624074/07 8-5
8.2.5 Heart circulation
In the heart-lung panel, the circulation of blood through the
heart is displayed superimposed on the breathing of the lungs.
The heart and vessels are shown to be pulsating only if HLI
becomes a higher value (indicating hemodynamic instability).
The higher the HLI the larger the pulsation (the smaller the
heart and the vessel diameter).
If there is no pulsation and the diameter is large, this means
that hemodynamics are acceptable. If no HLI is available, there
is no pulsation and the diameter is medium. A small white
heart pulsates with the patient’s pulse. If no pulse is detected,
no white heart is displayed.
If there is no SpO
2
, only the contour of the big colored heart is
displayed.
Figure 8-5. Heart circulation (left: no SpO
2
, hemodynamic
status unclear; middle: haemodynamically unstable,
showing pronounced pulsation; right: haemodynami-
cally stable, with pulse)
Table 8-1. Dynamic lung normal values
Parameter Definition of normal values
Tidal volume
(Vt)
10 ml/kg IBW (calculated from Patient height)
Compliance
(Cstat)
For Patient height between 30 and 135 cm: 0.000395 *
Patient height
2.38
For Patient height > 135 cm: -0.0028 * Patient height +
1.3493 * Patient height – 84.268
Resistance
(Rinsp)
For Patient height < 210 cm: (1.993 – 0.0092 * Patient
height) * 10.2 + 5
For Patient height > 210 cm: 0.5 + 5