations of venous thrombosis, but are not part of the triad.

A nurse is providing education about the prevention of arterial constriction to a client with peripheral arterial disease. Which of the following includes priority information the nurse would give to the client?

Stop smoking Nicotine from tobacco products causes vasospasm and can thereby dramatically reduce circulation to the extremities. When the client elevates the feet above the heart level, the heart must work against gravity to supply blood to the feet. Antiembolytic stocking are helpful for venous return to the heart, but constriction is not helpful for lack of arterial blood flow. Crossing the legs for more than a few minutes at a time compresses arteries and decreases blood supply to the legs and feet.

On a routine visit to the physician, a client with chronic arterial occlusive disease reports that he's stopped smoking after 34 years. To relieve symptoms of intermittent claudication, a condition associated with chronic arterial occlusive disease, which additional measure should the nurse recommend?

Taking daily walks Taking daily walks relieves symptoms of intermittent claudication, although the exact mechanism is unclear. Anaerobic exercise may make these symptoms worse. Clients with chronic arterial occlusive disease must reduce daily fat intake to 30% or less of total calories. The client should limit dietary cholesterol because hyperlipidemia is associated with atherosclerosis, a known cause of arterial occlusive disease. However, HDLs have the lowest cholesterol concentration, so this client should eat, not abstain from, foods that raise HDL levels.

What should the nurse do to manage persistent swelling in a client with severe lymphangitis and lymphadenitis?

Teach the client how to apply a graduated compression stocking. In severe cases of lymphangitis and lymphadenitis with persistent swelling, the nurse teaches the client how to apply a graduated compression stocking. The nurse informs the physician if the client's temperature remains elevated. The nurse recommends elevating the area to reduce the swelling and provides warmth to promote comfort and to enhance circulation.

A client with a diagnosed abdominal aortic aneurysm (AAA) develops severe lower back pain. Which is the most likely cause?

The aneurism may be preparing to rupture Signs of impending rupture include severe back or abdominal pain, which may be persistent or intermittent. Abdominal pain is often localized to the middle or lower abdomen to the left of the midline. Low-back pain may be present because of pressure of the aneurysm on the lumbar nerves. Indications of a rupturing AAA include constant, intense back pain; falling blood pressure; and decreasing hematocrit. Rupture into the peritoneal cavity is quickly fatal. A retroperitoneal rupture of an aneurysm may result in hematomas in the scrotum, perineum, flank, or penis.

The most important factor regulating the caliber of blood vessels, which determines resistance to flow, is:

The sympathetic nervous system Stimulation of the sympathetic nervous system causes vasoconstriction thus regulating blood flow. Norepinephrine is the responsible neurotransmitter.

The nurse is caring for a patient with venous insufficiency. What should the nurse assess the patient's lower extremities for?

Ulceration Venous ulceration is the most serious complication of chronic venous insufficiency and can be associated with other conditions affecting the circulation of the lower extremities. Cellulitis or dermatitis may complicate the care of chronic venous insufficiency and venous ulcerations.

A home health nurse is seeing an elderly male client for the first time. During the physical assessment of the skin on the lower legs, the nurse notes edema, brown pigmentation in the gater area, pedal pulses, and a few irregularly shaped ulcers around the ankles. From these findings, the nurse knows that the client has a problem with peripheral circulation. Which of the following does the nurse suspect?

venous insufficiency Symptoms of venous insufficiency include present pedal pulses, edema, pigmentation in gater area, and a reddish blue color. Ulcers caused by venous insufficiency will be irregular in shape and usually located around the ankles or the anterior tibial area. Characteristics of arterial insufficiency ulcers include location at the tips of the toes, great pain, and circular shape with a pale to black ulcer base.