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Table 1 Explanation of definitions to be used as part of this study

From: Optimising intraperitoneal gentamicin dosing in peritoneal dialysis patients with peritonitis (GIPD) study

Terms

Definitions

Peritonitis

   * Presence of two clinical signs and symptoms:

 

abdominal pain, nausea, vomiting, diarrhoea, fever and cloudy dialysate

 

   * Peritoneal dialysate WCC > 100/mm3 with 50% neutrophils

 

   * Demonstration of bacteria on gram stain or culture

Clinical failure

   * Insufficient lessening of signs and symptoms of infection to qualify as improvement

 

   * Continued symptoms or signs beyond day four

 

   * Dialysate WCC > 100/mm3 at day 14

 

   * Removal of the catheter for failure to respond to treatment

 

   * Recurrence of peritonitis with same micro-organism (relapse) within 28-day follow up period after cessation of antibiotics

 

   * Death due to uncontrolled infection

Clinical success

Primary response - disappearance of the signs and symptoms of peritonitis and clear, sterile PD on day 10

 

Relapsed - primary response but recurrence by day 28

 

Complete cure - no relapse by day 28 after completion of antibiotics

Outcome indeterminate

When no evaluation is possible for any reason

Bacteriologic response based on culture results

Eradication -Causative organisms absent and remaining absent for 28 days after completion of antibiotics

 

Persistence - Causative organisms present at any culture dates after initiation of therapy

 

Superinfection - Presence of new infecting organisms and cultures dates during and just after two days of therapy

 

Bacteriologic indeterminate - When result not available for any reason including no growth in the first culture

 

Eradication with relapse - Causative organisms absent at day 14 but present at or before 28 +/- 2 days follow up

 

Eradication with reinfection - Causative organisms absent at day 14 and presence of new organisms at or before 28 +/- 2 days of follow up

  1. Key: This is a list of suggested definitions for use in future research studies in this area- from the Caring for Australasians with Renal Impairment (CARI) Guidelines for PD associated peritonitis 2004