# Coagulation and Vitamin K in Head and Neck Microvascular Free Flap Surgery

> **NCT04517461** · — · COMPLETED · sponsor: **Region Skane** · enrollment: 40 (actual)

## Conditions studied

- Head and Neck Cancer
- Intraoperative Complications
- Coagulation Disorder, Blood
- Vitamin K Deficiency
- Thrombosis
- Anticoagulants and Bleeding Disorders
- Head and Neck Procedural Complication

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT04517461
- **Lead sponsor:** Region Skane
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-09-15
- **Primary completion:** 2021-09-15
- **Final completion:** 2021-10-01
- **Target enrollment:** 40 (ACTUAL)
- **Last updated:** 2024-02-29


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04517461

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04517461, "Coagulation and Vitamin K in Head and Neck Microvascular Free Flap Surgery". Retrieved via AI Analytics 2026-06-04 from https://api.ai-analytics.org/clinical/NCT04517461. Licensed CC0.

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