Feasibility of Ventilation Detection Via Standard Defibrillator Pads in Mechanically Ventilated Pediatric Patients (Vent Detection)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00628875
Recruitment Status : Completed
First Posted : March 5, 2008
Last Update Posted : April 14, 2010
Laerdal Medical
Information provided by:
Children's Hospital of Philadelphia

Brief Summary:

This study is a prospective, observational case series of a convenience sample of mechanically ventilated pediatric patients in the Pediatric ICU, Progressive Care Unit and Operating Room at the Children's Hospital of Philadelphia.

We propose to observe, measure and report the accuracy, precision and bias of defibrillator electrode pads to detect breathing in stable but critically ill and mechanically ventilated children. This study will provide preliminary data to inform the resuscitation research community and assist development of evidence-based pediatric resuscitation guidelines in the future.

Condition or disease
Respiration, Artificial

Detailed Description:

Context: Resuscitation (CPR) guidelines recommend target values for rate and depth of rescue breathing and chest compressions. Defibrillator electrode pads can accurately detect the size, rate, and speed of machine-generated breaths in adults. The accuracy, precision, bias, and ability of the defibrillator electrode pads to detect the size, rate and speed of breathing in children have not been studied.

Objectives: The primary objective is to evaluate the accuracy, precision, bias and ability of the pads and defibrillator to detect the rate and depth of breathing in critically ill children on breathing machines. Important secondary objectives include reporting the accuracy, precision and bias of the measurement of the speed of the breath, measurement variability, and impact of alternative defibrillator electrode pad location on the chest.

Study Design/Setting/Participants:

Prospective, pilot, observational study in the Pediatric Intensive Care Unit and Progressive Care Unit at the Children's Hospital of Philadelphia. The participants are all patients in the PICU and Progressive Care Unit (PCU), 6 months to 17 years, who are supported by their clinical management team with a tracheal tube, standard breathing machine, and standard ICU monitoring systems.


Standard defibrillator electrode pads will be placed on the patient's chest in two typical pediatric configurations, and data will be recorded for 5 minutes in each configuration. These defibrillator electrode pads will be used exclusively for monitoring, as additions to the standard ICU monitoring.

Study Measures:

The primary outcome variable will be the successful detection of breathing rate. We will compare the accuracy, precision and bias of detection of each breath of > 2 ml/kg by the defibrillator electrode pads compared with the "gold standard" mechanical ventilator pneumotachometer detected breaths. Secondary outcome variables will include defibrillator electrode pad detection of breathing depth and speed compared to standard ICU monitors (considered the gold standard). We will also study the effect of defibrillator electrode pad location on the accuracy, precision, bias and ability to detect breathing rate, depth, and speed.

Study Type : Observational
Actual Enrollment : 28 participants
Observational Model: Case-Only
Time Perspective: Prospective
Official Title: "Feasibility of Ventilation Detection Using Thoracic Impedence Acquired Via Standard Defibrillator Electrode Pads in Mechanically Ventilated Pediatric Patients"
Study Start Date : January 2007
Actual Primary Completion Date : July 2009
Actual Study Completion Date : December 2009

Primary Outcome Measures :
  1. This is a pilot study to gather preliminary data. The primary endpoint is the accuracy of defibrillator pad detection of breaths >2ml/kg, compared to the gold standard pneumotachometer detection of breaths. [ Time Frame: 1 year ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   6 Months to 17 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Pediatric patients admitted to the Pediatric Intensive care Unit, Progressive Care Unit or Operating Room at the Children's Hospital of Philadelphia

Inclusion Criteria:

  1. Patients age 6 months - 17 years with:
  2. Artificial airway
  3. Mechanical ventilation (PCV or VCV)
  4. Hemodynamic stability to participate in the study, as determined by the clinical treatment team.
  5. Parental/guardian permission (informed consent) and if appropriate, child assent.

Exclusion Criteria:

  1. Patients with chest tubes
  2. High frequency ventilation (Jet or Oscillation)
  3. Airway Pressure Release ventilation
  4. Extracorporeal membrane oxygenation (ECMO)
  5. Significant chest wall abnormality (e.g. Vertebral Expandable Prosthetic Titanium Rib (VEPTR) or device precluding typical placement of defibrillator electrode pads)
  6. Altered skin integrity in areas where defibrillator electrode pads would be placed

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00628875

United States, Pennsylvania
Children's Hospital of Philadelphia
Philadelphia, Pennsylvania, United States, 19104
Sponsors and Collaborators
Children's Hospital of Philadelphia
Laerdal Medical
Principal Investigator: Kathryn Roberts, MSN, RN, CRNP, CCRN, CCNS Children's Hospital of Philadelphia

Responsible Party: Kathryn Roberts, Children's Hospital of Philadelphia Identifier: NCT00628875     History of Changes
Other Study ID Numbers: 2006-10-5022
First Posted: March 5, 2008    Key Record Dates
Last Update Posted: April 14, 2010
Last Verified: April 2010

Keywords provided by Children's Hospital of Philadelphia:
mechanical ventilation
thoracic impedence
defibrillator pads
ventilation detection
pediatric ventilation