The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform

S F Figoni - One of the best experts on this subject based on the ideXlab platform.

  • Electrical Stimulation-induced contraction to reduce blood stasis during arthroplasty
    IEEE Transactions on Rehabilitation Engineering, 1997
    Co-Authors: P. D. Faghri, H. F. Pompe Van Meerdervort, R. M. Glaser, S F Figoni
    Abstract:

    Deep venous thrombosis and subsequent pulmonary embolism due to venous pooling/stasis commonly occur in patients during hip and/or knee arthroplasty (i.e., replacement). This problem may be alleviated by using techniques to promote lower limb blood flow. Electrical Stimulation-induced contractions have been shown to activate the skeletal muscle pump, promote limb blood flow, and may be effective for reducing venous pooling/stasis and edema. Therefore, Electrical Stimulation may reduce the incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) during and following surgery. The overall goal of this project was to evaluate the clinical efficacy of sequential Electrical Stimulation-induced leg muscle contractions on the venous blood flow during surgery. The degree of venous pooling/stasis was monitored via Electrical impedance changes in the thorax. The changes in the patient's central hemodynamics were then calculated. Thirty patients were recruited and randomly assigned to either a control group (n = 15, mean age = 66.4 +/- 7.3) or experimental group (n = 15, age = 60.7 +/- 9.7). Both groups received the standard medical treatment for prevention of DVT (i.e., coumadin, heparin, etc.) and compression stockings (TED, Kendall). The control group used the sequential compression device (SCD + TED) and the experimental group used Electrical Stimulation (ES + TED). Electrical Stimulation was applied via surface electrodes to the lower-limb muscles (tibialis anterior and gastrocnemius) and upper limb muscles (quadriceps femoris and hamstrings). These muscles contracted sequentially, using an eight-channel Electrical stimulator. Four seconds of calf (contraction/compression) were followed by 7-s of calf and thigh (contraction/compression) interspersed by 60-s rest period during both Electrical Stimulation or sequential compression device. This cycle continued throughout the surgery (60-75 min) for both groups. At 15 min intervals, venous return was monitored by impedance cardiograph. Physiologic responses including ventricular stroke volume (SV), cardiac output (CO), heart rate (HR), total peripheral resistance (TPR), as well as mean arterial pressure (MAP) were monitored. These responses were statistically analyzed and compared throughout the surgery within each group and between the two groups. The results show stroke volume and cardiac output to be higher throughout surgery in the Electrical Stimulation group as compared with the sequential compression device group. The heart rate was consistently lower during Electrical Stimulation for both groups. Total peripheral resistance did not change in the Electrical Stimulation group; but increased in the sequential compression device group. The data suggest that continuous Electrical Stimulation-induced contractions could improve lower leg circulation by eliciting the physiologic muscle pump. This will lead to improved venous circulation and reduction of blood stasis during total hip and/or knee surgery. This technique may offer greater protection against DVT and PE during surgery than the commonly used sequential compression device.

  • Electrical Stimulation-induced contraction to reduce blood stasis during arthroplasty
    IEEE Transactions on Rehabilitation Engineering, 1997
    Co-Authors: P. D. Faghri, R. M. Glaser, H.f. Pompe Van Meerdervort, S F Figoni
    Abstract:

    Deep venous thrombosis and subsequent pulmonary embolism due to venous pooling/stasis commonly occur in patients during hip and/or knee arthroplasty (i.e., replacement). This problem may be alleviated by using techniques to promote lower limb blood flow. Electrical Stimulation-induced contractions have been shown to activate the skeletal muscle pump, promote limb blood flow, and may be effective for reducing venous pooling/stasis and edema. Therefore, Electrical Stimulation may reduce the incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) during and following surgery. The overall goal of this project was to evaluate the clinical efficacy of sequential Electrical Stimulation-induced leg muscle contractions on the venous blood flow during surgery. The degree of venous pooling/stasis was monitored via Electrical impedance changes in the thorax. The changes in the patient's central hemodynamics were then calculated. Thirty patients were recruited and randomly assigned to either a control group (n=15, mean age=66.4/spl plusmn/7.3) or experimental group (n=15, age 60.7/spl plusmn/9.7). Both groups received the standard medical treatment for prevention of DVT (i.e., coumadin, heparin, etc.) and compression stockings (TED, Kendall). The control group used the sequential compression device (SCD+TED) and the experimental group used Electrical Stimulation (ES+TED). Electrical Stimulation was applied via surface electrodes to the lower-limb muscles (tibialis anterior and gastrocnemius) and upper limb muscles (quadriceps femoris and hamstrings). These muscles contracted sequentially, using an 8-channel Electrical stimulator. Four seconds of calf (contraction/compression) were followed by 7-s of calf and thigh (contraction/compression) interspersed by 60-s rest period during both Electrical Stimulation or sequential compression device. This cycle continued throughout the surgery (60-75 min) for both groups. At 15 min intervals, venous return was monitored by impedance cardiograph. Physiologic responses including ventricular stroke volume (SV), cardiac output (CO), heart rate (HR), total peripheral resistance (TPR), as well as mean arterial pressure (MAP) were monitored. These responses were statistically analyzed and compared throughout the surgery within each group and between the 2 groups. The results show stroke volume and cardiac output to be higher throughout surgery in the Electrical Stimulation group as compared with the sequential compression device group. The heart rate was consistently lower during Electrical Stimulation for both groups. Total peripheral resistance did not change in the Electrical Stimulation group; but increased in the sequential compression device group.

P. D. Faghri - One of the best experts on this subject based on the ideXlab platform.

  • Electrical Stimulation-induced contraction to reduce blood stasis during arthroplasty
    IEEE Transactions on Rehabilitation Engineering, 1997
    Co-Authors: P. D. Faghri, H. F. Pompe Van Meerdervort, R. M. Glaser, S F Figoni
    Abstract:

    Deep venous thrombosis and subsequent pulmonary embolism due to venous pooling/stasis commonly occur in patients during hip and/or knee arthroplasty (i.e., replacement). This problem may be alleviated by using techniques to promote lower limb blood flow. Electrical Stimulation-induced contractions have been shown to activate the skeletal muscle pump, promote limb blood flow, and may be effective for reducing venous pooling/stasis and edema. Therefore, Electrical Stimulation may reduce the incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) during and following surgery. The overall goal of this project was to evaluate the clinical efficacy of sequential Electrical Stimulation-induced leg muscle contractions on the venous blood flow during surgery. The degree of venous pooling/stasis was monitored via Electrical impedance changes in the thorax. The changes in the patient's central hemodynamics were then calculated. Thirty patients were recruited and randomly assigned to either a control group (n = 15, mean age = 66.4 +/- 7.3) or experimental group (n = 15, age = 60.7 +/- 9.7). Both groups received the standard medical treatment for prevention of DVT (i.e., coumadin, heparin, etc.) and compression stockings (TED, Kendall). The control group used the sequential compression device (SCD + TED) and the experimental group used Electrical Stimulation (ES + TED). Electrical Stimulation was applied via surface electrodes to the lower-limb muscles (tibialis anterior and gastrocnemius) and upper limb muscles (quadriceps femoris and hamstrings). These muscles contracted sequentially, using an eight-channel Electrical stimulator. Four seconds of calf (contraction/compression) were followed by 7-s of calf and thigh (contraction/compression) interspersed by 60-s rest period during both Electrical Stimulation or sequential compression device. This cycle continued throughout the surgery (60-75 min) for both groups. At 15 min intervals, venous return was monitored by impedance cardiograph. Physiologic responses including ventricular stroke volume (SV), cardiac output (CO), heart rate (HR), total peripheral resistance (TPR), as well as mean arterial pressure (MAP) were monitored. These responses were statistically analyzed and compared throughout the surgery within each group and between the two groups. The results show stroke volume and cardiac output to be higher throughout surgery in the Electrical Stimulation group as compared with the sequential compression device group. The heart rate was consistently lower during Electrical Stimulation for both groups. Total peripheral resistance did not change in the Electrical Stimulation group; but increased in the sequential compression device group. The data suggest that continuous Electrical Stimulation-induced contractions could improve lower leg circulation by eliciting the physiologic muscle pump. This will lead to improved venous circulation and reduction of blood stasis during total hip and/or knee surgery. This technique may offer greater protection against DVT and PE during surgery than the commonly used sequential compression device.

  • Electrical Stimulation-induced contraction to reduce blood stasis during arthroplasty
    IEEE Transactions on Rehabilitation Engineering, 1997
    Co-Authors: P. D. Faghri, R. M. Glaser, H.f. Pompe Van Meerdervort, S F Figoni
    Abstract:

    Deep venous thrombosis and subsequent pulmonary embolism due to venous pooling/stasis commonly occur in patients during hip and/or knee arthroplasty (i.e., replacement). This problem may be alleviated by using techniques to promote lower limb blood flow. Electrical Stimulation-induced contractions have been shown to activate the skeletal muscle pump, promote limb blood flow, and may be effective for reducing venous pooling/stasis and edema. Therefore, Electrical Stimulation may reduce the incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) during and following surgery. The overall goal of this project was to evaluate the clinical efficacy of sequential Electrical Stimulation-induced leg muscle contractions on the venous blood flow during surgery. The degree of venous pooling/stasis was monitored via Electrical impedance changes in the thorax. The changes in the patient's central hemodynamics were then calculated. Thirty patients were recruited and randomly assigned to either a control group (n=15, mean age=66.4/spl plusmn/7.3) or experimental group (n=15, age 60.7/spl plusmn/9.7). Both groups received the standard medical treatment for prevention of DVT (i.e., coumadin, heparin, etc.) and compression stockings (TED, Kendall). The control group used the sequential compression device (SCD+TED) and the experimental group used Electrical Stimulation (ES+TED). Electrical Stimulation was applied via surface electrodes to the lower-limb muscles (tibialis anterior and gastrocnemius) and upper limb muscles (quadriceps femoris and hamstrings). These muscles contracted sequentially, using an 8-channel Electrical stimulator. Four seconds of calf (contraction/compression) were followed by 7-s of calf and thigh (contraction/compression) interspersed by 60-s rest period during both Electrical Stimulation or sequential compression device. This cycle continued throughout the surgery (60-75 min) for both groups. At 15 min intervals, venous return was monitored by impedance cardiograph. Physiologic responses including ventricular stroke volume (SV), cardiac output (CO), heart rate (HR), total peripheral resistance (TPR), as well as mean arterial pressure (MAP) were monitored. These responses were statistically analyzed and compared throughout the surgery within each group and between the 2 groups. The results show stroke volume and cardiac output to be higher throughout surgery in the Electrical Stimulation group as compared with the sequential compression device group. The heart rate was consistently lower during Electrical Stimulation for both groups. Total peripheral resistance did not change in the Electrical Stimulation group; but increased in the sequential compression device group.

Lawrence A. Lavery - One of the best experts on this subject based on the ideXlab platform.

  • Electrical Stimulation to accelerate wound healing.
    Diabetic Foot & Ankle, 2013
    Co-Authors: Gaurav Thakral, Javier Lafontaine, Talal K. Talal, Bijan Najafi, Lawrence A. Lavery
    Abstract:

    Background : There are several applications of Electrical Stimulation described in medical literature to accelerate wound healing and improve cutaneous perfusion. This is a simple technique that could be incorporated as an adjunctive therapy in plastic surgery. The objective of this review was to evaluate the results of randomized clinical trials that use Electrical Stimulation for wound healing. Method : We identified 21 randomized clinical trials that used Electrical Stimulation for wound healing. We did not include five studies with treatment groups with less than eight subjects. Results : Electrical Stimulation was associated with faster wound area reduction or a higher proportion of wounds that healed in 14 out of 16 wound randomized clinical trials. The type of Electrical Stimulation, waveform, and duration of therapy vary in the literature. Conclusion : Electrical Stimulation has been shown to accelerate wound healing and increase cutaneous perfusion in human studies. Electrical Stimulation is an adjunctive therapy that is underutilized in plastic surgery and could improve flap and graft survival, accelerate postoperative recovery, and decrease necrosis following foot reconstruction. Keywords : diabetic foot ulcer; electric Stimulation therapy; treatment outcome; perfusion; infection (Published: 16 September 2013) Citation: Diabetic Foot & Ankle 2013, 4 : 22081 - http://dx.doi.org/10.3402/dfa.v4i0.22081

  • Electrical Stimulation to accelerate wound healing
    Diabetic Foot and Ankle, 2013
    Co-Authors: Gaurav Thakral, Javier Lafontaine, Talal K. Talal, Bijan Najafi, Paul Kim, Lawrence A. Lavery
    Abstract:

    Background: There are several applications of Electrical Stimulation described in medical literature to accelerate wound healing and improve cutaneous perfusion. This is a simple technique that could be incorporated as an adjunctive therapy in plastic surgery. The objective of this review was to evaluate the results of randomized clinical trials that use Electrical Stimulation for wound healing. Method:We identified 21 randomized clinical trials that used Electrical Stimulation for wound healing.We did not include five studies with treatment groups with less than eight subjects. Results: Electrical Stimulation was associated with faster wound area reduction or a higher proportion of wounds that healed in 14 out of 16 wound randomized clinical trials. The type of Electrical Stimulation, waveform, and duration of therapy vary in the literature. Conclusion: Electrical Stimulation has been shown to accelerate wound healing and increase cutaneous perfusion in human studies. Electrical Stimulation is an adjunctive therapy that is underutilized in plastic surgery and could improve flap and graft survival, accelerate postoperative recovery, and decrease necrosis following foot reconstruction.

R. M. Glaser - One of the best experts on this subject based on the ideXlab platform.

  • Electrical Stimulation-induced contraction to reduce blood stasis during arthroplasty
    IEEE Transactions on Rehabilitation Engineering, 1997
    Co-Authors: P. D. Faghri, H. F. Pompe Van Meerdervort, R. M. Glaser, S F Figoni
    Abstract:

    Deep venous thrombosis and subsequent pulmonary embolism due to venous pooling/stasis commonly occur in patients during hip and/or knee arthroplasty (i.e., replacement). This problem may be alleviated by using techniques to promote lower limb blood flow. Electrical Stimulation-induced contractions have been shown to activate the skeletal muscle pump, promote limb blood flow, and may be effective for reducing venous pooling/stasis and edema. Therefore, Electrical Stimulation may reduce the incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) during and following surgery. The overall goal of this project was to evaluate the clinical efficacy of sequential Electrical Stimulation-induced leg muscle contractions on the venous blood flow during surgery. The degree of venous pooling/stasis was monitored via Electrical impedance changes in the thorax. The changes in the patient's central hemodynamics were then calculated. Thirty patients were recruited and randomly assigned to either a control group (n = 15, mean age = 66.4 +/- 7.3) or experimental group (n = 15, age = 60.7 +/- 9.7). Both groups received the standard medical treatment for prevention of DVT (i.e., coumadin, heparin, etc.) and compression stockings (TED, Kendall). The control group used the sequential compression device (SCD + TED) and the experimental group used Electrical Stimulation (ES + TED). Electrical Stimulation was applied via surface electrodes to the lower-limb muscles (tibialis anterior and gastrocnemius) and upper limb muscles (quadriceps femoris and hamstrings). These muscles contracted sequentially, using an eight-channel Electrical stimulator. Four seconds of calf (contraction/compression) were followed by 7-s of calf and thigh (contraction/compression) interspersed by 60-s rest period during both Electrical Stimulation or sequential compression device. This cycle continued throughout the surgery (60-75 min) for both groups. At 15 min intervals, venous return was monitored by impedance cardiograph. Physiologic responses including ventricular stroke volume (SV), cardiac output (CO), heart rate (HR), total peripheral resistance (TPR), as well as mean arterial pressure (MAP) were monitored. These responses were statistically analyzed and compared throughout the surgery within each group and between the two groups. The results show stroke volume and cardiac output to be higher throughout surgery in the Electrical Stimulation group as compared with the sequential compression device group. The heart rate was consistently lower during Electrical Stimulation for both groups. Total peripheral resistance did not change in the Electrical Stimulation group; but increased in the sequential compression device group. The data suggest that continuous Electrical Stimulation-induced contractions could improve lower leg circulation by eliciting the physiologic muscle pump. This will lead to improved venous circulation and reduction of blood stasis during total hip and/or knee surgery. This technique may offer greater protection against DVT and PE during surgery than the commonly used sequential compression device.

  • Electrical Stimulation-induced contraction to reduce blood stasis during arthroplasty
    IEEE Transactions on Rehabilitation Engineering, 1997
    Co-Authors: P. D. Faghri, R. M. Glaser, H.f. Pompe Van Meerdervort, S F Figoni
    Abstract:

    Deep venous thrombosis and subsequent pulmonary embolism due to venous pooling/stasis commonly occur in patients during hip and/or knee arthroplasty (i.e., replacement). This problem may be alleviated by using techniques to promote lower limb blood flow. Electrical Stimulation-induced contractions have been shown to activate the skeletal muscle pump, promote limb blood flow, and may be effective for reducing venous pooling/stasis and edema. Therefore, Electrical Stimulation may reduce the incidence of deep venous thrombosis (DVT) and pulmonary embolism (PE) during and following surgery. The overall goal of this project was to evaluate the clinical efficacy of sequential Electrical Stimulation-induced leg muscle contractions on the venous blood flow during surgery. The degree of venous pooling/stasis was monitored via Electrical impedance changes in the thorax. The changes in the patient's central hemodynamics were then calculated. Thirty patients were recruited and randomly assigned to either a control group (n=15, mean age=66.4/spl plusmn/7.3) or experimental group (n=15, age 60.7/spl plusmn/9.7). Both groups received the standard medical treatment for prevention of DVT (i.e., coumadin, heparin, etc.) and compression stockings (TED, Kendall). The control group used the sequential compression device (SCD+TED) and the experimental group used Electrical Stimulation (ES+TED). Electrical Stimulation was applied via surface electrodes to the lower-limb muscles (tibialis anterior and gastrocnemius) and upper limb muscles (quadriceps femoris and hamstrings). These muscles contracted sequentially, using an 8-channel Electrical stimulator. Four seconds of calf (contraction/compression) were followed by 7-s of calf and thigh (contraction/compression) interspersed by 60-s rest period during both Electrical Stimulation or sequential compression device. This cycle continued throughout the surgery (60-75 min) for both groups. At 15 min intervals, venous return was monitored by impedance cardiograph. Physiologic responses including ventricular stroke volume (SV), cardiac output (CO), heart rate (HR), total peripheral resistance (TPR), as well as mean arterial pressure (MAP) were monitored. These responses were statistically analyzed and compared throughout the surgery within each group and between the 2 groups. The results show stroke volume and cardiac output to be higher throughout surgery in the Electrical Stimulation group as compared with the sequential compression device group. The heart rate was consistently lower during Electrical Stimulation for both groups. Total peripheral resistance did not change in the Electrical Stimulation group; but increased in the sequential compression device group.

Lisa Griffin - One of the best experts on this subject based on the ideXlab platform.

  • neuromuscular Electrical Stimulation for skeletal muscle function
    Yale Journal of Biology and Medicine, 2012
    Co-Authors: Barbara M Doucet, Lisa Griffin
    Abstract:

    Lack of neural innervation due to neurological damage renders muscle unable to produce force. Use of Electrical Stimulation is a medium in which investigators have tried to find a way to restore movement and the ability to perform activities of daily living. Different methods of applying Electrical current to modify neuromuscular activity are Electrical Stimulation (ES), neuromuscular Electrical Stimulation (NMES), transcutaneous Electrical nerve Stimulation (TENS), and functional Electrical Stimulation (FES). This review covers the aspects of Electrical Stimulation used for rehabilitation and functional purposes. Discussed are the various parameters of Electrical Stimulation, including frequency, pulse width/duration, duty cycle, intensity/amplitude, ramp time, pulse pattern, program duration, program frequency, and muscle group activated, and how they affect fatigue in the stimulated muscle.