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The Biomedical Therapies Module 42

The Biomedical Therapies Module 42. The Biomedical Therapies These include physical, medicinal, and other forms of biological therapies. 1.Drug Therapies

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The Biomedical Therapies

Module 42

The Biomedical Therapies

These include physical, medicinal, and other forms of biological therapies.

1. Drug Therapies2. Brain Stimulation3. Psychosurgery

Drug Therapies

Psychopharmacology is the study of drug effects on mind and behavior.

Drug Therapies

However, many patients are left homeless on the streets due to their ill-

preparedness to cope independently outside in society.

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Double-Blind Procedures

To test the effectiveness of a drug, patients are tested with the drug and a placebo.

Two groups of patients and medical health professionals are unaware of who is taking

the drug and who is taking the placebo.

The good news is that it double-blind studies, several types of drugs have proven useful in treating psychological disorders.

Antipsychotic Drugs-drugs that calm patients with psychoses.

Classical antipsychotics [chlorpromazine (Thorazine)]: Remove a number of positive

symptoms associated with schizophrenia such as agitation, delusions, and hallucinations.

Side effects-sluggishness, tremors, twitches, tardive dyskinesia (involuntary movements)

Atypical antipsychotics [clozapine (Clozaril)]: Remove negative symptoms associated with schizophrenia such as

apathy, jumbled thoughts, concentration difficulties, and difficulties in interacting

with others.

Atypical Antipsychotic

Clozapine (Clozaril) blocks receptors for dopamine and serotonin to remove the negative symptoms of schizophrenia.

NEWER ANTIPSYCHOTIC DRUGS• Not really more effective in controlling the

schizophrenia symptoms but• Fewer conventional side effects.• However, may increase the risk of obesity and

diabetes.

• Despite the drawbacks, these new drugs along with life-skills programs and family support have enabled hundreds of thousands of people with schizophrenia to return to work and near-normal lives.

Antianxiety Drugs

Antianxiety drugs (Xanax and Ativan) depress the central nervous system and reduce anxiety and tension by elevating the levels of the Gamma-

aminobutyric acid (GABA) neurotransmitter. A new drug D-cycloserine acts upon a receptor that

facilitates the extinction of learned fears-enhances benefits of exposure therapy.

Antidepressant Drugs

Antidepressant drugs like Prozac, Zoloft, and Paxil are Selective Serotonin Reuptake Inhibitors (SSRIs) that improve the mood by elevating levels of serotonin by inhibiting reuptake.—being given

now to anxiety patients as well.

Mood-Stabilizing MedicationsLithium Carbonate, a common salt, has been used to stabilize manic episodes in bipolar disorders. It moderates the levels of

norepinephrine and glutamate neurotransmitters.

Depakote also seems to work (originally given to those with epilepsy)

Brain Stimulation

Electroconvulsive Therapy (ECT)

ECT is used for severely depressed patients who

do not respond to drugs. The patient is

anesthetized and given a muscle relaxant.

Patients usually get a 100 volt shock that

relieves them of depression.

HOW DOES ECT WORK?

•No one knows for sure.

•Possibly the shock-induced seizures calm neural centers where overactivity produces depression.

•It also appears to boost production of new brain cells

•Reduces suicidal thoughts.

Alternatives to ECT

Repetitive Transcranial Magnetic Stimulation

(rTMS)

In rTMS, a pulsating magnetic coil is placed

over prefrontal regions of the brain to treat

depression with minimal side effects.-wide awake

during procedure.No seizures or memory

loss

DEEP BRAIN STIMULATION

•Focusing on a cortex area that bridges the frontal lobes to the limbic system.

•Discovered this area that is overactive during depression becomes calm when given the drugs/ECT

•Implanted electrodes and a pacemaker stimulator-still debatable.

Psychosurgery-lobotomyPsychosurgery was

popular even in Neolithic times. Although used

sparingly today, about200 such operations do take place in the US alone. Don’t do

lobotomies anymore.

http://www.epub

.org.br

Psychosurgery

Psychosurgery is used as a last resort in alleviating psychological disturbances.

Psychosurgery is irreversible. Removal of brain tissue changes the mind.

Psychological Disorders are Biopsychosocial in Nature