# Circadian Disturbances After Breast Cancer Surgery

> **NCT01171508** · — · COMPLETED · sponsor: **Melissa Voigt Hansen** · enrollment: 12 (actual)

## Conditions studied

- Circadian Rhythm Disorders
- Anxiety
- Breast Cancer

## Interventions

- **DEVICE:** Wrist-Actigraph - Octagonal Basic Motionlogger, Ambulatory monitoring Inc, New York, USA
- **DEVICE:** Polysomnograph - Embla A10 (Medcare, Reykjavik, Iceland)
- **DEVICE:** Holter monitor - Medilog AR12 (Oxford Instruments, Oxford, England)
- **PROCEDURE:** Urine 6-sulphatoxymelatonin (aMT6s)
- **OTHER:** Karolinska Sleepiness Scale
- **OTHER:** Visual Analog Scale and 10 point-scales to measure fatigue, general well-being, subjective sleep and pain
- **OTHER:** Sleep-diary

## Key facts

- **NCT ID:** NCT01171508
- **Lead sponsor:** Melissa Voigt Hansen
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2011-02
- **Primary completion:** 2011-11
- **Final completion:** 2011-11
- **Target enrollment:** 12 (ACTUAL)
- **Last updated:** 2013-03-08


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01171508

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01171508, "Circadian Disturbances After Breast Cancer Surgery". Retrieved via AI Analytics 2026-07-19 from https://api.ai-analytics.org/clinical/NCT01171508. Licensed CC0.

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