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May 10, 2026SLEEP

0030 Rhythms of Collapse: The Influence of Circadian Rhythms on Cardiorespiratory Arrests

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Authors

MMMahathi MudigondaKTKarthy ThiagarajanKSKimberly Persaud Shewnarain

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Overview

Retrospective review identifies timing of cardiorespiratory arrests in adults, indicating significance of circadian patterns.

Key Points

  • This study aims to assess the incidence of in-hospital cardiorespiratory arrests and their correlations with timing influenced by circadian rhythms.
  • Included patients aged > 18 with cardiac arrest recorded in the Geisinger Code Blue Dashboard between January and June 2025.
  • Conducted a retrospective review analyzing age, gender, clinical history, and timing of cardiac arrests.
  • Established a requirement of at least twenty minutes between events for them to be counted separately.
  • 162 patients were identified, with a majority being male (59.3%).
  • 47.7% of cardiorespiratory arrests occurred prior to noon, peaking between 08:00 and 13:00.
  • Significant sex differences were noted in the timing of events, with males peaking between 10:00 and 17:00 while females peaked between 08:00 and 14:00.

Cite This Study

Mudigonda et al. (2026) studied this question.

synapsesocial.com/papers/6a0021fec8f74e3340f9d007https://doi.org/10.1093/sleep/zsag091.0030
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Also Consider

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

  1. 1Circadian rhythm and gender distribution of cardiac arrest2018 · 3 citations
  2. 2C55-07 Code Blue Patterns: Diurnal Variation of Major Cardiovascular Events2026
  3. 3Sex-related differences in the presentation and outcome of out-of-hospital cardiopulmonary arrest: A multiyear, prospective, population-based study2002 · 111 citations
  4. 4Observational, retrospective analysis of the circadian variability of out-of-hospital cardiac arrest within days of the week2020 · 5 citations
  5. 5Twenty-four-hour pattern of angina pectoris, acute myocardial infarction and sudden cardiac death: Role of blood pressure, heart rate and rate-pressure product circadian rhythms2007 · 22 citations