KHIO 2 Flashcards
What type of drug is Nexium?
Esomeprazole: proton pump inhibitor used to treat GERD, reduce NSAID related gastric ulcers, eradicate H. pylori and treats conditions causing gastric acid hyper secretion.
MOA of Nexium?
Esomeprazole: binds to H+/K+ ATPase (proton pumps) in gastric parietal cells
- Blockage of acid secretion
- Antisecretory effect lasts longer than 24 hrs due to irreversible binding of esomeprazole to H+/K+ ATPase (new enzymes need to be expressed to resume acid secretion)
Indications for Nexium?
Acid Reflux Disorders (healing and maintaining):
- erosive esophagitis
- GERD
- peptic ulcer disease
- NSAID gastrointestinal bleeds
- H. Pylori eradication
- long term hyposecretory conditions eg. Zollinger Ellison Syndrome
Contraindications of Nexium
Hypersensitive to benzimidazoles or any of it’s components
Adverse effects of Nexium?
- Headaches
- Diarrhea
- Nausea
- Vomiting
- Stomach pain
- Gas
- Constipation
- Rash
- Drowsiness
- Nervousness
What type of drug is tropicamide?
Muscarinic Receptor Antagonist: induces mydraisis and cycloplegia
MOA of Tropicamide?
Non selective muscarinic antagonist:
binds to all subtypes of muscarinic receptors
(including CB)
- relaxes the pupillary sphincter muscle
- cause pupil dilation
- prevents accomodation (inhibits parasympathetic drive, allowing sympathetic nervous system to dominate)
Indications of Tropicamide?
- Induce mydriasis (dilation of pupil)
- Cycloplegia (paralysis of ciliary muscles in eye) for diagnostic procedures
Contraindications of Tropicamide?
- Hypersensitivity
- Narrow Angle Glaucoma (ACG attack)
Adverse Effects of Tropicamide?
- Stinging
- Dry Mouth
- Blurred Vision
What type of drug is Methotrexate?
It is known as Methoblastin. Used typically for RA, cancer and psoriasis.
-Antimetabolite
Precautions or Contraindications with Methotrexate?
- Not to be used daily
- Use cautiously with NSAIDs
Contraindications:
- renal dysfunction
- active infectious disease
- liver disease
- excessive consumption of alcohol
MOA of Methotrexate?
Metabolised to methotrexate polyglutamate
-inhibits enzymes involved in nucleotide synthesis = reduces cell devision
-RA: AICART is inhibited and accumulated
>adenosine deaminase inhibition
>adenosine triphosphate accumulation >adenosine receptors stimulated = anti-inflammatory
Adverse Effects of Methotrexate?
Ocular:
- ocular pain
- blurred vision
- peri-orbital oedema
- photophobia
- blepharitis
- NAION
- conjunctivitis
- reduced reflex tear secretion
Systemic:
- dizziness
- headaches
- swollen/tender gums
- hyperaemia
- hair loss
- mouth ulcers
- loss of appetite
Type of drug: Premarin
Estrogen: reduces symptoms of menopause like hot flushes/night sweats/urogenital atrophy
MOA of Premarin?
Conjugated estrogen: agonist for alpha and beta estrogen receptors
Estrogen modulates pituitary secretion of luteinising hormone (LH) and follicle stimulating hormone (FSH) through negative feedback
-levels of these hormones are elevated during menopause, so estrogen helps to reduce these levels.
Indications for Premarin?
- Menopausal symptoms
- prevention of postmenopausal osteoporosis (high risk of fractures/other tx not appropriate)
Contraindications of Premarin?
- Breast Cancer (estrogen dependant tumours)
- Hx of Venous Thromboembolism (VTE)
- Cerebrovascular coronary artery disease
- Severe liver disease
Side Effects of Premarin?
- DED
- Breast enlargement/tenderness
- abnormal mammogram
- Headaches
- Depression
- Bleeding
Type of Drug: Alcaine?
Local (ophthalmic) anaesthetic
MOA of Alcaine?
Reversibly binds and inhibits neuronal transmembrane voltage gated sodium channels
>inhibit nerve conduction
>reversible block of conduction through nerve fibres = local aneasthesia
Indications of Alcaine?
- Short term ocular surface anaesthesia <20mins
- Short procedures: FB removal/corneal or conj scraping for diagnostic culture/tonometry/gonioscopy
Contraindications of Alcaine?
- hypersensitivity
- eye infection/inflammation
- overactive thyroid gland
Adverse Effects of Alcaine?
- Stinging on instillation
- Punctate epithelial erosions
- Diffuse epi. k
- Hyperaemia/Lacrimation
- Corneal opacities
- Corneal ulceration/perforation from misuse
- Allergic reaction
Type of Drug: Liftegrast?
Improving signs and symptoms of dry eye with improvement after 2 weeks of usage
MOA of Liftegrast?
Lymphocyte function associated antigen 1 (LFA-1) antagonist
-competitively binds and inhibits LFA-1 from interacting with ligand, intracellular adhesion molecule 1 (ICAM-1)
>ICAM-1 over expressed in dry eye
-inhibition of cytokine release
>reducing inflammation and symptoms of dry eye
Adverse effects of Liftegrast?
- Irritation
- Reduced VA
- Dysgeusia (altered taste)
Type of Drug: Cyclosporin?
Immunomodulator: VKC/severe DED/Keratoconjunctivitis sicca
MOA of Cyclosporin?
Immunosuppressant
-inihibit interleukin 2
>prevent cytokine production
>reduced T cell mediated inflammation of lacrimal gland
allows for aqueous production = reduce ADDE
Contraindications of Cyclosporin?
- CL cant be worn until 15mins after drops instilled
- Artificial tears used 15mins after
Contraindicated:
- sensitivity
- allergy
Adverse effects of Cyclosporine?
- severe ocular pain
- stinging/burning
- swollen eyelids
- crusting eyelids
- hyperaemia
- lacrimation
- blurred vision
- FB sensation
- headaches
Type of Drug: Olmetec?
Angiotension receptor blocker used to treat HT
MOA of Olmetec?
Competitively blocks binding of angiotensin II to type 1 angiotensin receptors
>reduces angiotensin II
>vasoconstriction/sodium resoroption/aldosterone release
Reduce effect of angiotensin II on sympathetic nervous system activities and growth factors.
Indication of Olmetec?
- Hypertension (px unable to tolerate ACE inhibitors)
- Heart Failure
- Diabetic Kidney Disease
Contraindication of Olmetec?
- Renal dysfunction
- Severe hepatic impairment
- elderly
- women planning to conceive
- pregnancy
- breastfeeding
- low sodium
Adverse effects of Olmetec?
- coughing
- light headed
- HA
- stomach pain
- flu symptoms
- UTI
Type of Drug: Zocor?
PRal HMG-CoA reductase inhibitor
-lower cholesterol (LDL) production and reduce dyslipidemia associated complications (cardiac/stroke due to artery damage)
MOA of Zocor?
-targets biosynthetic pathway of cholesterol production
>inhibits rate limiting step HMG-CoA reductase = decreased cholesterol concentrations
- inhibits platelet aggregation
- reduction in inflammation at the site of atherosclerotic plaque
- improved endothelial function
Indications for Zocor?
- reduce risk of death of coronary artery disease
- familial or non-familial hypercholesterolaemia
Adverse effects of Zocor?
- gastrointestinal disorders
- myalgia
- athralgia
- upper resp. infections
- HA
- abdominal pain
- constipation
Contraindications of Zocor?
- active liver disease
- pregnancy/breastfeeding
- CYP3A4 inhibitors (erythromycin/HIV/cyclosprorin)
Type of drug: Lexapro?
selective serotonin reuptake inhibitor (SSRI)
Indications of Lexapro?
- major depressive disorder
- generalised anxiety disorder
- obsessive compulsive disorder
Contraindications of Lexapro?
- blood thinners (warfarin)
- late pregnancy
- alcohol
- NSAIDs (cause bleeding and bruising easily)
MOA of Lexapro?
enhances serotonergic activity by binding to serotonin transporter
-prevents reuptake of serotonin in presynaptic serotonergic neuron
>desensitisation of auto receptors allowing endogenous serotonin release
Adverse effects of Lexapro?
Ocular:
- burred vision
- tunnel vision
- haloes around lights
- eye pain/swelling
Systemic:
- nausea/vomiting/diarrhea
- serotonin syndrome: hallucinations/twitching/loss of coordination
- pain/burning on urination
- insomnia
What type of drug is Lipitor?
Oral antilipemic agent
-reversibly inhibits HMG-CoA reductase to lower total cholestorol
>increasing HDL cholesterol
- 14 hr half life
- metabolised in intestine and liver
Indications of Lipitor?
- primary hyperlipidemia
- dyslipidaemia
- hypertriglyceridemia
- familial hypercholestorolaemia
- prevent myocardial infarction, stroke, agina
- after CVD event
Contraindications of Lipitor?
- pregnancy
- liver dysfunctions
- use of fibric acid derivatives (erythromycin/cyclosporine)
MOA of Lipitor?
-competitive inhibitor of HMG-CoA reductase
-converts HMG-CoA to mevalonate (rate limiting step in cholesterol production)
-in the liver
>stimulate upregulation of LDL and increase hepatic uptake of LDL
Adverse effects of Lipitor?
Ocular:
- ambylopia
- dry eyes
- refraction disorder
- eye haemorrhage
- glaucoma
Systemic:
- chest pain
- infection
- HA
- edema
Type of drug: Sumatriptan?
Serotonin receptor agonist
-treats migraines and cluster headaches
Indications of Sumatriptan?
- migraines with/without auras (12> y/o)
- cluster headache treatment
Contraindications for Sumatriptan?
- other selective serotonin receptor agonists
- pregnancy
- MAO-A inhibitors
MOA of Sumatriptan?
-serotonin 5-HT1B &D. agonist
>constriction of cranial blood vessels
- inhibits release of pro-inflammatory neuropeptides
- decreases carotid arterial blood flow
- increases the velocity of internal and MCA blood flow
Adverse effects of Sumatriptan?
Ocular:
- mydraisis
- accomodation and EOM disorders
- ocular haemmorrhage
- eye pain
- glaucoma
- ocular edema
Systemic:
- flushing tingling feeling
- drowsiness
Type of Drug: Somac?
Esomeprazole: proton pump inhibitors
- treat GERD/peptic ulcers/H.pylori/NSAID related ulcer
- treat gastric acid hyper secretion
MOA of Somac?
- proton pump inhibitor at the basal gastric parietal cells
- bind to H+/K+ ATPase enzyme to inhibit these secretion of acid
Indications of Somac?
- healing of gastrointestinal disorders
- peptic ulcer
- GERD
- Zollinger-Ellison syndrome
- mod-severe reflux
Contraindications of Somac?
- HIV protease inhibitors
- hypersensitivity
Adverse Effects of Somac?
- headache
- rash
- fatigue
- increased sweating
- blurred vision
Type of Drug: Cartia?
anti platelet drug
-inhibits aggregation of platelet
>irreversibly inhibiting platelet cyclooxyrgenase for platelet lifespan
MOA of Cartia?
COX inihibitor
-reduce synthesis of thromboxane A2 (inducer of platelet aggregation)
Indications of Cartia?
- acute coronary syndromes
- hx of atherosclerosis
- relief of pain, inflammation, fever
- prevention of pre-eclampsia in women with moderate-high risk
Contraindications of Cartia?
- severe active bleeding
- increased risk of severe bleeding
Adverse effects of Cartia?
- allergy (bronchospasm)
- GI irritation
- asymptomatic blood loss and increased time of bleeding
- SJS/TEN
- iron deficiency anaemia
- intracranial haemorrhage
Type of drug: Nurofen?
NSAID to relieve symptoms of fever and pain
MOA of Nurofen?
nonselective NSAID
-analgesic/antipyretic/anti-inflammatory
-acts on COX receptors
>inhibit synthesis of prostaglandin
>inhibit COX-1 = impaired gastric and anti platelet effects
>anti-inflammatory and analgesic from COX-2 inhibitor
Indications for Nurofen?
- fever
- pain (inflammation)
- HA
- symptomatic relief of: RA/JIA
Contraindications of Nurofen?
- coagulation disorders
- heart failure
- asthma
Adverse effects of Nurofen?
- GI ulcers/bleeding
- heart failure
- renal impairment
- hypersensitivity reaction
What type of drug is Timolol?
non-selective beta-blocker
Indications for Timolol?
- closed angle glaucoma
- open angle glaucoma
Contraindications of Timolol?
- reactive airway disease (asthma/COPD)
- CVD conditions (bradycardia, AV block)
- pregnancy & breastfeeding