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March 1, 2005Sao Paulo Medical JournalOpen Access

Preoperative laboratory evaluation of patients aged over 40 years undergoing elective non-cardiac surgery

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Why the study?

Does routine preoperative laboratory screening change clinical management in patients over 40 years undergoing elective non-cardiac surgery?

Population

991 patients aged over 40 years undergoing elective non-cardiac surgery, mean age 63.6, 54.6% male…

Design

Cross-sectional

Authors

FAFábio Yoshito AjimuraUniversidade de São PauloAMAlex Silva Santos Freire MaiaUniversidade de São PauloAHAdriana HachiyaHospital São Paulo

Discussion

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Implication

Abnormal preoperative tests did not alter management; leaves open whether routine screening warrants de-implementation in elective non-cardiac surgery.

Structured PICO

Does routine preoperative laboratory screening change clinical management in patients over 40 years undergoing elective non-cardiac surgery?

P
Population
991 patients aged over 40 years undergoing elective non-cardiac surgery, mean age 63.6, 54.6% male, evaluated at a University Hospital in São Paulo, Brazil.
I
Intervention
Routine preoperative screening tests including blood cell count, serum sodium, potassium, urea, creatinine, prothrombin time, thrombin time, partial thromboplastin time, electrocardiogram, and chest X-ray.
O
Outcome
Percentage of abnormalities on laboratory tests and correlation with changes in preoperative evaluation management.

Routine preoperative laboratory testing in patients over 40 undergoing non-cardiac surgery frequently reveals abnormalities but rarely alters clinical management, suggesting indiscriminate testing may be unnecessary.

Cite This Study

Ajimura et al. (2005) studied this question.

synapsesocial.com/papers/6a76238efa1990f79e6141c3https://doi.org/10.1590/s1516-31802005000200003
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Also Consider

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

  1. 1The Usefulness of Preoperative Laboratory Screening1985 · 481 citations
  2. 2Rational preoperative evaluation1986 · 25 citations
  3. 3Usefulness of Routine Preoperative Chest Roentgenograms in Elderly Patients1987 · 21 citations
  4. 4Perioperative Assessment and Management of Risk from Coronary Artery Disease1997 · 259 citations
  5. 5Prothrombin and Partial Thromboplastin Times as Preoperative Screening Tests1982 · 131 citations