findings on bedside ultrasound that change patient management · abscess drainage, lp. even...
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“You saw what?”Findings on Bedside Ultrasound That
Change Patient ManagementNicolas Denne MD, FACEP, RDMS
Associate Professor of Emergency Medicine
Clinical Ultrasound Fellowship Director
West Virginia University
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Disclosures: GE Consultant
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Objectives:
• To discuss the literature that supports bedside imaging
• To discuss common bedside ultrasound exams
• To discuss pathology easily identified on those exams
• To spark an interest in bedside imaging
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Bedside Ultrasound
Advantages• Safer procedures• Rapid• Bedside• Repeatable• No radiation or contrast• More accurate, timely
diagnoses
Disadvantages
• User dependent
• Image acquisition may be limited
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Support for Bedside Ultrasound:The Evidence
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American Medical Association
• AMA HR. 802 Passed in 1999
(1) AMA affirms that ultrasound imaging is within the scope of practice of appropriately trained physicians;
(2) AMA policy on ultrasound acknowledges that broad and diverse use and application of ultrasound imaging technologies exist in medical practice;
(3) AMA policy on ultrasound imaging affirms that privileging of the physician to perform ultrasound imaging procedures in a hospital setting should be a function of hospital medical staffs and should be specifically delineated on the Department's Delineation of Privileges form; and
(4) AMA policy on ultrasound imaging states that each hospital medical staff should review and approve criteria for granting ultrasound privileges based upon background and training for the use of ultrasound technology and strongly recommends that these criteria are in accordance with recommended training and education standards developed by each physician's respective specialty.
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American College of Radiology• Practice Parameter for Performing and
Interpreting Diagnostic Ultrasound Examinations. 2017.
• “…physicians should be able to provide evidence of the training and competence needed to perform diagnostic ultrasound examinations successfully.”
ACR-SPR-SRU Practice Parameter for Performing and Interpreting Diagnostic Ultrasound Examinations. 2017. https://www.acr.org/-/media/ACR/Files/PracticeParameters/us-perf-
interpret.pdf
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American College of Emergency Physicians
• ACEP Policy Statement Ultrasound Guidelines: Emergency, Point-of-care, and Clinical Ultrasound Guidelines in Medicine Ann Emerg Med. 2017
• “It (EUS,POCUS) is utilized for diagnosis of any emergency condition, resuscitation of the acutely ill, critically ill or injured, guidance of procedures, monitoring of certain pathologic states and as an adjunct to therapy.”
ACEP Policy Statement Ultrasound Guidelines: Emergency, Point-of-care, and Clinical Ultrasound Guidelines in Medicine Ann Emerg Med. 2017 May;69(5):e27-e54. doi:
10.1016/j.annemergmed.2016.08.457
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POCUS for Hospitalists• Diagnostic PoCUS for Hospitalists. Sonji et al.J.
Hosp. Med 2014
• Applications: Ascites, AAA, Hydronephrosis, Heart, Lungs (PTX, PNA, effusion, edema), Venous (volume, thromboembolism)
• “Hospitalists and other frontline providers, as well as physician trainees at various levels of training, have moderate to excellent diagnostic accuracy after brief training programs for most of these applications.”
Soni NJ, Lucas BP, PoCUS for Hospitalists. J. Hosp. Med 2015;2;120-124. doi:10.1002/jhm.2285
• “…point-of-care ultrasound exams are aimed at making specific diagnoses for well-defined clinical scenarios.”
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A Step Further…
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The Society of Hospital Medicine• Point-of-Care Ultrasound for Hospitalists: A Position
Statement of the Society of Hospital Medicine. 2019. Soni NJ et al
• “The purpose of this position statement is to inform a broad audience about how hospitalists are using diagnostic and procedural applications of POCUS.”
• “…is intended to provide guidance on the safe and effective use of POCUS by the hospitalists who use it and the administrators who oversee its use.”
Soni NJ, Schnobrich D, Benji K. Mathews, MD, Tierney DM, Trevor P. Jensen, MD, MS, Dancel R, Joel Cho, MD, RDMS, RDC, Renee K. Dversdal, MD, Gregory Mints, MD, Anjali Bhagra, MD, Kreegan Reierson, MD, Linda M. Kurian, MD, Gigi Y. Liu, MD, MSc, Candotti C, Brandon Boesch, DO, LoPresti CM, Joshua Lenchus, DO, Tanping Wong, MD, Gordon Johnson, MD, Anna M. Maw, MD, MS, Ricardo Franco-Sadud, MD, Lucas
BP, Point-of-Care Ultrasound for Hospitalists: A Position Statement of the Society of Hospital Medicine. Published Online Only January 2, 2019. doi: 10.12788/jhm.3079
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Applications in Position Statement
Soni NJ et.al. Point-of-Care Ultrasound for Hospitalists: A Position Statement of the Society of Hospital Medicine. Published Online Only January 2, 2019. doi: 10.12788/jhm.3079
• Cardiac• LV and RV assessment, Atrial size, CVP (IJ/IVC), Pericardial Effusion, Hypertrophy, Gross Valvular
Abnormalities
• Pulmonary• Effusions, Alveolar and Interstitial Syndromes, PTX
• Abdominal • FF, Kidney Size, Hydronephrosis, Bladder Volume, Gallbladder, Spleen and Liver Size
• Vascular• DVT, AAA
• MSK• Cellulitis, Abscess, Joint Effusions, Fractures
• Procedural• Paracentesis, Thoracentisis, Central Lines, Peripheral Lines, Arterial Lines, Arthrocentesis,
Abscess Drainage, LP
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Even Further…
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The Evidence for POCUS
• A review of lawsuits related to point-of-care emergency ultrasound applications. Stolz L et al. West J Emerg Med. 2014
• Total of 5 cases related to POCUS
• “There were no reported cases of failure to interpret or misdiagnoses.”
• “All reported decisions alleged a failure to perform an ultrasound study or a failure to perform it in a timely manner.”
Stolz L, O'Brien KM, Miller ML, Winters-Brown ND, Blaivas M, Adhikari S. A review of lawsuits related to point-of-care emergency ultrasound applications. West J Emerg Med. 2014;16(1):1–4.
doi:10.5811/westjem.2014.11.23592
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How Can POCUS Help?
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Case #1
• 74 yo male with shortness of breath
• PMHx of CAD, CHF, COPD, HTN, DM
• Vitals: • HR 118
• BP 140/85
• RR 32
• Sat 86% on 15L via Non rebreather Mask
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POCUS Echo Questions
• Is there squeeze or not?
• How is the global function?
• Is there right heart strain?
• Is there a pericardial effusion?
• Are there obvious structural abnormalities?
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Differential Diagnosis in Dyspnea
• ACS
• Asthma/COPD exacerbation
• CHF exacerbation
• PE
• Pleural effusions
• Pericardial effusion
• Pneumonia
• Cardiomyopathy
• Pneumothorax
• Allergic response
• Anemia
• Anxiety
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Pocus Affected Differential Diagnosis in Dyspnea
• ACS
• Asthma/COPD exacerbation
• CHF exacerbation
• PE
• Pleural effusions
• Pericardial effusion
• Pneumonia
• Cardiomyopathy
• Pneumothorax
• Allergic response
• Anemia
• Anxiety
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Bedside Echo
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American College of Echocardiography
• Focused cardiac ultrasound in the emergent setting: a consensus statement of the American Society of Echocardiography and American College of Emergency Physicians. Labovitz AJ et al J Am Soc Echocardiogr 2010
• “…focused cardiac ultrasound has become a fundamental tool to expedite the diagnostic evaluation of the patient at the bedside and to initiate emergent treatment…”
Labovitz AJ, Noble VE, Bierig M, et al. Focused cardiac ultrasound in the emergent setting: a consensus statement of the American Society of Echocardiography and American
College of Emergency Physicians. J Am Soc Echocardiogr. 2010;23:1225-30.
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Evidence• Diagnostic performance of cardiopulmonary ultrasound
performed by the emergency physician in the management of acute dyspnea. Gallard et al. Am J Emerg Med 2014
• 130 patients analyzed with dyspnea
• Standard of Care performed (EKG, XR, Labs). Diagnosis based on 2 separate independent physicians
• Based on initial US, physician was asked diagnosis. • CHF accuracy of 90%• PNA or Pleural effusion accuracy of 86%• COPD/Asthma exacerbation accuracy of 96%
Gallard et al. Diagnostic performance of cardiopulmonary ultrasound performed by the emergency physician in the management of acute dyspnea. Am J Emerg Med.
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Evidence• Accuracy of Hospitalist‐Performed HCUE. Lucas
et al. J. Hosp. Med 2009
• 314 patients compared standard echo to POC echo
• 27 hour course for hospitalist for LV systolic function, Severe MV regurg, LA enlargement, LV hypertrophy, Pericardial effusion, IVC dilatation
• “Accuracy of POC was moderate to excellent in all areas evaluated”
Lucas et al. Accuracy of Hospitalist‐Performed HCUE. J. Hosp. Med 2009
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The Exam
• 4 views using phased array or low frequency transducer
• Work in a clockwise fashion
• Left lateral decubitus may aid in views
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The Exam
• 4 views using phased array or low frequency transducer
• Work in a clockwise fashion
• Left lateral decubitus may aid in views
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To Know Abnormal…
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To Know Abnormal…
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Our Patient
• 74 yo male with shortness of breath
• PMHx of CAD, CHF, COPD, HTN, DM
• Vitals: • HR 118• BP 140/85• RR 32• Sat 86% on 15L via Non
rebreather Mask
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Low EFNormal Reduced EF
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Low EFNormal Reduced EF
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Low EF
• Pearls and Pitfalls• Body habitus, patient
positioning may limit views
• Tachycardia, dysrhythmia and bradycardia can cause over/under-estimation of EF
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Lung Ultrasound
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POCUS Lung Questions?
• Is there sliding?
• Are there B-Lines?
• Is there an effusion?
• Are there consolidations?
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Evidence• Diagnostic Accuracy of Point-of-Care Lung
Ultrasonography and Chest Radiography in Adults With Symptoms Suggestive of Acute Decompensated Heart Failure: A Systematic Review and Meta-analysis. Maw AM et al. JAMA Six studies with total of 1827 patients
• LUS 88% sensitive and 90% specific
• CXR 73% sensitive and 90% specific
• “The findings suggest that LUS is more sensitive than CXR in detecting pulmonary edema in ADHF”
Maw AM et al. Diagnostic Accuracy of Point-of-Care Lung Ultrasonography and Chest Radiography in Adults With Symptoms Suggestive of Acute Decompensated Heart Failure: A Systematic Review and
Meta-analysis. JAMA Netw Open. 2019
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Lung Ultrasound• Low frequency transducer
• Depth dependent on what you are looking to find
• Divide the anterior and posterior thorax into 4 quadrants each
Gargani L, Volpicelli G. How I do it: lung ultrasound. Cardiovasc Ultrasound. 2014;12:25. Published 2014 Jul 4. doi:10.1186/1476-7120-12-25
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Pulmonary EdemaNormal Edema
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Pulmonary EdemaNormal Edema
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Pulmonary Edema
• Pearls and Pitfalls• Look in several lung
fields
• Look for pleural effusions
• Must use in context with patient presentation
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Take Home Points Case 1
• POCUS of heart and lungs can provide critical information in the evaluation of the dyspneic patient
• Focused echo evaluating global function is within the scope of practice for Hospitalists
• Lung ultrasound can be quickly and accurately be used to evaluate for alveolar fluid
• Symmetric B lines = Edema
• Patchy or Focal B Lines = Infectious/Inflammatory
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Case #2
• 54 yo male with dyspnea on exertion and right leg pain with ambulation
• PMHx of HTN, Asthma, DVT/PE, GI bleed
• Vitals: • HR 104• BP 108/68• RR 21• Sat 90% on RA
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POCUS Echo Questions
• Is there squeeze or not?
• How is the global function?
• Is there right heart strain?
• Is there a pericardial effusion?
• Are there obvious structural abnormalities?
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POCUS Echo Questions
• Is there squeeze or not?
• How is the global function?
• Is there right heart strain?
• Is there a pericardial effusion?
• Are there obvious structural abnormalities?
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Evidence• Diagnostic Accuracy of Right Ventricular Dysfunction
Markers in Normotensive Emergency Department Patients With Acute Pulmonary Embolism. Weekes, Anthony J. et al. Annals of Emergency Medicine
• Prospective observational study Investigators were blinded• 116 patient’s with confirmed PE had focused US looking for RV strain• 5 investigators (1 Staff US director, 1 US Fellow, 3 EM Residents)• 100% Sensitivity and 99% Specificity for RV strain compared to
comprehensive echo
• “Goal-directed echocardiography was highly accurate for early severe right ventricular dysfunction identification and pulmonary embolism risk-stratification.”
Weekes, Anthony J. et al. Diagnostic Accuracy of Right Ventricular Dysfunction Markers in Normotensive Emergency Department Patients With Acute Pulmonary Embolism.
Annals of Emergency Medicine , Volume 68 , Issue 3 , 277 – 291
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Evidence• Diagnostic Accuracy of Point-of-Care Ultrasound Performed by
Pulmonary Critical Care Physicians for Right Ventricle Assessment in Patients With Acute Pulmonary Embolism. Filopei J. et al. Crit Care Med. 2017
• Prospective observational study• 154 focused echo’s• CC Fellows were 83% sensitive and specific, Staff was 87% sensitive and
specific at diagnosing RV enlargement compared to comprehensive echo
• Median time to get comprehensive echo was 21 hours 18 minutes• “Screening for right ventricular dysfunction using goal-directed
echocardiography can and should be performed by pulmonary critical care physicians in patients with acute pulmonary embolism”.
Filopei J. et al. Diagnostic Accuracy of Point-of-Care Ultrasound Performed by Pulmonary Critical Care Physicians for Right Ventricle Assessment in Patients With Acute Pulmonary Embolism. Crit Care Med. 2017
Dec;45(12):2040-2045. doi: 10.1097/CCM.0000000000002723.
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Sometimes We Get Lucky
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RV Strain
• RV enlargement to >2/3 size of the LV
• Compression of the septal wall (D Sign)
• Septal dyssynchrony
• Akinesis of the RV with hyper-dynamic apex (McConnell’s Sign)
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RV StrainNormal RV Strain
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RV StrainNormal RV Strain
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RV StrainNormal RV Strain
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RV Strain
• Pearls and Pitfalls:
• Absence of RV dilation does not exclude PE
• Mimicks:• Pulmonary HTN
• RV hypertrophy• RA dilation
• LBBB
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Extremity Ultrasound for DVT
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Questions for LE DVT Ultrasound
• Does the vein compress?
• Is there visible thrombosis?
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Evidence• Compression ultrasonography of the lower extremity
with portable vascular ultrasonography can accurately detect deep venous thrombosis in the emergency department. Crisp JG et al. Ann Emerg Med 2010
• Prospective, cross-sectional study for proximal DVT• 47 physicians underwent a 10 minute training session• 199 Bedside 2 point compression studies performed
compared to Radiology performed DVT study • 45 true positives, 1 false positive (had a DVT 1 wk later), 153
true negatives• 100% sensitivity and 99% specificity
Crisp JG, Lovato LM, Jang TB (2010) Compression ultrasonography of the lower extremity with portable vascular ultrasonography can accurately detect deep venous thrombosis in the emergency department. Ann Emerg Med
56:601–610
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Evidence• Comparison between two-point and three-point compression
ultrasound for the diagnosis of deep vein thrombosis. Zuker-Herman R. et al. J Thromb Thrombolysis 2018
• 195 patients enrolled and 48 were found to have DVT by complete duplex
• 2 point• sensitivity 82.76%, specificity 98.52%
• 3 point• sensitivity 90.57%, specificity 98.52%
• “The 3PCUS examination preformed in the ED, is a noninvasive, accurate and quick diagnostic test for evaluation of patients presenting with signs and symptoms suggestive of a DVT.”
Zuker-Herman R. et al. Comparison between two-point and three-point compression ultrasound for the diagnosis of deep vein thrombosis. J Thromb Thrombolysis. 2018 Jan;45(1):99-105. doi: 10.1007/s11239-
017-1595-9.
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Exam for LE DVT
• Linear or Low Frequency Transducer
• 3-point compression study• Great Saphenous and
Common Femoral Junction
• Deep Femoral and (Superficial) Femoral Junction
• Popliteal Vein
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ThromboembolismNormal DVT
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ThromboembolismNormal DVT
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Thromboembolism
• Pearls and Pitfalls:• Find the artery!
• Mimicks• Lymph Nodes
• Superficial Thrombophlebitis
• Always get enough depth
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Take Home Points Case 2
• RV strain can be accurately and rapidly diagnosed at the bedside to guide treatment
• Use POCUS for DVT within the context of patient presentation• 2-point and 3-point compression studies miss calf DVT
• In high risk, high suspicion patient, DVT can be ruled in but not out with 3-point study
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Case #3
• 84 yo female with dyspnea and syncope
• PMHx of HTN, Hypothyroidism, hyperlipidemia
• Vitals: • HR 98
• BP 118/88
• RR 22
• Sat 93% on RA
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POCUS Echo Questions
• Is there squeeze or not?
• How is the global function?
• Is there right heart strain?
• Is there a pericardial effusion?
• Are there obvious structural abnormalities?
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Evidence• Bedside echocardiography by emergency
physicians. Mandavia DP et al. Ann Emerg Med.• Physicians had a 16 hour course with 1 hour lecture
and 4 hour lab on echo• 515 “high risk” patients, 478 studies were
considered adequate• 103 effusions identified• Sensitivity was 96% and Specificity was 98% for
diagnosis of effusion
Mandavia DP, Hoffner RJ, Mahaney K, Henderson SO. Bedside echocardiography by emergency physicians. Ann Emerg Med. 2001;38:377–82.
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Pericardial Effusion• Use all 4 views to evaluate
• Simple fluid is hypoechoic• Uremic effusion• Malignant effusion• Pericarditis• Early blood
• Complex fluid will have hypoechoic areas with hyperechoic inclusions• Clotted blood• Purulent effusions
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Pericardial EffusionNormal Effusion
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Pericardial EffusionNormal Effusion
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Tamponade
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Pericardial Effusion• Pearls and Pitfalls:
• Tamponade is a clinical diagnosis!
• Mimics:• Prominent epicardial fat
• Pleural Effusion
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Take Home Points Case 3
• Pericardial effusion can be accurately and rapidly identified on bedside ultrasound
• Tamponade is a clinical diagnosis, but ultrasound can indicate impending cardiovascular collapse
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Case #4
• 58 yo female with fatigue, dizziness, confusion
• PMHx of HTN, DM, CAD, Hyperlipidemia, COPD
• Vitals: • HR 122
• BP 80/42
• RR 26
• Sat 91% on 2L NC
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Undifferentiated Shock Ultrasound
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Etiologies of Shock
• Cardiogenic• Pump failure
• Hypovolemic/hemorrhagic• Blood loss (thoracoabd, GI, AAA), fluid loss
• Distributive• Anaphylactic, neurogenic, sepsis*
• Obstructive• Cardiac tamponade, PE, tension ptx
• Endocrine
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Etiologies of Shock
• Cardiogenic• Pump failure
• Hypovolemic/hemorrhagic• Blood loss (thoracoabdominal, GI, AAA), fluid loss
• Distributive• Anaphylactic, neurogenic, sepsis
• Obstructive• Cardiac tamponade, PE, tension ptx
• Endocrine
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Undifferentiated Shock Questions?• How is the global heart function?
• Is there right ventricular heart strain?
• Is there a pericardial effusion?
• Are there obvious cardiac structural abnormalities?
• Is the IVC collapsed?
• Is there an AAA?
• Is there FF in abdomen or thorax?
• Is there lung sliding?
• Do the proximal deep veins compress?
• Is there an obvious infectious source?
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RUSH Exam• The RUSH exam: Rapid Ultrasound in SHock in the
evaluation of the critically lll. Perera P et al. EmergMed Clin North Am. 2010
• In undifferentiated hypotension obtain the following: Heart, IVC, Aorta, RUQ, LUQ, Pelvis, Lungs, LE veins
• “The RUSH exam, presented in this article, represents a comprehensive algorithm for the integration of bedside ultrasound into the care of the patient in shock.”
Perera P et.al. The RUSH exam: Rapid Ultrasound in SHock in the evaluation of the critically lll. Emerg Med Clin North Am. 2010 Feb;28(1):29-56, vii. doi: 10.1016/j.emc.2009.09.010
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RUSH Exam
• Focuses on 3 main areas:• Pump
• Contractility, Chamber Size, Effusion, RV Strain
• Tank• IVC, Peritoneal Fluid, Thoracic Fluid/PTX/Pulmonary Edema
• Pipes• Aorta and DVT
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Evidence• Bedside Ultrasound Reduces Diagnostic Uncertainty and
Guides Resuscitation in Patients With Undifferentiated Hypotension. Shokoohi H, et al. Crit Care Med. 2015
• Prospective observational study• 118 patients evaluated by ultrasound trained physicians
• “Clinical management involving the early use of ultrasound in patients with hypotension accurately guides diagnosis, significantly reduces physicians' diagnostic uncertainty, and substantially changes management and resource utilization…”
Shokoohi H, et al. Bedside Ultrasound Reduces Diagnostic Uncertainty and Guides Resuscitation in Patients With Undifferentiated Hypotension.Crit Care Med. 2015 Dec;43(12):2562-9. doi:
10.1097/CCM.0000000000001285.
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IVC Exam• Low frequency transducer
• Mid epigastrium or right lateral view with indicator to the patient head
• Collapsing IVC can indicate hypovolemia
• Dilated IVC can indicate fluid overload
• Postulated that IVC diameter is indirect measurement of CVP which can be used to assess fluid responsiveness.
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Evidence for IVC Guided Management
• Barbier C, Loubieres Y, Schmit C et al. Respiratory changes in inferior vena cava diameter are helpful in predicting fluid responsiveness in ventilated septic patients. Intensive Care Med 2004; 30:1740-1746.
• Prospective clinical study• 23 patients in ICU on PP ventilation• Dispensability of IVC and Cardiac index measured before
and after volume expansion• At 18% dIVC CI improved by 15%
• Feissel M, Michard F, Faller JP et al. The respiratory variation in inferior vena cava diameter as a guide to fluid therapy. Intensive Care Med 2004; 30:1834-37.
• Prospective clinical study• 16 patient’s responded to bolus of hydroxyethylstarch by
increasing cardiac index by 15%
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Problem with IVC Guided Management• Marik PE, Cavallazzi R. Does the Central Venous Pressure (CVP)
predict fluid responsiveness: An update meta-analysis and a plea for some common sense. Crit Care Med 2013; 41:1774-81.
• 43 studies reviewed• “There are no data to support the widespread practice of using
central venous pressure to guide fluid therapy. This approach to fluid resuscitation should be abandoned.”
• Eskesen TG, Wetterslev M, Perner A. Systematic review including re-analyses of 1148 individual data sets of central venous pressure as a predictor of fluid responsiveness. Intensive Care Med 2015; 42:324-32.
• 51 studies reviewed• 1148 data sets • Zero predictive values were above 66% for any CVPs from 0 to 20
mmHg.
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IVC Debate
• Surviving Sepsis Campaign no longer includes recommendations on CVP (Prior was 8-12mmHg)
• Evidence based look at IVC/CVP: https://emcrit.org/isepsis/isepsis-vena-caval-ultrasonography-just-dont/
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Undifferentiated Shock Questions?• How is the global heart function?
• Is there right ventricular heart strain?
• Is there a pericardial effusion?
• Are there obvious cardiac structural abnormalities?
• Is the IVC collapsed?
• Is there an AAA?
• Is there FF in abdomen or thorax?
• Is there lung sliding?
• Do the proximal deep veins compress?
• Is there an obvious infectious source?
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US for Shock
• Heart• Global Function, Strain, Chamber Size, Effusion, Aortic Root,
Obvious Valvular Pathology
• Abdomen• IVC, FF, AAA, Dissection
• Thorax• PTX, Effusions
• Infectious• PNA, Endocarditis, Cholecystitis, UTI/Hydronephrosis,
Cellulitis
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CardiomyopathyNormal Hypertrophic Cardiomyopathy
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DissectionNormal Dissection Flap
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AAANormal AAA
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HemoperitoneumNormal Free Fluid
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HemoperitoneumNormal Free Fluid
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PneumothoraxNormal PTX
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PneumoniaNormal Infiltrate
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EndocarditisTricuspid Vegetation Aortic Vegetation
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RUQNormal Cholecystitis
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HydronephrosisNormal Hydronephrosis
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Skin and Soft TissueNormal Skin Necrotizing Fasciitis
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Undifferentiated Shock
• Pearls and Pitfalls: • Let clinical context
guide the exam
• Not all FF is blood
• Not all AAA’s are ruptured
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Take Home Points Case 4
• POCUS can be used to guide evaluation and management of undifferentiated shock
• CVP to guide fluid management is not currently supported by the literature; therefore IVC measurement as a sole guide to fluid management cannot be recommended
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Conclusions
• The sicker the patient, the more useful POCUS can be at guiding evaluation and management
• Ultrasound is user dependent and skill is acquired through practice
• Practice often with normal exams or on individuals with known diagnoses to build skills for critical moments . . .
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References1. ACR-SPR-SRU Practice Parameter for Performing and Interpreting Diagnostic Ultrasound Examinations. 2017. https://www.acr.org/-
/media/ACR/Files/PracticeParameters/us-perf-interpret.pdf
2. ACEP Policy Statement Ultrasound Guidelines: Emergency, Point-of-care, and Clinical Ultrasound Guidelines in Medicine Ann EmergMed. 2017 May;69(5):e27-e54. doi: 10.1016/j.annemergmed.2016.08.457
3. Soni NJ, Lucas BP, PoCUS for Hospitalists. J. Hosp. Med 2015;2;120-124. doi:10.1002/jhm.2285
4. Soni NJ, Schnobrich D, Benji K. Mathews, MD, Tierney DM, Trevor P. Jensen, MD, MS, Dancel R, Joel Cho, MD, RDMS, RDC, Renee K. Dversdal, MD, Gregory Mints, MD, Anjali Bhagra, MD, Kreegan Reierson, MD, Linda M. Kurian, MD, Gigi Y. Liu, MD, MSc, Candotti C, Brandon Boesch, DO, LoPresti CM, Joshua Lenchus, DO, Tanping Wong, MD, Gordon Johnson, MD, Anna M. Maw, MD, MS, Ricardo Franco-Sadud, MD, Lucas BP, Point-of-Care Ultrasound for Hospitalists: A Position Statement of the Society of Hospital Medicine. Published Online Only January 2, 2019. doi: 10.12788/jhm.3079H
5. Stolz L, O'Brien KM, Miller ML, Winters-Brown ND, Blaivas M, Adhikari S. A review of lawsuits related to point-of-care emergency ultrasound applications. West J Emerg Med. 2014;16(1):1–4. doi:10.5811/westjem.2014.11.23592
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17. Shokoohi H1, Boniface KS, Pourmand A, Liu YT, Davison DL, Hawkins KD, Buhumaid RE, Salimian M, Yadav K.Bedside Ultrasound Reduces Diagnostic Uncertainty and Guides Resuscitation in Patients With Undifferentiated Hypotension.Crit Care Med. 2015 Dec;43(12):2562-9. doi: 10.1097/CCM.0000000000001285.
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References18. https://emcrit.org/isepsis/isepsis-vena-caval-ultrasonography-just-dont/
19. http://www.survivingsepsis.org
20. Barbier C, Loubieres Y, Schmit C et al. Respiratory changes in inferior vena cava diameter are helpful in predicting fluid responsiveness in ventilated septic patients. Intensive Care Med 2004; 30:1740-1746.
21. Feissel M, Michard F, Faller JP et al. The respiratory variation in inferior vena cava diameter as a guide to fluid therapy. Intensive Care Med 2004; 30:1834-37.
22. Marik PE, Cavallazzi R. Does the Central Venous Pressure (CVP) predict fluid responsiveness: An update meta-analysis and a plea for some common sense. Crit Care Med 2013; 41:1774-81.
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24. Special thanks to Dr. Joseph Minardi (Twitter @jminardi21) (YouTube: Joseph Minardi)