Pericardial diseases Flashcards
Label the image
What are the three layers of the pericardium?
- Fibrous Pericardium
- Serous Parietal Pericardium
- Serous Visceral Pericardium
What is the pericardial/ epicardial fat?
Layer of fat anterior of the heart
What does the Pericardial/ epicardial fat do? What does it mimic? What does it look like on U/S?
- Protects heart from blunt force trauma
- May mimic pericardial effusion
- Echogenic
Pericardial cysts are usually what kind of finding?
Incidental
Where are percardial cysts found?
Adjacent to the RT heart
Pericardial cysts are better evaluated with what modality?
On CT/MR
What is a pericardial effusion?
Increased amount of fluid within the pericardial space
What is pericardial effusion usually caused by?
Irritation/ injury to pericardium
What is Tamponade?
Marked or fast increased in fluid accumulation
What does tamponade cause in terms of pressure?
Significant increase in intrapericardial pressure above intracardiac pressure, this compresses the heart and impairs its ability to fill
What is pericarditis?
Inflammation of the pericardial surfaces
What does pericarditis restrict?
Diastolic function
What are signs and symptoms of pericardial effusions? 3
- Chest pain (hurts more when patients lie flat)
- SOB/ Dyspnea
- Possible Tamponade/ constrictive pericarditis S/S
What does pericardial effusions look like on ECG?2
- Low voltage ECG (suggest large effusion)
- Electrical alternans
What is electrical alternans caused by?
Swinging heart
What does pericardial effusions look like on X-ray?
Enlarged cardiac silhouette or CXR
What is the role of echo with Pericardial effusion? 6
- Spatial orientation
- Potential collapse of cardiac chambers
- Differentiation of pleural fluid
- Size of effusion
- Clear space or echoes within fluids
- Pericardial thickness
What are two ways to describe Pericardial effusion?
- Location
- Chamber collapse
How do we see circumferential pericardial effusions? 3
- Use SAX to see all around the heart
- Fluids tend to be dependent (posteriorly at first)
- Fluid will extend to the AV groove, Anterior to DA
What does Loculated pericardial effusions look like?
May have separate areas of effusions separated by adhesions
In terms of loculated pericardial effusions, microbubbles are used to show what?
Localized high interpericardial pressure
What does pericardial effusions look like? 4 (where is it located)
- Anterior to descending aorta
- May sit anterior or posterior to the heart and can be circumferential
- Tapers at AV sulcus
- No respiratory change in size
What does Pleural effusions look like? 4
- Only posterior to heart
- Posterior to descending aorta
- Changes with respiration
- Does not cause RV or RA collapse
Label the image
What are the classification of pericardial effusions? 4
- Physiologic
- Mild
- Moderate
- Large
Are Trace effusions Normal or Abnormal?
Normal
What does this image identify?
Notice the difference in size between systole/ diastole on the M-mode trace
Where does pericardial effusions occur in M mode?
An anechoic space between epicardium and pericardium
When would we measure pericardial effusions?
Diastole
What does pericardial effusions look like on M-mode?
Posterior wall lifts off the pericardial boarder in Systole as PW contracts (PLAX/PSAX)
Measuring Pericardial effusions when leads to over estimates?
During systole
In terms of pericardial effusions long standing effusions may have what?
Fibrinous strands that can be seen by echo
What does this image demonstrate?
Pericardial effusion
What does this image demonstrate?
Pericardial effusion
What does this image demonstrate?
Thin vs thick pericardium
What do we use doppler for in terms of pericardial effusions?2
- Diastolic function assessment
- Changes in LV and RV filling with respiration
In terms of looking at diastolic function assessment for Pericardial effusions what do we look at?
Impact of PE on LV and RV filling
What are some things we consider when looking at changes in LV and RV filling with Respiration? 3
- Using MV and TV inflow profiles
- Constrictive pericarditis vs restrictive cardiomyopathy
- Tamponade VS constrictive pericarditis
What are some imaging considerations with PE?
2D errors
What are some 2D errors we see when imaging Pericardial effusions? 2
- Gains to high
- Image depth too shallow ( we may miss effusion)
What do we assess for in terms of pericardial effusion in terms of 2D?
Pseudoaneurysms of the LV
What 3 things are commonly mistaken for pericardial effusions on 2D?
- Anterior epicardial fat
- Dilated coronary sinus
- Large pleural effusion
What does this image demonstrate in terms of Pericardial effusion?
In parasternal the beam transects the descending aorta, mistaken for posterior effusion
What is a hemopericardium?
Collection of blood in the pericardial sac
What does these images demonstrate?
Hemopericardium
Tamponade usually occurs with what?
Rapid fluid accumulation
Where is pressure higher with tamponade?
Higher pressure in intrapericardial cavity
What happens during cardiac tamponade?
Impairs the cardiac chamber filling, thus impairing the SV and CO
What is the outcomes for Tamponade?
Potentially life threatening depending on amount of fluid and time of accumulation
How common is subacute and chronic tamponade?
Common
How common is acute tamponade?
Less common
What are causes of pericardial tamponade? 3
- Pericarditis
- Metastatic disease
- Radiation therapy
What are causes of acute tamponade?
Trauma
What is often seen with tamponade?
Fibrin strands
What happens in the right heart with Tamponade? 2
- RA systolic collapse
- RV diastolic collapse
What happens as a result of right chamber collapse during tamponade? 3
- RV filling is impaired
- Reciprocal RV/LV respiratory changes producing septal shifting
- SVC and IVC become dilated
What are some 2D features of tamponade?4
- RA systolic collapse
- RV diastolic collapse
- Reciprocal changes in ventricular volume with respiration variation
- Septal shifting
What does this image demonstrate?
IVC plethora
What is the criteria for pericardiocentesis? 3
- Large effusion
- Tamponade
- Fluid analysis
What is the pericarditis?
Inflammation of the pericardial sac/ lining
What are subsequent results of pericarditis? 2
- Fibrosis and thickening
- Purulent (infected)
What the etiology for pericarditis? 4
- Acute infection
- Post- surgical
- Post MI: dressler’s syndrome
- Chronic pericardial effusion
What is constrictive pericarditis? 2
- Parietal pericardium is not compliant
- RV and LV restrictive diastolic filling
What is another name for constrictive pericarditis?
Stuck pericardium
What does this image demonstrate?
The difference between tamponade and constrictive pericarditis
What diastolic dysfunction is associated with constrictive pericarditis?
Grade 3 DD
Why can’t the heart expand as much with constrictive pericarditis?
Increased fluid in the pericardial sac
In term of constrictive pericarditis, when pericardial fluid regresses what happens? 2
- Fluid resolution
- Residual fibrin deposition
What are the clinical signs of pericarditis?2 (what do we hear with auscultation)
Through auscultation from
1. Pericardial friction rub
2. Pericardial knock
What does pericardial friction rubs sound like?
Sandpaper
What is pericardial knocks associated with?
Constrictive pericarditis
What is pericardial friction rubs a symptom of?
Diastolic murmur
What are symptoms of Pericarditis? 2
- Chest pain
- Kussmaul’s signs
What does the ECG look like with pericarditis?
Diffuse ST segment elevation
What are some 2D findings for constrictive pericarditis? 3
- Thickened, echogenic pericardium
- Fibrotic strands or clot
- IVC dilated and non-collapsing
What does this image demonstrate?
Constrictive pericarditis
What does this image demonstrate?
The railroad appearance of constrictive pericarditis in M mode
What does constrictive pericarditis look like with M mode?
Posterior LV wall stuck to the pericardium
What are some doppler findings of Constrictive pericarditis?4
- Increased MV E/A ratio
- Decreased MV deceleration time
- Decreased IVRT
- IVC plethora
What is the difference between normal normal TDI and Constrictive pericarditis TDI?
Lateral tissue doppler velocity is less than the medial TDI
What happens to the LV/RV/ IVS during constrictive pericarditis with inspiration?
- Decreased LV filling
- Increased RV filling
- IVS shift toward sleft
What happens with Expiration with constrictive pericarditis in terms of the LV/RV/IVS?
- Increased LV filling
- Decreased RV filling
- IVS shift towards right
What are some similarities of Constrictive pericarditis and Restrictive cardiomyopathy? 3
- Increased MV E/A ratio
- Decreased MV deceleration time
- Normal LV size and function
What are some differences between CP and RCM in terms of the atria?
CP: normal atrial size
RCM: enlarged atria
What are some differences between CP and RCM in terms of the pericardium?
CP: thickened/ bright pericardium
RCM: average E’ greatly decreased
In terms of CP and RCM, what are the differences between E’?
CP: lateral E’ less than septal E’, average e’ may be normal
RCM: average e’ greatly decreased
In terms of CP and RCM, what is the differences between TR/MR?
CP: Infrequent TR/MR
RCM: Common TR/MR
In terms of CP and RCM, what is the differences with respiration?
CP: MV >25%, TV >50%
RCM: no variation with respiration