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Dicrotic Notch and Hypotension at Caesarean Under Spinal Anaesthesia

NCT02437799 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 20

Last updated 2016-10-13

No results posted yet for this study

Summary

BACKGROUND:

Hypotension occurs commonly during spinal anaesthesia for caesarean section and may result in detrimental effects to the mother and foetus. A previous pilot study where images of the pulse oximeter waveform study were taken, found that the dicrotic wave moved away from the systolic wave during the onset of hypotension.

AIMS:

The investigators wish to download electronic data which describe the pulse oximeter pulse wave to more accurately assess movement of the diastolic wave relative to the systolic wave during spinal anaesthesia for caesarean section.

METHODOLOGY:

20 women undergoing caesarean section under spinal anaesthesia will be recruited by informed consent for this observational study. Data downloaded from the pulse oximeter will be analysed to identify movement of the dicrotic wave relative to the systolic wave and this will be related to changes in blood pressure.

EXPECTED OUTCOMES:

The investigators will establish best way to analyse changes in the pulse oximeter waveform and the relationship between changes in pulse oximeter waveform morphology and the onset of hypotension during spinal anaesthesia for caesarean section.

IMPLICATIONS:

Analysis of movement of the dicrotic wave could be used to anticipate and thus avoid severe hypotension during spinal anaesthesia for caesarean section.

Conditions

Interventions

OTHER

Dicrotic wave analysis

We will download data from the pulse oximeter that is being used to monitor the patient during their surgery.

Sponsors & Collaborators

  • Sheffield Teaching Hospitals NHS Foundation Trust

    lead OTHER

Principal Investigators

  • ian Wrench, MBChB,FRCA · Sheffield Teaching Hospitals NHS Foundation Trust

Eligibility

Min Age
18 Years
Max Age
50 Years
Sex
FEMALE
Healthy Volunteers
No

Timeline & Regulatory

Start
2015-09-30
Primary Completion
2015-12-31
Completion
2015-12-31

Countries

  • United Kingdom

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02437799 on ClinicalTrials.gov