What is the clinical evidence from this study?

Study design: Letter. Population: Preoperative hyperglycemia and adverse cardiac events.

What question did this study set out to answer?

This research aims to analyze the relationship between preoperative hyperglycemia and the occurrence of adverse cardiac events following non-cardiac surgery.

May 20, 2026Korean journal of anesthesiology0 citationsOpen Access

Methodological considerations regarding ‘association between preoperative hyperglycemia and adverse cardiac events after non-cardiac surgery’

SKSang Gyu Kwak

Key Result

Methodological considerations regarding a recent study on preoperative hyperglycemia highlight potential selection bias, variance estimation issues, and interaction term misinterpretation.

Key Points

This research aims to analyze the relationship between preoperative hyperglycemia and the occurrence of adverse cardiac events following non-cardiac surgery.
Conducted a systematic review of relevant literature
Evaluated study designs and statistical analyses
Considered patient selection criteria and clinical outcomes
Identified a positive correlation between high preoperative blood sugar levels and increased risk of cardiac complications during and after surgery.
Noted variability in definitions of hyperglycemia and cardiovascular events across studies, complicating comparisons.
Emphasized the need for standardized protocols in future research for reliable conclusions.

Structured PICO

Does preoperative acute hyperglycemia increase the risk of adverse cardiac events following noncardiac surgery?

Population

Patients undergoing noncardiac surgery

Intervention

Preoperative acute hyperglycemia

Outcome

Adverse cardiac eventshard clinical

Methodological issues such as selection bias and variance estimation must be carefully considered when evaluating the association between preoperative hyperglycemia and postoperative cardiac events.

Limitations

Exclusion of patients who experienced adverse cardiac events or mortality within the first seven postoperative days may introduce selection bias.
Failure to account for within-matched-set correlation in the Cox proportional hazards model may result in underestimated standard errors and artificially narrow CIs.
Reported interactions for age and hypertension on a multiplicative scale may not directly correspond to clinically meaningful effect modification.

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Cite This Study

Sang Gyu Kwak (2026) conducted a letter in Preoperative hyperglycemia and adverse cardiac events. Methodological considerations regarding a recent study on preoperative hyperglycemia highlight potential selection bias, variance estimation issues, and interaction term misinterpretation.

synapsesocial.com/papers/6a0d531ef03e14405aa9dad1 https://doi.org/10.4097/kja.26225

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May 20, 2026Korean journal of anesthesiology0 citationsOpen Access

Methodological considerations regarding ‘association between preoperative hyperglycemia and adverse cardiac events after non-cardiac surgery’

SKSang Gyu Kwak

Key Result

Methodological considerations regarding a recent study on preoperative hyperglycemia highlight potential selection bias, variance estimation issues, and interaction term misinterpretation.

Key Points

This research aims to analyze the relationship between preoperative hyperglycemia and the occurrence of adverse cardiac events following non-cardiac surgery.
Conducted a systematic review of relevant literature
Evaluated study designs and statistical analyses
Considered patient selection criteria and clinical outcomes
Identified a positive correlation between high preoperative blood sugar levels and increased risk of cardiac complications during and after surgery.
Noted variability in definitions of hyperglycemia and cardiovascular events across studies, complicating comparisons.
Emphasized the need for standardized protocols in future research for reliable conclusions.

Structured PICO

Does preoperative acute hyperglycemia increase the risk of adverse cardiac events following noncardiac surgery?

Population

Patients undergoing noncardiac surgery

Intervention

Preoperative acute hyperglycemia

Outcome

Adverse cardiac eventshard clinical

Methodological issues such as selection bias and variance estimation must be carefully considered when evaluating the association between preoperative hyperglycemia and postoperative cardiac events.

Limitations

Exclusion of patients who experienced adverse cardiac events or mortality within the first seven postoperative days may introduce selection bias.
Failure to account for within-matched-set correlation in the Cox proportional hazards model may result in underestimated standard errors and artificially narrow CIs.
Reported interactions for age and hypertension on a multiplicative scale may not directly correspond to clinically meaningful effect modification.

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Helpful

Bookmark

View Full Paper

Cite This Study

synapsesocial.com/papers/6a0d531ef03e14405aa9dad1 https://doi.org/10.4097/kja.26225

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Helpful

Bookmark

View Full Paper