Pitt bacteremia score: Difference between revisions

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(Created page with "== Background == * Originally developed to predict mortality with Pseudomonas aeruginosa bacteremia * Now used more broadly for mortality from infections more generally == Components == * Measured at onset of bacteremia {| class="wikitable" !Criterion !Points |- |Fever (°C) ≤35 or ≥40 35.1-36.0 or 39.0-39.9 36.1-38.9 |2 1 0 |- |Hypotension: drop by >30 SBP or >20 DBP, or vasopressors, or SBP <90 |2 |- |Mechanical ventilation |2 |- |Cardiac arrest |4 |- |...")
 
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|Fever (°C)
|Fever (°C)
≤35 or ≥40
≤35 or ≥40

35.1-36.0 or 39.0-39.9
35.1-36.0 or 39.0-39.9

36.1-38.9
36.1-38.9
|2
|2
1
1

0
0
|-
|-
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|Mental status
|Mental status
Alert
Alert

Disoriented
Disoriented

Stuporous
Comatose
Stuporous Comatose
|0
|0
1
1

2
2

4
4
|}
|}
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![[Staphylococcus aureus bacteremia|SAB]] (30-dy mortality)<ref>Roth JA, Tschudin-Sutter S, Dangel M, Frei R, Battegay M, Widmer AF. Value of the Pitt Bacteraemia Score to predict short-term mortality in Staphylococcus aureus bloodstream infection: a validation study. Swiss Med Wkly [Internet]. 2017 Aug. 10 [cited 2023 Feb. 8];147(3132):w14482. Available from: https://smw.ch/index.php/smw/article/view/2342</ref>
![[Staphylococcus aureus bacteremia|SAB]] (30-dy mortality)<ref>Roth JA, Tschudin-Sutter S, Dangel M, Frei R, Battegay M, Widmer AF. Value of the Pitt Bacteraemia Score to predict short-term mortality in Staphylococcus aureus bloodstream infection: a validation study. Swiss Med Wkly [Internet]. 2017 Aug. 10 [cited 2023 Feb. 8];147(3132):w14482. Available from: https://smw.ch/index.php/smw/article/view/2342</ref>
!Nonbacteremic infections (14-day mortality)<ref>Heather Henderson, Courtney L Luterbach, Eric Cober, Sandra S Richter, Robert A Salata, Robert C Kalayjian, Richard R Watkins, Yohei Doi, Keith S Kaye, Scott Evans, Vance G Fowler, Jr, Robert A Bonomo, Anthony Harris, Sonia Napravnik, David Van Duin, The Pitt Bacteremia Score Predicts Mortality in Nonbacteremic Infections, ''Clinical Infectious Diseases'', Volume 70, Issue 9, 1 May 2020, Pages 1826–1833, https://doi.org/10.1093/cid/ciz528</ref>
!Nonbacteremic infections (14-day mortality)<ref>Heather Henderson, Courtney L Luterbach, Eric Cober, Sandra S Richter, Robert A Salata, Robert C Kalayjian, Richard R Watkins, Yohei Doi, Keith S Kaye, Scott Evans, Vance G Fowler, Jr, Robert A Bonomo, Anthony Harris, Sonia Napravnik, David Van Duin, The Pitt Bacteremia Score Predicts Mortality in Nonbacteremic Infections, ''Clinical Infectious Diseases'', Volume 70, Issue 9, 1 May 2020, Pages 1826–1833, https://doi.org/10.1093/cid/ciz528</ref>
!
|-
|-
|0
|0
|8%
|8%
|
|
|
|-
|-
|1
|1
|5%
|5%
|
|
|
|-
|-
|2
|2
|15%
|15%
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|
|
|-
|-
|3
|3
|40%
|40%
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|-
|-
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|
|
|5%
|5%
|
|-
|-
|≥4
|≥4
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|
|40%
|40%
|
|-
|-
|4
|4
|47%
|47%
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|
|
|-
|-
|5
|5
|33%
|33%
|
|
|
|-
|-
|6
|6
|43%
|43%
|
|
|
|-
|-
|≥7
|≥7
|75%
|75%
|
|
|
|}
|}

Revision as of 14:25, 28 July 2023

Background

Components

  • Measured at onset of bacteremia
Criterion Points
Fever (°C)

≤35 or ≥40

35.1-36.0 or 39.0-39.9

36.1-38.9

2

1

0

Hypotension: drop by >30 SBP or >20 DBP, or vasopressors, or SBP <90 2
Mechanical ventilation 2
Cardiac arrest 4
Mental status

Alert

Disoriented

Stuporous Comatose

0

1

2

4

Interpretation

  • ≥4 usually used as a cutoff for increased risk of death
Mortality predicted by PBS for various infections.
Score SAB (30-dy mortality)[1] Nonbacteremic infections (14-day mortality)[2]
0 8%
1 5%
2 15%
3 40%
<4 5%
≥4 40%
4 47%
5 33%
6 43%
≥7 75%
  1. Roth JA, Tschudin-Sutter S, Dangel M, Frei R, Battegay M, Widmer AF. Value of the Pitt Bacteraemia Score to predict short-term mortality in Staphylococcus aureus bloodstream infection: a validation study. Swiss Med Wkly [Internet]. 2017 Aug. 10 [cited 2023 Feb. 8];147(3132):w14482. Available from: https://smw.ch/index.php/smw/article/view/2342
  2. Heather Henderson, Courtney L Luterbach, Eric Cober, Sandra S Richter, Robert A Salata, Robert C Kalayjian, Richard R Watkins, Yohei Doi, Keith S Kaye, Scott Evans, Vance G Fowler, Jr, Robert A Bonomo, Anthony Harris, Sonia Napravnik, David Van Duin, The Pitt Bacteremia Score Predicts Mortality in Nonbacteremic Infections, Clinical Infectious Diseases, Volume 70, Issue 9, 1 May 2020, Pages 1826–1833, https://doi.org/10.1093/cid/ciz528