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January 1, 2016Circulation JournalOpen Access

Effects of Aging on the Coagulation Fibrinolytic System in Outpatients of the Cardiovascular Department

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Key result

Advancing age, particularly being 75 years or older, was independently associated with a significantly higher risk of elevated prothrombin-fragment 1+2 levels (OR 11.61) in cardiology outpatients.

Population

773 cardiology outpatients. Key exclusions: presence of atrial fibrillation or deep venous thrombosis…

Design

Cross-sectional

Authors

AOAkinori OchiTsukuba Medical Center HospitalTATaro AdachiShowa UniversityKIKoichiro InokuchiAichi Gakuin University

Discussion

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Implication

Age ≥75 associated with higher prothrombin-fragment 1+2 in outpatients; leaves open prospective validation before any risk-stratification role.

Study Design

Type

Cross-Sectional (n=773)

Multicenter

No

Structured PICO

P
Population
773 cardiology outpatients without atrial fibrillation or severe renal dysfunction, evaluated cross-sectionally for age-dependent changes in coagulation and fibrinolysis markers.
O
Outcome
Correlation between aging and blood markers of coagulation, fibrinolysis, and vascular endothelial function (D-dimer, F1+2, PIC, TM, TAT, tPAI-1, fibrinogen)surrogate

Main Result

Odds Ratio: 11.611 (95% CI 7.143–19.183)

p-value: p=<0.001

In real-world cardiology outpatients, hypercoagulable states and fibrinolytic activation develop with advancing age, particularly in those over 75 years, independent of other comorbidities.

Limitations

  • Single-center, cross-sectional study design with potential selection bias
  • Relatively small study population
  • Did not account for blood collection methods like needle gauge or seasonal variation
  • Did not exclude concomitant use of antiplatelet medication
  • Could not directly evaluate endothelial function
  • Single-center study
  • Sample size might not be large enough
  • Did not integrate gauge of needle or take seasonal variation into consideration
  • Could not directly evaluate endothelial function (e.g., flow-mediated dilation or ankle-brachial index)
  • Could not take into account activation of protein C

Cite This Study

Ochi et al. (2016) conducted a cross-sectional in Cardiology outpatients (n=773). Advancing age (≥75 years) vs. Age ≤64 years was evaluated on High prothrombin-fragment 1+2 (F1+2) level (≥230 pmol/L) (OR 11.611, 95% CI 7.143-19.183, p=<0.001). Advancing age, particularly being 75 years or older, was independently associated with a significantly higher risk of elevated prothrombin-fragment 1+2 levels (OR 11.61) in cardiology outpatients.

synapsesocial.com/papers/6a7d902787be3f923b5c97dfhttps://doi.org/10.1253/circj.cj-16-0530
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