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ELECTROCONVULSIVE THERAPY Jon Lehrmann MD Assistant Professor of Psychiatry Medical College of WI VAMC Milwaukee, WI.

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Presentation on theme: "ELECTROCONVULSIVE THERAPY Jon Lehrmann MD Assistant Professor of Psychiatry Medical College of WI VAMC Milwaukee, WI."— Presentation transcript:

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2 ELECTROCONVULSIVE THERAPY

3 Jon Lehrmann MD Assistant Professor of Psychiatry Medical College of WI VAMC Milwaukee, WI

4 Mental Health Care Pre-1930’s

5 History of ECT Von Meduna (1934)- Autopsies of patients w/ Seizure disorders and of patients w/ Schizophrenia. Difference in Glial cell proliferation

6 Chemically induced seizures- (camphor, pentylenetetrazol)

7 Insulin Shock Therapy In the 1930’s, Dr Sakel developed Insulin Shock Therapy

8 Cerletti and Bini (1934): Electricity Initially done without muscle blocker or anesthetic

9 Early ECT Assylums Few effective medications Many often severe side effects 1950’s- ether, and curare extract developed (Abram Bennett- a psychiatrist helped develop a method for extracting curare). In 1950’s antidepressant and antipsychotic meds introduced- significantly decreased utilization of ECT

10 Electrophysiological Principles Ohm’s Law: I=E/R (I=current, E=voltage, and R=resistance) Dose of electricity in ECT= milliCoulombs Brain has low impedance (resistance), skull has very high impedance. Only 20% of applied charge actually enters the brain. Seizure involves propagation of action potentials in a large percentage of neurons.

11 Mechanism of Action Neurotransmitter levels all increased in CSF after seizure. Results in down regulation of Beta adrenergic receptors. During seizure- PET studies show an increase in BBB permeability and in cerebral blood flow and metabolism. After seizure, blood flow and metabolism is decreased especially in the frontal lobes. Research shows this correlated w/ response.

12 Indications Major Depression w/ or w/o psychotic features Bipolar disorder - manic or depressed phase Acute or Catatonic Schizophrenia Some studies have shown efficacy in treating OCD, Delirium, NMS, Chronic pain syndromes, and intractable seizure disorders

13 Major Depression Efficacy vs antidepressants When is it a first line treatment consideration? Length of Antidepressant effect Maintenance ECT

14 Bipolar Mania Efficacy vs Lithium Indications for First Line Treatment: -Recent Myocardial Infarction w/ Acute Mania -Pregnancy w/ Acute mania

15 Pre ECT Workup Physical Exam Head CT CXR CBC, Basic Chem EKG ? Spinal Films

16 Contraindications? No Absolute Contraindications Relative Contraindications: Recent MI, Berry Aneurysm, Brain Mass, Increased Intracranial Pressure

17 Treatments Premedicate w/ Glycopyrrolate, consider short acting Beta blocker Patient not intubated Bite block Cuff leg to monitor sz EEG and EMG Length of sz- 20 sec to 1 min.

18 Number and Spacing of ECT 2-3x/wk- efficacy vs less memory impairment 5-12 sessions/ treatment (although up to 20 is possible) Point of maximum improvement- no more improvement after 2 further treatments.

19 Adverse Effects Mortality rate:.002% per treatment session,.01% per patient. Sore Muscles Head ache Short term confusion/ delirium Memory

20 Transcranial Magnetic Stimulation (TMS) Rt Frontal lobe- TMS pulses suppress activity and causes happiness and increased energy Left Frontal lobe- TMS pulses suppress activity and leads to sadness 4/250 had seizure 10Hz stimulation 20x/day, 11/17 patients w/ Major Depression showed significant improvement.

21 TMS continued So far positive effects have not lasted as long as positive effects from ECT Handful of case reports show efficacy w/ anxiety disorders.


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