B: 8-13 Flashcards
Non selective B-R antagonists
Propranolol
Timolol
Pindolol
Sotalol
Pls Tell People Sorry- we dont treat CHF
Which Non selective B-R antagonists is given topically?
To treat what?
Timolol
Glaucoma
Propranolol drug properties
Oral, Parenteral Higly lipid solubule Freely enters CNS 4-6 h Local anesthetic effect
Which Non selective B-R antagonists has a local anesthetic effect and how?
Propranolol
Bcs. it inhibits Na+ ch.
Propranolol indications
Angina Antiarrhytmic class II HTN Thyrotoxicosis Migraine prophylaxis Essential tremor
How does Propranolol treat angina?
↓ HR
↑ diastolic perfusion
↓ O2 demand
Pindolol drug features
Intrinsic sympathoimetic activity
Local anesthetic effect
Pindolol indications
Hypertensive treatment in asthma/COPD patients
Avoid in HF!
Which Non selective B-R antagonists should be avoided in HF?
Pindolol
Sotalol R preferance
B non selective
K+ ch. antagonist
Sotalol
How to give? Duration of action?
Oral
7 h
Sotalol indications
Antyarrhythmic class III
Ventricular arrhythmias
A. Fib
Sotalol side effects
Dose dependent Torsade-de-Pointes
אתה שותה סודה וזה מוריד ומרים אותך כמו טידיפי באקג
B1 selective antagonists
Metoprolol
Bisoprolol
Nevibolol
Esmolol
A-BEAM
Atenolol Bisoprolol Esmolol Acebutalol- partia agonis Metoprolol
Metoprolol
Bisoprolol
Nevibolol
Indications
HTN CHF Angina AA class II Acute coronary syndrome
Which B blocker has an NO dependant vasodil. effect?
Nebivolol
Metoprolol
Bisoprolol
Nevibolol
Which has the longest duration of action?
Bisoprolol
עושה להם בית ספר
Which B blocker has a local anesthetic effect?
Metoprolol
Which B blocker has a short (10 min) duration of action?
Esmolol (IV)
Esmolol indications
Arrhythmias assosiated with thyroid storm
Perioperative
Hypertensive emergencies
B blockers side effects
AV block Bradyarrhythmias Bronchospasms CNS seadtion Sleep disturbance Hypoglycemia Hyperlipidemia
Highest lipid solubility B blockers
Propranolol
Nebivolol
Bisoprolol
Peanut butter N jelly it has a lot of fat
lowest lipid solubility B blockers
Atenolol
Sotalol
Acebutalol
If you want nice ass you need to eat less fat
B blockers contraindications
Acute heart failure
Cardiogenic shcok
Careful in case of Asthma/COPD
Careful in DM
B blockers with local anesthetic effect
Pindolol
Metoprolol
Propranolol
Spasmolytic agents
Diazepam: GABA-A agonist
Baclofen: GABA-B agonist
Tizanidine: a2 agonist
Tolperisone: Inhibition of Ca2+ and Na+ ch.
Diazepam receptror preferance
GABA-A
DiAAAAAzepam
Diazepam MOA
Increases interneuron inhibition of primary motor afferents in spinal cord
Diazepam metabolism and duration of action
Hepatic
12-24 h
Diazepam indications
Chronic spasm (Cerebral palsy, stroke, spinal injury) Acute spasm due to muscle injury
Diazepam side effects
CNS depressant
Tolerance
Dependent liability
What is an GABA-B agonist?
Baclofen
Baclofen MOA
Pre and post synaptic inhib. of motor output in the spinal cord
Baclofen
How to give?
Oral
Intrathecal
Baclofen indications
Spasm (Cerebral palsy, stroke, multiple sclerosis)
Baclofen side effects
Sedation
Weakness
Rebound spasticity when abrupt withdrawal
Spasmolytic a2 agonist
Tizanidine
Tizanidine
Tell me about it
Pre and post synaptic inhibition of reflex motor output in the spinal cord
Oral
Renal and hepatic elimination
3-6 h
Tizanidine indications
Spasm (stroke, multiple sclerosis)
Tizanidine side effects
Wekness Sedation Hypotension Hepatotoxiciy Rebound HTN when abrupt withdrawal
Tolperisone MOA
Inhibition of muscle stretch reflex
Reduction of muscle reflex
Oral
Hungarian
Tolperisone indication
Acute spasm due to muscle injury
No used in chronic spasm
Tolperisone side effects
Sedation
Confusion
Ocular effects
Strong anti muscarinic effects
Direct acting muscle relaxants
Dantrolene
Botulinium toxin
Dentrolene MOA
RyR1 antagonist → Blocks Ca2+ release ch. in the Sarcoplamis reticulum of skeletal muscle → reduces actin-myosin interaction
Dentrolene
How to give? Duration?
Oral, IV
4-6 h
Dentrolene indications
Malignant hyperthermia
Neuroleptic malignant syndrome
Spasm (Crebral palsy, multiple sclerosis)
Dentrolene side effects
Muscle weakness
Hepatotoxicity