Hypertension Part II Flashcards
PA recommendations HTN
Accumulation of moderate PA of 30-60mins/day on most days (4-7 days) in addition to daily living activities. Increasing PA should be GRADUAL to avoid stressing out the heart
Nutriton Diagnosis HTN
- Excessive E
- Excessive fats
- Excessive sodium
- Inadequate PA
- Overweight/obese
Nutrition Intervention HTN (What to do in conjunction with anti-hypertensives?)
- DASH
- Weight-loss
- Sodium
- Increase K+/Ca2+/Mg2+
- PA
- Smoking cessation
- Stress management
Key nutrients to increase in HTN
- Potassium
- Magnesium
- Calcium
- Fibres
Weight-loss of 10-15%
SBP decrease by 5-20 mmHg
DASH diet
SBP decrease by 8-14 mmHg
Lower sodium diet
SBP decrease by 2-8 mmHg
Sources of fibre/energy
Whole grains
Sources of K+/Mg/Fibre
Dark green and orange veg, apples, apricots, grapes, tangerines
Sources of calcium/protein
Low-fat dairy
Sources of protein/Mg
Lean trimmed meats, opt for broil/poach/roasted poultry
Sources of energy/fibre/protein/mg2+
Nuts, lentils, legumes
How was DASH diet evidenced to be effective against HTN?
When compared to control, and control with high fruit and veg, “mixed diet” (dash diet) showed negative correlation with BP
What happened when subjects consumed the high fruits/veg control diet (SAD diet but more fruits and veg)
Saw 1/2 amounts of decreased BP compared to DASH diet
Is dash-diet a sodium restrictive diet?
NO
DASH diet - sodium =
Moderate
Dash diet - potassium =
High
DASH diet - calcium =
Meet DRI
DASH diet - magnesium =
HIGH
DASH diet - fibre =
HIGH
DASH diet - fat AMDR =
27%
DASH diet - SFA AMDR =
6% (low)
DASH diet - protein AMDR =
18%
DASH diet - CHO AMDR =
55%
What would be the first dietary intervention?
Switch to DASH like diet, THEN reduce sodium intake to the UL
(T/F) Once all patients start DASH diet, they should work towards consuming a low-sodium dash diet
False, unless they have refractory HTN (all other lifestyle mods without reaching target goals)
What did the Omni-heart study reveal?
That DASH diets rich in protein and rich is unsaturated FA (Mostly MUFA) further reduced BP in hypertensive individuals, but increasing CHO did not.
What were the effects of high-fat/low-CHO DASH diet?
- Similar decrease in BP
- Deceased TG
- Decrease large/medium VLDL
- Did NOT decrease LDL, but increased diameter (less atherogenic)
What does the HF/LC DASH diet suggest?
That low fat dairy products may not be required to reap benefits (recall SFA and dairy does not increase CVD risk), and patient can consume “high” fat of they do not need to lose weight
Ultimately, what does the DASH diet do?
Deceased BP and CVD risk
What is first-line treatment?
Medications
What is ALWAYS recommended to go with first-line treatment?
Health behavioural management
In Low-risk patient (no TOD or CVD risk) what is the threshold to begin drug treatment?
160/100
In patient with TOD or CVD risk factors, what is the threshold to begin drug treatment?
140/90
In the very elderly, what is the threshold to begin drug treatment?
160 (Due to high risk:benefit ratio)
Why increase threshold for elderly HTN treatment?
Since side-effect may be more serious than benefits, and does not have an optimal risk:benefit ratio
Arrange the following anti-HTN in order of prescription: Single-Pill combination ACE-1 B-Blockers ARB Thiazide/Loop-diuretics Calcium Channel Blockers
Thiaide/Loop-diuretics ACE-1 ARB Calcium Channel Blockers B-Blockers Single-Pill combination
(T/F) When a patient is not responsive to a medication, physician may add on another medication rather than increasing dosage
True - better to act on more than one mechanism and is the rationale behind the single-pill combination
What are some considerations when prescribing anti-hypertensives?
- Metabolized by kidney and liver –> Issues with organs?
- Drug/nutrient interaction –> Avoid natural licorice, grapefruit
- Nutritional status –> Low albumin may impact drug transport
- Physiological status –> Age, pregnancy, lactation
anti-HTN appropriate for diabetics? (ADA)
ACE-I
Diuretics
ARB
anti-HTM appropriate for Coronary Artery Disease?
All but diuretics
What should NOT be used in Heart Failure?
Calcium channel blockers
Diuretics
Mechanism of loop/thiazide diuretics
Decrease Na+/K+ reabsorption and cause osmotic diuresis. Na, K+ and H+ losses, must monitor potassium levels –> Risk of HYPOKALEMIA
K-sparing diuretics mechanism
Inhibit aldosterone, less Na+ into blood stream while retaining potassium. Risk of HYPERKALEMIA if taking supplements at the same time
Loop diuretics example
Furosemide/Lasix
Loop diuretics side-effects
Hypokalemia, hyperglycemia, anorexia
Thiazide diuretic examples
Hydrochlorthiazide/Apo-Hydro
Thiazide diuretic side-effects
Hypokalemia, hyperlgycemia, anorexia, malaise, muscle weakness
Guidleines for booth loop/thiazide diuretics? (K losing)
Provide potassium rich foods or supplementation (Note supplements could induce N/V - take with food)
K+ SPARING diuretics example
Spirinolactin (Aldactone), Triamterene, Amiloride
Guideline for K+ sparing diuretics?
AVOID EXCESS POTASSIUM THROUGH DIET AND SUPPLEMENTATION. Avoid salt-supplements, excess water, natural liquorice and take with food.
Should those on K+ sparing diuretics reduce consumption of dietary potassium?
No, but don’t consume in excess amounts
ACE-I example
Ramipiril/Altace
ACE-I mechanism
Inhibits conversion of Ang I –> Ang II, decreases vasoconstriction and vasopressin/aldosterone release
ACE-I side effects
Hypotension, dry cough, decreased renal function, hyperkalemia. Side effects exacerbated in African-Americans?
Ace-I guidelines
Avoid salt-substitutes and natural liquorice
When would ARB be prescribed? What it it? What effect?
When ACE-I cannot be tolerated.
Ang II blocker
Same downstream effects of ACE-I
ARB mechanism
Blocks the binding of ANG-II to receptors, decrease vasoconstriction and vasopressin/aldosterone release
Side effects of ARB
Hyperkalemia, N/V
ARB guidelines
Avoid salt-substitutes, natural liquorice, grapefruit
Long acting CCB examples
Amlodipline/Norvasc
CCB mechanism
Affect movement of Ca through channels, cause vasodilation and inhibit contraction of myoepithelium
CCB side effects
Edema, nausea, heartburn (GERD?)
CCB guidelines
AVOID IN HF, limit caffeine, avoid completely
Which CCB should grapefruit be avoided?
Felodipine/Plendil
B-blocker examples
Proponolol/Atenolol/Metoprolol
B-blocker mechanism
Block B-adrenergic recpetor in heart (epi/norepi), decrease CO and heart rate .
What are the severe side effects of B-blocker?
Can mask/mimic symptoms of hypoglycemia, dangerous for those w/ DM. Dizziness, fatigue, CHF, hallucinations, insomnia.
B-blocker guidelines
Caution with DM, avoid natural liquorice and NOT recommended as initial therapy for those over 60 y/o.