Author/Yr

Study type

Study vs. Control

N

Mortality

Secondary Endpoint(s)

Significance

Spiller     2007

Retrospective APAP

AC+NAC     vs. NAC

97,960

0.5% vs. 0.8%

↓ AST/ALT>1000       AC 2.9% vs. 12%

SDAC saves lives, ↓ liver damage

Spiller      2006

Prospective APAP divided by time to NAC

AC+NAC     vs. NAC                  4-8hrs, 9-12hrs and 13-16hrs

145

None

↓ AST or ALT >1,000  4-8h  0% vs. 11.7%        9-12h 2.7% vs. 52% 13-16h 10% vs. 45%     

↑ Effect of AC when NAC started later

Cooper     2005

Prospective All ODs

AC vs.   No AC

327

0.3%

1°  LOS, no dif 2°  vomit/aspiration/ICU no dif

Low acuity, severe ODs and <1hr excluded

Merigian  2002

Prospective All OD

AC vs.   No AC

1479

None

1° LOS, no dif 2° clinical worse/emesis   ↓Emesis- AC 25% v no AC 14%

Subjective endpt. Low acuity 86% discharged,

Buckley    1999

Retrospective APAP         

AC 1-2g/kg vs. GL+AC vs. control

981 

None

↓ risk of hepatoxicity  AC 12.9%            AC+GL 14.2%          control  29.9%

AC↓ serum toxicity, GL no benefit

Kornberg  1991

Prospective Children

AC vs. SOI + AC

70

None

Less emesis and shorter LOS w AC  

SOI ↑ side effects, delays AC

 

 

 

 

 

 

 

Underhill 1990 

Prospective APAP

AC vs. GL vs. SOI

60

None

% fall in serum [APAP] AC 52 GL39 SOI 41     

AC > GL or SOI    if <2hrs

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Abbreviations: AC:Activated Charcoal;  APAP:Acetaminophen/Paracetamol; AST/ALT:Transaminases; G:Grams; GL:Gastric Lavage; H:Hours; ICU:Intensive Care Unit; Kg:Kilograms; LOS:Length of Stay; N:Number of Patients; NAC:N-Acetylcysteine; OD:Overdose; SOI:Syrup of Ipecac; ↑:Increase; ↓:Decrease

Table 1: Studies evaluating efficacy of single dose activated charcoal (SDAC).