Thiopentone (Na)

Thiopentone (Na) is a very short-acting barbiturate, used intravenously as a depressant for central nervous system, induces hypnosis and anesthesia but not analgesia. Thiopentone (Na) is used for short duration anesthesia or for induction of anesthesia prior to use of other anesthetics.


Adult Dose
Dose: 250 to 5000 mg
Single Dose: 2600 (2625)
Frequency: As recommended.
Route: IV
Instructions: As Required
Neonatal
Dose: 2 to 7 mg/kg
Single Dose: 4.5 (4.5)
Frequency: As recommended.
Route: Intra Venous
Instructions: Single Dose
Paedriatic
Dose: 2 to 7 mg/kg
Single Dose: 4.5 (4.5)
Frequency: As recommended.
Route: Intra Venous
Instructions: Single Dose
Characteristics
belongs to Thiobarbiturate. It belongs to Chloride Channel opener (Gaba operated) pharmacological group on the basis of mechanism of action and also classified in General Anesthetics pharmacological group.The Molecular Weight of Thiopentone (Na) is 264.30. It is weakly alkaline drug, 3.50% solution of the drug is isotonic and Its pKa is 7.6.
Contraindications
Thiopentone (Na) is contraindicated in conditions like Porphyria.
Effects
Thiopentone (Na) produces potentially life-threatening effects which include Apnea, Respiratory depression, Hypotension, CNS depression, Myocardial depression. which are responsible for the discontinuation of Thiopentone (Na) therapy.The symptomatic adverse reactions produced by Thiopentone (Na) are more or less tolerable and if they become severe, they can be treated symptomatically, these include Cough, Bronchospasm, Laryngospasm, Hiccough.
Indications
Thiopentone (Na) is primarily indicated in conditions like Convulsions, Induction of anaesthesia, Induction of general anaesthesia, Reduction of raised intracranial pressure, and can also be given in adjunctive therapy as an alternative drug of choice in Cerebral ischaemia.
Interactions
Thiopentone (Na) is known to interact with other drugs, the details of drug interactions is as follows:DrugDetailsSeverityOnsetManagementAlcoholAspirinCyclizineHydromorphoneMethylphenidate (HCl)Nitrous OxidePethidine (HCl)Phenytoin (Na)ProbenecidPromethazine (HCl)Promethazine (HCl)Sufentanil (Citrate)SulfadoxineSulfisoxazoleVecuronium (Br)Warfarin (Na) These interactions are sometimes beneficial and sometimes may pose threats to life. Always consult your physician for the change of dose regimen or an alternative drug of choice that may strictly be required.
Interfrence
Risks
Drug should not be given to Geriatrics.If prescribing authority justifies the benefits of the drug against the possible damages he/she should reevaluate them and consult the reference material and previous studies.
Storage
Inj Store in refrigerator. Protect from Sunlight. Rectal suppositories Store at room temperature.
Warnings
Exercise caution in patients with impaired function of respiratory, circulatory, kidney, liver or endocrine system. Avoid extravascular and intra-arterial injection of thiopentone because it may cause pain, swelling, ulceration, necrosis and gangrene of extremities respectively.
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