Cardiovascular Diseases 3 Flashcards
(99 cards)
1
Q
Inflammation of the endocardium of the heart ‘vegetations on valves’
A
Endocarditis
2
Q
2 main types of endocarditis
A
Infective
Non-infective
3
Q
Describe the vegetations of infective endocarditis
A
mixture of thrombotic debris and organisms
destroy underlying cardiac tissue
4
Q
What are the 2 types of infective endocarditis?
A
Acute and subacute
5
Q
Which is caused by more virulent organisms, subacute or acute infective endocarditis?
A
Acute
6
Q
Describe the vegetations of acute infective endocarditis
A
Friable, bulky, potentially destructive vegetations. Ring abscess
7
Q
Which is more easily treatable with antibiotics; acute or subacute endocarditis?
A
Sub-acute
8
Q
Risk factors for infective endocarditis
A
Cardiac/valvular abnormalities MV prolapse Valvular stenosis Artificial valves Unrepaired congenital defects Bicuspid AV
9
Q
Causative organisms of infective endocaridits
A
Streptococcus viridans
Staph A.
Coagulase -ve staphylococci
10
Q
Which organisms can cause endocarditis, from prosthetic heart valves
A
Coagulase -ve staphylococci
11
Q
Which organims can cause infective endocarditis from the mouth?
A
Streptococcus viridans
12
Q
Clinical features of IE
A
Fever Murmurs Splinter haemorrhages Janeway lesions Oslers's nodes Roth Spots
13
Q
Erythematous or haemorrhagic non tender lesions on the palms or soles
A
Janeway lesions
14
Q
Subcutaneous nodules in the pulp of the digits
A
Osler’s nodes
15
Q
Retinal haemorrhages in the eyes
A
Roth spots
16
Q
Complications of IE
A
Immunologically mediated conditions e.g. glomerulonephritis
17
Q
2 types of non infective endocarditis
A
Non bacterial thrombotic endocarditis (NBTE)
Libman Sacks endocarditis
18
Q
In which patients do you get NBTE
A
cancer or sepsis.
a hypercoagulable state (DVT, PE and mucinous adenocarcinomas)
indwelling catheter lines
19
Q
NBTE is part of what syndrome?
A
Trousseau syndrome of migratory thrombophlebitis
20
Q
Describe the vegetations if NBTE
A
Small, sterile thrombi on valve leaflets. Single or multiple on line of closure of leaflets or cusps.
21
Q
What are the effects of NBTE
A
non invasive/no inflammatory reaction>minimal local effect
Systemic emboli infarcts in the brain, heart etc
22
Q
What type of endocarditis is associated with SLE
A
Libman Sacks
23
Q
What valves are affected in libman sacks endocarditis?
A
Mitral and tricuspid valves
24
Q
What are the effects of libman sacks endocarditis?
A
Usually asymptomatic, rarely cardiac failure or systemic emboli
25
Describe the vegetations of libman sacks endocarditis
Small (1-4mm), sterile, pink warty vegetations. Single or multiple
26
Rheumatic fever is an acute, immunologically mediated, multi-system inflammatory disease following what infection?
Group A steptococcal pharyngitis- causes scarlet's fever
27
What are the distinctive cardiac lesions, made up of T-cells, plasma cells and macrophages found in rheumatic fever?
Aschoff bodies
28
What are the vegetations called in rheumatic fever?
Venuccae
29
Pathological features of rheumatic fever
Vegtations (venuccae)
Mitral valve changes
Fish mouth or buttonhole stenoses- fibrous bridging of valvular commissures and calcification
30
Causes of rheumatic fever
Hypersensitivity reaction
| Immune responses to group A strep (pharyngitis)
31
What criteria is used to diagnose rheumatic fever?
Jone's criteria
32
Clinical features of rheumatic fever
```
Carditis
polyarthritis
chorea (neurological condition causing jerky movements)
erythema margination
subcutaneous nodules
fever
arthralgia
```
33
Inflammation fo the pericardial sac
Pericarditis
34
Causes of pericarditis
Infections e.g. viruses (cocksackie B), bacteria, fungi etc
| Immunologically mediated processes- rheumatic fever, SLE, scleroderma, post MI (Dressler's)
35
5 Types of acute pericarditis
```
Serous
Serofibrinous/fibrinous
Purulent/suppurative
Haemorrhagic
Caseous
```
36
3 types of chronic pericarditis
Adhesive
Adhesive mediastinopericarditis
Constricive pericarditis
37
A type of pericarditis involving inflammation which causes serous fluid accumulations
Serous pericarditis
38
Causes of serous pericarditis
Inflammation in adjacent structures
Viral pericarditis (cocksackie B/echinovirus)
Immunologically mediated processes- rheumatic fever, SLE, scleroderma
Misc. conditions- uraemia, neoplasia, radiation
39
Most common form of pericaridits
Serofibrinous pericarditis
40
A type of pericarditis; serous fluid and/or fibrinous exudate in pericardiat sac
Serofibrinous pericarditis
41
Common causes of serofibrinous pericarditis
Acute MI, Dressler's syndrome
| Uraemia, radiation, rheumatic fever, SLE, trauma, surgery
42
Features of serofibrinous pericarditis
Dry, granular, roughened surface
43
Causes of purulent/suppurative pericarditis
Infections
44
Features of purulent/suppurative pericardiits
Red, granular, exudate i.e. pus
45
Complications of purulent/suppurative pericarditis (rare)
Mediastino-pericarditis
| Restrictive pericarditis- serious
46
A type of pericarditis where blood is mixed with serous (water) or suppurative (pus) effusion
Haemorrhagic pericarditis
47
Causes of haemorrhagic pericarditis
Neoplasia
Infections e.g. TB
Following cardiac surgery - cardiac tamponade
48
Causes of caseous pericarditis
TB or fungal
49
Type of pericarditis with fibrinous/stringy adhesions obliterating pericardial cavity
Adhesive pericarditis
50
Type of pericarditis which obliterates pericardial cavity with adherence to surrounding structures. Causes cardiac hypertrophy/dilation
Adhesive mediastinopericarditis
51
A type of pericarditis where the heart is encased in a fibrous scar- limit cardiac function and only treatment is surgery
Constrictive pericarditis
52
Dressler's syndrome occurs post MI and is clinical triad of what 3 features?
Fever
Pleuritic chest pain
Pericardial effusion
53
Autoimmune reaction to antigens released following MI
Dressler's syndrome
54
3 clinical features of pericarditis
Sharp,central chest pain
Pericardial friction rub
Fever, leucocytosis, lymphocytosis, pericardial effusion
55
How is chest pain in pericarditis relieved?
Sitting forwards
56
Chest pain in pericarditis radiates where?
Shoulders/neck
57
Complications of pericarditis?
Cardiac tamponade/pericardial effusion
58
Disorders of the myocardium
Cardiomyopathies
59
4 types of cardiomyopathies
Dilated
Hypertrophic
Restrictive
Arrythmogenic right ventricular cardiomyopathy
60
Describe the features of the heart in dilated cardiomyopahty
Flabby- heart enlarged and heavy
| Myocyte hypertrophy with fibrosis
61
Causes of dilated cardiomyopahty
Genetic- AD mainly, affects cytoskeleton proteins
Alcohol and other toxins e.g. chemotherapy
Others-SLE, scleroderma, thiamine def, acromegaly, thyrotoxicosis, diabetes etc
62
Clinical features of cardiomyopathy
Present in 20s-50s with
Shortness of breath
Fatigue
Poor exertional capacity
63
Treatment for dilated cardiomyopathy
Cardiac transplantation
| Long term ventricular assist
64
Most common cause of sudden death in athletes
Hypertrophic cardiomyopathy
65
Type of cardiomyopathy- poorly compliant mycocardium, 'stiff' LV
Hypertrophic cardiomyopahty
66
In hypertrophic cardiomyopathy, is diasolic or systolic function abnormal?
Diastolic, systolic function is preserved
67
Causes of hypertrophic cardiomyopathy
100% genetic. Mutations in sarcomeric proteins- myofibre disarray
68
3 clinical features of hypertrophic cardiomyopathy
Decreased stroke volume- impaired diastolic filling
Obstruction to left ventricular outflow
Systolic ejection murmur
69
4 Complications of DCM/HCM
Heart failure
Sudden death
Atrial fibrillation
Stroke
70
Treatment for HCM
Decrease heart rate and contractility- beta adrenergic blockers
71
Causes of restrictive cardiomyopahty
Primary decrease in ventricular complicance (impared function during diastole)
Secondary (infiltration)- fibrosis, amyloidosis, sarcoidosis, metastatic tumours or deposition of metabolites
72
Genetic disease that results in RV dilation and myocardial thinning- fibrofatty replacement of RV
Arrythmogenic RB cardiomyopathy
73
When do you get sudden cardiac death with arrythmogenic right ventricular cardiomyopathy?
Fibrofatty replacement of RB due to disorder of cell-cell desmosomes. With excercise, cells detach and die.
74
Infective or inflammatory process resulting in myocardial injury
Myocarditis
75
Clinical features of myocarditis
Asymptomatic
Heart failure, arrythmias and sudden death
Non-specific symptoms
Can mimic acute MI
76
Infectious causes of myocarditis
```
Viruses (cocksackie A&B, influenza, HIV, CMV)
Bacteria
Fungi
Protozoe-tryponosoma cruzi
Helminths
```
77
Immune mediated causes of myocarditis
```
Post viral
post streptococcal (RF)
SLE
Drugs
Transplant rejection
```
78
Other causes of myocarditis
Sarcoidosis
| Giant cell myocarditis
79
Inflammation of vessel walls, any organ, any vessel size
Vasculitis
80
The name of the nomenclature for vasculitis, based on affected vessel size
Chapel Hill
81
Most common form of vasculitis (medial emergency)
Giant cell arteritis
82
Describe the pathology of giant cell arterieis
Chronic granulomatous inflammation- large>medium sized arteries
Segmental disease
83
Common arteries affected by GCA?
Temporal arteries
| Opthalmic arteris- permanent blindness
84
Symptoms of GCA
Vague symptoms e.g. fatigue, weith loss, facial pain or headache- painful to palpate superficial temporal artery, jaw claudication
85
Treatment for GCA
Corticosteroids
| Anti-TNF
86
Localised, permanent, abnormal dilatations of a blood vessel
Aneurysms
87
Name 7 aneuryms based on their aetiology
```
Atherosclerotic
Dissecting
Berry
Microaneurysm
Syphilitis
Mycotic
False
```
88
Name 2 aneurysms based on shape
Saccular
| Fusiform
89
Most common aneurysm
Atherosclerotic
90
Type of aneurysm- tear in the wall, blood tracks between intimal and medial layers
Dissecting aneurysm
91
Symptoms of a dissecting aneurysm
Tearing pain in chest radiating to upper left shoulder, usually thoracic aorta, secondary to systemic hypertension.
92
Type of aneurysm- small,saccular lesions that develop in the circle of willis. Develop at sites of medial weakness at arterial bifurcations.
Berry aneurysms
93
Ruptures of berry aneurysm can have what effect?
Subarachnoid haemorrhage
94
Charcot-Bouchard and Retinal are what type of aneuryms
Micro and syphilitis
95
A type of micro and syphility aneurysm that occurs in intracerebral capillaries in hypertensive disease, can cause strokes
Charcot-Bouchard aneurysms
96
A type of rare aneurysm- weakening of arterial wall secondary to bacterial infection e.g. subaute bacterial endocarditis. Often in cerebal arteries
Mycotic aneurysm
97
A type of aneurysm; blood filled space around a vessel, usually following traumatic fupture or perforating injury
False
98
Where is the haematoma in false aneurysms?
In the adventitial fibrous tissue
99
What are the 6ps of acute ischaemia
```
Pale
Puseless
Painful
Perishingly cold
Parasthtic
Paralysed
```
