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Abstract -128- SUMMARY This work was carried out in search for a clear understanding of the current views about electrooonvulsive therapy. ECT. The starting point was the study of the development of ECT. This shows that electricity as a healing procedure is not new but was known to Hippocrate. Long before electroshock was first used, methods for inducing epileptic fits in schizoprenics were employed in the hope of a therapeuticalJ..yuseful reaction. This was based on the observation, which proved to be false, that epilepsy and schizophrenia could not coexist in the same body, and that schizophrenic symptoms may disappear, at least temporerly, after medically induced therapeutic convulsions. Dr. Oliver (1958) gave camphor by mouth to induce convulsion in melanocholic patients. Manfred Satle (1933) gave insulin to induce deep hypoglycamic states for treatment of schizophrenics. Nyiro (1937) attempts treatment with transfusion of blood from epileptics. Meduna (1938) used cardiazol for inducation of the convulsion. Cerletti then used electricity to induce convulsion instead of chemical induction and his colleague Bini devised the first electroshock box and they induce the first electro convulsion in man in 1938. - 129- In 1958 Esquibil, et al., used indoklon for convulsive therapy, but it has not replaced ECT due to its being more expensive, no longer obtainable, cause more memory disturbance to the patient, and less convinent than ECT. Attention was paid to what constituted the optimal strength and type of current, preparation and premedications of the patient to lessen side effects and complications, the most suitable part of the head to which to apply the electrodes, and the psychiatric conditions for which it seemed more appropriate. So many modifications of the treatment were reconmended. The preparation of the patient for ECT should include careful medical and neurological preparation by complete physical examination and doing the investigations needed. To safe guard the patient before the treatment advise him to take aothing by mouth after the preceding midnight and also advise him of taking certain drugs. Prepare the treatment area by equipment needed (as CO2 in oxYgen, air way, resuscitator, tracheostomy tray, i.v. fluids, mouth gag and head piece) then apply the procedure. Premedicate the patient by giving atropine, general anaesthesia and muscle relaxant. This premedication make ECT more acceptable and take much of the unpleasantness out of the treatment, as well as giving the patient maximal protection. There are cogent medical reasons as well -130- as overriding legal ones for never giving ECT without anaesthetic and muscle relaxant except in special circumstances. However unmodified ECT is still given in some countries which cannot afford the expense, response, and lacks manpower which an anaesthetic requires. As regards electrode placement ECT was given bilaterally either anterior to the pinna or to both temples. Lancaster and others (1958) used unilateral ECT using the non dominant hemisphere. Many varieties of electrode placement has been used by different workers. The temporo- parietal position is probably the most widely used. The mastoid-frontal position and anterior bifrontal positions are also used. The efficacy of U/ECT is as good by the end of treatment as BjECT, but B/ECT oftrn gives a quicker result. Memory disturbance, disoriantation, post-ictal confusion and other side effects are significantly less when U/ECT is given. Most psychiatricts have no information in either the quantity of elect.ricity or the wavefo:rtn,so the electrical aspect of the stimulus have been cleared up. Many other factors also influence the production of convulsion include quantity of electricity, current intensity, waveform pulse rate and skull bone resistance. -131- Later on brief stimulus ”pulse” and unidirectional waveform have been used to reduce the amount of electrical energy and side effects. The number of ECT needed to relieve symptoms varies from patient to another, from one disease to another, and also from one technique to another. The frequency usually varies between 2-) times a week, with an interval of not less than 48 hours between successive treatments. How ECT actually works remains unclear and there is no convincing answer at present time. Hypotheses are begining to explore that,the principal theories are: Psychological theory and amnesia theory, but they proved to be uncorrect. Neurophysiological theory and biochemical theory, but the facts are not well established. A computer analogy theory suggesting that ECT works by rectifying abnormal neuronal circuits. Brain synchronizing theory, that suggests that brain organisation and function cculd be approached as partly analogous to the physicelly pulsating heart where a pace-maker is the leading level of organisation at a given moment. There is not known single dominant level but alternate interchanging levels of dominance. ECT removes all waves leading to the return of some waves while others do not. ECT also strengthens the strongest wave and weakens the weakest. -132- from the last hypothesis ECT may prove to be misnomer, it is better to consider human as a growing organism with periodical crises of rebirth sllowing healthy or pathological unfolding, and it is likely to consider ECT as a therapeutic microgeny repeating the ontogenetic phases of development. This rebirth building up organisation may not last more than a fraction of a second up to few seconds. The response to ECT is related to many factors rather than the simple application of the shock, e.g. the milieu where it is given, the therapist giving it, the immediate management, and the internal dicision of the patient before he is submitted to it. A variety of psychiatric symptoms have been raported to respond to ECT. Specific indications for its use include severe affective disorders and catatonic schizophrenic states. There are some depressive symptoms that predict a good responce to ECT. Endogenous depression or that with more endogenous symptoms respond more than neurotic ones. Involutional melanocholia react best to ECT. Post partum depression, reactive depression and depression associated with some forms of organic brain disease may also get benifit from ECT. For manic state ECT is useful for controlling hyperexcited and agitated behaviour. For schizophrenia ECT is more controversial than its use in affective illness. The different types of schizophrenia respond with a different varieties. ECT may be also helpful in neurosis, -133- depersonalisation, hypochondriasis, certain organic psychoses particularly loaded with affective component. Howeyer, certain authors claim that some neurological disease as parkinson’s disease, epilepsy and pseudodementia may get some benifit. Lastly the favourable response to EeT may reinforce the diagnosis of endogenous depression if not settled before the treatment. As such it could be considered as a diagnostic tool. In comparison of ECT with antidepressant drugs in depression, it was proved thst ECT had a significantly greater percentage of marked improvement or complete response. Delutional depressed patients respond much more frequently to ECT. Suicide attempts in depressed patients is less frequent in the ECT treated patients than in the antidepressant treated patient. ECT has side effects as any serious physical treatment in medicine. Side effects and complications may be immediate or delayed, immediate side effects include frectures, fatalities, r~pture spleen, headach, agitation, nausea, vertigo, (lJmage of teeth for tongue, or confusion. Delayed side effects may be psycnological, neurological or physical changes. Psychological as memory disturbance, transformation of depression into mania or hypomania, transformation of schizo-affective disorders or catatonic stupor into mania or hypomania. Neurological -134- side effects include EEG ohanges, epilepsy, pathologioal brain damage, development of tardive dyskinesia, development of post ECT astrixis, temporary breakdown of B.B.B. and muscle stiffness. Physical changes include neurological, neuropathol~ ogioal, cardiovascular, respiratory, endocrine, blood, autonomic nervous system and sleep changes. ECT is contraindicated in some cases. Absolute contraindication include brain tumours, any space ooouping lesion or pre-existing inorease I.C.P. Relative oontraindioation include psychiotrio and medioal conditions. Psychiatric oontraindioation inoludes depressive hysterics, oboessive oompulsive sy~ptoms, hysterical symptoms, anxiety reaotion, border line personality disorders, organio brain disease and sexual deviation. Medioal oonditions inolude any medioal illness that inoreases the risk of anaes.thetic prooedure, disease likely to be made worse by the changes in blood pressure and oardiac rhythm, a history of post oerebrovasoular aooident, severe hypertension, bone disease, poorly controlled diabetio patients. ECT oan be used in special oases but with Bome oautious, as patients with oardiao paoemaker, patients reoeiving B-adrenergio blook:ade, hypertensive patients, epileptio -135- patients, high risk pregnanoy and in depressed patient after oraniotomy. Finally medioologal aspeot must be taken in oonsideration before giving ECT. Cooperation among psychiatrists, lawyers and civil libertarians can help to establish a better set of ethical guidelines for the treatment as well as protection of both the patients’ health and civil r.ights. |