[Kidney procurement and transplantation from a surgical perspective]

[Kidney injury and multiple trauma: outcome, course and treatment algorithm. An organ-specific evaluation of 835 patients from the trauma register of the DGU]

BACKGROUND

The relevance of renal trauma in severely injured patients within a large collective has not yet been thoroughly reviewed. This study aimed at assessing the prevalence of renal trauma in relation to the outcome and the currently established method of treatment.

PATIENTS AND METHODS

Altogether data of 35,664 patients of the TraumaRegister of the German Society of Trauma Surgery (DGU) (1996-2007) were interpreted retrospectively. All patients with an injury severity score (ISS) ≥16, direct admission to a trauma center and an age of ≥16 years were included. All patients with abdominal trauma (AIS(Abdomen) ≥2) were compared with patients with abdominal and renal trauma (AIS(Kidney) ≥2).

RESULTS

A total of 18,416 patients fulfilled the inclusion criteria of which 6,218 (34.1%) had abdominal injuries. Of these patients with abdominal injury 835 (13.3%) additionally showed a kidney injury (AIS(Abdomen) ≥2, AIS(Kidney) 2-5) and were analyzed according to the classification of the American Association for the Surgery of Trauma (AAST) organ-severity-score. AAST kidney: II°: 45.5%, III°: 31.1%, IV°: 15.6%, V°: 7.8%. Patients with leading kidney injury (grade IV and V) thereby showed a significant increase in mortality (IV: 32.3% and V: 40.0%) and an increase in the need for surgical intervention (IV: 61.5 and V: 81.5%). With an increasing grade of renal injury, however, the ISS is also increased but mortality was not increased over the expected mortality rate (RISC score) due to the additional renal injury. Dialysis rate in the surviving patients showed an increased rate depending on the degree of the kidney injury (II: 5.5%, III: 7.6%, IV: 18.8%, V: 8.3%).

CONCLUSION

The results presented here show the prevalence and the outcome of kidney injury in a large collective within the TraumaRegister of the DGU for the first time. Based on the current literature and the findings a treatment algorithm has been developed.

Use of marginal organs in kidney transplantation for marginal recipients: too close to the margins of safety?

Objective

Due to organ shortage, average waiting time for a kidney in Germany is about 4 years after start of dialysis. Number of kidney grafts recovered can only be maintained by accepting older and expanded criteria donors. The aim of this study was to analyse the impact of donor and recipient risk on kidney long-term function.

Methods

All deceased kidney transplantations were considered. We retrospectively studied 332 patients between 2002 and 2006; divided in 4 groups reflecting donor and recipient risk.

Results

Non-marginal recipients were less likely to receive a marginal organ (69 of 207, 33%) as compared to marginal recipients, of whom two-thirds received a marginal organ (p < 0.0001). Graft function significantly differed between the groups, but detrimental effect of marginal recipient status on eGFR after 12 months (-6 ml/min/1.73 qm, 95% CI -2 to -9) was clearly smaller than the effect of marginal donor status (-10 ml/min/1.73 qm, 95% CI -7 to -14).

Conclusions

As we were able to show expanded criteria donor has a far bigger effect on long-term graft function than the "extra risk" recipient. Although there have been attempts to define groups of recipients who should be offered ECD kidneys primarily the discussion is still ongoing.

Evaluation of organ donor card holders among public officials of a major German city

INTRODUCTION

Each year in Germany, the lack of donor organs results in more than 1000 patients dying while on the transplant waiting list. At the same time, there is an organ donor potential that is not being exploited. The objective of this study was to collect the rate of holders of organ donor cards among public officials in a major German city.

METHODS

In 2007, a survey was conducted among public officials in Essen, North Rhine-Westphalia, Germany, regarding the topic of organ donation. Gender, age, and the "indicator for organ donation willingness" were stratified and analyzed according to the holding of organ donor cards.

RESULTS

A total of 1582 completely answered questionnaires were evaluated; 20.92% of the respondents had an organ donor card. No statistically significant association between gender (P = .0691), age (P = .8513), or possession of a donor card could be determined. We observed a significant correlation (P < .0001) between the indicator for organ donation willingness and possession of an organ donor card.

DISCUSSION

Based on current research, we consider an up-to-date, broader-reaching, representative inquiry necessary for our society. Should this present similar results, then a special education campaign is necessary, which considers sociocultural backgrounds and responds to the indicator for organ donation willingness that we analyzed. In so doing, one individual goal is the promotion of health and body awareness and thus an increase in the associated potential organ donor willingness.