HTN Flashcards
HTN is most prevalent in which race
blacks > whites > hispanics
normal blood pressure values
- systolic pressure < 120 mmHg
- diastolic pressure < 80 mmHg
what blood pressure values classify as pre-hypertension
- systolic pressure 120-139 mmHg OR
- diastolic pressure 80-89 mmHg
what blood pressure values classify as stage 1 HTN
- systolic 140-159 mmHg OR
- diastolic 90-99 mmHg
what blood pressure values classify as stage 2 HTN
- systolic > or = 160 mmHg OR
- diastolic > or = 100 mmHg
equation for blood pressure
BP = CO x systemic vascular resistance
what are the major factors that determine BP
- sympathetic nervous system
- Renin angiotensin aldosterone system
- plasma volume
what are the modifiable risk factors for primary HTN
- smoking
- high sodium diet
- excess alcohol intake
- obesity/weight gain
- physical inactivity
- dyslipidemia
- vitamin D deficiency
primary HTN accounts for what percentage of diagnosed HTN
90-95% of all HTN
what is secondary HTN
- increased BP resulting from an identifiable medication or medical condition
- must be addressed to achieve adequate BP control
- 5-10% of all HTN
what are the major conditions that are associated with secondary HTN
- renal disease
- medication induced: estrogen, NSAIDS, steroids
- Thyroid, Parathyroid disease
- Coarctation of aorta
- primary hyperaldosteronism
- Cushing’s syndrome
- Pheochromocytoma (hypertensive emergency: HA, sweating, tachycardia)
- obstructive sleep apnea
united states preventive services task force recommendation for screening for HTN
- all individuals 18 or older should be screened
- adults 40 yo or older should be measured at least annually
- adults betwwen 18-39 should be screened annually if they have risk factors or previously measured BP was elevated
- adults betwwen 18-39 without risk ractors and high BP should be screened at least every 3 years
gold standard for diagnosing HTN
- ambulatory blood pressure monitoring
- if BP elevated at screening, the diagnosis should be confirmed using out of office BP measurement
general principles you should tell patient when having them check BP outside of office
- serial measurements required
- measure on both arms
- comfortable, quiet setting
- avoid eating, exercise, smoking, and caffeine
Physical exam for a person who is hypertensive
- vitals
- BMI, waist circumference
- BP both arms
- pulses
- general
- body fat distribution
- skin lesions
- muscle strength
- alertness
- HEENT
- fundoscopy for hemorrhage
- cotton wool spots
- Neck
- carotids, thyroid
- Respiratory: rales
- Cardiac
- displaced PMI or new murmur
- Abd
- renal masses
- abdominal aorta
- Neuro
- visual disturbance
- focal weakness
- confusion
what tests should you always order when evaluating for HTN
- LUBE
- Lipid panel
- UA
- Basic metabolic panel
- fasting glucose
- creatinine, electrolytes, GFR
- EKG
what is the first line treatment for all patients with essential HTN
Lifestyle modifications
- Diet
- lower sodium intake
- DASH diet
- alcohol reduction
- Exercise
- 3-4x/week (40 min, mod-vigorous)
- healthy weight
- smoking cessation
What are the BIG FOUR medications when it comes to treating HTN
- Diuretics
- Angiotensin Converting Enzyme inhibitors (ACE-I)
- Angiotensin II receptor blockers (ARB)
- calcium channel blockers
What other four medications can be used to treat HTN if the BIG FOUR aren’t working
- beta blockers
- alpha blockers
- central alpha agonist
- direct renin inhibitor
What is everybody’s treatment threshold/goal for BP. What is the exeption
- 140/90
- exception is people over 60 yo who don’t have kidney disease or diabetes, in which case their goal is 150/90
In the general nonblack population, including those with diabetes, initial antihypertensive treatment should include
- One of BIG FOUR
- thiazide type diuretic
- calcium channel blocker
- angiotensin-converting enzyme inhibitor
- Angiotensin II receptor blockers
In the general black population, including those with diabetes, initial antihypertensive treatment should include
- thiazide-type diuretic OR
- Calcium channel blockers
Adults with chronic kidney disease should be put on which drugs regardless of race or diabetes status
- angiotensin II receptor blocker (ARB)
- angiotensin converting enzyme inhibitor (ACE-I)
Medication recommendation summary (put CKD, race recommendations all together)
- if you have CKD, start with ACEI or ARB
- if you are black, start with thiazide or CCB
- neither? start with any one of BIG FOUR
if a single antihypertensive drug doesn’t work, what should you do
- add a second drug from another class
- if that doesn’t work, add another from one of the remaining classes
- **Don’t use ACEI and ARB together
- ex:
- ACE, thiazide, CCB
- ARB, thiazide, CCB
If the patient is taking three out of the four BIG FOUR classes of antihypertensives and still hasn’t reached the target goal, what should you do
- consider other classes of medications or refer to specialist
what is resistant hypertension. How should you manage it
- blood pressure that is not controlled despite adherence to an appropriate three drug regimen or requires at least four medications to achieve control
- ensure adherence to lifestyle changes, medication regimen, and accurate measurement
- consider referral
How would you treat
- 65 yo white male with BP 170/90
- lifestyle management
- target goal BP: < 150/90
- place him on ACEI, ARB, CCB, or Thiazide