Cardiovascular Flashcards

1
Q

How common is MI/ACS and who does it affect?

A

5/1000 per year

More common in males

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2
Q

What are the causes of MI/ACS?

A
  • A rupture to fibrous cap of a coronary artery plaque
  • Leads to platelet aggregation and adhesion, thrombosis, vasoconstriction and distal thrombus embolisation
  • Results in ischaemia due to reduction in coronary bloodflow
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3
Q

What are the risk factors for MI/ACS?

A
Age
Gender
Family history
Smoking
Hypertension 
Diabetes
Obesity
Hyperlipidaemia
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4
Q

What are the symptoms of MI/ACS?

A
Acute central chest pain (>20 mins)
Nausea
Sweatiness
Dyspnoea
Palpitations
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5
Q

What are the signs of MI/ACS on examination?

A
Distress
Anxiety
Pallor
Sweatiness
⬆️ pulse/⬇️ pulse
BP ⬆️/⬇️ 
Signs of heart failure
4th heart sound
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6
Q

What are the possible differential diagnoses of MI/ACS?

A
Angina
Pericarditis
Myocarditis
Aortic dissection
PE
Oesophageal reflux
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7
Q

What investigations are necessary to diagnose MI/ACS?

A

ECG
CXR
Bloods (FBC, U&Es, glucose, lipids)
Cardiac Enzymes (⬆️ Troponin, ⬆️ Creatine Kinase)

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8
Q

What are the treatments of MI/ACS?

A
Anti-platelet agents
- aspirin
- Clopidogrel
Anti-thrombins
Anti-ischaemia agents
Coronary intervention
- Stenting
- Bypass
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9
Q

How common is Angina and who does it affect?

A

Men over 70 with atypical symptoms >90%

Women older than 70, 61-90%

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10
Q

What are the causes of angina?

A
Mostly atheroma
Anaemia
Tachyarryhthmias
Arteritis
Small vessel disease
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11
Q

What are the risk factors for angina?

A
Hypertension
Hypercholesterolaemia
Smoking
Type 2 diabetes
Age
Family History
Overweight
Stress
Gender
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12
Q

What are the symptoms of angina?

A
acute central chest pain associated with;
Nausea and vomiting
Sweatiness
Dyspnoea
Palpitations
Syncope
Pulmonary oedema
Epigastric pain
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13
Q

What are the signs of angina on examination?

A
Distress
Anxiety
Pallor
Sweatiness
⬆️/⬇️ in pulse
⬆️/⬇️ in BP 
4th heart sound
Signs of heart failure
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14
Q

What are the possible differential diagnosis of angina?

A
Angina
Pericarditis
Myocarditis
Aortic dissection
PE
Oesophageal reflux/spasm
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15
Q

What investigations are necessary to diagnose angina?

A

ECG (ST elevation, T wave inversion)
Bloods - FBC, U&Es, glucose and lipids
Cardiac enzymes - cardiac Troponin, Creatine kinase, myoglobin

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16
Q

What are the treatments for angina?

A
GTN spray
Beta blockers
Calcium channel blockers
Treating risk factors
Surgery
- coronary artery bypass graft
- percutaneous coronary intervention (coronary angioplasty)
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17
Q

How common is AF and who does it affect?

A

500,000 people in UK
More common as age ⬆️

More common in men
10% of people over 75

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18
Q

What causes AF?

A

Caused by atrial fibrosis and loss of atrial muscle mass
Fibrosis occurs as a result of ageing, inflammatory processes, genetic causes

  • High blood pressure
  • thyrotoxicosis
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19
Q

What are the risk factors for AF?

A
Age
Heart disease
Hypertension
Family history
Hyperthyroidism
Alcohol consumption
Obesity
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20
Q

What are the symptoms of AF?

A
Asymptomatic
Chest pain
Palpitations
Dyspnoea
Faintness
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21
Q

What are the signs of AF on examination?

A

Irregularly irregular pulse
Apical pulse rate greater than radial
1st heart sound of variable intensity
Signs of LVF

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22
Q

What are the possible differential diagnoses of AF?

A

Atrial flutter
Atrial extrasystoles
Supra ventricular tachyarrhythmias
Ventricular tachycardia

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23
Q

What investigations are necessary to diagnose AF?

A

ECG (absent P waves and irregular QRS complexes)
Bloods- U&Es, cardiac enzymes, TFTs, FBC
Echocardiogram
CXR to indicate cardiac structural causes of AF

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24
Q

What are the treatments for AF?

A

Rate control:
- Beta blocker (not calcium channel blockers due to bradycardia risk)
- digoxin
Rhythm control:
- pretreat for >4 weeks with sotalol or Amiodarone
- flecanide

Anticoagulation

  • warfarin
  • aspirin
  • Dabigatran- direct thrombin inhibitor
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25
How common is essential hypertension and who does it affect?
20-30% of population - 80-90% is essential/primary hypertension Affects of 40-45% of black African adults
26
What causes essential hypertension?
``` Genetic component Low birth weight Obesity Excess alcohol intake High salt intake Metabolic syndrome ```
27
What are the risk factors for essential hypertension?
Family history Personal history Age
28
What are the symptoms of essential hypertension?
Generally Asymptomatic In extremes: - headaches - fatigue/confusion - dizziness - nausea - vision problems - chest pains
29
What are the signs of essential hypertension on examination?
High blood pressure End organ signs: - loud second heard sound - left ventricular heave - fourth heart sound - retinal abnormalities
30
What are the possible differential diagnoses of essential hypertension?
Secondary hypertension Anaemia Malignant hypertension
31
What investigations are required to diagnose essential hypertension?
Need to exclude any end organ damage - U&Es, and renal ultrasound - urine dip - blood glucose - serum lipids - ECG
32
What are the treatments of essential hypertension?
``` Lifestyle modification Drug therapy - Diuretics (loop&thiazide) - beta blockers - ACE inhibitors - Angiotensin 2 receptor blockers - calcium channel blockers ```
32
How common is DVT and who does it affect?
1/1000 people on UK develop DVT per year More common as you get older >60yrs More common in males
33
What are the causes of DVT?
Thrombosis in the deep veins of the of the limbs/trunk, mainly in leg/pelvis Usually originates from valves where thrombin made up of RBC and fibrin detach Cause associated with risk factors
34
What are the risk factors for DVT?
``` Age >60 years Severe medical co-morbidities Obesity Major abdo/pelvic surgery Pregnancy Immobility- surgery, illness/injury, travel Vessel luminal damage - varicose veins Oestrogen contraceptive pill, HRT - oestrogen causes blood to clot more easily Family/personal history ```
35
What are the symptoms of a DVT?
Often Asymptomatic | pain/tenderness
36
What are the signs of DVT on examination?
Swollen leg Warm leg Calf tenderness Superficial vein distension
37
What are the possible differential diagnoses of a DVT?
``` Ruptured Bakers cyst Oedema from surrounding msk injuries Cellulitis Chronic oedema Haematoma Superficial thrombophlebitis ```
38
What investigations are necessary to diagnose a DVT?
Serum D-dimer (good to rule out DVT but not confirm) - high levels of D-dimer (+ve result) indicates further investigation and high probability a DVT is present - normal levels of D-dimer (-ve result) confirm no DVT is present Ultrasound
39
What are the treatments of a DVT?
- LMW heparin by subcutaneous injection every 24hrs for 5 days till oral Anticoagulation established - Warfarin for rapid Anticoagulation in VTE - maintenance dose warfarin
40
How common is left ventricular failure and who does it affect?
1-3 of every 100 people will develop LVF Prevalence increases with age
41
What are the causes of Left Ventricular Failure?
``` Myocardial ischaemia Hypertension Aortic stenosis/incompetence Mitral incompetence MI Hypothyroidism ```
42
What are the risk factors for left ventricular failure?
``` Hypertension Previous MI Congenital heart defects Diabetes Excessive alcohol use Irregular heart beat ```
43
What are the symptoms of left ventricular failure?
Dominated by PULMONARY OEDEMA ``` Tachypnoea Cough Frothy/bloody mucus Cyanosis Dyspnoea on exertion and at rest Orthopnoea Paroxysmal nocturnal dyspnoea Fatigue, Weakness Exercise intolerance Wheezing ```
44
What are the signs of left ventricular failure on examination?
``` Crackles on lung bases Laterally displaced apex beat Galloping rhythm Increased BP/intra-cardiac pressure Heart murmur (aortic stenosis, mitral regurgitation) ```
45
What are the differential diagnoses of left ventricular failure?
PE Lung cancer Upper airway obstruction
46
What investigations are necessary to diagnose left ventricular failure?
``` CXR Coronary angiography ECG Heart stress test Cardiac Ultrasound ```
47
How do you treat left ventricular failure?
Diuretics
48
What is congestive cardiac failure?
Complex clinical syndrome resulting from structural or functional cardiac disorder that impairs the ability of the ventricles to fill or eject blood Affects the ventricles
49
How common is CCF?
Affects around 900,000 people in UK
50
What causes CCF?
``` Coronary artery disease MI Myocardial disease Heart valve disease Hyperthyroidism Hypertension ```
51
What are the symptoms of CCF?
``` Dyspnoea Cardiac asthma Cough Frothy bloody sputum Orthopnoea Paroxysmal nocturnal dyspnoea Peripheral oedema ```
52
What are the signs of CCF on examination?
Cyanosis | Pulmonary oedema
53
What are the treatments for CCF?
``` Diuretics ACEi Beta blockers Spironolactone Digoxin Vasodilators ```
54
When does mitral stenosis become symptomatic?
When the lumen is reduced to 1cm or less
55
What causes mitral stenosis?
Long suffering rheumatic fever
56
How does rheumatic fever cause mitral stenosis?
Rheumatic fever results in inflammation of all layers of the heart-pericardium, myocardium and endocardium Causes pathological scarring of valve cusps and shortening and tightening of chordae tendinae
57
What does mitral stenosis cause?
Causes poor emptying of the atrium - increasing pulmonary venous pressure - pulmonary hypertension - right ventricular Hypertrophy, dilation and failure
58
What is the most common cause of mitral regurgitation?
Ischaemic Heart disease
59
What is mitral prolapse?
Myxoid degeneration of cusps and chordae tendinae causing cusps to balloon into the atrium and chordae tendinae may rupture
60
What are the symptoms of aortic stenosis?
Syncope Angina Left Ventricular failure
61
What can cause aortic regurgitation?
Infective endocarditis | Aortic root dilation
62
What are the signs and symptoms of Aortic regurgitation?
Systolic hypertension Wide pulse pressure Water hammer pulse
63
What is right ventricular failure?
Failure of the ventricle to eject blood out of the ventricle to the lungs Usually occurs as a result of left sided heart failure causing increased pressure through the lungs and to the right ventricle Blood flow to the pulmonary arteries falls as blood begins to accumulate in the right ventricle, left atrium and systemic circulation
64
What are the signs and symptoms of right ventricular failure?
Elevation of systemic venous pressure - JVP Ascites & jaundice (liver and spleen congestion) Peripheral pitting oedema Parasternal heave (compensatory increase in contraction strength) Nocturia - fluid retained in limbs re enter systemic circulation
65
What is infective endocarditis?
Endovascular infection of cardiovascular structures including cardiac valves, atrial and ventricular endocardium large intrathoracic vessels and intracardiac foreign bodies (prosthetic valves)
66
What is the pathology of infective endocarditis?
Vegetation which occur on valve leaflets and chordae tendinae Vegetation a consist of fibrin, inflammatory cells and microbes on the endocardium
67
What is the microbiology of infective endocarditis?
Acute: staph aureus | Sub-acute: strep viridans
68
What are the signs of infective endocarditis?
Septic signs Cardiac lesions (new murmur, changing murmur) Immune complex deposition: - Vasculitis - Roth spots, splinter haemorrhages, oslers nodes Embolic phenomena