Related Experiment Video
Updated: Mar 7, 2026

Assessment of Plasma Coagulation on Liver Tissue in a Large Animal Model In Vivo
Published on: August 4, 2018
The effectiveness of intravenous vitamin K in correcting cirrhosis-associated coagulopathy
Ryan M Rivosecchi1, Sandra L Kane-Gill2, Jeffrey Garavaglia3
1Department of Pharmacy, UPMC Presbyterian Hospital, Pittsburgh, PA, USA.
Insights
Intravenous vitamin K may not effectively correct coagulopathy in cirrhosis patients. Many patients did not show significant INR reduction, suggesting limited benefit for this condition.
Area of Science:
- Hepatology
- Clinical Pharmacology
Background:
- Cirrhosis often leads to coagulopathy, increasing bleeding risk.
- Vitamin K is crucial for synthesizing clotting factors, but its efficacy in cirrhosis is debated.
Purpose of the Study:
- To assess the effectiveness of intravenous vitamin K in improving INR levels in patients with cirrhosis.
- To determine if IV vitamin K can correct the coagulopathy associated with liver cirrhosis.
Main Methods:
- Retrospective analysis of 96 cirrhotic patients with INR > 1.5, not on anticoagulation.
- Intravenous vitamin K administration was the intervention.
- Effectiveness defined as a 30% INR decrease or INR ≤1.5.
Main Results:
- The average INR decrease was 0.31.
- A significant portion of patients (62.3%) did not achieve even a 10% INR reduction.
- Only 16.7% of patients met the primary endpoint for effectiveness.
Conclusions:
- Intravenous vitamin K showed limited efficacy in correcting coagulopathy in this cohort of cirrhotic patients.
- The routine use of IV vitamin K for coagulopathy in cirrhosis may not be a beneficial therapeutic strategy.
Objectives:
The goal of this study was to evaluate the effectiveness of intravenous (IV) vitamin K in cirrhosis.
Methods:
This was a retrospective study of cirrhotic patients, not on anticoagulation, with administration of IV vitamin K and a baseline INR > 1.5. The primary outcome was the effectiveness of therapy defined by a 30% decrease in INR or a reduction in INR to an absolute value of ≤1.5.
Key Findings:
A total of 96 patients were included in the cohort. There was an average decrease in INR of 0.31; however, 60 patients (62.3%) failed to achieve at least a 10% decrease. Sixteen patients (16.7%) met the primary effectiveness endpoint.
Conclusions:
The use of IV vitamin K to correct coagulopathy of cirrhosis may not be beneficial.
Related Concept Videos
Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Venous Thrombosis III: Interprofessional Care
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Venous Thrombosis IV: Nursing Management
Esophageal Varices-II: Clinical Features and Management
In the initial assessment, a thorough review of the patient's medical history is vital to identify risk factors such as liver disease, alcohol...
Effect of Hepatic Disease on Pharmacokinetics: Drug Dosing and Hepatic Blood Flow

