Pain, Postoperative
Conditions
Keywords
Pain, Sedation, Surgery
Brief summary
It is difficult to assess pain and agitation in the NICU population because for a multitude of reasons including the pre-verbal nature of the patient population, the atypical pain response of premature infants, and the use of muscle relaxing medications that exclude motor response in pain assessments. Current assessment tools are based on physical exam and vital signs. The investigators propose to study the role of EEG and palmar conductance (PD) as additional tools in the assessment of pain and agitation
Detailed description
This is a prospective, non-interventional study designed to assess noxious-specific neurophysiologic responses and clinical signs following procedural pain in infants requiring hospitalization in the neonatal intensive care unit (NICU) following elective surgery. The main goal of the study is to develop a method that reliably quantifies the level of pain induced from clinically-required noxious procedures to infants hospitalized in the NICU. This method will use measures of neurophysiological, autonomic, and behavioral responses to non-noxious and clinically-required noxious stimuli in order to guide the pharmacological treatment of NICU patients with analgesic agents, sedatives and/or muscle relaxants. The investigators hypothesize that resting state activity and physiological responses to noxious and non-noxious stimuli provide a more reliable assessment of the level of pain of infants hospitalized in the NICU compared to behavioral-based pain scores.
Interventions
DEVICEWaveguard (TM) EEG cap
The device is an EEG cap - a non-invasive EEG positioning system used to quickly place a large number of surface electrodes in a quick and consistent manner on the head. The device will measure electrophysiological signals from the scalp at the time points in the study listed in the protocol.
DEVICEMicro Movement Sensor
This device is not FDA approved. This device is in clinical use for all age groups and used for research purposes by neurologists, physiologists and anesthesiologists. In this study, the device is used to monitor breathing and movement in children; the device is not used for validation purposes.
DEVICEPico Movement Sensor
This device is not FDA approved. This device is in clinical use for all age groups and used for research purposes by neurologists, physiologists and anesthesiologists. In this study, the device is used to monitor respiration rate and gross body movement in children. The device will not be used for validation purposes.
DEVICEQS Piezostimulator
This device is not FDA approved. This device is used for research purposes by neurologists and physiologists. It is a mechanical tactile stimulator for use in functional imaging experiments like MEG, fMRI or EEG. The stimulation is realized by using several different pin matrices. In this study, the device is used to stimulate the children's extremities in order to elicit somatosensory evoked responses.
DEVICEtactileTM sensory evaluator
This device is not FDA approved. This device is used for clinical and research purposes by neurologists and physiologists. It is used to stimulate the children's extremities in order to elicit somatosensory evoked responses.
Sponsors
Boston Children's Hospital
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
1 Hours to 6 Months
Healthy volunteers
No
Inclusion criteria
* All patients will be admitted to the NICU, and having a post-menstrual age of \>28 weeks. Participants will be divided into four groups according to the following criteria: Group A * Plan for major surgery anticipated to cause pain and agitation (i.e. esophageal atresia treatment); * Patients who are anticipated to receive prolonged post-surgical neuromuscular blockade Group B * Plan for major surgery anticipated to cause pain and agitation (i.e. bowel surgery); * Patients who are not anticipated to receive acute post-surgical neuromuscular blockade Group C Plan for minor surgery anticipated to cause pain and agitation (i.e. hernia repair); Group D No plan for surgery
Exclusion criteria
* Confirmed or suspected clinical seizures * Metabolic abnormalities or inborn error of metabolism * Skin abrasions or wounds located at the site of research sensor placement i.e. scalp, which interfere with the application of electrodes
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Noxious Stimuli Results | Up to 1 year | To assess pain-specific brain activity and autonomic responses post surgery in response to an acute noxious procedure in newborn infants admitted to the NICU. This outcome will be correlated with current behavioral and physiological based pain assessment tools as follows: Procedural-specific brain activity in infants with varying conditions with pre or post-operative pain. EEG: amplitude of noxious-event related potential evoked by a time-locked noxious stimulus. Pain-specific electro-dermal activity (EDA), electromyography (EMG) and subdermal skin flow; Pain-evoked behavioral measures including: Body movement; Eye squeeze, brow bulge and nasolabial furrow duration. Pain-evoked physiological measures including: Respiration rate; Heart rate; Blood pressure; Oxygen saturation; Observational pain scores (PIPP); EMG activity. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Resting State Results | Up to 1 year | Characterize resting state activity in post-operative or control subjects as follows: Baseline brain (EEG) activity (power spectra of baseline EEG signal) in post operative or control subjects. Baseline EDA, EMG and subdermal skin flow; Baseline behavioral measures including: Presence of body movement, eye squeeze, brow bulge and nasolabial furrow. Baseline physiological measures including: Respiration rate; Heart rate; Blood pressure; Oxygen saturation; Observational pain scores (PIPP). The relationship with resting brain activity, electrodermal activity, behavior, physiological, and observational pain scores will be evaluated. |
Countries
United States
Outcome results
None listed