rush protocol rapid ultrasound for shock and hypotension
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RUSH PROTOCOL Rapid Ultrasound for Shock and Hypotension. Ultrasound (US)-- “resuscitative.”. Patients with hypotension or shock Ultrasound is ideal for the evaluation of critically ill patients in shock, and ACEP guidelines - PowerPoint PPT PresentationTRANSCRIPT
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RUSH PROTOCOL Rapid Ultrasound for Shock and Hypotension
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Ultrasound (US)-- “resuscitative.”Patients with hypotension or shock Ultrasound is ideal for the evaluation of critically ill
patients in shock, and ACEP guidelines Direct visualization of pathology and differentiation of
shock states.
The RUSH Protocol first introduced in 2006 by Weingart SD et al, and later published in 2009. It was designed to be a rapid and easy to perform US protocol (<2 min) by most emergency physicians.
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What US probes do you need for the RUSH protocol?Phased-array probe (3.5 - 5 MHz)Linear probe (7.5 – 10 MHz)What are the components of the RUSH protocol?The components of the RUSH exam are: Heart, Inferior
vena cava (IVC), Morrison’s/FAST abdominal views, Aorta, and Pneumothorax (HI-MAP).
A more simple method is to think of:Pump (Heart): Tamponade, LVEF, and RV sizeTank (Intravascular): IVC, thoracic and abdominal
compartmentsPipes (Large Arteries/Veins): Aorta and femoral/popliteal
veins
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Summary TableResuscitation 2013 conference
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How do you evaluate the PUMP?Component: Heart (parasternal long axis view)Probe: Phased array probe (3.5 - 5 MHz)Location: Just left of the sternum, 3rd and 4th intercostal
spaceFinding: Pericardial effusion (tamponade)
Small effusions are best identified posterior to left ventricle (dependent portion of pericardium)
Can find compression of the right ventricle (Singh S et al Sens 92%, Spec 100%, PPV 100%)
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Finding: Left ventricular ejection fraction estimationLook at anterior leaflet of mitral valve, which should normally
touch septum<30% difference of LV size between systole and diastole
indicates severely decreased LV functionFinding: Right ventricular strain
Normally RV should be 60% of LV size (If RV = LV size, this is abnormal)
Lodato JC et al: If McConnell Sign (reduction in RV free wall motility with sparing of the apex) is present, specificity for PE is 96%, but sensitivity is 16%.
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Component: Heart (Subxiphoid)Probe: Phased array probe (3.5 - 5 MHz)Location: Subxiphoid, point toward left scapula
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How do you evaluate the TANK?Component: Inferior Vena CavaProbe: Phased array probe (3.5 - 5 MHz)Location: Subxiphoid, slide to patient's rightFinding: Intravascular volume estimation
IVC <2 cm in diameter and inspiratory collapse greater than 50% approximates CVP <10 cmH20
IVC >2 cm in diameter and inspiratory collapse less than 50% approximates CVP >10 cmH20
Not applicable for intubated patients. Spontaneously breathing patients create negative intrathoracic pressure. ventilated patients create positive intrathoracic pressure.
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Component: FAST abdominal viewsProbe: Phased array probe (3.5 - 5 MHz)Location: Hepatorenal recess, Splenorenal recess, and
bladderFinding: Internal blood loss
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Component: Pneumothorax Probe: Linear probe (7.5 – 10 MHz)Location: Midclavicular line, 3rd – 5th intercostal spaceFinding: Intrathoracic compromise
Normal: Should see lung sliding and comet tails. M-Mode will look like "waves on a beach".
Pneumothorax present: NO lung sliding and NO comet tails. M-Mode will look like a "bar graph" (no beach).
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How do you evaluate the PIPES?Component: AortaProbe: Phased array probe (3.5 - 5 MHz)Location: Longitudinal and transverse views of aorta at 4
levels (infracardiac, suprarenal, infrarenal, and right at the iliac bifurcation)Measurement >3 cm is abnormal. If >5 cm consider
ruptured AAA if no other cause found.Most AAAs located below the renal arteries
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RUSH protocol to medical patients
EFAST exam to trauma patients.