Medical Dialogues
  • Dermatology
Login Register
This site is intended for healthcare professionals only
Login Register
  • MD Brand Connect
  • Vaccine Hub
  • MDTV
    • Breaking News
    • Medical News Today
    • Health News Today
    • Latest
    • Journal Club
    • Medico Legal Update
    • Latest Webinars
    • MD Shorts
    • Health Dialogues
  • Fact Check
  • Health Dialogues
Medical Dialogues
  • Medical News & Guidelines
      • Anesthesiology
      • Cardiology and CTVS
      • Critical Care
      • Dentistry
      • Dermatology
      • Diabetes and Endocrinology
      • ENT
      • Gastroenterology
      • Medicine
      • Nephrology
      • Neurology
      • Obstretics-Gynaecology
      • Oncology
      • Ophthalmology
      • Orthopaedics
      • Pediatrics-Neonatology
      • Psychiatry
      • Pulmonology
      • Radiology
      • Surgery
      • Urology
      • Laboratory Medicine
      • Diet
      • Nursing
      • Paramedical
      • Physiotherapy
  • Health news
      • Doctor News
      • Government Policies
      • Hospital & Diagnostics
      • International Health News
      • Medical Organization News
      • Medico Legal News
      • NBE News
      • NMC News
  • Fact Check
      • Bone Health Fact Check
      • Brain Health Fact Check
      • Cancer Related Fact Check
      • Child Care Fact Check
      • Dental and oral health fact check
      • Diabetes and metabolic health fact check
      • Diet and Nutrition Fact Check
      • Eye and ENT Care Fact Check
      • Fitness fact check
      • Gut health fact check
      • Heart health fact check
      • Kidney health fact check
      • Medical education fact check
      • Men's health fact check
      • Respiratory fact check
      • Skin and hair care fact check
      • Vaccine and Immunization fact check
      • Women's health fact check
  • AYUSH
    • Ayurveda
    • Homeopathy
    • Siddha
    • Unani
    • Yoga
  • State News
      • Andaman and Nicobar Islands
      • Andhra Pradesh
      • Arunachal Pradesh
      • Assam
      • Bihar
      • Chandigarh
      • Chattisgarh
      • Dadra and Nagar Haveli
      • Daman and Diu
      • Delhi
      • Goa
      • Gujarat
      • Haryana
      • Himachal Pradesh
      • Jammu & Kashmir
      • Jharkhand
      • Karnataka
      • Kerala
      • Ladakh
      • Lakshadweep
      • Madhya Pradesh
      • Maharashtra
      • Manipur
      • Meghalaya
      • Mizoram
      • Nagaland
      • Odisha
      • Puducherry
      • Punjab
      • Rajasthan
      • Sikkim
      • Tamil Nadu
      • Telangana
      • Tripura
      • Uttar Pradesh
      • Uttrakhand
      • West Bengal
  • Medical Education
      • Ayush Education News
      • Dentistry Education News
      • Medical Admission News
      • Medical Colleges News
      • Medical Courses News
      • Medical Universities News
      • Nursing education News
      • Paramedical Education News
      • Study Abroad
  • Industry
      • Health Investment News
      • Health Startup News
      • Medical Devices News
      • Pharma News
      • Pharmacy Education News
      • Industry Perspective
  • MDTV
      • Health Dialogues MDTV
      • Health News today MDTV
      • Latest Videos MDTV
      • Latest Webinars MDTV
      • MD shorts MDTV
      • Medical News Today MDTV
      • Medico Legal Update MDTV
      • Top Videos MDTV
      • Health Perspectives MDTV
      • Journal Club MDTV
      • Medical Dialogues Show
This site is intended for healthcare professionals only
LoginRegister
Medical Dialogues
LoginRegister
  • Home
  • Medical news & Guidelines
    • Anesthesiology
    • Cardiology and CTVS
    • Critical Care
    • Dentistry
    • Dermatology
    • Diabetes and Endocrinology
    • ENT
    • Gastroenterology
    • Medicine
    • Nephrology
    • Neurology
    • Obstretics-Gynaecology
    • Oncology
    • Ophthalmology
    • Orthopaedics
    • Pediatrics-Neonatology
    • Psychiatry
    • Pulmonology
    • Radiology
    • Surgery
    • Urology
    • Laboratory Medicine
    • Diet
    • Nursing
    • Paramedical
    • Physiotherapy
  • Health news
    • Doctor News
    • Government Policies
    • Hospital & Diagnostics
    • International Health News
    • Medical Organization News
    • Medico Legal News
    • NBE News
    • NMC News
  • Fact Check
    • Bone Health Fact Check
    • Brain Health Fact Check
    • Cancer Related Fact Check
    • Child Care Fact Check
    • Dental and oral health fact check
    • Diabetes and metabolic health fact check
    • Diet and Nutrition Fact Check
    • Eye and ENT Care Fact Check
    • Fitness fact check
    • Gut health fact check
    • Heart health fact check
    • Kidney health fact check
    • Medical education fact check
    • Men's health fact check
    • Respiratory fact check
    • Skin and hair care fact check
    • Vaccine and Immunization fact check
    • Women's health fact check
  • AYUSH
    • Ayurveda
      • Ayurveda Giuidelines
      • Ayurveda News
    • Homeopathy
      • Homeopathy Guidelines
      • Homeopathy News
    • Siddha
      • Siddha Guidelines
      • Siddha News
    • Unani
      • Unani Guidelines
      • Unani News
    • Yoga
      • Yoga Guidelines
      • Yoga News
  • State News
    • Andaman and Nicobar Islands
    • Andhra Pradesh
    • Arunachal Pradesh
    • Assam
    • Bihar
    • Chandigarh
    • Chattisgarh
    • Dadra and Nagar Haveli
    • Daman and Diu
    • Delhi
    • Goa
    • Gujarat
    • Haryana
    • Himachal Pradesh
    • Jammu & Kashmir
    • Jharkhand
    • Karnataka
    • Kerala
    • Ladakh
    • Lakshadweep
    • Madhya Pradesh
    • Maharashtra
    • Manipur
    • Meghalaya
    • Mizoram
    • Nagaland
    • Odisha
    • Puducherry
    • Punjab
    • Rajasthan
    • Sikkim
    • Tamil Nadu
    • Telangana
    • Tripura
    • Uttar Pradesh
    • Uttrakhand
    • West Bengal
  • Medical Education
    • Ayush Education News
    • Dentistry Education News
    • Medical Admission News
    • Medical Colleges News
    • Medical Courses News
    • Medical Universities News
    • Nursing education News
    • Paramedical Education News
    • Study Abroad
  • Industry
    • Health Investment News
    • Health Startup News
    • Medical Devices News
    • Pharma News
      • CDSCO (Central Drugs Standard Control Organisation) News
    • Pharmacy Education News
    • Industry Perspective
  • Home
  • Anesthesia
  • Anesthesia News
  • Association of...

Association of activated clotting time with hemorrhagic or thromboembolic events controversial and limited, suggests research

Written By : Dr Monish Raut |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2025-01-09T08:15:10+05:30  |  Updated On 9 Jan 2025 12:15 PM IST
Association of activated clotting time with hemorrhagic or thromboembolic events controversial and limited, suggests research
  • facebook
  • twitter
  • linkedin
  • whatsapp
  • Telegram
  • Email
Extracorporeal membrane oxygenation (ECMO) necessitates widespread anticoagulation to decrease the chances of thromboembolic events and circuit malfunctions. Nevertheless, it also poses an increased risk of significant bleeding, underscoring the crucial need for vigilant anticoagulation monitoring to prevent unfavorable outcomes. Recent systematic review and meta-analysis examined the association between activated clotting time (ACT)-guided anticoagulation monitoring and the occurrence of hemorrhagic or thromboembolic complications in patients receiving extracorporeal membrane oxygenation (ECMO) support.

Bleeding vs. Non-Bleeding ACT Studies

The review identified 8 studies reporting on ACT values in patients with and without bleeding, and 3 studies reporting on ACT values in patients with and without thrombosis. The meta-analysis of the 8 studies found no significant difference in mean ACT values between patients with and without bleeding (SMD = 0.69, 95% CI -0.05 to 1.43, p=0.069). However, there was high heterogeneity among the studies (I2=87.4%). After excluding one study that significantly contributed to the heterogeneity, the repeated meta-analysis still did not find a significant difference in ACT values between the groups (SMD = 0.40, 95% CI -0.01 to 0.82, p=0.058).

Thrombosis vs. Non-Thrombosis ACT Studies

The meta-analysis of the 3 studies reporting on thrombosis also did not find a significant difference in mean ACT values between patients with and without thrombotic events (SMD = 0.47, 95% CI -0.50 to 1.44, p=0.342), although there was high heterogeneity (I2=81.1%).

Use of ACT in ECMO

The review highlights that despite the widespread use of ACT for anticoagulation monitoring during ECMO, the evidence on its association with hemorrhagic or thromboembolic complications remains limited and controversial. Factors such as the timing of ACT measurements, as well as the intrinsic limitations of ACT (e.g. influence by hypothermia, platelet count/function, coagulation factors), may contribute to the inconsistent findings across studies. The authors conclude that further research is essential to elucidate the role of ACT in anticoagulation monitoring for ECMO patients. Prospective or randomized studies with standardized measurement protocols are needed to better understand the relationship between ACT and adverse events during ECMO support. Additionally, the development and evaluation of alternative anticoagulation monitoring strategies, such as anti-factor Xa and viscoelastic testing, may help clarify the most appropriate approach for this patient population.

Key Points

1. The systematic review and meta-analysis examined the association between activated clotting time (ACT)-guided anticoagulation monitoring and the occurrence of hemorrhagic or thromboembolic complications in patients receiving extracorporeal membrane oxygenation (ECMO) support.

2. The meta-analysis of 8 studies found no significant difference in mean ACT values between patients with and without bleeding, although there was high heterogeneity among the studies. After excluding one study, the repeated meta-analysis still did not find a significant difference in ACT values between the groups.

3. The meta-analysis of 3 studies reporting on thrombosis also did not find a significant difference in mean ACT values between patients with and without thrombotic events, although there was high heterogeneity.

4. The review highlights that despite the widespread use of ACT for anticoagulation monitoring during ECMO, the evidence on its association with hemorrhagic or thromboembolic complications remains limited and controversial.

5. Factors such as the timing of ACT measurements, as well as the intrinsic limitations of ACT (e.g. influence by hypothermia, platelet count/function, coagulation factors), may contribute to the inconsistent findings across studies.

6. The authors conclude that further research is essential to elucidate the role of ACT in anticoagulation monitoring for ECMO patients, and that prospective or randomized studies with standardized measurement protocols are needed. Additionally, the development and evaluation of alternative anticoagulation monitoring strategies, such as anti-factor Xa and viscoelastic testing, may help clarify the most appropriate approach for this patient population.

Reference –

Daniel Schwaiger et al. (2024). Association Of Activated Clotting Time-Guided Anticoagulation With Complications During Extracorporeal Membrane Oxygenation Support: A Systematic Review And Meta-Analysis.. *Journal Of Cardiothoracic And Vascular Anesthesia*. https://doi.org/10.1053/j.jvca.2024.09.003

anticoagulationactivated clotting timeACTadverse eventsbleedingthrombosismonitoringextracorporeal membrane oxygenationECMO
Dr  Monish  Raut
Dr Monish Raut

    MBBS, MD (Anaesthesiology), FNB (Cardiac Anaesthesiology)

    Dr Monish Raut is a practicing Cardiac Anesthesiologist. He completed his MBBS at Government Medical College, Nagpur, and pursued his MD in Anesthesiology at BJ Medical College, Pune. Further specializing in Cardiac Anesthesiology, Dr Raut earned his FNB in Cardiac Anesthesiology from Sir Ganga Ram Hospital, Delhi.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

    Show Full Article
    Next Story

    Editorial

    Aspirin Use in Male Smokers Aged 40-45 Years with Hypertension: Identifying the Ideal Candidates

    Aspirin Use in Male Smokers Aged 40-45 Years with Hypertension: Identifying the Ideal Candidates

    National Consensus 2025 on Role of Bisoprolol Across CV Continuum in Women: Top 10 Takeaways

    National Consensus 2025 on Role of Bisoprolol Across CV Continuum in Women: Top 10 Takeaways

    Relevance of Pioglitazone in Indian T2DM Care Continuum

    Relevance of Pioglitazone in Indian T2DM Care Continuum

    Azmarda Outperforms Generic Sacubitril/Valsartan in HFrEF Management, says new study

    Azmarda Outperforms Generic Sacubitril/Valsartan in HFrEF Management, says new study

    First Indian Consensus on Managing Refractory Gastroesophageal Reflux Disease Recommends Vonoprazan

    First Indian Consensus on Managing Refractory Gastroesophageal Reflux Disease Recommends Vonoprazan

    View All

    Journal Club Today

    Global Omega-3 Shortage Poses Serious Health and Environmental Risks: Study

    Global Omega-3 Shortage Poses Serious Health and Environmental Risks: Study

    View All

    Health News Today

    Health Bulletin 31/May/2025

    Health Bulletin 31/May/2025

    View All
    © 2022 All Rights Reserved.
    Powered By: Hocalwire
    X
    We use cookies for analytics, advertising and to improve our site. You agree to our use of cookies by continuing to use our site. To know more, see our Cookie Policy and Cookie Settings.Ok