benzocaine and Pain

benzocaine has been researched along with Pain in 51 studies

Benzocaine: A surface anesthetic that acts by preventing transmission of impulses along NERVE FIBERS and at NERVE ENDINGS.
dextran sulfate sodium : An organic sodium salt of dextran sulfate. It induces colitis in mice.
benzocaine : A benzoate ester having 4-aminobenzoic acid as the acid component and ethanol as the alcohol component. A surface anaesthetic, it is used to suppress the gag reflex, and as a lubricant and topical anaesthetic on the larynx, mouth, nasal cavity, respiratory tract, oesophagus, rectum, urinary tract, and vagina.

Pain: An unpleasant sensation induced by noxious stimuli which are detected by NERVE ENDINGS of NOCICEPTIVE NEURONS.

Research

Studies (51)

Authors

Clinical Trials (6)

Trial Overview

Trial Outcomes

Stage I: Duration of Anesthesia as Measured by Heat Sensation Threshold (QST Heat) for One Spray CTY-5339-A Compared to One Spray CTY-5339-CB Compared to One Spray CTY-5339-P (Placebo: Vehicle Control)

"The duration of effect, was defined as the time from onset to treatment failure, as measured by QST Heat score. QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point. The QST Heat-based Duration of effect was calculated by the length of time in minutes from onset of anesthesia to the absence of anesthesia where Onset of anesthesia was defined by PPT unless specific QST thresholds were not met. After Onset had been established, absence of analgesia or offset was the first of two time points with consecutive occurrences of regression or absence of analgesia. Reports of QST heat pain temperature by ≥ 3 °C of the Baseline QST indicated analgesia; while a report of similar (<3 °C) than Baseline indicated regression or absence of analgesia. Stage I outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage I: Duration of Anesthesia as Measured by Pin Prick Test (PPT) for One Spray CTY-5339-A Compared to One Spray CTY-5339-CB Compared to One Spray CTY-5339-P (Placebo: Vehicle Control)

"The duration of effect, was defined as the length of time in minutes from onset of anesthesia to the absence of anesthesia.Onset was the time point at which the PPT average pain score was less than the Baseline PPT average score by any amount. Also, in 10 minutes or less, the subject must have had a lower PPT average pain score of ≥ 1 unit than Baseline. Absence of anesthesia was defined as follows: After Onset had been established, absence was the first of two time points with consecutive occurrences of regression of absence of analgesia. Reports of less pain by ≥1 unit than Baseline indicated analgesia; while a report of similar (< 1 unit) or more pain than Baseline indicated regression or absence of analgesia. The minimum onset time was 1 minute. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage I outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage I: Duration of Minimal Pain for Pin Prick Test (PPT) (≤2 on Numerical Rating Scale Pain Scale)

"Response at a time point is defined as having the PPT average pain score of ≤2. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage I outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage I: Onset of Anesthesia for Heat Sensation Threshold (QST Heat)

"Onset of anesthesia was defined by Pin Prick Test (PPT) unless specific QST thresholds were not met.~If the PPT Onset was 5 minutes or less, then QST must have been greater than the Baseline QST temperature at 5 minutes by any amount and QST must have been ≥ 3 °C of the Baseline QST at 5 or 10 minutes.~If the PPT Onset was 10 minutes, then QST must have been ≥ 3 °C of the Baseline QST temperature at 10 minutes.~If PPT did not achieve Onset, then QST alone could have achieved onset at either 5 or 10 minutes if QST was greater than the Baseline QST temperature at 5 or 10 minutes by any amount and the QST was ≥ 3 °C of the Baseline QST at 5 or 10 minutes.~QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage I outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage I: Onset of Anesthesia for Pin Prick Test (PPT)

"Onset of anesthesia was the time point at which the PPT average pain score was less than the Baseline PPT average score by any amount. Also, in 10 minutes or less, the subject must have had a lower PPT average pain score of ≥ 1 unit than the Baseline PPT. Onset was expected to be between 1 and 5 minutes. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage I outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage I: Percentage of Subjects Reaching Maximum Heat for Heat Sensation Threshold (QST Heat)

"QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point. Reaching maximum heat for QST Heat was defined as subjects reaching the maximum temperature without reporting pain at one or more time points.~Stage I outcome." (NCT03233737)
Timeframe: Any time within one hour post-application

Stage I: Percentage of Subjects Reaching Minimal Pain on Pin Prick Test (PPT) (≤2 on Numerical Rating Scale Pain Scale)

"Response is defined as a subject having a PPT average pain score of ≤2 recorded at any single time point where PPT was performed. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage I outcome." (NCT03233737)
Timeframe: Any time within one hour post-application

Stage II: Duration of Anesthesia as Measured by Heat Sensation Threshold (QST Heat) for One Spray CTY-5339-A Compared to One Spray CTY-5339-CB

"The duration of effect, was defined as the time from onset to treatment failure, as measured by QST Heat score. QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point. The QST Heat-based Duration of effect was calculated by the length of time in minutes from onset of anesthesia to the absence of anesthesia where Onset of anesthesia was defined by PPT unless specific QST thresholds were not met. After Onset had been established, absence of analgesia or offset was the first of two time points with consecutive occurrences of regression or absence of analgesia. Reports of QST heat pain temperature by ≥ 3 °C of the Baseline QST indicated analgesia; while a report of similar (<3 °C) than Baseline indicated regression or absence of analgesia. Stage" (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Duration of Anesthesia as Measured by Pin Prick Test (PPT) for One Spray CTY-5339-A Compared to One Spray CTY-5339-CB

"The duration of effect, was defined as the length of time in minutes from onset of anesthesia to the absence of anesthesia.Onset was the time point at which the PPT average pain score was less than the Baseline PPT average score by any amount. Also, in 10 minutes or less, the subject must have had a lower PPT average pain score of ≥ 1 unit than Baseline. Absence of anesthesia was defined as follows: After Onset had been established, absence was the first of two time points with consecutive occurrences of regression of absence of analgesia. Reports of less pain by ≥1 unit than Baseline indicated analgesia; while a report of similar (< 1 unit) or more pain than Baseline indicated regression or absence of analgesia. The minimum onset time was 1 minute. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Duration of Minimal Pain for Pin Prick Test (PPT) (≤2 on Numerical Rating Scale Pain Scale)

"Response at a time point is defined as having the PPT average pain score of ≤2. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Onset of Anesthesia for Heat Sensation Threshold (QST Heat)

"Onset of anesthesia was defined by Pin Prick Test (PPT) unless specific QST thresholds were not met.~If the PPT Onset was 5 minutes or less, then QST must have been greater than the Baseline QST temperature at 5 minutes by any amount and QST must have been ≥ 3 °C of the Baseline QST at 5 or 10 minutes.~If the PPT Onset was 10 minutes, then QST must have been ≥ 3 °C of the Baseline QST temperature at 10 minutes.~If PPT did not achieve Onset, then QST alone could have achieved onset at either 5 or 10 minutes if QST was greater than the Baseline QST temperature at 5 or 10 minutes by any amount and the QST was ≥ 3 °C of the Baseline QST at 5 or 10 minutes.~QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Onset of Anesthesia for Pin Prick Test (PPT)

"Onset of anesthesia was the time point at which the PPT average pain score was less than the Baseline PPT average score by any amount. Also, in 10 minutes or less, the subject must have had a lower PPT average pain score of ≥ 1 unit than the Baseline PPT. Onset was expected to be between 1 and 5 minutes. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Percentage of Subjects Reaching Maximum Heat for Heat Sensation Threshold (QST Heat)

"QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point. Reaching maximum heat for QST Heat was defined as subjects reaching the maximum temperature without reporting pain at one or more time points.~Stage II outcome." (NCT03233737)
Timeframe: Any time within one hour post-application

Stage II: Percentage of Subjects Reaching Minimal Pain on Pin Prick Test (PPT) (≤2 on Numerical Rating Scale Pain Scale)

"Response is defined as a subject having a PPT average pain score of ≤2 recorded at any single time point where PPT was performed. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage II outcome." (NCT03233737)
Timeframe: Any time within one hour post-application

Stage I: Percentage of Responders for Heat Sensation Threshold (QST Heat) at Each Time Point

"Response at a time point is defined as an increase of QST heat pain temperature by ≥ 3 degrees C compared to the Baseline QST. QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage I outcome." (NCT03233737)
Timeframe: Time of application up to one hour post-application

Stage I: Percentage of Responders for Pin Prick Test (PPT) at Each Time Point

"Response at at time point is defined as when the PPT average pain score was less than the Baseline PPT average score by any amount. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage I outcome." (NCT03233737)
Timeframe: Time of application up to one hour post-application

Stage I: Sum of Pain Intensity Differences (SPID) for Pin Prick Test (PPT) (Post-hoc)

"SPID was calculated as a sum of the delta PPT scores at each time point until the designated time point. The delta PPT score is defined as the change in PPT score from baseline. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~The total possible scale range was from -100 (best) to +100 (worst) for SPID at the 30 minute time point, and from -160 (best) to +160 (worst) for SPID at the 60 minute time point Lower scores signify a better outcome (less sensitive to pain than at baseline = less pain with therapy = therapy was more effective).~Stage I outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage I: Sum of Temperature Differences (STID) for Heat Sensation Threshold (QST Heat) (Post-hoc)

"STID was calculated as a sum of the delta QST Heat scores at each time point until the designated time point. The delta QST Heat score is defined as the change in QST Heat score from baseline. QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~The total possible scale range was from -155 ºC (best) to +155 ºC (worst) for STID at the 30 minute time point, and from -248 ºC (best) to +248 ºC (worst) for SPID at the 60 minute time point Lower scores signify a better outcome (less sensitive to pain than at baseline = less pain with therapy = therapy was more effective).~Stage I outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Percentage of Responders for Heat Sensation Threshold (QST Heat) at Each Time Point

"Response at a time point is defined as an increase of QST heat pain temperature by ≥ 3 degrees C compared to the Baseline QST.~QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Percentage of Responders for Pin Prick Test (PPT) at Each Time Point

"Response at at time point is defined as when the PPT average pain score was less than the Baseline PPT average score by any amount. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Sum of Pain Intensity Differences (SPID) for Pin Prick Test (PPT) (Post-hoc)

"SPID was calculated as a sum of the delta PPT scores at each time point until the designated time point. The delta PPT score is defined as the change in PPT score from baseline. PPT scores were assessed using a 0 (no pain) to 10 (severe pain) Numerical Rating Scale at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~The total possible scale range was from -100 (best) to +100 (worst) for SPID at the 30 minute time point, and from -160 (best) to +160 (worst) for SPID at the 60 minute time point Lower scores signify a better outcome (less sensitive to pain than at baseline = less pain with therapy = therapy was more effective).~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Stage II: Sum of Temperature Differences (STID) for Heat Sensation Threshold (QST Heat) (Post-hoc)

"STID was calculated as a sum of the delta QST Heat scores at each time point until the designated time point. The delta QST Heat score is defined as the change in QST Heat score from baseline. QST Heat scores were the temperature where the sensation of a heat stimuli was felt: ranging from 35 ºC to a maximum of 50.5 ºC with intervals of 0.5 ºC, at a frequency of every 1 minute for the first 5 minutes and then every 5 minutes thereafter until the final 60 minute time point.~The total possible scale range was from -155 ºC (best) to +155 ºC (worst) for STID at the 30 minute time point, and from -248 ºC (best) to +248 ºC (worst) for SPID at the 60 minute time point Lower scores signify a better outcome (less sensitive to pain than at baseline = less pain with therapy = therapy was more effective).~Stage II outcome." (NCT03233737)
Timeframe: Up to one hour post-application

Change in Pain Score

The primary outcome is the difference in pain score using a validated visual analog scale before the procedure, which is designated as the pre-procedure (or baseline) pain score to the maximum pain during procedure (designated as time 0) These two pain scores will be subtracted and the change in pain score will be reported. The validated visual analog scale allows patients to report pain on a scale of 0 to 100 mm long. At the beginning and at the end, there are two descriptors representing extremes of pain (i.e. no pain = 0 and extreme pain = 100). The patient rated her pain by making a vertical mark on the 100-mm line. The measurement in millimeters was converted to the same number of points ranging from 0 to 100 points. There are no subgroups. (NCT01925469)
Timeframe: Pre-procedure (Baseline) and procedure (Time 0)

Change in Pain Score From Pre-procedure to 5 Minutes Post Procedure.

The patients pain scores will also be assessed at 5 minutes post procedure and the change in pain scores from baseline to this time points will be analyzed. The pain scores will be subtracted to obtain the change in pain score (NCT01925469)
Timeframe: 5 minutes

Patient Satisfaction

The patient's satisfaction will be assessed using a validated satisfaction scale 30 minutes post procedure. (NCT01925469)
Timeframe: 30 minutes post procedure

Reviews

2 reviews available for benzocaine and Pain

Trials

27 trials available for benzocaine and Pain

Other Studies

22 other studies available for benzocaine and Pain