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December 15, 1990Annals of Internal Medicine

Preoperative Screening: Value of Previous Tests

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Why the study?

Does substituting preoperative screening tests with previous normal test results safely predict perioperative laboratory status in patients undergoing elective surgery?

Population

1109 consecutive patients undergoing elective surgery in 1988 at an urban tertiary care Veterans Affairs…

Comparison

Substitution of preoperative screening tests… vs Routine repeat preoperative screening tests at…

Design

Cohort

Follow-up

Up to 1 year prior to admission

Authors

DMDavid S. MacphersonFred Hutch Cancer Center

Discussion

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Implication

Low rate of abnormal repeats supports selective omission of preoperative labs after recent normals; leaves open safety without randomized confirmation.

Structured PICO

Does substituting preoperative screening tests with previous normal test results safely predict perioperative laboratory status in patients undergoing elective surgery?

P
Population
1109 consecutive patients undergoing elective surgery in 1988 at an urban tertiary care Veterans Affairs Hospital.
I
Intervention
Substitution of preoperative screening tests with previous normal test results obtained within the past year.
C
Comparator
Routine repeat preoperative screening tests at admission.
O
Outcome
Frequency of test results that change from a normal value to a value likely to alter perioperative management.surrogate

Previous normal laboratory test results obtained within the past year can safely substitute for routine preoperative screening tests in patients undergoing elective surgery without obvious indications for retesting.

Cite This Study

David S. Macpherson (1990) studied this question.

synapsesocial.com/papers/6a97f7a6378ea914c1fae503https://doi.org/10.7326/0003-4819-113-12-969
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Preoperative laboratory evaluation of patients aged over 40 years undergoing elective non-cardiac surgery2005 · 36 citations
  2. 2Rational preoperative evaluation1986 · 25 citations
  3. 3Routine pre‐operative blood testing: is it necessary?2002 · 77 citations
  4. 4The Usefulness of Preoperative Laboratory Screening1985 · 481 citations
  5. 5The usefulness of preoperative laboratory screening1985 · 71 citations