HTN Flashcards
What are the 3 factors need to maintain adequate pressure in the cardiovascular system
- Functioning pump
- Sufficient fluid volume
- Vascular resistance
Diagnostic Studies for HTN
ECG: L Ventricular hypertrophy Decreased H&H Elevated BUN, creatinine, urine protein and glucose Serum K, Ca, and uric acid Plasma aldosterone concentration Lipid panel
After diagnosis, what is the treatment goal?
> 140/90
After diagnosis of HTN in pt with DM or CKD, what is treatment goal?
> 130/80
Nonpharmacologic therapies for HTN
DASH Exercise Weight loss Smoking cessation ETOH decrease
Initiating pharmacologic therapies for HTN in pt with DM and CKD
Initiate drug therapy immediately if BP is > 140/90 at diagnosis along with lifestyle changes
How many drugs does stage 2 (>160 systolic or >100 diastolic) its require to lower BP?
2
What are the drugs available for HTN?
Diuretics B-adrenergic antagonists Angiotensin-converting enzyme inhibitors Angiotensin II Receptor Blockers Calcium channel blockers
What drug is considered 1st line in treating Essential HTN?
Diuretics: Thiazides are consistently effective
How do diuretics work to treat HTN?
Initially reduce plasma volume & chronically reduce PVR
Potassium supplements may be needed
Who can use loop diuretics?
HTN pt with renal dysfunction
How do Beta Blockers work to treat HTN?
Decrease HR & CO
What pt population do BB work best in?
Young white adults
Reduce mortality after MI in pt with heart failure
What pt population must you be careful to use BB with when treating HTN?
Pt with pulmonary disease or DM
How do ACE-I work?
Inhibit bradykinin degradation (inflammatory mediator that vasodilate) (initiates cough)
Stimulate vasodilating prostaglandins (vasodilation)