Pharm Flashcards
Thiazide diuretics
Hydrochlorothiazide and Chlorthalidone
Inhibits resorption of sodium and chloride at the distal convoluted tubule
Loop diuretics
Furosemide, Bumetanide, and Torsemide
Inhibits sodium and chloride resorption at the loop of Henle, and proximal and distal convoluted tubule
Potassium-sparing diuretics
Spironolactone and Eplerenone
Antagonizes aldosterone-specific mineralocorticoid receptors (primarily in the distal convoluted tubule), decreasing sodium and water reabsorption and increasing potassium retention
Lactulose MOA
Nonabsorbable disaccharide that decreases ammonia in the bloodstream by acidifying colonic contents
Can cause a nongap metabolic acidosis from large volume losses of bicarbonate.
Beta blocker affects on Heart
Increases diastolic filling time by slowing the heart rate and therefore leads to decreased cardiac contractility
Medical Management of diabetic peripheral neuropathy
1st line therapy: Pregabalin Gabapentin Amitriptyline Duloxetine
2nd line- Venlafaxine
Coumadin (Warfarin) MOA
anti-coagulant that has a mechanism of action by inhibiting vitamin K dependent clotting factors, which include II, VII, IX, X, and protein C and S.
Ibuprofen MOA
Non-selective COX inhibitor; thus promoting anti-inflammatory action via COX-2
Celebrex (celecoxib) MOA
Selective COX inhibitor that targets COX-2 and has no effect on COX-1 function
Inhibition of COX-2 allows anti-inflammatory action without the disruption of COX-1 (gastric mucosa, regulating renal blood flow, and platelet aggregation)
Aspirin MOA
Aspirin irreversibly inhibits the formation of thromboxane A2, which is required for normal platelet aggregation.
Plavix (clopidogrel) MOA
Inhibits platelet aggregation by irreversibly inhibiting an adenosine diphosphate (ADP) chemoreceptor on platelet cell membranes.
Ginkgo biloba
Herbal supplement that is marketed for the treatment of dementia, memory impairment, and vascular disorders
Potential risk of bleeding due to inhibition of binding of platelet activating factor. (so don’t use with aspirin, NSIDS and anticoagulants)
Unfractionated heparin
polysaccharide that binds to anti-thrombin III (AT III) and increases the rate of AT III inactivation of thrombin and Factor Xa
Only in hospital bc it’s given IV
Low molecular weight heparins (LMWH), such as enoxaparin
LMWH actions preferentially inhibit factor Xa, with a longer effect than that of heparins. LMWH are administered subcutaneously, but require significant dose reductions with chronic kidney disease
GPIIb/IIIa inhibitors
Abciximab (ReoPro), tirofiban (Aggrastat), and eptifibatide (Integrilin)
GPIIb/IIIa receptors are found on platelets. Activation of these receptors leads to platelet aggregation
Aspirin
irreversibly inhibits COX-1 in platelets, blocking the conversion of arachidonic acid to thromboxane A2, which is responsible for platelet recruitment and aggregation
Hunter Criteria for Diagnosing Serotonin Syndrome
Recent use of serotonergic
agent (usually in the past 5 weeks) PLUS
Any of the following:
Spontaneous clonus
Hyperreflexia AND tremor
Muscle rigidity AND hyperthermia (temp > 100.4°F) AND ocular or inducible clonus
Inducible clonus AND agitation OR diaphoresis
Ocular clonus AND agitation OR diaphoresis
linezolid is a serotonergic medication
Serotonin syndrome typically develops within 12 hours of excess serotonergic agent administration
Hyperreflexia, clonus, hyperactive bowels, and autonomic instability help differentiate it from other differential diagnoses
Lumbar puncture shows:
Extremely elevated cell count with decreased glucose
Bacterial meningitis
Lumbar puncture shows:
Extremely elevated protein with lymphocytosis
TB meningitis
Lumbar puncture shows:
Increased protein with a normal cell count
Guillain- Barre syndrome
Lumbar puncture shows:
Normal protein and glucose with lymphocytosis
Viral meningitis
Adult polycystic kidney disease (ADPKD)- Autosomal dominant
Linked to abnormalities on chromosomes 16 and 4
Patients with ADPKD should be evaluated for berry aneurysms with a CT angiogram of the head
Other associations include bicuspid aortic valve, mitral valve prolapse, and aortic dissection.
Diagnostic Criteria for Diabetes Mellitus in Adults
Presence of symptoms of hyperglycemia: polydipsia, polyuria, weight loss, blurry vision + random blood glucose ≥ 200 mg/dL
Diagnostic Criteria for Diabetes Mellitus in Adults that are asymptomatic
If the patient is asymptomatic:
Fasting plasma glucose ≥ 126 mg/dL
Two-hour plasma glucose values of ≥ 200 mg/dL during an oral glucose tolerance test
A1C values ≥ 6.5%
Diagnosing Central vs Nepphrogenic DI
Diabetes insipidus (DI) is due to a deficiency in (central DI) or decreased effect of (nephrogenic DI) vasopressin, leading to polydipsia, polyuria, and hypernatremia. When given desmopressin, a synthetic analog of vasopressin, patients with central DI show improvement, while those with nephrogenic DI show no change. Nephrogenic DI is a well-documented side effect of lithium, which is used to treat bipolar disorder.
Treatment for cocaine induced chest pain?
Benzodiazepines
Phencyclidine toxicity treatment
Benzodiazepines
Bisphosphonates
bind hydroxyapatite crystals in bone and inhibit osteoclast-mediated bone resorption