Measurement of intraperitoneal metabolites during hypothermic cardiopulmonary bypass using microdialysis

Figures & data

Table I. Demographic and operative details of the study group.

Variable	Average ± S.D.	Median (range)
Age (years)	63.7 ± 11.1	64 (62–68)
Male: Female (n)	9:2
Body Surface area (m^2)	1.91 ± 0.1
LV function
Good (n)	9
Moderate (n)	2
CPB time (min)	50.9 ± 7.3
X clamp time (min)	27.3 ± 1.3
Number of grafts (n)	2.8 ± 0.2	3 (2–4)
Lowest Temperature (°C)	29.6 ± 1.3

Figure 1a, b. Comparison of the trends of serum and intraperitoneal glucose levels (mean and S.D.).

Figure 2a, b. Comparison of the trends of serum and intraperitoneal lactate levels (mean and S.D.).

Figure 3a, b. Trends of intraperitoneal pyruvate levels (mean and S.D.).

Figure 4a, b. Trends of intraperitoneal glycerol levels (mean and S.D.).

Table II. Normal values, of intraperitoneal and subcutaneous microdialysis in measurements of lactate/pyruvate ratio, glucose and glycerol. (reproduced with permission from Jansson et al. (29))

	Intraperitoneal		Subcutaneous
	Lower value	Upper value	Lower value	Upper value
Glucose (mmol)	5.6	11.9	3.5	12.6
Glycerol (μmol)	38	221	109	489
L:P ratio	7.3	19.4	6.2	13.3

Figure 5a, b. Trends of intraperitoneal lactate to pyruvate ratio (mean and S.D.).

Figure 6. Microdialysis catheter.

Jansson K, Jansson M, Andersson M, Magnuson A, Ungerstedt U, Norgen L. Normal values and differences between intraperitoneal and subcutaneous microdialysis in patients after non-complicated gastrointestinal surgery. Scan J Clin Lab Invest. 2005;65:273–82.

 PubMed Web of Science ®Google Scholar