Table 2

Flow chart, PORTAL study

Phase
Pre-OP day1
OP day1
Post-OP day 1–71

Study-day
-1
0
1–7
Medical history
X


Physical examination
X


Inclusion/exclusion criteria
X


Karnowsky index
X


Patient information
X


Patient informed consent
X


Concomitant medication
X

X
Documentation of surgery (OPS code)

X

Clinical outcome



Bilioma, pleural effusion, pneumonia, wound infection, peritonitis, UTI, sepsis


X
Safety and Tolerance



Adverse events (AE)

X
X
Liver



Integrity: AST, AP, GGT, ALT, LDH, GSH
X
X
X
Synthesis: CE, Chol, TP, PT, PTT albumin, CRP
X
X
X
Elimination: Bilirubin
X
X
X
Kidney



Crea (blood), Na, K, Ca, Cl
X
X
X
Urea-N.
X
X
X
Crea (urine) for Crea-Clearance

X
X
Substrates, metabolites, cytokines



Glucose, TG, lactate, IL-6, melatonin2
X
X
X
Hematology



Hb, Hc, Thr, Leuko, Ery
X
X
X

1 sampling at the same time each day, e.g. 8:00, 2 sampling before, 2 h and 4 h after melatonin application

Pre-OP, pre-operative period; OP, operation/day of operation; Post-OP, post-operative period; OPS, "Operations- und Prozedurenschlüssel" [codes for operations and procedures]; UTI, urinary tract infection; AST, aspartate amino-transferase; AP, alkaline phosphatase; GGT, γ-glutamyl transferase; ALT, alanine aminotransferase; LDH, lactate dehydrogenase; GSH, glutathione; CE, choline esterase; Chol, Cholesterol, TP, total protein; PT, prothrombin time; PTT, partial thromboplastin time, CRP, c-reactive protein, Crea, creatinine; Na, natrium; K, kalium; Ca, calcium; Cl, chloride; Urea-N, urea-nitrogen; TG, triglyceride; IL, interlukin; Hb, hemoglobin, Hc, hematocrit, Thr, thrombocyte, Leuko, leukocyte; Ery, erythrocyte.

Schemmer et al. BMC Surgery 2008 8:2   doi:10.1186/1471-2482-8-2