The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform

Wenfang Huang - One of the best experts on this subject based on the ideXlab platform.

Bruno Bissonnette - One of the best experts on this subject based on the ideXlab platform.

  • pupillary reflex dilation and skin temperature to assess sensory level during combined general and Caudal Anesthesia in children
    Pediatric Anesthesia, 2004
    Co-Authors: John F. Emery, Leslie Mackeen, Elise Héon, Bruno Bissonnette
    Abstract:

    Summary Background:  Regional Anesthesia causes sympathetic blockade, vasodilation and higher skin temperature in anesthetized dermatomes. Measurement of skin temperature changes might provide a useful estimate of the level of Caudal Anesthesia in children. Pupillary reflex dilation (PRD) allows estimation of the sensory level during combined general/epidural Anesthesia in adults, but has not been assessed in children. This study was designed to evaluate skin temperature and PRD as methods of estimating sensory level in children receiving combined general/Caudal epidural Anesthesia. Methods:  Twenty ASA I and II children aged 10 months–5 years were enrolled. Anesthesia was induced with sevoflurane and N2O in O2 and maintained with 1 MAC isoflurane and air in O2. Caudal epidural Anesthesia was achieved by injection of 1 ml·kg−1 0.25% bupivacaine. Skin temperature was measured by rapid response infrared thermometry. PRD was measured using an ophthalmic ultrasound biomicroscope (UBM). The three criteria used to estimate sensory level were a drop in skin temperature of 0.5°C between dermatomes, PRD of 50% and PRD of 0.2 mm. Results:  A drop in skin temperature of 0.5°C between dermatomes allowed estimation of the sensory level in only 20% of patients. PRD of 50%, and PRD of 0.2 mm allowed estimation of the sensory level in 45 and 100% of patients, respectively. PRD was significantly greater above the T10 dermatome compared with L2 (P < 0.01). The maximum pupillary dilation was significantly greater in children over 2 years of age [1.3 ± 0.8 mm sd)] compared with children less than two years of age [0.6 ± 0.3 mm sd)]. Conclusions:  Skin temperature cannot be used to estimate sensory level during combined general/Caudal epidural Anesthesia. PRD of 0.2 mm is sensitive to the loss of analgesia but is not clinically useful. PRD may be useful above 2 years of age.

  • Pupillary reflex dilation and skin temperature to assess sensory level during combined general and Caudal Anesthesia in children.
    Paediatric anaesthesia, 2004
    Co-Authors: John F. Emery, Leslie Mackeen, Elise Héon, Bruno Bissonnette
    Abstract:

    Summary Background:  Regional Anesthesia causes sympathetic blockade, vasodilation and higher skin temperature in anesthetized dermatomes. Measurement of skin temperature changes might provide a useful estimate of the level of Caudal Anesthesia in children. Pupillary reflex dilation (PRD) allows estimation of the sensory level during combined general/epidural Anesthesia in adults, but has not been assessed in children. This study was designed to evaluate skin temperature and PRD as methods of estimating sensory level in children receiving combined general/Caudal epidural Anesthesia. Methods:  Twenty ASA I and II children aged 10 months–5 years were enrolled. Anesthesia was induced with sevoflurane and N2O in O2 and maintained with 1 MAC isoflurane and air in O2. Caudal epidural Anesthesia was achieved by injection of 1 ml·kg−1 0.25% bupivacaine. Skin temperature was measured by rapid response infrared thermometry. PRD was measured using an ophthalmic ultrasound biomicroscope (UBM). The three criteria used to estimate sensory level were a drop in skin temperature of 0.5°C between dermatomes, PRD of 50% and PRD of 0.2 mm. Results:  A drop in skin temperature of 0.5°C between dermatomes allowed estimation of the sensory level in only 20% of patients. PRD of 50%, and PRD of 0.2 mm allowed estimation of the sensory level in 45 and 100% of patients, respectively. PRD was significantly greater above the T10 dermatome compared with L2 (P 

Hengfei Luan - One of the best experts on this subject based on the ideXlab platform.

  • effect of dexmedetomidine added to ropivicaine for Caudal Anesthesia in patients undergoing hemorrhoidectomy a prospective randomized controlled trial
    Medicine, 2018
    Co-Authors: Ming-yu Xiu, Xiaobao Zhang, Pin Zhu, Liang Tian, Jiying Feng, Zhibin Zhao, Hengfei Luan
    Abstract:

    BACKGROUND To assess the effect of dexmedetomidine added to ropivaccaine on the onset and duration of sensory block, as well as postoperative analgesia during Caudal Anesthesia in patients undergoing hemorrhoidectomy. METHODS Fifty adult patients scheduled for hemorrhoidectomy were divided into 2 groups. The group R received Caudal Anesthesia using 18 mL 0.3% ropivacaine plus 2 mL normal saline. The group RD received 18 mL 0.3% ropivacaine plus 2 mL 1 μg/kg dexmedetomidine. Heart rate, mean blood pressure, onset time and duration of sensory block, and duration of analgesia were observed. RESULTS The onset time of sensory block was shortened (9.2 ± 1.3 vs 7.2 ± 1.2), and the duration of sensory block (3.0 ± 0.7 vs 3.8 ± 0.8) and duration of analgesia (3.9 ± 0.7 vs 5.3 ± 0.8) were prolonged in group RD compared with group R (P < .05). The heart rate and the mean blood pressure were also lower in the group RD compared with group R at each observation time points, except the baseline (P < .05). No bradycardia or hypotension was reported. CONCLUSION Dexmedetomidine as an adjuvant to ropivacaine prolonged the duration of Caudal block and improved postoperative analgesia without significant side effects in adult patients undergoing hemorrhoidectomy.

  • Effect of dexmedetomidine added to ropivicaine for Caudal Anesthesia in patients undergoing hemorrhoidectomy: A prospective randomized controlled trial.
    Medicine, 2018
    Co-Authors: Ming-yu Xiu, Xiaobao Zhang, Pin Zhu, Liang Tian, Jiying Feng, Zhibin Zhao, Hengfei Luan
    Abstract:

    BACKGROUND To assess the effect of dexmedetomidine added to ropivaccaine on the onset and duration of sensory block, as well as postoperative analgesia during Caudal Anesthesia in patients undergoing hemorrhoidectomy. METHODS Fifty adult patients scheduled for hemorrhoidectomy were divided into 2 groups. The group R received Caudal Anesthesia using 18 mL 0.3% ropivacaine plus 2 mL normal saline. The group RD received 18 mL 0.3% ropivacaine plus 2 mL 1 μg/kg dexmedetomidine. Heart rate, mean blood pressure, onset time and duration of sensory block, and duration of analgesia were observed. RESULTS The onset time of sensory block was shortened (9.2 ± 1.3 vs 7.2 ± 1.2), and the duration of sensory block (3.0 ± 0.7 vs 3.8 ± 0.8) and duration of analgesia (3.9 ± 0.7 vs 5.3 ± 0.8) were prolonged in group RD compared with group R (P 

Hongfei Lin - One of the best experts on this subject based on the ideXlab platform.

John F. Emery - One of the best experts on this subject based on the ideXlab platform.

  • pupillary reflex dilation and skin temperature to assess sensory level during combined general and Caudal Anesthesia in children
    Pediatric Anesthesia, 2004
    Co-Authors: John F. Emery, Leslie Mackeen, Elise Héon, Bruno Bissonnette
    Abstract:

    Summary Background:  Regional Anesthesia causes sympathetic blockade, vasodilation and higher skin temperature in anesthetized dermatomes. Measurement of skin temperature changes might provide a useful estimate of the level of Caudal Anesthesia in children. Pupillary reflex dilation (PRD) allows estimation of the sensory level during combined general/epidural Anesthesia in adults, but has not been assessed in children. This study was designed to evaluate skin temperature and PRD as methods of estimating sensory level in children receiving combined general/Caudal epidural Anesthesia. Methods:  Twenty ASA I and II children aged 10 months–5 years were enrolled. Anesthesia was induced with sevoflurane and N2O in O2 and maintained with 1 MAC isoflurane and air in O2. Caudal epidural Anesthesia was achieved by injection of 1 ml·kg−1 0.25% bupivacaine. Skin temperature was measured by rapid response infrared thermometry. PRD was measured using an ophthalmic ultrasound biomicroscope (UBM). The three criteria used to estimate sensory level were a drop in skin temperature of 0.5°C between dermatomes, PRD of 50% and PRD of 0.2 mm. Results:  A drop in skin temperature of 0.5°C between dermatomes allowed estimation of the sensory level in only 20% of patients. PRD of 50%, and PRD of 0.2 mm allowed estimation of the sensory level in 45 and 100% of patients, respectively. PRD was significantly greater above the T10 dermatome compared with L2 (P < 0.01). The maximum pupillary dilation was significantly greater in children over 2 years of age [1.3 ± 0.8 mm sd)] compared with children less than two years of age [0.6 ± 0.3 mm sd)]. Conclusions:  Skin temperature cannot be used to estimate sensory level during combined general/Caudal epidural Anesthesia. PRD of 0.2 mm is sensitive to the loss of analgesia but is not clinically useful. PRD may be useful above 2 years of age.

  • Pupillary reflex dilation and skin temperature to assess sensory level during combined general and Caudal Anesthesia in children.
    Paediatric anaesthesia, 2004
    Co-Authors: John F. Emery, Leslie Mackeen, Elise Héon, Bruno Bissonnette
    Abstract:

    Summary Background:  Regional Anesthesia causes sympathetic blockade, vasodilation and higher skin temperature in anesthetized dermatomes. Measurement of skin temperature changes might provide a useful estimate of the level of Caudal Anesthesia in children. Pupillary reflex dilation (PRD) allows estimation of the sensory level during combined general/epidural Anesthesia in adults, but has not been assessed in children. This study was designed to evaluate skin temperature and PRD as methods of estimating sensory level in children receiving combined general/Caudal epidural Anesthesia. Methods:  Twenty ASA I and II children aged 10 months–5 years were enrolled. Anesthesia was induced with sevoflurane and N2O in O2 and maintained with 1 MAC isoflurane and air in O2. Caudal epidural Anesthesia was achieved by injection of 1 ml·kg−1 0.25% bupivacaine. Skin temperature was measured by rapid response infrared thermometry. PRD was measured using an ophthalmic ultrasound biomicroscope (UBM). The three criteria used to estimate sensory level were a drop in skin temperature of 0.5°C between dermatomes, PRD of 50% and PRD of 0.2 mm. Results:  A drop in skin temperature of 0.5°C between dermatomes allowed estimation of the sensory level in only 20% of patients. PRD of 50%, and PRD of 0.2 mm allowed estimation of the sensory level in 45 and 100% of patients, respectively. PRD was significantly greater above the T10 dermatome compared with L2 (P