Hypertension Flashcards
What is considered optimal blood pressure?
<120/75mmHg
What is considered normal blood pressure?
120-129/75-84mmHg
What is considered high normal blood pressure?
130-139/85-89mmHg
What is considered mildly high blood pressure?
140-159/90-99mmHg
What is considered moderately high blood pressure?
160-179/100-109mmHg
What is considered severely high blood pressure?
> 180/110mmHg
What is the definition of hypertension?
BP of >140/90 without an identifiable cause
What are the possible causes of hypertension?
Disturbance of auto-regulation Excess sodium intake Renal sodium retention Dysregulation of RAAS with high Renin activity in plasma Increased sympathetic drive Increased peripheral resistance Endothelial dysfunction Cell membrean transporter perturbations Insulin resistance/hyperinsulinaemia
What is involved in the pathophysiology of hypertension?
Structural changes, remodelling and hypertrophy in resistance arterioles
Small vessel atherosclerosis
What are the recommended lifestyle modifications in hypertension?
Dietary
Smoking cessation
Increased activity
Reduced alcohol
When should people be screened for hypertension?
Every 2 years
If high normal BP then every year
What are the common diagnostic factors in hypertension?
Presence of risk factors
BP >140/90
Retinopathy
What are the uncommon diagnostic factors in hypertension?
Headache Visual changes Dyspnoea Chest pain Sensory/motor deficit
What are the strong risk factors for hypertension?
Obesity <3days/week aerobic exercise Mod-high alcohol intake Metabolic syndrome DM Black Age >60 FH HTN/CAD Sleep apnoea
What are the weak risk factors for hypertension?
Sodium intake >2.4g/day
Low fruit and veg intake
Dyslipidaemia
What are the investigations recommended for hypertension?
ECG
Fasting metabolic panel with eGFR
Fasting lipid panel
Urinalysis
What other investigations may be considered in hypertension?
Hb Plasma renin Plasma aldosterone Renal duplex USS 24-h urine phaeochromocytoma screen 24-h urine free cortisol TSH Sleep study
What is the DDx of hypertension?
Drug-induced CKD Aortic coartation Renal artery stenosis Obstructive sleep apnoea Hyperaldosteronism Hypothyroidism Hyperthyroidism Hyperparathyroidism Cushings syndrome Phaeochromocytoma Acromegaly Collagen vascular disease Gestatonal HTN