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Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.

Transthoracic and transoesophageal echocardiography

Cardiology · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

RapidFull
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Escalate

Use urgent bedside TTE for shock, suspected tamponade or major mechanical complication, but do not let imaging delay immediately necessary resuscitation or reperfusion. Suspected aortic dissection may require TOE or CT according to stability and local expertise.

Synopsis

Choose TTE or TOE for the clinical question, recognise urgent findings and interpret measurements in the context of image quality and loading conditions.

  • TTE is first-line for ventricular size and function, valve assessment, pulmonary-pressure estimates and pericardial fluid.
  • TOE places the probe near posterior cardiac structures and gives higher-resolution views of atria, valves and thoracic aorta.
  • A focused bedside echo answers a narrow emergency question; it is not a substitute for a complete accredited study.
  • Ejection fraction is load-dependent and should be integrated with volumes, regional motion and clinical state.
  • Valve severity requires multiple concordant parameters; never grade from colour-jet area alone.
  • TOE is semi-invasive: confirm consent, fasting status, airway and oesophageal risks, sedation plan and monitoring.
  • Negative imaging does not end a high-probability endocarditis or aortic-dissection work-up; repeat or alternative imaging may be required.

Key red flags

Tamponade physiology

Pericardial effusion with right-sided chamber collapse, marked respiratory inflow variation and a plethoric IVC supports haemodynamic compromise; clinical shock determines urgency.

Post-MI mechanical complication

New severe mitral regurgitation, ventricular septal defect or free-wall rupture with instability demands immediate cardiology and surgical escalation.

Investigation priorities

01
Comprehensive TTEFirst stepFirst line

First-line structural and haemodynamic assessment.

Management branches

Preferred routeNew murmur or suspected heart failure

Symptoms, signs, ECG or natriuretic peptide suggest structural disease

  1. Request comprehensive TTE with a specific clinical question and relevant prior information.
  2. Grade any lesion using multiple measures and relate it to ventricular response and symptoms.
  3. Refer moderate or severe valve disease, ventricular dysfunction or pulmonary hypertension through the appropriate specialist pathway.
  4. Set surveillance from the lesion and guideline, not an arbitrary annual default.
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Sources and review status4 sources · checked 27 Aug 2026 · clinical review pending+
Sources

Sources and review status

National guidance is shown before implementation-dependent detail. Apply principles in context and verify current guidance when a decision affects care. Source check completed 27 Aug 2026; clinical approval remains outstanding.

  • NICE NG106: Chronic heart failure in adults
  • NICE NG208: Heart valve disease presenting in adults
  • ESC 2023 Guidelines for endocarditis
  • ESC/EACVI cardiovascular imaging consensus documents

Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

Authoring stateRapid draftClinical stateAwaiting reviewJurisdictionUnited Kingdom