24 hour tapes and echocardiograms for primary care · 2021. 8. 22. · email to...
TRANSCRIPT
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24 hour tapes and
Echocardiograms for
primary care
Dr Andrew Wragg
Cardiologist
Barts Health NHS
Trust
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Requesting and Interpretation of 24 hour tapes and Echocardiograms in primary care
• How and whom to refer
• How to interpret the reports– 24 hour tapes
– Echocardiograms
• Avoiding over or misinterpretation
• Deciphering jargon
• Cases
• NOT COVERING OBVIOUS PATHALOGY
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How to refer
email to [email protected]
fax to 0203-594-3209
• Cardiac diagnostics
• Cardiac Dept
• 2nd Floor, North Tower, Royal London Hospital.
• Patients will be phoned to receive an appointment within 2 weeks
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24 hour tapes
• Generally low yield diagnostic test
• Can be reassuring
• Normal tape does not RULE out serious rhythm disturbance
• Patient diary very helpful
• Always ask if 24 hour tape really necessary
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Indications
• Palpitations
• Syncope
• Always consider background of a patient
• High risk features: known cardiac disease/ risk factors
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Generally benign findings on tapes
• Sinus arrhythmia
• Sinus bradycardia or tachycardia
• Ectopics (VEs or SVEs)
• Nocturnal conduction disturbances
• Very short arrhythmias (e.g few beats of SVT or AF)
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Echocardiography
• Main indications for echo
– Assess LV structure and function
– Assess valve structure and function
– Estimate pulmonary artery pressures
• TH referral form
– ? Heart failure/ Breathlessness/ other
• Other (cardiac masses/ pericardial disease etc)
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Echo jargon and abbreviations
• LV• RV• AV• MV• TV• PV• PASP• IVC• IAS• RWMAs
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Echo jargon and abbreviations
• LV left ventricle• RV right ventricle• AV aortic• MV mitral• TV tricuspid• PV pulmonary• PASP pulmonary artery systolic pressure• IVC inferior venae cavae• IAS inter atrial septum• RWMAs regional wall motion abnormalities
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LV systolic function
• Normal LV < 56 mm at the end of diastole
• Normal LV systolic function: EF > 55%
• However LV EF may not measured
• Report may be qualitative
• MILD/ MODERATE/ SEVERE LV impairment
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Murmurs and valve disease
Indication for echo:
• Murmur + cardiac or respiratory symptoms
• Murmur in an asymptomatic individual if structural heart disease suspected
– history
– clinical features
– other investigation (ECG)
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Echocardiography and valve disease
• Mild or trace regurgitation requires NO action
• If valve anatomy abnormal but functional lesion mild, consider referral
• Sometimes echo underestimates valve severity: bad symptoms or clear signs refer on
• In most settings valve disease is a chronic process
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Echo detail and the breathless patient
• Diastolic dysfunction
• Regional wall motion abnormalities (RWMA)
• Pulmonary artery pressures (PAP or PASP)
• Pericardial effusions
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Diastolic dysfunction
• Often mentioned on echo reports (elderly/ hypertensive/ DM/ CKD patients)
• Questionable significance if pt well
• No prognostic therapies
• Symptom based approach based on diuretics
• Therefore only relevant in breathless patient
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Regional wall motion abnormalities
• Often mentioned on echo reports
• Questionable significance
• May be due to a previous cardiac event
• If patient well & no symptoms & LV normal size and function then unlikely to be important
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Pulmonary artery pressures
• Raised PASP usually secondary:
– Lung disease
– Left sided heart disease
– OSA
• Normal PAP <30 mmHg
• Report might not say pulmonary hypertension but only comment on PASP
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Pulmonary artery pressures
• How do we calculate PASP?
• Calculated by measuring the velocity of the TR jet
• Fast TR jet: high PASP
• If normal PASP there is likely to be no TR
• Therefore impossible to measure PASP
• No TR on echo = normal PASP
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Pericardial effusions
• May be mentioned on reports
• Pericardial effusion up to 1cm likely to be physiological
• For larger effusions:
– If no echo mention haemodynamic compromise
– No symptoms
No need for urgent action
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The breathless patient
• Age
• Fitness
• Lung disease
• Obesity
• Heart failure
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What to do if report confusing or management uncertain?
• Ring the department if technical question:
0203-594-2000
• Email the cardiology email advice line:
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74 breathless obese patient
• Tachycardia• Mild-moderately impaired systolic function• Dilated impaired RV• Trace of AR and mild MR and PR• Moderate to severe TR with PASP 75 mmHg + RAP• Lots going on: refer
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65 yo breathless female
• LV not dilated and good systolic function
• Trace MR and TR and trace PI
• Small effusion (no compromise)
• Normal Study
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26 yo female
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62 yo female
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59 yo male
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What to do if report confusing or management uncertain?
• Ring the department if technical question:
0203-594-2000
• Email the cardiology email advice line: