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liver function monitoring

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1 liver function monitoring
PULSION LiMON Non-invasive liver function monitoring

2 Setup Configuration PC5000 LiMON PICG0025 ICG-PULSION 25 mg
PC50150 LiMON reusable sensor for adults and infants PV50100 LiMON disposable sensor for adults and infants PV50200 LiMON disposable sensor for neonates

3 Pulse Densitometry Based on Pulse Oximetry
LEDs 805 nm & 905 nm pulsatile805 nm non pulsatile805 nm pulsatile905 nm Sensor non pulsatile905 nm [ s ] 1 2 3 4 5 CICG mg/l pulsatile905 nm non pulsatile905 nm CICG = pulsatile805 nm non pulsatile805 nm

4 dynamically determined range for back extrapolation
ICG Dilution Curve Analysis CICG mg/l calculation of half life time and elimination rate of ICG-PULSION dynamically determined range for back extrapolation

5 Global liver function from elimination of ICG-PULSION:
Parameters Global liver function from elimination of ICG-PULSION: Plasma Disappearance Rate of ICG PDR (%/min) ICG Retention Rate after 15 min R15 (%) ICG Clearance CB (ml/min) Circulating Blood Volume BV (ml) Pulse oximetry Oxygen Saturation SpO2 (%) Heart Rate HR (bpm)

6 Parameter Calculation Normal Range PDR (%/min) ln2/t1/2  100 18 – 25
Calculations and Normal Ranges Parameter Calculation Normal Range PDR (%/min) ln2/t1/2  – 25 R15 (%) CICG15m / CICG t=0  – 10 CBI (ml/min/m2) BV  PDR / BSA 500 – 750 BVI (ml/m2) [ICG]inj / CICG t=0 / BSA

7 Invasive COLD System vs non-invasive LiMON (16 pts, n=54)
Validation Invasive COLD System vs non-invasive LiMON (16 pts, n=54) Sakka S, Meier-Hellmann A: International Journal of Intensive Care, 2002

8 Evaluation of liver function in organ donors and recipients
Fields of Clinical Application All critically patients, especially those with sepsis, acute liver or multi-organ failure, and after multiple trauma Patients with chronically reduced hepatic function (hepatitis, liver cirrhosis) Evaluation of liver function in organ donors and recipients Monitoring of liver function during liver or abdominal surgery (resection, porto-caval shunt) Diagnosis and monitoring of congenital liver failure in children and neonates

9 Application in Intensive Care
More than 50% of surgical ICU patients exhibit reduced PDR accompanied with a higher mortality normal range Sakka S, Meier-Hellmann A: International Journal of Intensive Care, 2002

10 * Prognosis of Survival in ICU Patients
Significantly reduced liver function in non-survivors Non-survivors n= 168 Survivors 45 40 35 30 25 20 15 10 5 ICG-PDR [%/ min] (p< 0.001) * Sakka SG, Meier-Hellmann A: Yearbook of Intensive Care and Emergency Medicine, 2001

11 Prognosis of Survival in ICU Patients
Clear indicator of probability of survival in septic shock (Survivors) (Non-survivors) Conclusion: Increase of reduced ICG elimination during the first 120 hours of septic shock predicts survival, whereas no change or even further decrease of ICG elimination predicts non-survival Kimura S et al: Crit Care Med 2001

12 Value as Liver Function Test in Intensive Care
Higher sensitivity and specificity than bilirubin BILIRUBIN (>33.8) ICG-PDR 20 40 60 80 100 100-Specificity [%] Sensitivity [%] (>15.2) n= 336 p= 0.06 Sakka SG, Meier-Hellmann A: Yearbook of Intensive Care and Emergency Medicine, 2001

13 Liver Function in Organ Donors
Clear borderline for transplantation suitability Wesslau C et al: Transplantology 1994

14 Application After Liver Transplantation
Clear borderline for probability of graft function Jalan R et al: Transplantation 1994

15 Value as Liver Function Test in Liver Surgery
Better correlation with prognosis than laboratory parameters in cirrhotic patients Hemming AW et al: Am J Surg 1992

16 Value as Liver Function Test in Liver Surgery
Correlation between parenchymal cell volume and ICG elimination Hashimoto M and Watanabe G: J Surg Res 2000

17 Advantages Non-invasive measurement
Uses a 4 wavelength near-infra red finger clip sensor and any peripheral or central venous access for injection of ICG-PULSION Quick information Bed-side results are obtained within a few minutes (approx. 6-8 min.). Specific parameters ICG-PULSION elimination is well established for quantification of liver function and has prognostic value Simple application Results not user dependent, up to 10 measurements per 24 hours Time and cost saving Reduces the numbers of laboratory blood/plasma samples


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