Chapter 1 — Scope, Competence, Training and Governance

📚 Guideline basis

ACCP/SRLF 2009 competence statement in critical care ultrasonography; Expert Round Table on Echocardiography in ICU — International consensus statement on training standards for advanced critical care echocardiography (Intensive Care Med 2014;40:654–66); ACCP/ATS/SCCM training documents; ASE/EACVI accreditation frameworks; ESICM critical care ultrasound curriculum.

The discipline defined

Critical care echocardiography (CCE) is the performance and interpretation of cardiac ultrasound by the treating clinician, at the bedside, to answer a question that will change management within minutes to hours. Three features distinguish it from consultative cardiology echocardiography:

The serial dimension matters most. A single echocardiogram is a diagnostic test; repeated echocardiography in the same patient across a therapeutic intervention is a haemodynamic monitor, and it is used that way in modern practice.

Two competence levels

The 2014 international consensus statement, endorsed by ESICM, ACCP, ATS, SRLF and the Asia-Pacific, Canadian, Australasian and Hong Kong critical care bodies, formalised a two-tier structure that remains the international reference.

Basic critical care echocardiography (BCCE)

A goal-directed, largely qualitative, two-dimensional examination performed to answer binary questions.

Scope: gross left ventricular systolic function (normal / hyperdynamic / moderately impaired / severely impaired); gross right ventricular size relative to the left; pericardial effusion and tamponade physiology; gross hypovolaemia; inferior vena cava size and respiratory variation; obvious gross valvular abnormality prompting escalation.

Explicitly out of scope: any Doppler-derived quantification, valve severity grading, filling-pressure estimation, prosthetic valve assessment, endocarditis exclusion, aortic dissection exclusion.

Failure mode: the confident negative. BCCE is a rule-in tool for gross pathology and a poor rule-out tool. "No effusion, LV looks fine" excludes tamponade and severe systolic failure; it does not exclude critical aortic stenosis, papillary muscle rupture, or a large intracardiac shunt.

Advanced critical care echocardiography (ACCE)

Full quantitative transthoracic capability plus, in most curricula, transesophageal capability.

Scope: complete Doppler quantification — stroke volume and cardiac output, valvular gradients and areas, filling-pressure estimation, pulmonary artery pressures, shunt quantification; systematic valve assessment; TEE for the poor-window and post-cardiac-surgery patient; assessment during mechanical circulatory support.

Training pathways specify structured theoretical coursework plus a documented number of personally performed and reported supervised studies. A minimum of around 30 fully supervised cases is the figure most often reproduced in the training literature as a target for advanced competence.

⚠️ Evidence quality

Case-number requirements differ between the international consensus statement, national accreditation bodies (BSE, EACVI, NBE) and individual curricula, and the exact figure attributed to any one document should be checked against that document before it is quoted in a local training policy. Every published figure is acknowledged as a floor rather than a target: competence is demonstrated by assessed performance, not by a logbook count.

Competence is not a course

Three components must be documented separately, because a deficiency in any one produces a distinct and predictable clinical error:

The most dangerous learner is technically proficient and cognitively incomplete: high-quality images generating confidently wrong physiology.

Governance requirements

An institutional CCE programme requires, at minimum:

1. Image archiving. Studies performed for clinical decision-making must be stored, retrievable, and linked to the medical record. An unrecorded study cannot be reviewed, audited, taught from, or defended.
2. Structured reporting. A report entered in the record, stating the indication, the level of study (basic vs advanced), the views obtained, the findings, the limitations, and the operator. See Chapter 42.
3. Quality assurance. Periodic blinded over-read of a sample of studies by an independent expert, with feedback. Programmes without over-read drift, and drift is invisible from inside.
4. Defined escalation criteria. Written triggers for requesting a comprehensive cardiology study or TEE, so that escalation is a protocol rather than a personality trait.
5. Machine governance. Probe disinfection (high-level disinfection mandatory for TEE probes), preset management, and machine maintenance.

Scope-of-practice boundaries

CCE does not replace comprehensive echocardiography where the question is structural and non-urgent. Formal referral is required for: suspected endocarditis requiring vegetation exclusion; assessment for valve intervention; congenital heart disease; cardiac masses; aortic dissection where TEE or CT is required for definitive exclusion; and any situation where the CCE finding will determine surgical candidacy.

🛑 Critical pitfall: Reporting a basic study in the language of an advanced one. "Normal LV function, no significant valvular disease" written after a two-view focused scan is a documentation error with medico-legal consequences. If Doppler was not performed, the report must state that valvular disease was not excluded.

🛑 Critical pitfall: Using a normal focused cardiac ultrasound to close a diagnostic pathway in undifferentiated shock. The negative predictive value of a basic study for the causes it does not evaluate is zero, and clinicians systematically over-read normality.

• 💡 Clinical pearl: The single most useful discipline in CCE is stating the clinical question aloud before touching the probe. An examination performed to answer "why is the lactate rising?" acquires different images from one performed to answer "is this patient fluid responsive?"
• 💡 Clinical pearl: Serial studies beat single studies. A stroke volume measured before and after an intervention in the same patient, with the same probe position, is far more informative than any absolute value compared against a published normal range — because the patient is their own control and the systematic error cancels.
• 💡 Clinical pearl: Record the loading conditions with the study: heart rate, rhythm, blood pressure, vasoactive doses, ventilator mode, PEEP, and tidal volume. Without them, a follow-up study is uninterpretable.

References

1. Expert Round Table on Echocardiography in ICU. International consensus statement on training standards for advanced critical care echocardiography. Intensive Care Med 2014;40:654–66. PMID 24615559.
2. Mayo PH, Beaulieu Y, Doelken P, et al. American College of Chest Physicians/La Société de Réanimation de Langue Française statement on competence in critical care ultrasonography. Chest 2009;135:1050–60.
3. Mayo PH, Vieillard-Baron A, et al. Training consensus in critical care echocardiography. Chest 2014. PMID 24831783.
4. Sanfilippo F, Huang S, Herpain A, et al. The PRICES statement: an ESICM expert consensus on methodology for conducting and reporting critical care echocardiography research studies. Intensive Care Med 2021;47:1–13. PMID 33275163.
5. Spiering et al. Focused cardiac ultrasound recommendations. J Am Soc Echocardiogr 2019. PMID 31421279.