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The Impact of Preoperative Statin Therapy and and Its Intensity on Postoperative and Mortality and Morbidity (STIMM)

10 mai 2026 mis à jour par: Arman Valadkhani, Karolinska Institutet

Impact of Statin Therapy and Intensity on Postoperative and Mortality and Morbidity: A Prospective Observational Dual-Centre Cohort Study

Statins are among the most widely prescribed drugs worldwide, and their benefits in cardiovascular risk reduction are well established. Beyond lipid lowering, statins exert pleiotropic effects - including anti-inflammatory, antioxidant, and endothelial-stabilizing properties - that have generated longstanding interest in their potential to mitigate perioperative complications.

Major surgery provokes a systemic inflammatory response, endothelial activation, and hemodynamic stress that may precipitate myocardial injury, organ dysfunction, and death, particularly in patients with pre-existing cardiovascular disease.

Therefore, the aim is to examine the association between preoperative statin therapy and its intensity with postoperative all-cause mortality and days at home alive after major non-cardiac surgery in a large, contemporary, dual center-based cohort.

Aperçu de l'étude

Statut

Complété

Les conditions

Soins périopératoires

Description détaillée

Research hypothesis: Preoperative statin use is independently associated with reduced 30-day and 365-day all-cause mortality compared with no statin use. Higher statin intensity (high vs. low or moderate) is independently associated with reduced 30-day and 365-day all-cause mortality. Statin use and intensity are independently associated with greater DAH30 and DAH365, reflecting reduced postoperative morbidity

Background: Early randomised trials suggested that initiating statin therapy before surgery could reduce cardiac complications and mortality. However, several pivotal trials were subsequently retracted following research misconduct, undermining the evidence base for perioperative statin initiation and rendering clinical guidelines equivocal. Importantly, these discredited trials examined de novo short-term statin initiation - a question distinct from whether patients on established, chronic statin therapy experience better postoperative outcomes.

Subsequent observational studies have reported associations between preoperative statin use and reduced postoperative morbidity and mortality, but most have been limited by narrow surgical populations, and an inability to examine dose-response relationships, residual confounding or patient-centred outcomes beyond mortality.

Data collection and analysis: Data is collected prospectively between 2016 and 2023 across two tertiary academic centres - Karolinska University Hospital Solna and Huddinge - from electronic health records. Statin exposure status and intensity were ascertained from based on registered Anatomical Therapeutic Chemical (ATC) classification codes The primary analytical approach uses inverse probability of treatment weighting, implemented across two pre-specified binary analyses - statin use versus no use in the full cohort, and high versus low-moderate intensity within statin users, for more details see attached statistical analysis plan.

Type d'étude

Observationnel

Inscription (Réel)

70000

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Lieux d'étude

Suède
- - Stockholm, Suède
    - Karolinska University Hospital Huddinge
  - Stockholm, Suède
    - Karolinska University Hospital Solna

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

Adulte
Adulte plus âgé

Accepte les volontaires sains

N/A

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

Adult patients (equal to or over 18 years) undergoing elective non-cardiac surgery

La description

Inclusion Criteria:

Adults aged ≥ 18 years at the time of surgery
Elective (non-emergency) surgical procedure
Non-cardiac surgery (all surgical specialties except cardiac surgery)

Exclusion Criteria:

Obstetric surgery
Transplant surgery
Planned day-case surgery (procedures with intended same-day discharge)
Anesthetic monitoring episodes not involving a surgical procedure (e.g., anesthetic support for central venous catheter insertion)
Urological brachytherapy
Stereotactic radiosurgery (Gamma Knife or equivalent)
Repeat or subsequent surgical procedures during the study period - only the index (chronologically first eligible) procedure per patient is included in the analysis

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats	Description de la mesure	Délai
30- and 365-day mortality Délai: 30 and 365 days respectively	Death within the time frames described	30 and 365 days respectively

Mesures de résultats secondaires

Mesure des résultats	Description de la mesure	Délai
DAH30 (Days At Home alive at 30 days) and DAH365 (Days At Home alive at 365 days) Délai: 30 and 365 days after index surgery,	DAH30: Patients who are hospitalized for 14 days postoperatively but are alive on day 30 will have DAH30=16. Patients who are hospitalized for five days, then discharged, but return after 10 days for an additional 11-day stay, will have DAH30=14. Anyone who dies within 30 days will have DAH30=0. This outcome measure is validated in several studies and has a significant advantage in that it correlates well with complications, even better than length of stay (LOS). We will further record DAH365, calculated as described above.	30 and 365 days after index surgery,

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Karolinska Institutet

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

14 mai 2024

Achèvement primaire (Réel)

2 février 2026

Achèvement de l'étude (Réel)

2 février 2026

Dates d'inscription aux études

Première soumission

4 mai 2026

Première soumission répondant aux critères de contrôle qualité