Is delayed graft function the same as graft failure?

No. Delayed graft function describes a graft that works poorly at first but is expected to recover, often defined for kidneys as needing dialysis in the first week. Graft failure means the organ does not recover function. They lie at different points on the spectrum of early graft injury.

What causes delayed graft function?

It is largely attributed to ischemia-reperfusion injury sustained during preservation and reperfusion, made more likely by longer cold ischemia times and by donation after circulatory death. This is why preservation strategy has been studied as a way to reduce it.

Delayed Graft Function

Delayed graft function is early failure of a transplanted organ to take over its job promptly, most often described for the kidney, where it is commonly operationalized as the need for dialysis in the first week after transplantation. It reflects a graft that is injured but recoverable, sitting between immediate function and outright failure.

Definition

Delayed graft function is the impaired early function of a transplanted organ that nonetheless eventually recovers; in kidney transplantation it is most often defined operationally as the requirement for dialysis within the first week after transplantation, reflecting acute, potentially reversible graft injury.

Scope

The topic covers what delayed graft function means, how it relates to ischemia-reperfusion injury and preservation, and why it matters for graft and patient outcomes. It is a reference description of the clinical state; it does not provide diagnostic thresholds for individual use, dialysis decisions, or management protocols.

Core questions

What distinguishes delayed graft function from prompt function and from outright graft failure?
How do ischemia-reperfusion injury and preservation conditions contribute to it?
What does delayed graft function imply for longer-term graft and patient outcomes?

Key concepts

Operational definition (dialysis in the first week, for kidneys)
Acute kidney injury of the allograft
Ischemia-reperfusion injury as a driver
Cold ischemia time as a risk factor
Donation after circulatory death
Reversibility and recovery

Mechanisms

Delayed graft function is closely tied to ischemia-reperfusion injury: the ischemic interval during preservation and the injury unmasked at reperfusion produce acute, potentially reversible damage to the graft, which in the kidney resembles acute kidney injury (Mannon, 2018; Eltzschig & Eckle, 2011). Longer cold ischemia time and donation after circulatory death increase the likelihood of this early dysfunction, which is one reason preservation method has been studied as a way to reduce it (Moers et al., 2009). Because the injury is recoverable, the graft typically regains function over days to weeks.

Clinical relevance

Delayed graft function is a recognized early adverse outcome that has been associated with poorer allograft survival, and it shapes how clinicians interpret early post-transplant course. This entry describes the concept and its associations for reference and does not provide criteria or management guidance for individual patients.

Epidemiology

Delayed graft function is most frequently reported in deceased-donor kidney transplantation and is more common with extended-criteria and circulatory-death donors and with longer cold ischemia times. A systematic review and meta-analysis examined its association with allograft and patient survival across reported cohorts (Yarlagadda et al., 2009).

Evidence & guidelines

A systematic review and meta-analysis synthesized the relationship between delayed graft function and graft and patient survival (Yarlagadda et al., 2009). A randomized trial of hypothermic machine perfusion versus cold storage in deceased-donor kidneys reported differences in delayed graft function as an outcome (Moers et al., 2009), linking preservation strategy to this clinical state.

History

As deceased-donor and marginal-donor transplantation expanded, early non-function requiring dialysis became a recognized and measurable outcome, prompting efforts to standardize its definition and to quantify its prognostic weight (Yarlagadda et al., 2009; Mannon, 2018). Interest in preservation interventions to reduce it followed (Moers et al., 2009).

Debates

How should delayed graft function be defined?: The common dialysis-based definition is convenient but imperfect, because the decision to dialyze varies and slower, non-dialysis-requiring dysfunction may be missed; alternative functional definitions have been proposed, and the lack of a single standard complicates comparison across studies.

Key figures

Roslyn Mannon
Chirag Parikh

Seminal works

yarlagadda-2009
mannon-2018
moers-2009

Frequently asked questions

Is delayed graft function the same as graft failure?: No. Delayed graft function describes a graft that works poorly at first but is expected to recover, often defined for kidneys as needing dialysis in the first week. Graft failure means the organ does not recover function. They lie at different points on the spectrum of early graft injury.
What causes delayed graft function?: It is largely attributed to ischemia-reperfusion injury sustained during preservation and reperfusion, made more likely by longer cold ischemia times and by donation after circulatory death. This is why preservation strategy has been studied as a way to reduce it.