NCT02417038

Brief Summary

Respiratory depression occurs in labor and delivery; noticeably when neuraxial opioids are given.Pathophysiological respiratory depression -failure to respond to hypercapnia or hypoxia - is challenging to measure clinically.American Society of Anesthesiologist guidelines recommend suitable respiratory monitoring for 24 hours post cesarean delivery (CD). Use of capnograph will enable us to assess breath-by-breathe respiration in a population receiving neuraxial opioids - potentially at risk for respiratory depression. Our aim is to assess our ability to capture maternal postpartum respiratory parameters in a cohort following opioid neuraxial administration for CD.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
80

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Apr 2015

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2015

Completed
9 days until next milestone

First Submitted

Initial submission to the registry

April 10, 2015

Completed
5 days until next milestone

First Posted

Study publicly available on registry

April 15, 2015

Completed
1 year until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 15, 2016

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

April 15, 2016

Completed
Last Updated

May 4, 2017

Status Verified

May 1, 2017

Enrollment Period

1 year

First QC Date

April 10, 2015

Last Update Submit

May 3, 2017

Conditions

Keywords

Postoperative Respiratory MonitoringNeuraxial Opioid Administration for Cesarean Delivery

Outcome Measures

Primary Outcomes (1)

  • CO2 monitoring

    The Capnostream is a portable CO2 monitor with a pulse oximetry module to measure and record SpO2 and heart rate and provides waveform patterns for respratory rate and EtCO2 measurement.

    24 hrs

Interventions

The Capnostream capnograph (is registered with the FDA) is supplied by Covidien. The Capnostream is a portable CO2 monitor with a pulse oximetry module to measure and record SpO2 (oxygen saturation) and heart rate continuously. The Capnostream provides waveform patterns for respiratory rate and EtCO2 measurement.

Also known as: Capnograph

Eligibility Criteria

Age18 Years - 45 Years
Sexfemale
Healthy VolunteersYes
Age GroupsAdult (18-64)
Sampling MethodProbability Sample
Study Population

Women undergoing cesarean delivery with neuraxial anesthesia.

You may qualify if:

  • American Society of Anesthesiologists physical status class I or II
  • Age between 18 and 45
  • Gestational age greater than 37 completed weeks
  • Singleton pregnancy.

You may not qualify if:

  • Contraindication for neuraxial analgesia (bleeding diathesis, neuropathy, severe scoliosis, previous spine surgery, local anesthetic allergy)
  • Allergies to postoperative medication (opioids, NSAIDs, acetaminophen)
  • Chronic opioid use
  • Opioid administration in the previous 12 hours
  • Inability to adequately understand the consent form
  • Blocked nose or nasal deformity.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Lucile Packard Children's Hospital

Palo Alto, California, 94304, United States

Location

Related Publications (11)

  • Clerici C. [Modifications of respiratory function during pregnancy]. Rev Pneumol Clin. 1999 Oct;55(5):307-11. French.

    PMID: 10637899BACKGROUND
  • Kolarzyk E, Szot WM, Lyszczarz J. Lung function and breathing regulation parameters during pregnancy. Arch Gynecol Obstet. 2005 Jun;272(1):53-8. doi: 10.1007/s00404-004-0691-1. Epub 2004 Dec 23.

    PMID: 15616844BACKGROUND
  • Trakada G, Tsapanos V, Spiropoulos K. Normal pregnancy and oxygenation during sleep. Eur J Obstet Gynecol Reprod Biol. 2003 Aug 15;109(2):128-32. doi: 10.1016/s0301-2115(03)00100-3.

    PMID: 12860327BACKGROUND
  • Sultan P, Gutierrez MC, Carvalho B. Neuraxial morphine and respiratory depression: finding the right balance. Drugs. 2011 Oct 1;71(14):1807-19. doi: 10.2165/11596250-000000000-00000.

    PMID: 21942973BACKGROUND
  • Grindheim G, Toska K, Estensen ME, Rosseland LA. Changes in pulmonary function during pregnancy: a longitudinal cohort study. BJOG. 2012 Jan;119(1):94-101. doi: 10.1111/j.1471-0528.2011.03158.x. Epub 2011 Oct 18.

    PMID: 22004272BACKGROUND
  • Kato R, Shimamoto H, Terui K, Yokota K, Miyao H. Delayed respiratory depression associated with 0.15 mg intrathecal morphine for cesarean section: a review of 1915 cases. J Anesth. 2008;22(2):112-6. doi: 10.1007/s00540-007-0593-z. Epub 2008 May 25.

    PMID: 18500606BACKGROUND
  • Pan PH, James CF. Anesthetic-postoperative morphine regimens for cesarean section and postoperative oxygen saturation monitored by a telemetric pulse oximetry network for 24 continuous hours. J Clin Anesth. 1994 Mar-Apr;6(2):124-8. doi: 10.1016/0952-8180(94)90009-4.

    PMID: 8204230BACKGROUND
  • Wilson DL, Walker SP, Fung AM, O'Donoghue F, Barnes M, Howard M. Can we predict sleep-disordered breathing in pregnancy? The clinical utility of symptoms. J Sleep Res. 2013 Dec;22(6):670-8. doi: 10.1111/jsr.12063. Epub 2013 Jun 10.

    PMID: 23745721BACKGROUND
  • Silva GE, Vana KD, Goodwin JL, Sherrill DL, Quan SF. Identification of patients with sleep disordered breathing: comparing the four-variable screening tool, STOP, STOP-Bang, and Epworth Sleepiness Scales. J Clin Sleep Med. 2011 Oct 15;7(5):467-72. doi: 10.5664/JCSM.1308.

    PMID: 22003341BACKGROUND
  • Carvalho B. Respiratory depression after neuraxial opioids in the obstetric setting. Anesth Analg. 2008 Sep;107(3):956-61. doi: 10.1213/ane.0b013e318168b443.

    PMID: 18713913BACKGROUND
  • Weiniger CF, Akdagli S, Turvall E, Deutsch L, Carvalho B. Prospective Observational Investigation of Capnography and Pulse Oximetry Monitoring After Cesarean Delivery With Intrathecal Morphine. Anesth Analg. 2019 Mar;128(3):513-522. doi: 10.1213/ANE.0000000000003503.

MeSH Terms

Conditions

Respiratory Insufficiency

Condition Hierarchy (Ancestors)

Respiration DisordersRespiratory Tract Diseases

Study Officials

  • Brendan Carvalho, MD

    Stanford University

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principle Investigator

Study Record Dates

First Submitted

April 10, 2015

First Posted

April 15, 2015

Study Start

April 1, 2015

Primary Completion

April 15, 2016

Study Completion

April 15, 2016

Last Updated

May 4, 2017

Record last verified: 2017-05

Locations