Faradic Stimulation: Difference between revisions
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== Introduction == |
== Introduction == |
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Faradic current is a short duration interrupted direct current with a pulse duration ranging from 0.1 to 1 ms with frequency of 50 to 100 Hz. Faradic current are surged to produce tetanic contraction and relaxation of muscle. treatment with faradic current usually called faradism.Purva Nanivadekar and Shivali Kar, [http://www.ijesrt.com/issues%20pdf%20file/Archive-2017/January-2017/30.pdf “Microcontroller based Rehabilitation Stimulator”, International Journal of Computer Applications] 2013 |
Faradic current is a short duration interrupted direct current with a pulse duration ranging from 0.1 to 1 ms with frequency of 50 to 100 Hz. Faradic current are surged to produce tetanic contraction and relaxation of muscle. treatment with faradic current usually called faradism.Purva Nanivadekar and Shivali Kar, [http://www.ijesrt.com/issues%20pdf%20file/Archive-2017/January-2017/30.pdf “Microcontroller based Rehabilitation Stimulator”, International Journal of Computer Applications] 2013 |
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==Difference between farradic and galvanic current==
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==== '''''Faradic current'''''====
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'''''Faradic current''''' is |
is interrupted direct currenthas frequency 50:100Hzwith pulse durationfrom0.1-1MS.thiscurrentcan make contraction and relaxation ininnervated muscle这意味着肌肉nerve intactand not used for denervatedmusclewhichneedtoshortpulseduration.Whenapplying faradic stimulation,itstimulate sensorynerve and thepatient feel pricking sensation because short durationofpulse. thestimulated nerveisaccompainedby motor stimulationmake contractionof themuscle. |
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====='''Types of Faradic waveform'''=====
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Trapezoidal surging:inthistype ofwavetheimpulse increase graduallyanddecrease gradually used in mild to moderate injury. |
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Triangular surging: this type as trapezoidal surging.
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Saw tooth surging : in this type of wave the impulse increase gradually but sudden fall used in sever injury.Mangala B. Satardekar and Deepak V. Bhoir “ANALYSIS AND ENHANCEMENT IN THE PERFORMANCE OFELECTRICAL MUSCLE STIMULATOR.” INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6 (n.d.)
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==== '''Galvanic current'''==== |
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is interrupted directcurrenthas frequency 30 Hz with pulse duration 1Msandmore.This typeofcurrent used for muscle not havethenerve becauseofinjuryof thenerve.当美联社plying galvanic,thedenervatedmusclerespondtothis stimulus because long pulse duration.Thedenervatedmusclenot respondtofaradic because pulse duration is short.The patient with faradic feel of burning sensation
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===== '''Types of galvanic waveform''' =====
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Rectangular surging:the currentturn on and off intensity abruptly. |
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Trapezoidal surging: it slow riseandslow fall. |
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Triangular surging: it raise slowly,plateau’s and then falls slowly. |
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Mangala B.SatardekarandDeepak V.Bhoir “ANALYSIS AND ENHANCEMENT IN THE PERFORMANCE OFELECTRICAL MUSCLE STIMULATOR.” INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6 (n.d.)
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== Physiological Effect ==
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* The physiologicaleffect offarradic andgalvanicalmostlythesame except faradic for innervated muscle and galvanic for denervatedmuscle.
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* Both current increase blood flow tothearea treated that makethearea slight redness due to vasodilatation.Also both current make contractionthe musclesimilar to voluntary muscle contraction.To prevent fatigue the faradic allowthe肌肉relax after contraction. |
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* The faradic and galvanic current increase metabolism and remove waste product and bring more blood supply and nutrients to muscle thus increase demandofoxygen and nutrients tomuscle.
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* Electrical stimulation will re-educateof muscleaction. |
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* The electrical stimulationcanhelpinminimizetheextent ofmuscleatrophy
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== Indication == |
== Indication == |
Revision as of 21:06, 26 March 2020
Original Editor-Abdallah Ahmed Mohamed
Top Contributors-Abdallah Ahmed Mohamed,Kim JacksonandAminat AboladeIntroduction[edit|edit source]
Faradic current is a short duration interrupted direct current with a pulse duration ranging from 0.1 to 1 ms with frequency of 50 to 100 Hz. Faradic current are surged to produce tetanic contraction and relaxation of muscle. treatment with faradic current usually called faradism.[1]
Difference between farradic and galvanic current[edit|edit source]
Faradic current[edit|edit source]
is interrupted direct current has frequency 50:100Hz with pulse duration from 0.1-1MS. this current can make contraction and relaxation in innervated muscle that mean muscle has nerve intact and not used for denervated muscle which need to short pulse duration.When applying faradic stimulation,it stimulate sensory nerve and the patient feel pricking sensation because short duration of pulse. the stimulated nerve is accompained by motor stimulation make contraction of the muscle.
Types of Faradic waveform[edit|edit source]
Trapezoidal surging: in this type of wave the impulse increase gradually and decrease gradually used in mild to moderate injury.
Triangular surging: this type as trapezoidal surging.
Saw tooth surging : in this type of wave the impulse increase gradually but sudden fall used in sever injury.[2]
Galvanic current[edit|edit source]
is interrupted direct current has frequency 30 Hz with pulse duration 1Ms and more.This type of current used for muscle not have the nerve because of injury of the nerve.When applying galvanic,the denervated muscle respond to this stimulus because long pulse duration.The denervated muscle not respond to faradic because pulse duration is short.The patient with faradic feel of burning sensation
Types of galvanic waveform[edit|edit source]
Rectangular surging: the current turn on and off intensity abruptly.
Trapezoidal surging: it slow rise and slow fall.
Triangular surging: it raise slowly, plateau’s and then falls slowly.
Saw tooth surging: the gradual rise of current and abruptly falls.[2]
Physiological Effect[edit|edit source]
- The physiological effect of farradic and galvanic almostly the same except faradic for innervated muscle and galvanic for denervated muscle.
- Both current increase blood flow to the area treated that make the area slight redness due to vasodilatation. Also both current make contraction the muscle similar to voluntary muscle contraction. To prevent fatigue the faradic allow the muscle to relax after contraction.
- The faradic and galvanic current increase metabolism and remove waste product and bring more blood supply and nutrients to muscle thus increase demand of oxygen and nutrients to muscle.
- Electrical stimulation will re-educate of muscle action.
- The electrical stimulation can help in minimize the extent of muscle atrophy
Indication[edit|edit source]
- facilitation of muscle contraction when inhibited by Pain
- Muscle re-education:muscle contraction is needed to restore the sense of movement.In cases of flat foot or in muscle transplantation.the brain appreciate movement not muscle actions so crrent should be applied to restore normal movement.
- training of new muscle action
- Improved venous and lymphatic drainage as edema and gravitational ulcer by pumping action of muscle contraction and relaxation.
- Prevention and loosening of adhesion
- Painful knee syndrome.
Contraindication[edit|edit source]
- certain dermatological condition as psoriasis,tin ea and eczema.
- Infection
- Inflammation
- Thrombosis
- Loss of sensation
- Cancer
- Cardiac pacemakers
Practical Guidelines[edit|edit source]
- The patient is positioned so that the part to be treated is comfortably supported with the muscles to be stimulated in a shortened position although this may be modified with movement produced e.g,slight knee flexion allowing quadriceps stimulation to cause extension.
- The skin surface must be examined for any cuts or abrasions, treatment area should be washed to remove sebum and epithelial cells using hot water to lower resistance.
- Size of active electrode is chosen to considering size of treatment area.
- The electrode should be smaller than the pad to prevent the edge of the electrode being bent down on the skin.
- the pads should be soaked in warm tap water,saline or sodium bicarbonate solution before applied to the skin.
- Fixation is achieved with rubber strap or by body weight.
- explain to the patient sensation.
- when muscle is to be stimulated the active electrode is placed over motor point and small current is applied.The current may need to be increased and then decreased as the motor point found and good contraction obtain with less currnt.
- when muscle group is to be stimulated the active electrode placed at end of muscle group so current spread through the whole group.
References[edit|edit source]
- ↑Purva Nanivadekar and Shivali Kar,“Microcontroller based Rehabilitation Stimulator”, International Journal of Computer Applications2013
- ↑2.02.1Mangala Satardekar和迪帕克诉ANALYSI Bhoir”S AND ENHANCEMENT IN THE PERFORMANCE OFELECTRICAL MUSCLE STIMULATOR.” INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6 (n.d.)
- ↑Mangala Satardekar和迪帕克诉ANALYSI Bhoir”S AND ENHANCEMENT IN THE PERFORMANCE OFELECTRICAL MUSCLE STIMULATOR.” INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 6 (n.d.)
- ↑https://www.youtube.com/watch?v=PMBA2Pc-Dzc&feature=emb_logo
- ↑https://www.youtube.com/watch?v=bhu_WbjkTI0&feature=emb_logo