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Severity Postoperative Pain Prediction

Predicting Severity of Postoperative Pain After Surgery

Status
Terminated
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT00638404
Enrollment
300
Registered
2008-03-19
Start date
2007-08-31
Completion date
2009-09-30
Last updated
2018-08-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anxiety, Pain, Postoperative Pain

Keywords

Preoperative somatic questions, Preoperative audio tone evaluations, Preoperative anxiety and previous experience with postop pain

Brief summary

A simple preoperative evaluation assessing level of anxiety, anticipated pain, and intensity rating of audio tone will predict the severity of postoperative pain after surgery.

Detailed description

The purpose of this study would be to determine the predictive value of a simple to perform preoperative evaluation in assessing level of anxiety, anticipated pain and the intensity rating of an audio tone to predict level of postoperative pain after surgery. Study Design: A total of 400 evaluable patients will be studied using the various surgical populations listed. For statistical purposes, the following will be the surgical population by procedure. Two hundred healthy ASA I-II women scheduled for elective cesarean section, one hundred scheduled for elective postpartum tubal ligations, and one hundred scheduled for elective inpatient gynecological surgeries (such as total vaginal hysterectomy, total abdominal hysterectomy) will be consented and enrolled in the study. Normal baseline vital signs will be obtained and recorded as part of usual preoperative assessment for these patients. The patients will be asked about their current level of pain and to rate the intensity of a series of audio tones. At 18-24 hours postoperatively, and again at 36-48 hours postoperatively if applicable, research personnel will evaluate the severity of postoperative pain the patient has at rest and with movement (from supine to sitting upright), using a sliding pain scale from 0 to 100 mm, with 0 being no pain and 100 being the worst pain ever. Information on drug administered in the preoperative, intraoperative and postoperative period will be collected and recorded. The subject can also choose to allow us to follow-up with them in the future to evaluate current residual postoperative pain levels as needed.

Interventions

None listed

Sponsors

Wake Forest University
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Healthy ASA physical status class 1 or 2 * Aged 18 years or above * Pregnant with intrauterine pregnancy of at least 36 weeks for cesarean sections

Exclusion criteria

* ASA \>3 * \< 36 weeks for Cesarean Section * \< 18 years of age

Design outcomes

Primary

MeasureTime frameDescription
Evoked Pain at 24 Hours VASevoked pain at 24 hoursOutcome measure 0-100 Visual analog scale at 24 hours postoperatively, VAS of 0= no pain up to 100 =most severe pain

Secondary

MeasureTime frameDescription
Anticipated Pain Medication Requirement24 hoursmeasured on a scale of 0-5, with 0=no anticipated pain medication needed up to 5 =most anticipated pain medication required
Anticipated Postoperative Pain at Preoperative Evaluationanticipated postoperative painanticipated postoperative pain on a scale of 0-100mm with 0=no anticipated pain at all up to 100= worst anticipated pain imaginable
Anxietyanticipated anxiety prior to surgerymeasure of anticipated anxiety for on a scale of 0-100, with 0= not anxious at all up to 100 = most anxious

Countries

United States

Participant flow

Recruitment details

200 Elective cesarean sections and 100 gynecological patients were enrolled prior to their surgery with presurgical testing completed. All subjects were then also seen postoperatively for followup

Pre-assignment details

no randomization, only observational study

Participants by arm

ArmCount
1-elective Cesarean Sections
Elective Cesarean Sections-this portion completed
192
3-inpatient Gynecologic Procedures
Any in-patient gynecologic procedure- this portion completed
100
Total292

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyPhysician Decision80

Baseline characteristics

Characteristic1-elective Cesarean Sections3-inpatient Gynecologic ProceduresTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
192 Participants100 Participants292 Participants
Age, Continuous30 years
STANDARD_DEVIATION 4.8
44.5 years
STANDARD_DEVIATION 9
34.95 years
STANDARD_DEVIATION 9.5
Race/Ethnicity, Customized
African American
44 Participants18 Participants62 Participants
Race/Ethnicity, Customized
Hispanic
8 Participants2 Participants10 Participants
Race/Ethnicity, Customized
White
140 Participants80 Participants220 Participants
Region of Enrollment
United States
192 Participants100 Participants292 Participants
Sex: Female, Male
Female
192 Participants100 Participants292 Participants
Sex: Female, Male
Male
0 Participants0 Participants0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1920 / 100
other
Total, other adverse events
0 / 1920 / 100
serious
Total, serious adverse events
0 / 1920 / 100

Outcome results

Primary

Evoked Pain at 24 Hours VAS

Outcome measure 0-100 Visual analog scale at 24 hours postoperatively, VAS of 0= no pain up to 100 =most severe pain

Time frame: evoked pain at 24 hours

Population: evoked pain outcome-measured on a scale of 0=no pain up to 100=most severe pain imaginable.

ArmMeasureValue (MEAN)Dispersion
1-elective Cesarean SectionEvoked Pain at 24 Hours VAS44 units on a scaleStandard Deviation 26
3-inpatient Gynecologic ProceduresEvoked Pain at 24 Hours VAS49.3 units on a scaleStandard Deviation 30.7
p-value: <0.001Spearman Correlation
p-value: <0.001Spearman Correlation
p-value: <0.001Spearman Correlation
p-value: <0.001Spearman Correlation
Secondary

Anticipated Pain Medication Requirement

measured on a scale of 0-5, with 0=no anticipated pain medication needed up to 5 =most anticipated pain medication required

Time frame: 24 hours

ArmMeasureValue (MEDIAN)
1-elective Cesarean SectionAnticipated Pain Medication Requirement3 units on a scale
3-inpatient Gynecologic ProceduresAnticipated Pain Medication Requirement3 units on a scale
Comparison: preoperative questionnaire evaluating anticipated amount of pain medication potentially needed postoperatively; 0= none at all up to 100=as much as possiblep-value: <0.001Spearman Correlation
Secondary

Anticipated Postoperative Pain at Preoperative Evaluation

anticipated postoperative pain on a scale of 0-100mm with 0=no anticipated pain at all up to 100= worst anticipated pain imaginable

Time frame: anticipated postoperative pain

ArmMeasureValue (MEAN)Dispersion
1-elective Cesarean SectionAnticipated Postoperative Pain at Preoperative Evaluation57 units on a scaleStandard Deviation 26
3-inpatient Gynecologic ProceduresAnticipated Postoperative Pain at Preoperative Evaluation60.8 units on a scaleStandard Deviation 27.2
p-value: <0.001Spearman Correlation
Secondary

Anxiety

measure of anticipated anxiety for on a scale of 0-100, with 0= not anxious at all up to 100 = most anxious

Time frame: anticipated anxiety prior to surgery

ArmMeasureValue (MEAN)Dispersion
1-elective Cesarean SectionAnxiety52 units on a scaleStandard Deviation 32
3-inpatient Gynecologic ProceduresAnxiety57.5 units on a scaleStandard Deviation 34.8
p-value: <0.001Spearman Correlation

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026