Hemodynamic volume assessment by bedside ultrasound. IVC heart lung is three organs that you should interpret add on to clinical context.
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1. Distend > 18%
at inspiration in
mechanical ventilation
(Distesibility index)
Collapse > 50%
Inspiration in spontaneous breathing
(collabsibility index)
Rigid or
collapse < 50%
at inspiration phase
Volume responsive (Low CVP) Volume Non responsive (High CVP)
Small diameter at a glance Large, non collapse with
dilate hepatic vein at a glance
50%
18%
Decrease end systolic
LV area (Kissing LV)
A line
Reflect Air > Fluid
both lungs
B line
Reflect Air > Fluid
both lungs
Normal or increase end
systolic LV area
Heart
Distend < 18%
Distensibility index
d(IVC)= IVCmax – IVCmin / IVCmin
Collapsibility index
d(IVC)= IVCmax – IVCmin / IVCmax
IVC
(Inferior vena cava)
Lung
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