Edwards HemoSphere

HemoSphere Advanced Monitor 10 Monitoring with the HemoSphere Pressure Cable
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When using the FloTrac IQ sensor, the patient’s existing arterial pressure waveform is used to continuously
measure, the maximal slope of the arterial pressure upstroke (dP/dt), and dynamic arterial elastance (Ea
dyn
).
dP/dt is a sensitive measure of the changes in the contractility of the left ventricle. Ea
dyn
is a measure of the
afterload to the left ventricle by the arterial system (arterial elastance) relative to left ventricular elastance
(dynamic arterial elastance). See Acumen Hypotension Probability Indicator Software Feature on page 150 for more
information on the FloTrac IQ sensor and the hypotension probability indicator (HPI) feature. Activation
of the HPI feature is only available in certain areas. Please contact your local Edwards representative for
more information on enabling this advanced feature.
Available parameters using FloTrac technology include cardiac output (CO), cardiac index (CI), stroke
volume (SV), stroke volume index (SVI), stroke volume variation (SVV), systolic pressure (SYS), diastolic
pressure (DIA), mean arterial pressure (MAP), and pulse rate (PR). When using a FloTrac IQ sensor and the
HPI feature is activated, additional available parameters include dynamic arterial elastance (Ea
dyn
), maximal
slope of arterial pressure upstroke (dP/dt), and hypotension probability parameter (P(
↓BP)). When the
FloTrac or FloTrac IQ sensor is paired with the patient’s central venous pressure (CVP), systemic vascular
resistance (SVR) and systemic vascular resistance index (SVRI) are also available.
CAUTION The effectiveness of FT-CO measurements in pediatric patients has not been evaluated.
Inaccurate FT-CO measurements can be caused by factors such as:
• Improperly zeroed and/or leveled sensor/transducer
• Over- or under-damped pressure lines
• Excessive variations in blood pressure. Some conditions that cause BP variations
include, but are not limited to:
* Intra-aortic balloon pumps
• Any clinical situation where the arterial pressure is deemed inaccurate or not
representative of aortic pressure, including but not limited to:
* Extreme peripheral vasoconstriction which results in a compromised radial
arterial pressure waveform
* Hyperdynamic conditions as seen in post liver transplant
• Excessive patient movement
• Electrocautery or electrosurgical unit interference
Aortic valve regurgitation may cause an over estimation of Stroke Volume / Cardiac
Output calculated depending on the amount of valvular disease and the volume lost
back into the left ventricle.
10.3.1 Connect FloTrac or FloTrac IQ Sensor
1 Connect one end of the pressure cable to the HemoSphere advanced monitor.
2 To de-air and prime I.V. bag and FloTrac or FloTrac IQ sensor: Invert normal saline I.V. bag
(anticoagulation per institution policy). Spike I.V. bag with fluid administration set, keeping drip
chamber upright. While keeping I.V. bag inverted, gently squeeze air out of bag with one hand
while pulling flush tab (Snap-tab) with the other hand until air is emptied from I.V. bag and drip
chamber is filled half-way.
3 Insert I.V. bag into the Pressure Bag and hang on I.V. pole (DO NOT INFLATE).
Status = Released Printed Date: 2018-01-16 Released Date: 2017-09-14