Miscellaneous Flashcards
(31 cards)
what causes AAAs
atherosclerosis
what is a haemopericardium caused by
aortic dissection blood tracks back into pericardial cavity. fatal.
strongest risk factor for dissection
hypertension
treatment of dissection
REDUCE BP!!! then surgery
what does ACE do
converts angiotensin 1 to 2
AEs of CCBs
flush
headache
oedema
palpitations
types of CCBs
- Dihydropyridines e.g. amlodipine. relax smooth muscle, vasodilation
- Phenylaslkylamines e.g. verapamil. negative chrono and inotrope (HR and force)
- Nezothiazepines diltiazem. both above effects.
ecg finding in atrial flutter
saw tooth baseline (atrial depolarisation) ~ 300/min + regular QRS
what complexes are positive if there is no axis deviation
leads I and II
effects of HTN
IHD HF LVH renal failure stroke PVD AF
pleural effusion in HF a transudate or exudate
transudate
signs of shock
pale, cold, sweaty weak, fast pulse reduced pulse pressure confusion, weakness collapse coma thirst (angiotensin 2 formation) reduced urine output (reduced gfr)
what is unstable angina
no raised troponin
cardiac chest pain at rest
cardiac chest pain crescendo pattern
new onset angina (<24 h)
what two HTN drugs are teratogenic
ACEi and ARBs
types of CCBs and where they work
dihydropyridines e.g. amlodipine. mainly act on vascular smooth muscle
phenylaslkylamines e.g. verapamil. mainly act on heart
nezothiaepines e..g diltiazem. work on both heart and vascular smooth muscle
what effects to the heart CCBs have on the heart
negative chronotropic (rate) and negative inotropic (force)
SEs of CCBs
peripheral vasodilation (e.g. amlodipine): flush, headache, oedema, palpitations
negative chronotropic (e.g. verapamil, diltiazem): bradycardia, atrioventricular blcok
negative inotrope (verapamil): worsening heart failure
mode of action of beta blockers
negative inotrope and chronotrope
side effects of beta blockers
- Fatigue
- Headache
- Cold peripheries
- Erectile dysfunction
- Bradycardia
- Hypotension
CIs of BBs
asthma/COPD
PVD (IC or raynaud’s)
where do loop diuretics work
thick ascending limb loop of henle.
act on NaKCl symporter
inhibit reabsorption of all 3 elements
why is spirinolactone potassium sparing
no K+ excretion
where does thiazide work and is it potassium sparing
distal convoluted tubule
not potassium sparing
adverse effects
hypovolaemia
hypotension
hypokalaemia (except sprinolactone)