week 4 - hyper tension Flashcards
Factors Influencing Blood Pressure
bp= CO x Systemic Vascular
Resistance
hypertension
Hypertension is sustained elevation of BP
Systolic blood pressure 140 mm Hg
Diastolic blood pressure 90 mm Hg
***The exception is the diabetic patient! These parameters define hypertension in this population
SBP >130
DBP>80
normal bp
120/80
prehypertension
120-139/80-89
stage 1 hypertension
140-159/90-99
stage 2 hypertension
equal or more than 160/100
HIGH BP IS DEFINED AS
PERSISTENT BP OVER
140/90
Elevated readings must be present on at least 3 occasions
over several weeks
Primary (Essential) Hypertension
- Elevated BP with no known cause
- 85-90% of all cases
Secondary Hypertension
Elevated BP with a specific cause
- Approximately 10% of adults
Primary HTN: Risk Factors
**Family Hx of HTN Sodium intake Excessive alcohol intake Physical inactivity Excess calorie intake Low potassium intake **age > 60 Hyperlipidemia **Ethnicity Obesity Smoking Stress intake K+, Ca+, Mg+
Secondary Hypertension: Risk Factors
- Coarctation of aorta
* Renal disease
* Endocrine disorders
* Neurological disorders
HypertensionClinical Manifestations
MAY experience :Dizziness or fainting (syncope)
Headache
Facial flushing
*****Usually asymptomatic until it becomes severe and target organ disease has occurred
HypertensionComplications
The common complications are
target organ diseases occurring in the:
Heart
Brain
Kidney
Eyes
Hypertensive Heart Disease
Coronary artery disease (CAD) Left ventricular hypertrophy (LVH) Heart failure (HF) Cerebrovascular Disease -Stroke Peripheral Vascular Disease Nephrosclerosis Retinal Damage
- Use arm with higher reading for subsequent measurements
- BP highest in early morning, lowest at night
Describe patient teaching for self-monitoring
HypertensionDiagnostic Studies
Routine urinalysis Serum electrolytes BUN and serum creatinine Serum lipid profile ECG **these will identify secondary HTN causes or complications of HTN
• “White coat” phenomenon AND
Masked HTN
high bp in clincal settings and high bp in home settings
DASH Diet (Dietary Approaches to Stop Hypertension)
2-3 servings of low fat milk, yogurt, cheese for calcium
8-10 helpings of fruit and vegetables (bananas, OJ and spinach for potassium)
2400 mg of sodium or less than 6 mg of table salt a day
diet low in saturated fats and rich in fruits/vegetables and low fat dairy foods
limit alcohol
avoid fast food
weight loss
Drug Therapy
ACE (angiotensin converting enzyme) inhibitors ARBs (angiotensin receptor blockers) Calcium channel blockers (CCBs) Beta Blockers Diuretics