diadynamic. 4.pdf

Ac sin ist 315 symmetrical Dc gin co Age E Labelthew Symmetrical sinusoidal map m new (AC)current is symetrica D a wave Identifycurrent Symmetrical sinusoidal (DC)current w currentsin Ac unparances Pulsed Accurrent sin asymetria symetrica olyphase t Symmetrical sinusoidal pulsed,...

Ac sin ist 315 symmetrical Dc gin co Age E Labelthew Symmetrical sinusoidal map m new (AC)current is symetrica D a wave Identifycurrent Symmetrical sinusoidal (DC)current w currentsin Ac unparances Pulsed Accurrent sin asymetria symetrica olyphase t Symmetrical sinusoidal pulsed, polyphasic(AC) current Accurrent symmetrical rectangular Symmetrical rectangular (AC)current Pulsed DC symmetrical rectangular 5m DC rectangular, Symmetrical pagan pulsedsymmetrical (DC)current Diadynamic Current DR. AZZA ATTIA ASSOCIATE PROFESSOR OF PHYSICAL THERAPY REHABILITATION SCIENCES DEP. Symmetrical sinusoidal current(AC) wave symetriaulsinsousal Ac sin Diadynamic current  Diadynamic OSI currents is a low frequency current the name from the Greek, dia means through and Dynamis means force 19500 As the first described and used in clinical practice in 1950 by Pierre Bernard a e French dental surgeon so it may be called Bernard current. It BC Diadynamic current bi  Diadynamic currents are basically a variation of sinusoidal current. They are monophasic sinusoidal currents (rectified alternating current).  The carrier frequency is a sine wave, operating at 50Hz . IE.tt 50th EEF gotten y Diadynamic current has two basic form Half-Wave Rectification (Single Phase) Monophasé Fixe (MF) Full-Wave Rectification (Double IePhase ) Diphasé Fixe (DF) 2 IPI if fail Double Half MF Half-Wave Rectification Mf (Single Phase or Monophasé Fixe (MF) Yaniv  Eliminates the second half of each AC cycle sins f  Produce a monophasic pulsed current  Pulse duration equal to the inter-pulse interval  Frequency equal to that of the original (50Hz). FREEPD I IPI Full-Wave Rectification (Double Phase or Diphasé Fixe (DF) E Duplicate the second half of each AC cycle  Direct monophasic current  No inter-pulse interval  Frequency is twice to original (100 Hz.)  providing 100 pulses per second, each of which will be the same duration but with a zero inter-pulse interval.  2X F 10 10 10 G some D8 I PI 1001sec'D 25 Diadynamic Modes Fixed t monophase (MF) Fixed diaphase (DF) Short period (CP) Long Period (LP) Syncopal Rhythem (RS) scoffner SP SR 0 FM FD LP DP II ME Fixed Monophase (MF) Diadynamic 1. 2. 3. 4. 5. Half wave rectified alternating sinusoidal current Frequency = 50Hz Pulse time = inter-pulse interval = 10 ms , patient feel strong penetrating vibration. MF current can cause muscle stimulation at lower intensity than with DF. 6. Stimulate muscle and produce muscle contraction. special ____ 7. Used for treatment of pain without 0 muscle spasm. 1. Connective tissue trauma (Ligament sprains) Ex 2. Phantom pain sina.am if Connectivetissue ligamentsprain Pretreatment Fixed Diaphase (DF) Diadynamic 1. 2. 3. 4. 5. 6. 7. 8. Full wave rectified alternating sinusoidal current ___Is Frequency of 100 Hz Continuous series of 10ms impulse Pt 20 2 Patient feels itching and prickling sensation Muscle contraction occurs at high intensity sees.IE d Has a strong analgesic effect for short duration. Stimulate autonomic nervous system special __ Used to  Improved circulation (circulatory disorder).  Analgesia (100 Hz),  g Pain with muscle spasm  As a pretreatment for CP and LP 5 s 80Lgperiod a x2 Short Period (CP) Diadynamic      Diaphasporffy DF and MF, No intervening Alternating delivery of equal see pauses.(50% for each phase) Abrupt changes between the tensing MF current and relaxing DF current. In DF, there are fine tremors In MF, there are strong and constant vibration Increase blood supply in a traumatic area so reduce pain. Muscle & ligament traumas, acute injuries  Traumatic pain (acute lesion)  Traum Ms Acuting Strong constantvibration Dfrelaxint finetremors IOM SD Long Period (LP) Diadynamic Monophysicfixed    ps It consists of 10 seconds of MF followed by a 5 seconds of DF in which the peak gintensity is varied (surged) The gradual raising and lowering in amplitude is associated with e more pleasant sensation than produced by CP. EDIT The patient feels the strong vibrational during MF phase giving 0 away to the prickling of the DF phase which rises and falls slowly I unes patinarthro pininus If  Neuralgia, myalgia, arthralgia & chronic pain conditions.  LP has a long lasting analgesic effect sausage Ingperiod Syncopal Rhythem (RS) Diadynamic It is a delivery of fixed duration of MF, followed by equal rest duration (i.e. E 1 second phase of MF followed by 1 second rest phase). It can be used as Faradic stimulation of muscles Motor test of nerve excitability E Therapeutic Effects  Relief of pain  Decrease inflammation & edema.  Muscle re-education  Increase local circulation.  Facilitation of tissue healing. 34 in w d ME Therapeutic effects DIADYNAMIC CURRENT 1- Relief of pain due to Direct mechanism  Stimulation of sensory nerves leading to pain relief through stimulation of pain gate mechanism.  pain suppression by stimulating endorphins and encephalins release. Diadynamic currents are IT of basically a variation sinusoidal current. They are Iste monophasic sinusoidal currents Indirect mechanism  Improving circulation through pumping action of (rectified alternating current) 0 muscle contraction with subsequent removal of irritant with duration of 10 ms wastes. DIADYNAMIC CURRENT Diadynamic currents are 2- Increase local circulation due to a variation - basically Stimulate release of histamine of & histamine like substance that causes vasodilatation &Hyperemia. sinusoidal current. They are monophasic sinusoidal currents -Altered autonomic activity such as reduced  (rectified current) sympathetic tone alternating leading to vasodilatation with duration of 10 ms In stimulation  3- Decrease inflammation and swelling   Due to increased local circulation and change of cell membrane permeability. stimulates the muscle fibers, causing muscle contraction. increase blood flow to the muscle and reduce edema imagination DIADYNAMIC CURRENT 4- Muscle re-education due to stimulation of motor nerves but it is not Diadynamic currents are thebasically current of choice for muscle a variation of strengthening. sinusoidal current. They are 5-facilitation of tissue-healing monophasic sinusoidal currents Due to local circulatory changes and (rectified alternating current) secondary to reduce swelling and with duration of 10 ms inflammation Electrochemical effect of diadynamic Iim DIADYNAMICcurrent CURRENT Diadynamic current has relative high Diadynamic currents are DC amplitude, so that there is a basically a variation significant chance of skinof damage occurrence. current. They are sinusoidal  Skin damage is due to monophasic sinusoidal currents electrochemical changes and (rectified current) changes in alternating the pH value of the skin. duration ofskin 10 ms  with To keep the risk of damage to minimum, treatment time should be limited to ten minutes.  e u u Raynaud syndrome, also known as Raynaud's phenomenon, is a medical condition in which spasm of arteries cause episodes of reduced blood flow. Typically, the fingers, and less commonly the toes are involved triggered by cold temperatures, anxiety or stress Caused by magnesium deficiency or rheumatic disease and vitamin D deficiency IE Ff is Contraindications Contraindications  Over neoplastic lesion.  Over extreme edema.  Over hemorrhagic area.  Over osteomyleities get  Over anterior cervical.  Over transcranial area.  Over electronic implants.  Over superficial metal. Dangers and Precautions If as a cathode  Skin breakdown and burn  monophasic nature of diadynamic current may lead over time to skin damage and burn. In  This can be over come by short period of application or reversible of polarity. If Acid / alkaline reactions  Human tissues are composed of a mixture of approximately 70% e sodium chloride (Na+Cl−) and water (H2O).  The continuous DC flow through such tissues leads to electrolysis of this salted water medium at the electrode–skin interface.  Over time during therapy, this continuous DC flow will redistribute the sodium and chloride.  It Will get ACID accumulation under the POSITIVE (anode) electrode (weak HCl) • This is because the negatively charged chloride ions (Cl- from NaCl) is attracted towards the anode. • This is considered sclerotic, which tends to harden tissues through protein coagulation. a a HCl agtic node reaction Acid / alkaline reactions  Also it Will get ALKALINE accumulation under the NEGATIVE e (cathode) electrode because the positively charged sodium ions (Na+ from NaCl) will move towards the cathode.  • The Na+ ions react with water to form sodium hydroxide (NaOH). • considered sclerolytic in nature and, over time, tends to soften the skin (due to liquefying of proteins), thus exposing it to potential irritation and burn.  Such a sclerolytic is responsible for erythema of the skin and itching or burning sensation felt under this electrode during therapy. CHEMICAL BURN