Pharmacology
Other Therapeutics (e.g., analgesics, antipyretics)
Table of Contents
Analgesics/Antipyretics
Paracetamol (Acetaminophen)
- Dose: Every 6 hours (4 doses in 24 hours).
- 2 months–3 years: 125 mg.
- 3-5 years: 250 mg.
- Class: Analgesic and antipyretic.
- Mechanism of Action: Inhibits prostaglandin synthesis, reducing pain and fever.
- Indications: Relief of mild to moderate pain, and fever reduction.
- Indications:
- Fever management
- Pain relief (e.g., headache, toothache)
- Post-immunization fever
- Musculoskeletal pain (mild to moderate)
- Management of pain in children post-surgery
- Fever due to infections
- Rheumatic disease pain
- Contraindications:
- Severe liver dysfunction
- Known hypersensitivity to paracetamol
- Active liver disease
- Caution in patients with chronic alcohol use
- Nursing Considerations:
- Monitor for signs of overdose (e.g., nausea, vomiting).
- Educate caregivers on dosage based on weight.
- Assess liver function in patients with prolonged use.
- Reinforce the importance of not exceeding the recommended dose.
- Pharmacokinetics: Absorbed from the small intestine, metabolized in the liver.
- Adverse Effects: Hepatotoxicity in overdose, rash, nausea.
Ibuprofen
- Dose: 5-10 mg/kg every 6-8 hours (max 40 mg/kg/day).
- Class: Non-steroidal anti-inflammatory drug (NSAID).
- Mechanism of Action: Inhibits cyclooxygenase (COX) enzymes, reducing prostaglandin synthesis, thereby alleviating pain, inflammation, and fever.
- Indications: Management of pain, fever, and inflammation in children, particularly for conditions like juvenile idiopathic arthritis or post-vaccination fever.
- Indications:
- Fever reduction
- Mild to moderate pain (e.g., teething pain, earache)
- Inflammatory conditions (e.g., juvenile arthritis)
- Musculoskeletal injuries (sprains, strains)
- Post-surgical pain management
- Dysmenorrhea (in older children)
- Headaches and migraines
- Contraindications:
- Hypersensitivity to ibuprofen or other NSAIDs
- Active gastrointestinal bleeding or ulceration
- Severe renal impairment
- History of asthma exacerbated by NSAIDs
- Infants under 6 months (unless prescribed)
- Concurrent use with other NSAIDs or anticoagulants
- Nursing Considerations:
- Monitor for gastrointestinal symptoms (e.g., abdominal pain, black stools).
- Administer with food to minimize gastric irritation.
- Assess renal function in prolonged use.
- Educate on hydration and watching for signs of bleeding.
- Pharmacokinetics: Well absorbed orally, metabolized in the liver, excreted via kidneys.
- Adverse Effects: Gastrointestinal upset (nausea, dyspepsia), renal impairment, rash, headache.
Anticonvulsants/Antiepileptics
Diazepam
- Class: Benzodiazepine.
- Pediatric Dose: 0.5 mg/kg (rectal).
- Mechanism of Action: Diazepam acts on the gamma-aminobutyric acid (GABA) receptors, enhancing inhibitory neurotransmission, which results in sedation, muscle relaxation, and anti-convulsant effects.
- Indications in Pediatrics: Used for febrile seizures, status epilepticus, and acute anxiety disorders in children.
- Indications:
- Management of anxiety disorders
- Treatment of muscle spasm (e.g., from cerebral palsy)
- Control of seizures (status epilepticus)
- Sedation for medical procedures (preoperative sedation)
- Management of acute alcohol withdrawal symptoms
- Treatment of hyperactivity in specific cases
- Treatment of insomnia in short-term use
- Management of panic attacks
- Contraindications:
- Hypersensitivity to benzodiazepines
- Severe respiratory insufficiency (e.g., sleep apnea)
- Acute narrow-angle glaucoma
- Myasthenia gravis
- Pregnancy (especially during the first trimester)
- Lactation (not recommended in breastfeeding mothers)
- Children under six months of age (unless in severe cases)
- Nursing Considerations:
- Monitor vital signs (respiration, heart rate) closely during treatment.
- Assess for sedation levels and degree of muscle relaxation.
- Educate families about the potential for dependence and withdrawal symptoms.
- Administer the drug slowly intravenously (if applicable) to prevent hypotension.
- Side Effects: Sedation, dizziness, hypotension, and respiratory depression. In children, excessive drowsiness and ataxia can occur.
Phenobarbital
- Dose: 3-5 mg/kg/day oral/IV (loading 20 mg/kg for status epilepticus).
- Class: Barbiturate.
- Mechanism of Action: Enhances GABA-mediated inhibition, prolongs chloride channel opening.
- Indications: Neonatal seizures, febrile convulsions, status epilepticus.
- Indications:
- Control of seizures (e.g., neonatal seizures)
- Management of status epilepticus
- Treatment of febrile seizures
- Sedation in certain medical procedures
- Management of insomnia (short-term)
- Prevention of seizures in high-risk neonates
- Management of withdrawal syndromes
- Contraindications:
- Hypersensitivity to barbiturates
- Severe liver dysfunction
- Porphyria
- Respiratory depression
- Pregnancy (risk of fetal harm)
- Nursing Considerations:
- Monitor respiratory rate and sedation levels.
- Assess liver function tests periodically.
- Educate on potential cognitive effects with long-term use.
- Taper dose gradually to avoid withdrawal seizures.
- Pharmacokinetics: Long half-life (up to 100 hrs in neonates), metabolized in liver.
- Adverse Effects: Sedation, cognitive impairment, respiratory depression, hyperactivity (paradoxical).
Respiratory Drugs
Salbutamol (Albuterol)
- Dose:
- Inhaler: 100–200 mcg (1–2 puffs) every 4–6 hrs.
- Nebulizer: 2.5 mg every 4–6 hrs.
- Oral: 2–4 mg 6–8 hourly.
- Class: Beta-2 adrenergic agonist (short-acting).
- Mechanism of Action: Relaxes bronchial smooth muscle via beta-2 receptors.
- Indications: Asthma exacerbations, bronchiolitis, croup.
- Indications:
- Acute asthma exacerbations
- Bronchiolitis
- Croup (laryngotracheobronchitis)
- Wheezing due to respiratory infections
- Exercise-induced bronchoconstriction
- Chronic obstructive pulmonary disease (COPD) in older children
- Allergic reactions with bronchospasm
- Contraindications:
- Hypersensitivity to salbutamol
- Uncontrolled tachyarrhythmias
- Caution in hyperthyroidism
- Severe cardiovascular disorders
- Nursing Considerations:
- Monitor heart rate and respiratory function.
- Teach proper inhaler/nebulizer technique.
- Assess for tremor or palpitations.
- Rinse mouth after inhalation to prevent thrush.
- Pharmacokinetics: Rapid onset (5–15 min inhaler), duration 4–6 hrs.
- Adverse Effects: Tremor, tachycardia, hypokalemia, hyperactivity.
Vitamins and Minerals
Vitamin A
- Dose:
- Supplementation: 100,000 IU at 6 months, 200,000 IU every 6 months (9–59 months).
- Class: Fat-soluble vitamin.
- Mechanism of Action: Essential for vision, immune function, epithelial integrity.
- Indications: Prevention/treatment of vitamin A deficiency, measles complications.
- Indications:
- Prevention of vitamin A deficiency
- Treatment of xerophthalmia
- Measles prophylaxis
- Malnutrition support
- Immunocompromised children
- High-risk populations (e.g., refugees)
- Support in respiratory infections
- Contraindications:
- Hypervitaminosis A
- Known hypersensitivity
- Caution in liver disease
- Pregnancy (high doses)
- Nursing Considerations:
- Administer with fatty meal for absorption.
- Monitor for signs of toxicity (headache, nausea).
- Educate on dietary sources (carrots, liver).
- Pharmacokinetics: Stored in liver, fat-soluble.
- Adverse Effects: Toxicity: hypercalcemia, hepatotoxicity.
Zinc Sulfate
- Dose: 20 mg elemental zinc daily for 10–14 days (diarrhea treatment).
- Class: Mineral supplement.
- Mechanism of Action: Supports immune function, enzyme activity, wound healing.
- Indications: Acute diarrhea (reduces duration/severity), malnutrition.
- Indications:
- Treatment of acute diarrhea
- Prevention of diarrhea in malnourished children
- Wound healing
- Immune support in infections
- Growth retardation in deficiency
- Acrodermatitis enteropathica
- Supplementation in sickle cell disease
- Contraindications:
- Known hypersensitivity
- Copper deficiency (zinc interferes)
- Caution in renal impairment
- Nursing Considerations:
- Give with ORS for diarrhea.
- Monitor for nausea; take with food.
- Assess growth parameters.
- Pharmacokinetics: Absorbed in small intestine.
- Adverse Effects: Nausea, vomiting, abdominal pain.
Other Therapeutics
Oral Rehydration Salts (ORS)
- Dose: 75 mL/kg in first 4 hrs, then 5 mL/kg after each loose stool.
- Class: Electrolyte replacement.
- Mechanism of Action: Rehydrates by glucose-sodium co-transport in gut.
- Indications: Dehydration from diarrhea, vomiting.
- Indications:
- Mild to moderate dehydration
- Gastroenteritis
- Heat-related dehydration
- Post-surgical fluid replacement
- Maintenance in chronic conditions
- Contraindications:
- Severe dehydration (IV preferred)
- Unconsciousness
- Nursing Considerations:
- Teach mixing (1 sachet/liter boiled water).
- Monitor intake/output.
- Adverse Effects: None if used correctly; hypernatremia if overconcentrated.
Adrenaline (Epinephrine)
- Dose: 0.01 mg/kg IM (anaphylaxis).
- Class: Adrenergic agonist.
- Mechanism of Action: Alpha/beta stimulation → vasoconstriction, bronchodilation.
- Indications: Anaphylaxis, cardiac arrest.
- Indications:
- Anaphylaxis
- Cardiac arrest
- Severe asthma exacerbations
- Croup (nebulized)
- Hypotension in shock
- Contraindications:
- None in emergencies
- Caution in hypertension
- Nursing Considerations:
- Use EpiPen if available.
- Monitor HR, BP.
- Adverse Effects: Tachycardia, anxiety, hypertension.
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