CVD- OEDEMA + VASCULAR DISEASE Flashcards
What is oedema?
Condition causing fluid buildup
When to use diuretics?
In the morning
What are 6 drug classes used to treat oedema?
- Loop diuretics
- Thiazide
- Aldosterone antagonist
- Potassium sparing
5.Osmotic
- Carbonic anhydrase inhibitor
List 3 loop diuretics?
Bumetanide
Furosemide
Torasemide
What is most potent loop diuretic?
Bumetanide
Which loop diuretic increases risk of gout?
furosemide
which loop diuretic can cause musculoskeletal pain?
Torasemide
List 6 thiazide diuretics?
Bendroflumethiazide
Hydrochlorothiazide
Chlortalidone
Indapamide
Metolazone
Xipamide
What thiazide diuretic can cause risk of skin cancer?
Hydrochlorothiazide
What thiazide diuretic is used in severe renal impairment?
Metolazone
Which thiazide diuretic has a long half life?
Chlortalidone
What is a risk of using Metolazone?
Be careful switching brands - different bioavailabilities
What thiazide diuretic has less aggravation of diabetes?
Indapamide
What is gravitational oedema?
Fluid pools in the lower parts of the body
Who does gravitational oedema occur more in?
Elderly
What to give if gravitational oedema?
Low dose diuretic (short term)
What are 2 aldosterone antagonists?
Spironolactone
Eplerenone
What is spironolactone also used in?
Liver ascites
When is eplerenone also used for?
Post acute MI
What are 2 potassium sparing diuretics?
Amloride
Triamterene
What diuretic causes blue urine?
Triamterene
What is 1 osmotic diuretic?
Mannitol
What other 2 indications is mannitol used in?
Cerebral oedema
Raised Intra-ocular pressure
Name 3 carbonic anhydrase inhibitors?
Acetazolamide
Brinzolamide
Dorzolamide
Name an oral carbonic anhydrase inhibitor?
Acetazolamide
What are carbonic anhydrase inhibitors also used for?
Glaucoma
What is MOA of diuretic?
Increase urine output by kidneys by blocking sodium reabsorption at different segments of the nephron.
What can excess diuresis cause?
HypOtension
HypOvolemia
What to do with diuretic on sick days?
STOP meds
What is MOA of loop diuretic?
Blocks the Na+/K+/CL- co-transporter on ascending limb of lop of henle
What is onset of loop diuretics?
act in 1 hr of administration
Which cases do we need to separate the doses of loop diuretics from other drug? (ALOUD)
Amino-glycosides- separate both
Low Na+/K+/CL-/Mg2+/Ca2+
Ototoxicity
Urinary retention
Diabetes + gout (increases this)
What is 2 indications of loop diuretics?
Heart failure
Resistant hypertension
What is a caution of loop diuretics?
Exacerbates diabetes(less likely compared to thiazides) + gout
What are 2 SE of loop diuretics?
Ototoxicity
Acute urinary retention
What class drug does loop diuretics interact with to increase ototoxicity?
Aminoglycosides e.g. gentamicin
How to overcome ototoxicity between loop diuretics + aminoglycosides?
Separate doses by long period
What is an MOA of thiazides?
Blocks Na+/CL- transporter on proximal distal convouted tubule.
What is onset of thiazides?
1-2 hrs
What is duration of thiazides?
12-14 hrs
What are 2 indications of Thiazide diuretics?
HF
Hypertension
Can thiazides be used in renal impairment?
Ineffective if severe
Except metolazone
What is the ONLY diuretic that can be used in RI?
Metolazone
What is a caution of thiazide diuretics?
exacerbates diabetes + gout
What are 4 side effects of thiazide diuretics? (SIGH)
Skin reactions
Impotences
GI disturbances
High LDL cholesterol
What is an MHRA warning regarding thiazide diuretics?
Risk of non-melanoma skin cancer in long term use of hydrochlorothiazide
What is the thiazide drug with skin cancer MHRA warning?
hydrochlorothiazide
How to counsel patient taking hydrochlorothiazide on MHRA warning on skin cancer risk?
Report new/ changed skin lesions.
Regular checks- limit sun + UV exposure.
Use enough sun protection
What drug interacts with loop + thiazide diuretics to cause hypOkalaemia?
Digoxin = toxicity
What happens when digoxin + loop/thiazide diuretics taken?
Increase risk of hypOkalaemia
What drug causes hypOnatraemia with loop/ thiazide diuretics?
Lithium
What 8 drug classes interact with loop/ thiazide diuretic to cause hypotension?
Anti-hypertensives
Anti-depressants
Anti-parkinson drug
Antipsychotics
Other diuretics
Nitrates
Phosphodiesterase type 5 inhibitors
SGL-2 inhibitors
What diabetic drug can cause hypotension when given with diuretics?
SGL-2 inhibitors E.G. CANAGLIFLOZIN
What drug can cause AKI with thiazides?
NSAIDS
What is MOA of K+ sparing diuretics?
Keeps K+
Blocks Sodium channels in late distal convoluted tubule to collecting duct.
What is indication of K+ sparing diuretics?
Potassium conservation with loop/ thiazides
Why is K+ sparing diuretics used?
Preferred over supplements
What is 2 big SE of K+ sparing diuretics?
HypERkalaemia
HypOnatraemia
What K+ sparing diuretics causes blue urine?
Triameterene
What is an interaction of K+ sparing diuretics?
Increase risk of HypERkalaemia
What 6 drug classes increase K+ risk?
ACEi/ ARB
Aldosterone antagonist
Heparin
NSAID
potassium supplement
Trimethoprim
What is MOA of aldosterone antagonist?
Blocks aldosterone
Acts on Na+ channels from late convoluted tubule to collecting duct.
What is indication of aldosterone antagonist?
Adjunct HF
Resistant HTN, Liver ascites
What specific aldosterone antagonist is used for liver ascites?
Spironolactone
What are 2 big SE of aldosterone antagonists?
HypERkalaemia
HypOnataemia
What 3 hormonal SE is associated with Aldosterone antagonist use?
Gynaecomastia
Libido changes
Menstrual disturbances
What 2 SE is linked to spironolactone use?
Benign breast tumours, hypertrichosis.
What 5 drug classes increase hyperkalaemia with aldosterone antagonists?
ACEi/ARB, K+, NSAID, trimethoprim
What is vascular disease?
Peripheral vascular disease is either occlusive or vasospastic
2 categories of vascular disease?
Occlusive
Vasospastic
What is the 1st line drug treatment of peripheral arterial disease?
If exercise does not work.
Naftidrofuryl
What is 2nd line drug treatment of peripheral arterial disease?
cilostazol OR pentoxifylline.
What is cilostazol used for?
intermittent claudication (calf pain)
What 2 drugs are used as secondary prevention of PAD?
High intensity statin
Low dose asprin
What is treatment if patient is vasospastic e.g. raynauds syndrome?
Nifedipine
What are 2 lifestyle things to stop PAD?
Stop smoking
Avoid cold + stress
What is occlusive PAD?
blockage of peripheral arteries is caused by atherosclerosis
What is Vasospastic PAD?
small blood vessels near the surface of the skin have spasms that limit blood flow
What condition is an example of Vasospastic PAD?
Raynaud’s syndrome
What 3 drugs are licensed in management of Raynaud’s syndrome?
Naftidrofuryl + prazosin
Nifedipine - prophylaxis
List 3 thiazide like diuretics?
Chlortalidone
Indapamide
Metolazone
When to give thiazide diuretics in the day?
Given early to prevent sleep disturbances- lasts 24 hrs
MOA of loop diuretics?
Inhibit reabsorption from ascending loop of henle.
Indication of loop diuretics?
pulmonary oedema due to left ventricular failure + Chronic HF
Loop diuretic duration of action?
lasts 6 hrs -= given 2 times day
What diuretic class to stop if person dehydrated due to vomiting + diarrhoea?
Aldosterone antagonists
What 2 electrolyte imbalances do all diuretics cause?
Hyponatremia
hypomagnesia
What condition does loop diuretics increase?
gout
spironolactone + lithium?
increases lithium toxicity
What 2 things does loop diuretics + aminoglycosides cause?
nephrotoxicity
ototoxicity