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Chapter 62 Management of Patients With Cerebrovascular Disorders

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Presentation on theme: "Chapter 62 Management of Patients With Cerebrovascular Disorders"— Presentation transcript:

1 Chapter 62 Management of Patients With Cerebrovascular Disorders

2 Cerebrovascular Disorders
Functional abnormality of the CNS that occurs when the blood supply is disrupted Stroke is the primary cerebrovascular disorder and the third leading cause of death in the U.S. Stroke is the leading cause of serious long-term disability in the U.S. Direct and indirect costs of stroke are $53.6 billion

3 Prevention Nonmodifiable risk factors
Age (over 55), male gender, African American race Modifiable risk factors: see Chart 62-1 Hypertension: the primary risk factor Cardiovascular disease Elevated cholesterol or elevated hematocrit Obesity Diabetes Oral contraceptive use Smoking and drug and alcohol abuse

4 Stroke “Brain attack” Sudden loss of function resulting from a disruption of the blood supply to a part of the brain Types of stroke: see Table 62-1 Ischemic (80% to 85%) Hemorrhagic (15% to 20%)

5 Ischemic Stroke Disruption of the blood supply due to an obstruction, usually a thrombus or embolism, that causes infarction of brain tissue Types Large artery thrombosis Small penetrating artery thrombosis Cardiogenic embolism Cryptogenic Other

6 Pathophysiology

7 Manifestations of Ischemic Stroke
Symptoms depend upon the location and size of the affected area Numbness or weakness of face, arm, or leg, especially on one side Confusion or change in mental status Trouble speaking or understanding speech Difficulty in walking, dizziness, or loss of balance or coordination Sudden, severe headache Perceptual disturbances See Tables 62-2 and 62-3

8 Cerebrovascular Terms
Hemiplegia Hemiparesis Dysarthria Aphasia: expressive aphasia, receptive aphasia Hemianopsia

9 Transient Ischemic Attack (TIA)
Temporary neurologic deficit resulting from a temporary impairment of blood flow “Warning of an impending stroke” Diagnostic work-up is required to treat and prevent irreversible deficits

10 Carotid Endarterectomy

11 Preventive Treatment and Secondary Prevention
Health maintenance measures including a healthy diet, exercise, and the prevention and treatment of periodontal disease Carotid endarterectomy Anticoagulant therapy Antiplatelet therapy: aspirin, dipyridamole (Persantine), clopidogrel (Plavix), and ticlopidine (Ticlid) Statins Antihypertensive medications

12 Medical Management During Acute Phase of Stroke
Prompt diagnosis and treatment Assessment of stroke: NIHSS assessment tool Thrombolytic therapy Criteria for tissue plasminogen activator (tPA): see Chart 62-2 IV dosage and administration Patient monitoring Side effects: potential bleeding

13 Medical Management During Acute Phase of Stroke (cont.)
Elevate HOB unless contraindicated Maintain airway and ventilation Provide continuous hemodynamic monitoring and neurologic assessment See the guidelines in Appendix B

14 Hemorrhagic Stroke Caused by bleeding into brain tissue, the ventricles, or subarachnoid space May be due to spontaneous rupture of small vessels primarily related to hypertension; subarachnoid hemorrhage due to a ruptured aneurysm; or intracerebral hemorrhage related to amyloid angiopathy, arterial venous malformations (AVMs), intracranial aneurysms, or medications such as anticoagulants

15 Hemorrhagic Stroke (cont.)
Brain metabolism is disrupted by exposure to blood ICP increases due to blood in the subarachnoid space Compression or secondary ischemia from reduced perfusion and vasoconstriction injures brain tissue

16 Manifestations Similar to ischemic stroke Severe headache
Early and sudden changes in LOC Vomiting

17 Medical Management Prevention: control of hypertension
Diagnosis: CT scan, cerebral angiography, and lumbar puncture if CT is negative and ICP is not elevated to confirm subarachnoid hemorrhage Care is primarily supportive Bed rest with sedation Oxygen Treatment of vasospasm, increased ICP, hypertension, potential seizures, and prevention of further bleeding

18 Intracranial Aneurysms

19 Nursing Process—Assessing the Patient Recovering From an Ischemic Stroke
Acute phase Ongoing/frequent monitoring of all systems including vital signs and neurologic assessment: LOC and motor, speech, and eye symptoms Monitor for potential complications including musculoskeletal problems, swallowing difficulties, respiratory problems, and signs and symptoms of increased ICP and meningeal irritation After the stroke is complete Focus on patient function; self-care ability, coping, and teaching needs to facilitate rehabilitation

20 Nursing Process—Diagnosis of the Patient Recovering From an Ischemic Stroke
Impaired physical mobility Acute pain Self-care deficits Disturbed sensory perception Impaired swallowing Urinary incontinence

21 Nursing Process—Diagnosis of the Patient Recovering From an Ischemic Stroke (cont.)
Disturbed thought processes Impaired verbal communication Risk for impaired skin integrity Interrupted family processes Sexual dysfunction

22 Collaborative Problems/Potential Complications
Decreased cerebral blood flow Inadequate oxygen delivery to brain Pneumonia

23 Nursing Process—Planning Patient Recovery After an Ischemic Stroke
Major goals include: Improved mobility Avoidance of shoulder pain Achievement of self-care Relief of sensory and perceptual deprivation Prevention of aspiration Continence of bowel and bladder

24 Nursing Process—Planning Patient Recovery After an Ischemic Stroke (cont.)
Major goals include (cont): Improved thought processes Achievement of a form of communication Maintenance of skin integrity Restoration of family functioning Improved sexual function Absence of complications

25 Interventions Focus on the whole person
Provide interventions to prevent complications and to promote rehabilitation Provide support and encouragement Listen to the patient

26 Improving Mobility and Preventing Joint Deformities
Turn and position the patient in correct alignment every 2 hours Use splints Practice passive or active ROM 4 to 5 times day Position hands and fingers Prevent flexion contractures Prevent shoulder abduction Do not lift by flaccid shoulder Implement measures to prevent and treat shoulder problems

27 Positioning to Prevent Shoulder Abduction

28 Prone Positioning to Help Prevent Hip Flexion

29 Improving Mobility and Preventing Joint Deformities
Perform passive or active ROM 4 to 5 times day Encourage patient to exercise unaffected side Establish regular exercise routine Use quadriceps setting and gluteal exercises Assist patient out of bed as soon as possible: assess and help patient achieve balance and move slowly Implement ambulation training

30 Interventions Enhance self-care Set realistic goals with the patient
Encourage personal hygiene Ensure that patient does not neglect the affected side Use assistive devices and modification of clothing Provide support and encouragement Implement strategies to enhance communication: see Chart 62-4 Encourage the patient with visual field loss to turn his head and look to side

31 Interventions (cont.) Nutrition
Consult with speech therapist or nutritionist Have patient sit upright to eat, preferably OOB Use chin tuck or swallowing method Feed thickened liquids or pureed diet Bowel and bladder control Assess and schedule voiding Implement measures to prevent constipation: fiber, fluid, and toileting schedule Provide bowel and bladder retraining

32 Nursing Process—Assessment of the Patient With a Hemorrhagic Stroke/Cerebral Aneurysm
Complete an ongoing neurologic assessment: use neurologic flow chart Monitor respiratory status and oxygenation Monitor ICP Monitor patients with intracerebral or subarachnoid hemorrhage in the ICU Monitor for potential complications Monitor fluid balance and laboratory data Reported all changes immediately

33 Nursing Process—Diagnosis of the Patient With a Hemorrhagic Stroke/ Cerebral Aneurysm
Ineffective tissue perfusion (cerebral) Disturbed sensory perception Anxiety

34 Collaborative Problems/Potential Complications
Vasospasm Seizures Hydrocephalus Rebleeding Hyponatremia

35 Nursing Process—Planning Care of the Patient With a Hemorrhagic Stroke/Cerebral Aneurysm
Goals may include: Improved cerebral tissue perfusion Relief of sensory and perceptual deprivation Relief of anxiety Absence of complications

36 Aneurysm Precautions Absolute bed rest
Elevate HOB 30° to promote venous drainage or keep the bed flat to increase cerebral perfusion Avoid all activity that may increase ICP or BP; implement Valsalva maneuver, acute flexion, and rotation of the neck or head Exhale through mouth when voiding or defecating to decrease strain

37 Aneurysm Precautions (cont.)
Nurse provides all personal care and hygiene Provide nonstimulating, nonstressful environment: dim lighting, no reading, no TV, and no radio Prevent constipation Restrict visitors

38 Interventions Relieve sensory deprivation and anxiety
Keep sensory stimulation to a minimum for aneurysm precautions Implement reality orientation Provide patient and family teaching Provide support and reassurance Implement seizure precautions Implement strategies to regain and promote self-care and rehabilitation

39 Home Care and Teaching for the Patient Recovering From a Stroke
Prevention of subsequent strokes, health promotion, and implementation of follow-up care Prevention of and signs and symptoms of complications Medication teaching Safety measures Adaptive strategies and use of assistive devices for ADLs

40 Home Care and Teaching for the Patient Recovering From a Stroke (cont
Nutrition: diet, swallowing techniques, and tube feeding administration Elimination: bowel and bladder programs and catheter use Exercise and activities: recreation and diversion Socialization, support groups, and community resources See Chart 62-6

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