CD1 Flashcards
Target BP in patients over 80
<150/90
Target BP in patients under 80
<140/90
Target BP in diabetic patients or patients with CKD
<130/80
Drug options in emergency HTN (>180 with papilloedema)
nitroprusside, labetalol, GTN or phentolamine
Second line to statins
Ezetimibe
MOA of ezetimibe
Reduces bile secretion to minimise fat absorption
Investigation of patients with angina but low risk of coronary artery disease
CT coronary angiogram
Investigation of patients with angina and high risk of coronary artery disease
Dobutamine stress echo or coronary angiogram
MOA of ivabradine
Inhibits funny current to reduce heart rate
MOA of nicorandil
Calcium channel blocker
MOA of ransolazine
Sodium channel blocker
Management of patients with intermediate risk on GRACE score
antiplatelet and anticoagulant then non-emergency angiogram with or without stent insertion
Management of patients with low risk on GRACE score
non-invasive monitoring such as an echo or CT coronary angiography
Medication following an MI
Beta-blocker
ACE inhibitor
Statin
Anti-platelet for a year
Screening tests for complications after an MI
ECG and echo
Causes of acute AF
thyrotoxicosis, an infective exacerbation of COPD, pneumonia, alcohol (holiday heart syndrome) or an infection such as myocarditis
Causes of chronic AF
hypertension, ischaemic heart disease, dilated cardiomyopathy or idiopathic
How does “pace and ablate” therapy work?
AV node is ablated to isolate the ventricles, which are then paced with a pacemaker for rate control
When to choose chemical and electrical cardioversion in AF
Chemical if onset <48 hours ago, electrical if >48 hours ago
Medication after cardioversion
Anti-arrhythmic e.g. sotolol/flecainide
CHADSVASC cut off for anticoagulation
1 or more (unless female)
Use of BNP in diagnosis of heart failure
Guides how urgently an echo is needed
What is entresto?
a combination of sacubitril and valsartan which acts as a diuretic and ARB
Treatment for diastolic heart failure
Diuretics for symptomatic relief and specialist help
Why may patients with aortic stenosis get frequent nosebleeds and easy bruising?
The blood moving through the stiffened valve can disform von Willebrand factor, causing an acquired von Willebrand disease
Causes of chronic aortic regurgitation
hypertension, a congenital bicuspid valve, degeneration such as calcification, connective tissue disorders e.g. Marfan’s
Causes of acute aortic regurgitation
rheumatic heart disease
aortic dissection
infective endocarditis
Murmur in mitral stenosis
low-pitched rumbling diastolic murmur over the mitral area
Medication in aortic stenosis
Diuretics for symptom relief
Consider anticoagulant prophylaxis as increased risk of clots
Treatment of acute limb ischaemia
given anti-platelets (e.g. aspirin), anticoagulants (e.g. heparin) and analgesia (e.g. an opioid)
Consideration for surgery (revascularisation if limb is viable or amputation of limb isn’t viable)
Medication in mild - moderate peripheral vascular disease
Anti-platelets
Symptoms of HHS
polyuria, polydipsia, headache, nausea, vomiting and abdo pain, tachycardia, hypotension and confusion
Cancer most associated with Cushing’s
Small cell lung cancer
First line investigation in Cushing’s
24 hour urinary cortisol
Investigation of acromegaly
First line is look for raised serum IGF-1
Then oral glucose suppression test (growth hormone will remain high)
Then MRI to look for pituitary tumour
Complications of acromegaly
Diabetes
Hypertension
Cardiomyopathy
Sweating
Sleep apnoea (due to increased tongue size)
Colon cancer (screened for on diagnosis with a colonoscopy)
Reduced secretion of other pituitary hormones due to pituitary compression or visual field defects due to optic chiasm compression
Investigation of Cushing’s
First line test is usually 24-hour urinary cortisol
Midnight cortisol can be taken to show loss in circadian rhythm (it’s usually lowest at night)
Low dose dexamethasone suppression test involves giving a low dose of dexamethasone at 11pm then measuring serum cortisol at 8am and showing a lack of suppression
Once Cushing’s is confirmed and exogenous steroid use excluded, serum ACTH may be measured to see if it is ACTH dependent. The ACTH can be measured after a high-dose dexamethasone suppression test to see if the ACTH is from the pituitary gland (ACTH will fall) or an ectopic source (ACTH will stay high).
If carcinoma suspected, give CT/MRI scan
Treatment of prolactinoma
dopamine agonists (e.g. cabergoline) to reduce prolactin levels via negative feedback and shrink the tumour. If unresponsive to this, surgery may be considered
SIADH treatment
Diuretics and treatment of the cause if appropriate. In some patients tolvaptan may be used, which is a competitive inhibitor of ADH
First line investigations in Addison’s
U&Es will show hyperkalaemia and hyponatraemia (due to low aldosterone). 9 am cortisol would be measured (should be highest at this time)
How to interpret 9am cortisol in diagnosis of Addison’s
If very low, admit to hospital. If slightly low, refer for a synacthen test. If normal or high Addison’s is unlikely.
Symptoms of Addisonian crisis
dehydration, hypotension, confusion, abdominal pain, diarrhoea and vomiting, hyponatraemia and hyperkalaemia.
Treatment of Addisonian crisis
IV hydrocortisone and IV fluid resuscitation
Close monitoring of electrolytes with ECGs to look for any associated changes
Following initial resuscitation, an IV hydrocortisone and dextrose infusion is given and reduced over a few days
Frist line medication in hyperthyroidism
Carbimazole
Second line medication in hyperthyroidism
Propylthiouracil
Management of Grave’s ophthalmopathy
a combination of lifestyle changes like smoking cessation, medication such as steroids, decompressive surgery and irradiation