Ch. 30 Flashcards
venous insufficiency is a result of
- prolonged venous hypertension
- stretching veins
- damaging valves
venous stasis dermatitis or ulcers, swelling, and cellulitis
causes of venous insufficiency
- standing or sitting for long periods of time
- obesity
- thrombus formation
clinical manifestations of venous insufficiency
- edema of both legs
- stasis dermatitis
goal of management for venous insufficiency
decreases edema and increase venous return
nonsurgical management of venous insufficiency
- management of edema-leg elevation, compression stockings
- management of venous stasis ulcers
- drug therapy
surgical management of venous insufficiency
not usually done because it is not successful
varicose veins
distended, protruding veins that appear darkened and tortuous
- common in adults over 30 whose occupation requires prolonged standing
conservation management of varicose veins: the 3 E’s
elastic stockings
elevation of extremities
exercise
conservation management of varicose veins
- sclerotherapy
- surgical removal/stripping of veins
- endovenous ablation to heat the veins
- 3 E’s: elastic stockings, elevation of extremities, exercise
desired blood pressure: people over 60
below 150/90
desired blood pressure: people younger than 60
below 140/90
according to the JNC 8 guidelines, patients with what BP level should be treated with drug therapy (for HTN)
people over 60: 150/90
people under 60: 140/90
malignant hypertension
aka HTN crisis
- severe type of elevated BP that rapidly progresses, Medical Emergency
- systolic: > 180
- diastolic: > 120
one of the most common health problems seen in primary care settings
hypertension
hypertension is classified as
- essential (primary) or
- secondary
essential (primary) HTN
no real cause; most common form
- not due to medical condition, due to risk factors: diet, sedentary, physical inactivity, smoking
secondary HTN
specific disease states or drugs can increase susceptibility to HTN
- end-stage renal disease (kidney d/o)
- cushings
- pregnancy
hypertension is called the
silent disease
hypertension damages __
the endothelium of blood vessels
mechanisms that influence/control blood pressure
- the arterial baroreceptor system
- regulation of bodily fluid volume
- the renin-angiotensin-aldosterone system
- vascular autoregulation
essential (primary) HTN: risk factors
- Age greater than 60 years
- Family history of hypertension*
- Obesity
- Physical inactivity
- Excessive alcohol intake
- Hyperlipidemia
- African-American ethnicity
- High intake of salt or caffeine
- ↓Intake of K+, Ca+, or Mg+
- Smoking
- Stress
secondary HTN: risk factors/causes
- Kidney disease
- Primary aldosteronism
- Pheochromocytoma
- Cushing’s syndrome
- Pregnancy
- Medications
ABI indicative of PAD
ABI < 0.9
ABI formula
highest systolic pressure from leg
divided by
highest systolic pressure from brachia
how ABI is calculated
leg: R posterior tibial, dorsalis pedis and L posterior tibial, dorsalis pedis
brachia: R and L arm
health promotion and maintenance of HTN
- weight reduction (through diet and exercise)
- DASH diet: dietary approach to stop hypertension (veggies, fruits, proteins, micronutrients, limited Na)
- reduce intake of dietary intake
- increase physical activity
- smoking cessation: nicotine causes vasoconstriction of blood vessels which increases BP
HTN diagnostic assessments
assess for secondary cause, risk and target organ damage
- urinalysis for protein, RBC (r/t kidney d/o, blood vessel constriction)
- Labs- BUN, creatinine
- chest x-ray (cardiomegaly: enlarged heart- mostly w people who have had HTN for a while)
- ECG shows degree of cardiac involvement
HTN patient problems (hint: think mngmnt and compliance)
- need for health teaching due to the plan of care for HTN management
- potential for decreased adherence due to side effects of drug therapy and necessary changes in lifestyle
HTN interventions: Lifestyle modifications
- Sodium restriction (2g Na diet)
- Weight reduction
- DASH diet (if overweight or obese)
- Moderation of alcohol intake (1-2/day if need it)
- Smoking cessation (cut back at least)
- Exercise (decrease weight and reduce vasoconstriction)
- Relaxation techniques (to help with stress)
- Caffeine avoidance (if applicable)
HTN interventions: drug therapy
First Line Options
- Diuretics: HCTZ, furosemide
- Calcium channel blockers:
Dihydropyridines: Amlodipine
Non-Dihydropyridines: Diltiazem/Verapamil
- ACE inhibitors: Lisinopril
- Angiotensin II receptor antagonists: Valsartan, Losartan
Secondary Options (may be paired with 1st line)
- Beta-blockers: Metoprolol
- Central alpha agonists: Clonidine
diuretic water slide
thiazide, loop, and potassium-sparing
- work on kidneys; increase UO to decrease BP
- take in morning (enuresis)
- stay hydrated- don’t want to become dehydrated
- check BP before and after med
- monitor electrolytes daily: potassium (hypokalemia) (spironolactone- hyperkalemia)
- daily weights
- I&Os are equal (daily)
calcium channel blockers: action
blocks calcium access to cells
- decrease contractility
- decreased conductivity of the heart
therefore reducing demand for O2
side effects of calcium channel blockers
- decreased BP
- bradycardia
- may precipitate A-V block
- HA
- abdominal discomfort (constipation, nausea)
- peripheral edema
angiotensin II receptor blockers (ARBs): action
decrease blood pressure
- treat HTN and heart failure
- taken PO
angiotensin II receptor blockers (ARBs): drugs
usually end in “-sartan”
- candesartin
- valsartin
- irbestartan
- losartan
ACE inhibitors: name ends in
ends in “pril”
- lisinopril
- enalapril
- benzapril
- captopril
ACE inhibitors: action
decreases peripheral vascular resistance WITHOUT
- increased cardiac output
- increased cardiac rate
- increased cardiac contractility
ACE inhibitors: side effects
- dizziness
- orthostatic hypotension
- GI distress
- nonproductive cough***
- HA
- electrolytes: hyperkalemia
B-blockers ends in
“olol”
- metoprolol
- atenolol
- propranolol
B-blockers: action
blocks beta receptors in the heart causing:
- decreased heart rate
- decreased force of contraction
- decreased rate of AV conduction
**check BP and HR before giving med
B-blockers: side effects
- bradycardia
- GI disturbance
- CHF
- decreased BP
- depression
drug-nutrient interactions with calcium channel blockers (CCBs)
The grapefruit conundrum- Calcium channel blockers
- interferes with absorption causing higher drug level results
- GI complaints (constipation, nausea)
- Headache
- Flushing
- Bradycardia or reflex tachycardia
- Skin rash
principles of nutrition therapy for HTN patients
- Weight management: Lose weight and maintain appropriate weight for height
- Sodium control (2 g/day maximum)
- Other minerals: calcium, potassium, magnesium
- DASH diet: Lower blood pressure through diet alone
- Additional lifestyle factors: smoking, alcohol, caffeine, exercise
self-management education
- Teach medication compliance, usually for the rest of life
- Discuss goals of therapy, potential side effects, and how to identify potential problems
- Assist patient to understand therapeutic regimen
- Discuss consequence of noncompliance: organ failure: kidney failure (dialysis), heart: MI, brain: CVA
emergency care for HTN crisis (interventions)
- Place pt in semi-fowler’s
- Administer O2
- Administer IV nitroprusside: dilates blood vessels and reduces BP
- Monitor BP q5-15 mins: want BP to come down gradually over a few hours (need to go to ICU for this degree of monitoring/care*)
- Observe for neurologic or cardiovascular complications (LOC; s/ CVA: weakness, speech, facial drooping; MI)
HTN crisis s/sx
- Extremely high BP
- Dizziness
- Blurred vision
- Disoriented
- Severe HA
HTN outcomes
- Verbalize understanding of the plan of care, including drug therapy and any necessary lifestyle changes
- Report adverse drug effects, such as coughing, dizziness, or sexual dysfunction, to the primary health care provider immediately
- Consistently adhere to the plan of care, including regular follow-up with the primary health care provider
peripheral vascular disease
- Disorders that alter the natural flow of blood through the arteries and veins of the peripheral circulation
- Divided into PAD and PVD
PAD is the result of
systemic atherosclerosis
PVD risk factors
- Advancing age
- obesity
- HTN
- DM
- +smoker
- hyperlipidemia
- African American
PAD
Disorders that alter the natural flow of blood through the arteries and veins of the peripheral circulation
- PVD implies arterial disease
PVD: physical assessment
Intermittent claudication
Pain that occurs even while at rest; numbness and burning
Inflow disease
- Discomfort in lower back, buttocks, thighs
Outflow disease
- Burning or cramping in calves, ankles, feet, toes