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  • 1. Guidance and standards in training and service delivery of focused ultrasound and echocardiography (FUSE) in UK intensive care medicine Prepared by the writing group of the FUSE ICM collaboration, April 2009 1
  • 2. Table of contents 1. Introduction to focused ultrasound and echocardiography (FUSE) 2. Philosophy of FUSE 3. Training modules available for FUSE ICM 4. Standards and recommendations for FUSE ICM training 5. Standards and guidelines in delivering a FUSE ICM service 6. Guidance on ultrasound machines and technology 7. Guidance on interactions with specialist services 8. Appendices i) The FUSE ICM haemodynamic dataset ii) Example of focused echocardiography report form iii) Summary sheet to accompany images for review iv) Programme for haemodynamic module v) Programme for lung and pleura module vi) Programme for vascular interventional module vii) Theoretical requirements and dataset for lung and pleura viii) Theoretical requirements and dataset for vascular interventional ix) FUSE transoesophageal echocardiography (TOE) module 9. Documentation control 2
  • 3. 1) Introduction to FUSE and UK context The provision of focused ultrasound and echocardiography or FUSE (throughout this document transthoracic echocardiography is implied) imaging is evolving at a rapid pace. Whilst initially the almost exclusive domains of cardiology and radiology, allied specialties have made increasing efforts to acquire at least elements of ultrasound technology, adapted to their clinical needs. Examples of this include vascular access, nerve blockade, assessment of free intra-abdominal fluid in trauma and echocardiography/ haemodynamic assessment. This development of ultrasound to direct a limited or “focused” range of imaging or procedures goes under many titles but this document will use the term “focused ultrasound and echocardiography” (FUSE), with a non-exclusive emphasis on the needs of intensive care medicine practitioners. Intensive care medicine (ICM) in the UK and internationally has found a genuine clinical need and indication for FUSE when managing critically ill patients but to date the development and formal delivery of training has been absent. It is the delivery of safe and effective FUSE, by UK ICM clinicians (typically non-radiologists and non-cardiologists) that this document considers. Much of the work on delivering FUSE ICM has already been done by others, for example and not-exclusively the FATE group, Royse et al, and FEEL. In this sense FUSE ICM in the UK is not a “new” protocol or acronym to add to an expanding list, but a reflection of an expanding collaboration between intensive care medicine practitioners and beyond (including cardiology, emergency medicine, radiology). The work of others in facilitating UK intensive care medicine is freely acknowledged by this group and the similarities to other available documents or teaching is not a “re-branding” but a testament to their contribution to patient care. Furthermore, the common elements of the College of Emergency Medicine level 2 training are emphasised demonstrating the generic nature of ultrasound to assist care of the critically ill patients, regardless of the hospital department they find themselves in. 3
  • 4. 2) The philosophy of focused ultrasound and echocardiography (FUSE) • FUSE may be defined as an anatomically (eg echocardiogram) or physiologically (a “shock” scan) directed scan performed during patient care to answer a specific clinical query or direct a specific procedure, by a practitioner with a defined but restricted competency and knowledge in that arena • Incorporating clinical data alongside the FUSE scan is essential to direct patient management eg in the setting of circulatory shock and trauma free intra-abdominal fluid is significant, during peritoneal dialysis it is not. In this sense FUSE is an extension of clinical assessment, not a replacement for it • Diagnostic scans should be directed to answering simple clinical questions, complimented by clinical assessments, with simple (ideally binary yes/ no) answers eg does this patient have a significant pericardial effusion? • FUSE training is best delivered on a competency based system with a modular structure to ensure clinicians learn and retain skills used in frequent clinical practice. FUSE should be restricted to regions and techniques which are within a clinician’s scope of frequent practice • FUSE scans may “rule in” (high sensitivity, strong positive predictive value) or “rule out” a condition: as in all screening both are rarely achieved eg focused abdominal scanning in trauma (FAST) is generally a specific “rule in” test. Practitioners must interpret FUSE scans in the knowledge of these performances • FUSE should compliment or direct fuller departmental scans but does not obviate or replace such scans performed by specialists. Indeed the safe delivery of FUSE requires mutual understanding and support between specialist and non-specialist services • There is a limited range of anatomy and/ or physiology within the FUSE practitioner’s scope of practice: this must be remembered and indeterminate or non-diagnostic scans reviewed with appropriate specialties eg a clinician experienced in focused echocardiography may be tempted to interrogate a prosthetic heart valve, where this is not a part of their regular clinical case-mix • The temptation to “over-interpret” into areas outside of area of competencies is an acknowledged danger to safe practice of FUSE and requires constant reflection and awareness by practitioners eg commenting on haemodynamic significance of adult congenital heart disease 4
  • 5. • Clinicians need not fully interpret all findings on a scan. Identifying something atypical or “funny” and seeking advice is an acceptable and desirable outcome, which would not have otherwise occurred without FUSE • FUSE should never delay or detract from more definitive therapies or investigations • Ultrasound fails in many circumstances, most notably at an air interface. Situations where FUSE is technically unlikely to be successful should be rapidly identified and the scan abandoned eg persisting in attempting an echocardiogram FAST scan in the presence of extensive pneumothorax/ peritoneum It is readily apparent therefore that the safe delivery and interpretation of FUSE scans requires good judgement and awareness by practitioners and is best described in qualitative rather than quantitative terms. To paraphrase “A fool with a stethoscope will be a fool with an ultrasound machine”. 5
  • 6. 3)Training modules available for FUSE ICM While the following list is not intended to be exhaustive it is hoped to reflect the major modules relevant to UK ICM trainees and their primary clinical considerations/ scenarios. This list is adapted from the Royal College of Emergency Medicine (EM) level 1 and 2 competency documentation. This includes the EM ultrasound syllabus (http://www.collemergencymed.ac.uk/asp/document.asp?ID=3446), and certification in focused ultrasound (http://www.collemergencymed.ac.uk/asp/document.asp?ID=4412) . This latter document gives a fuller list of available modules within emergency medicine which have been restricted to those of more immediate interest to ICM. FUSE module Principal clinical Notes questions Focused transthoracic Diagnosis during Overlap with a variety of echocardiography haemodynamic “protocols” eg FATE compromise, response to (Focused Assessment by therapy eg fluid Transthoracic Echo) or Royse ACES Why is my patient A cardiac and non-cardiac (Abdominal and Cardiac shocked? protocol considering the Evaluation in Shock) major causes of shock including the abdominal aorta FEEL Why is my patient in a (Focused Echo Evaluation periarrest state and in Life Support) therapeutic decisions? FAST Is there free intra- Training pathway well (Focused Assessment abdominal or pericardial described and validated in with Sonography for fluid in a trauma patient? emergency medicine Trauma) Vascular: interventional Real time visualisation of Practice is widespread in vessel cannulation UK following NICE guidance, training has been delivered ad hoc Vascular: diagnostic Evaluation of It is expected clinicians Arteriovenous systems eg will restrict competence to DVT diagnosis, renal prominent areas of clinical perfusion, trans-cranial practice interrogation Pulmonary and pleura: Does the patient have diagnostic and pleural fluid or air? interventional Can it be safely drained? Is interstitial oedema present? Renal Is an obstructed renal tract the cause of acute 6
  • 7. renal failure? Can renal perfusion be demonstrated? Hepatobiliary Is an obstructed biliary tree the cause of pain, deranged liver or pancreas function? Can hepatic perfusion be identified? Is portal pressure elevated/ portal thrombosis present? Nerve: interventional Real time visualisation of Specific nerve blocks perineural placement of learned should be local anaesthetic solution restricted to areas of frequent practice Focused Diagnostic scan to Under development by the transoesophageal determine cause of FUSE working group, see echocardiography haemodynamic appendix ix) disturbance or responses to therapy http://www.fate-protocol.com/portal/ Royse C, Donnan G, Royse A. Pocket guide to perioperative and critical care echocardiography. 1 st ed. Sydney: McGraw-Hill; 2006. p. 218 Royse CF, Seah JL, Donelan L, Royse AG. Point of care ultrasound for basic haemodynamic assessment: Novice compared with an expert operator. Anaesthesia 2006;61:849-55 http://www.emergencyultrasound.org.uk/resources/ACES.ppt http://journal.ics.ac.uk/pdf/0902197.pdf http://www.trauma.org/archive/radiology/FASTintro.html http://www.emergencyultrasound.org.uk/resources/EDUC+Pre- Course+Reading.pdf http://www.nice.org.uk/nicemedia/pdf/Ultrasound_49_GUIDANCE.pdf http://www.nice.org.uk/nicemedia/pdf/IPG285Guidance.pdf 7
  • 8. 8
  • 9. 4 Standards and recommendations for FUSE ICM training • The working group anticipate a 5 year period where FUSE is generally the exception in UK intensive care and training will be delivered by enthusiasts, who may not be in the same hospital or even base specialty as the trainee. As a critical mass of clinicians emerges, so delivery of FUSE training will become easier and ultimately FUSE will become a standard of acute intensive care medicine rather than an aspiration • These training recommendations should be read in conjunction with the standards and guidelines for service delivery • Inevitably the training structure and qualifications will evolve. This document will be reviewed at 3 and 5 years by the writing group • FUSE training will often be delivered by clinicians with a non- intensive care medicine background, and this multidisciplinary approach is essential and supported (ie learning a technique rather than a “specialty”) • The modern intensivist should have a modular training, aspects of which will be dependent upon practice specialisation. We suggest this comprises 3 “base” modules common to all intensivists: 1) Focused haemodynamic assessment and transthoracic echocardiography(transthoiracic echo), with a selectable FUSE transoesophageal echo (TOE) module 2) Vascular interventional 3) Lung and pleura The content and programme for these modules is covered in the appendices • Additional modules to be selected will reflect the interest and specialisation of the practitioner. For example a neurointensivist may wish to examine cerebral haemodynamics and transcranial Doppler, a specialist in liver disease may select hepatobiliary • We suggest trainees dedicate the equivalent of at least one session per week over 6 months to achieve FUSE ICM certification in the 3 base modules.The exact time required will vary depending upon trainee aptitude, case availability etc. . • All examinations undertaken should be recorded in a logbook and representative samples of all the examinations stored for potential review • The focused haemodynamic module should include 50 complete examinations with 10 reviewed in detail with the supervisor. Of these 10, 2 should demonstrate a complete examination (see appendix 1) and may thus be of normal individuals: the remaining 8 should demonstrate a range of the haemodynamic disturbances. These reviewed cases should be accompanied by a clinical history, summary of the ultrasound findings, therapy instituted and patient outcome (see appendix) 9
  • 10. • Within the haemodynamic module, no more than 2 of these echocardiograms should be focused TOE ie 8 should be TTE • The lung and pleura FUSE ICM module should focus on 3 main pathologies, namely pneumothorax, pleural effusion and pulmonary interstitial oedema (eg ARDS). This module would require 25 scans undertaken to evaluate pneumothorax, 25 pleural effusion and 25 interstitial oedema. The detailed review should incluse 3 images of each of these pathologies, 2 demonstrating abnormality and 1 normal by comparison • The vascular interventional module should include 25 internal jugular, 25 femoral and 25 axillary/ subclavian vein assessments. 25 arterial examinations (suitable for invasive monitoring) should be included. Records of at least 2 examples from at least 2 anatomical venous sites and 2 arterial should be reviewed with the trainer demonstrating real-time vessel cannulation. • All trainees should have an identified training supervisor who should hold the equivalent of level 2 training in emergency medicine ultrasound. Specialist training and CCST/ CCT in an ultrasound based specialty eg a consultant cardiologist or radiologist would clearly allow training supervision as would specialist ultrasound training eg an echocardiography technician holding British Society of Echocardiography accreditation • Perhaps of equal importance to the supervisor qualification is their ability to recognise FUSE philosophy and training requirements, and not deliver comprehensive ultrasound examination training to individuals who actually seek FUSE • It is recognised that some areas of practice eg nerve blockade and vascular are practiced and taught by many experts, but that no formal qualification currently exists. A “grandfather clause” is being considered with the Royal College of Anaesthetists, Association of Anaesthetists and Intensive Care Society and Intercollegiate Board of Intensive care Medicine to allow such clinicians the opportunity to pass on their knowledge and recognise/ formalise their skills and training with a qualification • The qualification as outlined above for FUSE in UK intensive care medicine shall be termed “FUSE ICM trained” and is intended to recognise clinicians with a training equivalent to level 2 Emergency Medicine accreditation within the modules undertaken. This level of qualification has been supported by the Royal College of Emergency Medicine and is endorsed by the Intensive Care Society • It is emphasised that FUSE ICM is not a new discovery, course or acronym and draws extensively on the work of others- it is the delivery of focused ultrasound training within the UK ICM system. Components of it are already being delivered, to a high standard, on an ad hoc basis • Ultimately it is anticipated that FUSE ICM training can be incorporated and formalised in the UK Diploma of Intensive Care Medicine (DICM) 10
  • 11. 11
  • 12. 5 Standards and guidelines in delivering a FUSE ICM service • A lead clinician should be identified within the intensive care unit with responsibility for training and service delivery of FUSE. This individual should act as a supervisor for training and have a keen interest in ultrasound education and service development • The FUSE lead should be encouraged to dedicate a session per week or equivalent to ultrasound and have a significant clinical involvement in clinical cases requiring ultrasound evaluation • FUSE trainers are encouraged to pursue their own ongoing training and ultimately to obtain training equivalent to comprehensive, non- focused scanning eg BSE accreditation in echocardiography • “Competence” in providing FUSE examinations in intensive care is described in the terms of FUSE ICM training and under the general philosophy of focused scanning. In requiring extensive clinician judgement in performing and interpreting FUSE scans an explicit list of required competencies is challenging to produce and the “philosophy” is equally important • It is imperative that excellent working relationships are maintained with appropriate specialist departments to support clinicians providing focused scans. The philosophy and context of this scanning must be understood by those within and without the intensive care • Clinicians practicing FUSE should restrict this to areas of frequent clinical practice with at least 3- 4 scans per week performed • A forum for multidisciplinary review of images from focused scans is encouraged eg departmental echo meetings or visiting specialists reviewing images on the intensive care unit machine • A machine dedicated to intensive care unit use should be available with probe selection appropriate to its use. Guidance on machines is provided below • Infection control measures and sterilisation of multiple use equipment eg ECG leads and probes should be undertaken in accordance with the manufacturer’s recommendations and local arrangements. In particular invasive probes eg TOE require specific local arrangements 12
  • 13. • The results of the scan should be recorded and reported in a standardised way, appropriate for the unit and circumstances eg a specialised cardiac unit may include more detailed measurements on a focused scan than a non-cardiac unit. An example of a haemodynamic report sheet, from a non-cardiac general intensive care unit is given in the appendices • Focused scans which are used for diagnostic or therapeutic reasons should be reported by a clinician with training as outlined above and holding FUSE ICM training or equivalent • Ultrasound images must be identifiable by the patient’s name and at least one other unique identifier. The date, time and person performing the scan and an ECG should be included for echocardiograms. Existing conventions on labelling and orientation should be observed. Most of these issues may be quickly resolved by consultation with the specialist department in the hospital and observing existing conventions • Stored images should be available for review and backed up in another format (eg remote hard drive or central drive) according to BSE guidance. All (identifiable) stored images represent confidential patient information and should meet the requirements of data protection and Caldicott principles. Images stored on portable media eg USB memory sticks should observe similar standards of data management • Under most circumstances in intensive care, informed consent is not possible. As a modality ultrasound is largely non-invasive with no material risk; if being used to direct a procedure (eg vascular access) or a semi-invasive scan (eg TOE) informed consent should be sought and recorded where the patient condition allows. Where patients cannot consent it is good practice to inform next of kin and relatives of such scans, in their clinical context 13
  • 14. 6 Guidance on ultrasound machines and technology • Machines should be portable, anticipating movement between clinical areas, and able to transfer to the patient and bedspace easily. There are advantages and disadvantages to hand-held vs cart based systems and selection depends upon clinical use and preference • It is rarely appropriate that FUSE utilises a high-end departmental machine • The machine must support a range of probes. For intensive care medicine this will usually be a high frequency linear array (vascular, pleura, nerve), a phased array “echocardiography” and a lower frequency curvilinear probe (pleura, abdomen and deep nerve) • This range of probes should be capable of providing appropriate depth and resolution 2-D imaging, M-mode, colour flow, continuous and pulse wave Doppler as a minimum • Echocardiograms should be able to include an ECG rhythm recording • The machine should capture examples of static images and cine loops • The machine should be physically robust, waterproof and able to be disinfected between cases • When funding such a service and machine the service contracts can represent a significant ongoing expenditure and most exclude accidental damage to delicate probes. Similarly, software updates can represent significant unexpected costs. Such costs should be anticipated and may be able to be linked to existing contracts within the hospital • The machine may be used by visiting specialists, so it should be appropriate for their use and prior consultation is suggested • The ability to link and archive intensive care images with existing databases within a hospital system is encouraged 14
  • 15. 7 Guidance on interaction with specialist services • The philosophy of focused scanning makes it clear that on frequent occasions consultation with “specialist” services (in particular radiology and cardiology) is essential for correct interpretation and patient care • Such an interaction requires good communication and a clear understanding from the intensive care and the specialist service on what FUSE can offer and what it can’t. It should be understood clear that FUSE may direct or inform specialist investigations and services, but will never replace them and they are complimentary, not competing • The existing governance arrangements for ultrasound and echocardiography within a system should be reviewed and in general FUSE services should try and integrate with these • Aspects of care which may be shared eg report results and documentation should be developed in consultation with the specialist service • The lead for intensive care FUSE should have a nominated point of contact with specialist services for review of cases, education and training and support of service • It is good practice that frequent contact with specialist services (eg multidisciplinary meetings, teaching or case reviews) occurs in a friendly and co-operative environment. FUSE clinicians should be prepared to go outside the intensive care to strengthen these arrangements eg visiting echo lab or ultrasound suite In brief, where we see FUSE and specialists interacting well, there will be a free flow of information in both directions with neither group feeling threatened or not supported, and with patients undergoing high quality focused scans which improve their management and outcomes. 15
  • 16. Appendices i) FUSE ICM haemodynamic dataset This dataset is intended to represent the FUSE “full examination” which should be obtained where time and technical conditions allow. This dataset has been adapted from the Royal College of Emergency Medicine ultrasound level 2 standards (http://www.collemergencymed.ac.uk/asp/document.asp? ID=4565&subID=249&Cat=College of Emergency Medicine ) , British Society of Echocardiography tyransthoracic echocardiography minimum dataset (http://www.bsecho.org/index2.php? option=com_docman&task=doc_view&gid=33&Itemid=61) and WINFOCUS intensive care echocardiography recommendations (http://www.cardiovascularultrasound.com/content/pdf/1476-7120-6-49.pdf) . In practice many focused scans do not include all this data for technical or clinical reasons and the reviewed scans for FUSE ICM training should therefore include two complete examinations which, be necessity, may be performed on healthy individuals. • The patient should be identified by name and at least one other unique identifier (typically date of birth and hospital number) • The clinician should be identified (eg initials) • An ECG rhythm strip should be recorded Abbreviations used below These abbreviations are used in clinical practice and adapted from the BSE minimum data set: PLAX (parasternal long axis), PSAX (parasternal short axis), LV (left ventricle), LA (left atrium), RV (right ventricle), RA (right atrium), LVOT (LV outflow tract), LVID (LV internal diameter in systole/ diastole), TV (tricuspid valve), PV (pulmonary valve), VTI (velocity time integral), SV (stroke volume), CO (cardiac output), PAP (pulmonary artery pressure), RWMA (regional wall motion abnormalities), FS (fractional shortening), FAC (fractional area change), A4C (apical 4 chamber view,etc), EF (ejection fraction), TAPSE (Tricuspid annular plane systolic excursion), RVSP (RV systolic pressure), V1 (LVOT velocity), V2 (AV velocity), LAP (left atrial pressure) View Modality Structures assessed Measurements Calculation PLAX 2D LV cavity size, wall LVIDs, LVIDd FS thickness, RV cavity size LA in 2 (Derive and function dimensions Teicholz LA size LVOT and values and Aortic root sino-tubular understand Aortic and mitral valve junction limitations) appearance and function PLAX M-mode LVIDs, LVIDd FS 16
  • 17. Mitral LV cavity size, wall LA in 2 valve thickness, RV cavity size dimensions tips LVOT and Aortic LVOT, LA size, AV sino-tubular valve excursion junction tips PLAX CFD MV (Colour AV flow Venricular septum Doppler) PLAX 2D RV function and size RV TV function inflow PLAX CFD TV assessment RV inflow PLAX 2D RVOT and PV structures RV outflow PLAX CFD PV RV outflow PLAX Spectral PV Peak, mean SV, PV RV Doppler and VTI gradient, if outflow PR PAPd and mean PSAX 2D LA, RA, interatrial Surrogate Aortic septum and movement LAP valve TV level RV cavity size and function PV and RVOT/ pulmonary artery AV short axis function, coaptation PSAX CFD AV, TV, PV and AV level interatrial septum PSAX Spectral RVOT Peak, mean SV, PV AV level Doppler and VTI gradient If PR PAPd PSAX 2D MV MV area MV planimetry level PSAX 2D LV function and LVIDs, FS Mid RWMA’s LVIDd, FAC papillar ventricular y septum Planimetry LV area systole 17
  • 18. and diastole A4C 2D LV cavity size, function Area EF (septum and lateral Volume SV and CO walls) (Simpson’s) Surrogate RV cavity size and LAP function Relative RV/ LV sizes LA and RA interatrial septum MV TV A4C M-mode TV annulus Motion TV TAPSE annulus A4C CFD MV TV Ventricular and atrial septa A4C Spectral LV inflow e/a wave Doppler TV Peak vel TR RVSP jet A5C 2D LV cavity size and (LVOT function view) AV function and LVOT A5C CFD LVOT and AV A5C Spectral LVOT and AV Peak, mean Peak and Doppler velocities V1 mean and V2 gradients and VTI significance of V1 vs V2 SV and CO A2C 2D LV cavity size and function (anterior/ inferior) MV leaflets A2C CFD MV 18
  • 19. A3C 2D LV cavity size and (A long function axis) MV AV (TV may be seen) A3C CFD MV AV A3C Spectral LVOT and AV V1 and V2 Peak and Doppler peak and mean AV mean, VTI gradient SV and CO Subcosta 2D LV and RV cavity and Surrogate l4 function, relative size LAP chamber Pericardium Interatrial septum motion Subcosta M-mode Pericardial effusion Dimensions/ l consistency 4 effusion chamber Subcosta CFD MV, TV and interatrial/ l4 ventricular septa chamber Subcostal 2D LV cavity size and LVIDs, LVIDd FS, SAX function LVAs, LVAd FAC Atrial septum Surrogate LAP Subcostal CFD Interatrial septa SAX 19
  • 20. Supra- 2D Descending aorta Descending sternal dimensions aorta area view Supra- CFD Aortic blood flow and sternal direction view Supra- Spectral Aortic velocity VTI SV and CO sternal Doppler view IVC view 2D and IVC size Absolute size RAP and fluid M-mode Respiratory variation and responsiveness Hepatic (spontaneous respiratory vein ventilation) variation Pleura 2D and Pneumothorax Pulmonary views M-mode Pleural effusion comet scores Pulmonary parenchyma 20
  • 21. ii) Example of FUSE ICM haemodynamic report sheet included in patient notes from a “general” non-cardiac unit Ulster ICU Limited Echo Report Patient Details Indication & Haemodynamics: Date: Operator: Qualitative: Left Heart: Pericardium: Mitral: Right Heart & IVC: Aortic: Tricuspid: Pulmonary: Quantitative: M MODE LA (1.9-4.0cm) DOPPLER FLOWS (m/sec) AO (2.0-3.7cm) Mit E(0.6-1.3) Mit A(0.2-0.6) Cusps (1.5-2.7cm) DT(139-219ms) E :A (0.7-3.1) LV IVS (0.6-1.1cm) LVOT(0.7-1.1) AO (1.0-1.7) LV PW (0.6-1.1cm) Pul ((0.6-0.9) LV EDD (3.5-5.7cm) LV ESD (2.5-4.1cm) MVA plan cm2 MVA P1/2 T cm2 mmH RV EDD (0.9-2.6cm) AOV area cm2 AOV Grad g Fraction Shortening (25-40%) % Conclusion & clinical context: Signed: Note: This is a limited study only, and does not replace a departmental echo 21
  • 22. iii) Summary of clinical data to accompany images for haemodynamic FUSE ICM review The philosophy of focused scanning stresses the importance of interpretation in conjunction with clinical data. The following should accompany images available for review. A hypothetical example is given in italics Patient identifier John Smith, 01/01/1900 Clinical summary Urgent admission to ICU with shock and chest XR suggestive pneumonia Clinical What is the cause of this patient’s shock? question(s) to be What is the main haemodynamic disturbance? answered and What is the next stage in management? likely performance of FUSE Eg echocardiography has a good sensitivity (rule out) for pericardial effusion but poor sensitivity for submassive pulmonary embolus (rule in) Main findings of Depressed LV systolic function, no gross valve FUSE study pathology, RV non-dilated and hyperdynamic, no pericardial effusion. LV collapses at end systole and IVC non-dilated How were these Consistent with septic shock findings A fluid challenge and inotrope therapy were added interpreted and how did this assist management? What was the A target MAP of 65mmHg was achieved, urine output clinical outcome? increased and plasma lactate normalised. Were serial Repeat echocardiography demonstrated a non- examinations collapsing LV, and improved LV systolic function (FS, required? FAC and EF) The patient stabilised from a haemodynamic perspective and after 10 days of multiple organ support was discharged from intensive care 22
  • 23. iv) Programme for the haemodynamic FUSE ICM module Attend 2 day haemodynamic FUSE The syllabus is directed to how to obtain the dataset ICM theoretical course (appendix 1) and its interpretation The trainee should dedicate the This is by necessity a guide equivalent of one session per week over a projected period of 6 months Identify a FUSE ICM training This may not be an ICM clinician, but the individual supervisor should meet the standards outlined in 4. 50 haemodynamic examinations are A logbook of all examinations must be kept and performed with an attempt to obtain representative images stored to be available for review. the complete dataset where The clinical summary and report sheet form the basis for clinically or technically feasible each case in the logbook FUSE ICM supervisor and trainee Logbook of 50 cases is reviewed meet 10 cases are reviewed in detail, including clinical summary (appendix iii), a written report (ii) and representative images. 2 should be complete examinations with the full dataset (normal individuals acceptable) and the other 8 should demonstrate a range of haemodynamic disturbances Sign off If the above are satisfactory the trainee has completed the haemodynamic FUSE ICM module 23
  • 24. v) Programme for the lung and pleura FUSE ICM module Attend lung and pleura FUSE ICM There are currently many excellent national theoretical course course on this topic and provided they include the components of the FUSE ICM syllabus they are appropriate The trainee should dedicate the equivalent This is by necessity a guide of one session per week over a projected period of 6 months Identify a FUSE ICM training supervisor This may not be an ICM clinician, but the individual should meet the standards outlined in 4 25 evaluations for each of the major A logbook of all examinations must be kept and pathologies are undertaken ie representative images stored to be available pneumothorax, pleural effusion and for review. By nature not all of these scans will interstitial oedema ultimately demonstrate the suspected pathology FUSE ICM supervisor and trainee meet Logbook of 75 cases is reviewed 9 cases are reviewed in detail: 3 for each of pneumothorax, pleural effusion and interstitial oedema. Of these 3 scans 2 should demonstrate the pathology and 1 should be normal by comparison. Any procedures undertaken eg drainage are encouraged to be scanned and reviewed Sign off If the above are satisfactory the trainee has completed the lung and pleura FUSE ICM module 24
  • 25. vi) Programme for the vascular interventional FUSE ICM module Attend a theoretical course on vascular There are currently many excellent national interventional course on this topic and provided they include the components of the FUSE ICM syllabus they are appropriate The trainee should dedicate the equivalent This is by necessity a guide of one session per week over a projected period of 6 months Identify a FUSE ICM training supervisor This may not be an ICM clinician, but the individual should meet the standards outlined in 4 75 venous and 25 arterial scans are These scan should be contained in a logbook. undertaken These should include 25 internal jugular vein, 25 femoral vein and 25 axillary/ subclavin vein scans and 25 arterial scans. Of note, given the invasive nature of vascular access, these scans will generally be “assessments” of the vessels along their length in transverse and longitudinal planes and need not be accompanied by vessel cannulation FUSE ICM trainee and supervisor meet The logbook is reviewed and a number of cases are reviewed in more detail including At least 2 examples from at least 2 of the 3 venous sites above showing real-time vessel cannulation At least 2 examples of arterial cannulation Sign off If the above are satisfactory the trainee has completed the FUSE ICM haemodynamic module 25
  • 26. vii) Theoretical requirements and dataset for lung and pleura • Understand physics, knobology and probe selection • Functional anatomy pleura, intercostal space, pulmonary architecture and West zones • Pathophysiology of pneumothorax, pleural effusion and interstitial oedema • Describe sonoanatomy and key ultrasound signs of the 3 pathologies in particular Pathology Sonographic signs Pneumothorax Absence visceral pleura slide or comets Absence lung marking consolidation etc M-mode “stratosphere” or “seashore” sign Pleural effusion Echo free space, black Lung seen within it, possibly compressed Fibrin strands, loculation Interstitial oedema Consolidation and hepatisation “Bubbling” in parenchyma Frequent comets Ultrasound penetrates deep into lung tissue • Describe ultrasound guided intervention for the 3 pathologies including site selection, unfavourable features/ contraindications to drainage 26
  • 27. viii) Theoretical requirements and dataset for FUSE vascular interventional • Understand physics, knobology and probe selection for vascular interventional work • Describe the anatomy (including major relations) and sonoanatomy of the major veins used for vascular access including internal jugular, subclavian (and axillary) and femoral • Describe the anatomy of major superficial veins where ultrasound may assist cannulation eg antecubital fossa (PICC lines), external jugular, saphenous • Describe the anatomy of the principal arteries used for cannulation including radial, ulnar, brachial, femoral, dorsalis pedis and tibial • Describe the ultrasound features which distinguish artery from vein and vascular from non-vascular structures • Understand the selection of transverse vs longitudinal views of vessels and their practical implications during real-time cannulation • Supplement 2-D views with M-mode (eg deciding catheter size), colour Doppler and power Doppler (eg distinguishing vascular or non-vascular structures or presence of flow) • Identify major vessel pathology including low flow, absent pulsation, thrombosis, aberrant anatomy • Recognise the role of ultrasound in managing complications eg pneumothorax, (inadvertent) arterial puncture For the purposes of the logbook many scans undertaken will not demonstrate cannulation and the sequence should demonstrate: 2-D Vessel and relations in transverse Real-time cannulation and longditudinal planes, with including visualisation of rotation between the two. needle in long axis, Determination of venous vs passage of wire and arterial with compression confirmation of venous placement M-mode Determination of the vessel diameter or variability Colour and Demonstrate flow, direction and power Doppler nature eg pulsatile. Understand limitations each Please note while this module has overlap with diagnostic vascular scanning (eg assessing venous thromboembolism or carotid stenosis) this module is principally to assist in siting vascular catheters and thus termed “interventional” 27
  • 28. ix) Focused transoesophageal echocardiography (TOE) module Within cardiac UK intensive care medicine and anaesthesia there has been a strong history of delivering TOE training, culminating in the development of combined BSE and ACTA accreditation; this is still recognised as the “gold standard” of training for a comprehensive TOE examination, performed by an independent practitioner. In parallel with the development of FUSE alongside transthoracic echocardiography (TTE), a focused scanning sequence and dataset has been developed for TOE, termed FUSE TOE. Philosophy and scope of FUSE TOE It is acknowledged that in most instances TTE will form the basis of haemodynamic assessment. However, there is a place for FUSE TOE in a number of circumstances • A technically inadequate TTE study, where TOE probe position would be superior • TOE and TTE are complimentary and clinicians may derive a superior clinical assessment using both focused techniques together eg assessing the right heart with TTE and left on TOE • Repeated TOE examinations with limited focused views eg transgastric short axis allow sequential studies and thus application of TOE as a monitor eg during fluid challenge or vasoactive titration • Inadequate access to the patient eg during laparotomy where a sterile field and IPPV can can make TTE access very challenging Of note when considering FUSE TOE • Among intubated intensive care/ anaesthetised patients the issues making TOE less attractive in conscious patients (eg patient acceptability and airway protection) are largely unimportant • Many (cardiac) units have trainees on placements for periods of time insufficient to reach BSE/ACTA accreditation, but long enough to learn focused TOE. It is regretful that they are currently offered “full accreditation or nothing” • The philosophy behind all FUSE is emphasised, and applies equally to FUSE TOE ie this is a focused scan directed to specific clinical queries and is not a departmental systematic examination • Some units may decide (eg on the basis of cost, sterilisation or frequency of use) that FUSE TOE is not for them; this is a decision which individual units must make. For those units where they feel having access to FUSE TOE is desirable, this module is intended to complement their FUSE TTE and haemodynamic assessment Context and practice This module is intended to be used by a recognised supervisor who should hold BSE/ ACTA accreditation for TOE, and a trainee learning under supervision. As such this module omits the technical and governance details eg physics and knobology specific to TOE, infection control or contraindications to oesophageal intubation which are all 28
  • 29. adequately described in the ACTA/ BSE syllabus and guidelines (http:// www.bsecho.org/index.php? option=com_docman&task=doc_download&gid=190) and should be part of the institution’s practice and governance arrangements. Rather this module describes a truncated examination sequence which may be applied, with or without TTE, to answer focused clinical questions, under close supervision of an accredited expert. FUSE TOE is not intended to provide more detailed information beyond the practitioner’s scope of practice eg interrogating a prosthetic replacement mitral valve, where specialist support and input are clearly mandatory. 29
  • 30. The FUSE TOE dataset The structure below is adapted from the trans-thoracic dataset where the use of CFD and spectral Doppler is assumed to be primarily to interrogate valves and determine comparable parameters (eg VTI or a peak gradient) to TTE. The views are described in their typical sequence from insertion so the examination may be performed sequentially and rapidly. TOE View (inc Modality Structures Measure Calculations multiplane assessed angle setting) Mid- 2-D Aortic valve Poor view Qualitative assess oesophageal M-mode movement, (perpendicular) for AS/ AR aortic valve CFD ascending aorta. gradients Assess TR, RVSP, (short axis) May allow window If feasible alternative to PA pressures 40- 60o on atria, TV, PV TTE AV short axis Mid- 2-D, M- Aortic valve, LVOT, Poor view Qualitative assess oesophageal mode, ascending aorta (perpendicular) for AS/ AR aortic valve CFD gradients (long axis) 110- 140o Mid- 2-D Left and right LVED and S D, FS, FAC, EF oesphageal M-mode cardiac chambers LVES and D A (Simpson’s) 4 chamber CFD size, contractility, LVED and S V RVSP 0o Spectral MV, TV Peak and mean Doppler gradients Mid- 2-D LVOT and Aortic Peak and mean SV oesophageal M-mode valve gradients and VTI, Assess AS/AR 5 chamber CFD and LVOT dimensions 0o Doppler Mid- 2-D LV and LA function As for 4 chamber FS, FAC, oesophageal M-mode and dimensions, esp Combine 4 chamber long-axis CFD apex and anterior/ bi-plane EF 2 chamber Doppler inferior, LA 90o appendage Transgastric 2-D LV dimensions, As 4 chamber FS short axis (mid- M-mode function and preload FAC papillary) Pericardial effusion? 0o Transgastric 2-D LV dimensions, As above FS long axis M-mode function, preload FAC 2 chamber and pericardial EF 90o effusion (anterior and inferior LV, LA appendage) 30
  • 31. Documentation control Produced by the FUSE ICM writing group Dr Craig Morris, Derby cmorris@doctors.org.uk Dr Conn Russell, Belfast Dr Justiaan Swanvelder, Leicester Dr Sean Bennett, Hull Dr Steven Burn, Derby In consultation with the Intensive Care Society Council, Royal College of Emergency Medicine Ultrasound Training Subcommittee, National Point of Care Ultrasound (NPOCUS) group Date of writing April 2009 Date for 1st review April 2012 31