Pulmonary Vascular Disease COPY Flashcards
Where does thrombus normally form?
In the deep veins of the legs
What % of hospital admissions are due to pulmonary embolisms?
1%
Where do thrombus form in pulmonary embolism and where do they travel to?
Form in the venous system (usually in the legS) and embolises to the pulmonary arteries
What is an embolism?
A thrombus (clot) that is travelling in the blood
Does some or all of the thrombus break off and become an embolism?
Either can occur
What is the normal path of apulmonary embolism?
Travels up via the inferior vena cava
Enters the right atrium into the right ventricle
Then is pumped into the pulmonary artery where it lodges
Why does recent trauma and major surgery create a higher risk for pulmonary embolism?
As the clotting system will be more activated, therefore the blood has a higher risk of clotting
What are the major risk factors of pulmonary embolism?
Recent major trauma Recent surgery Cancer Pregnancy Sig. cardiopulmonary disease
What are some of the signs and symptoms of a pulmonary embolism?
Breathlessness (acute and isolate dyspnoea) Pleuritic chest pain Cough Haemoptysis Cardiac arrest (massive PE)
What scales can be used to calculate the risk of PE?
Wells score
Geneva score
What classes can PE be classified into?
Small-medium
Multiple
Massive
What investigations are done to diagnose pulmonary embolism?
Full blood count Chest X-ray ECG D-dimer CT Pulmonary Angiogram V/Q san Echocardiography consider CT abdomen and mammography
What does the mortality at 30 days vary form in pulmonary embolism?
0-25%
What is a PESI score based on?
Age
Sex
Cormobidity
Physiological parameters
What is the treatment for Pulmonary embolism?
Oxygen Warfarin (to thin blood) Direct Oral Anticoagulants Thrombolysis Pulmonary Embolectomy
What does warfarin do and why would it be used in the treatment of PE?
It thins the blood
What do thrombolysis do?
Break down clots
What is pulmonary hypertension?
Elevated blood pressure in the pulmonary arterial or tree
What is the pressure in pulmonary hypertension?
> 25mmHg
Is primary or secondary pulmonary hypertension more common?
Secondary
Who does secondary pulmonary hypertension tend to occur in?
Older age group
What are the symptoms of pulmonary hypertension?
Exertional dyspnoea Chest tightness Exertional presyncope or syncope Racing heartbeat Leg and ankle swelling
What is syncope?
Loss of consciousness
What investigations are done to diagnose pulmonary hypertension?
ECG Lung function tests Chest X-ray Echocariopgraphy V/Q scan CTPA Right heart catheterisation
What can pulmonary hypertension lead to?
Heart failure
Which part of the heart has to work harder with pulmonary hypertension?
Right hand side
What are the signs of pulmonary hypertension?
Elevated JVP Right ventricular heave Loud pulmonary second heart sound Hepatomegaly Ankle oedema
What is hepatomegaly?
Abnormal enlargement of the liver
What is the general treatment for pulmonary hypertension?
Treat underlying condition
Oxygen
Anticoagulation
Diuretics
What are the very extreme treatments for pulmonary hypertension?
Thromoendarterectomy
Lung or heart lung transplant
What does thromoendarecteromy do?
Removes the part of the vessel that is causing the obstruction
What is pulmonary hypertension?
Abnormally elevated pressure in the pulmonary circulation
What are the potential causes of pulmonary hypertension?
Certain drugs Infections COPD Heart failure Blood clots in lungs Certain diseases
What are the symptoms of deep venous thrombosis - if there are any symptoms?
Leg swelling
Redness
Oedema
What is normal pressure in the pulmonary arterial circulation?
25mmHg
What is the pressure in mild pulmonary hypertension?
25-45mmHg
What is the pressure in moderate pulmonary hypertension?
46-65mmHg
What is the pressure in severe pulmonary hypertension?
> 65mmHg
Why is trauma and recent surgery a major risk factor for pulmonary embolism?
Because the clotting system becomes more activated and this makes the blood more likely to clot
For which trimester is there the highest risk for pulmonary embolism?
The risk is the same for all 3 trimesters
What is pulmonary hypertension?
Elevated blood pressure in the pulmonary arterial or tree
What is potential sign on a CXR for pulmonary hypertension?
Enlargement of the pulmonary arteries
What are some of the specific treatment options for pulmonary hypertension?
Calcium channel antagonist
Prostacyclin
Endothelin receptor antagonist
Phosphodiesterase inhibitors
What endothelin receptor antagonists can be used to treat pulmonary hypertension?
Bosentan
Ambrisentan
What phosphodiesterase inhibitors can be used to treat pulmonary hypertension?
Sildenafil
Tadalafil
What is the last resort treatments for serious pulmonary hypertension?
Lung or heart/lung transplant