Pharm III Final Exam Flashcards

1
Q

what drugs are considered beta lactase?

A

penicillin, ampicillin, methicillin, piperacillin, azetreonam, impimenem and cephalosporins

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2
Q

what antibiotic classes target 30S inhibitors?

A

ahminoglycosides and tetracyclines

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3
Q

what antibiotic classes target 50S inhibitors?

A

macrolides, clindamycin, linezolid and chloramphenicol

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4
Q

what conditions are augmentin good for?

A

AOM, rhino sinusitis, pneumonia, UTI, GU, skin and soft tissue infections

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5
Q

what condition is zosyn good for?

A

abdominal infections

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6
Q

what are the adverse effects of beta lactase?

A

hepatotoxicity: agranulocytosis, thrombocytopenia, neutropenia

hepatotoxicity: DILI, cholestastic hepatic, acute hepatitis

neurotoxicity: seizures, status epilepticus, hallucinations, encephalopathy

nephrotoxicity: interstitial nephritis

mitochondrial toxicity

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7
Q

what antibiotics cross the BBB?

A

ceftriaxone, cefotaxime, vancomycin with rifampin

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8
Q

what is empiric therapy for community acquired disease in immunocompetent patients?

A

ceftriaxone or cefotaxime, if severe add vancomycin,

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9
Q

what is empiric therapy for community acquired disease in old or immunocompromised patients?

A

ceftriaxone or cefotaxime plus amoxicillin and vancomycin

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10
Q

what is empiric therapy for nosocomial disease?

A

vancomycin and ceftazidime or cefepime

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11
Q

treatment for otitis media?

A

amoxicillin, cefdinir, cefpodoxime, cefuroxime or ceftriazone

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12
Q

treatment of otitis media with beta lactam allergy?

A

doxycycline, azithromycin, clarithromycin

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13
Q

treatment of acute bacterial rhino sinusitis?

A

amoxicillin or augmentin

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14
Q

treatment of acute bacterial rhino sinusitis with penicillin allergy?

A

doxycycline or 3rd generation cephalosporin

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15
Q

outpatient treatment of CAP with no comorbidities

A

amoxicillin plus macrolide or doxycycline

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16
Q

outpatient treatment of CAP with comorbidities

A

augmentin cephalosporin with macrolide or doxycycline

or monotherapy fluoroquinolone

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17
Q

inpatient treatment of CAP with no comorbidites

A

beta lactam plus macrolide

or mono therapy fluoroquinolone

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18
Q

inpatient treatment of CAP with comorbidiites

A

linezolid plus pseudomonas coverage

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19
Q

triple treatment of H. pylori

A

PPI, amoxicillin, clarithromycin

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20
Q

quadruple treatment of H. pylori

A

PPI, bismuth, metronidazole, tetracycline

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21
Q

small intestinal bacterial overgrowth treatment

A

rifaximin, TMP-SMX, cipro, augmentin

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22
Q

treatment of uncomplicated UTI

A

cipro, levofloxacin, TMP-SMX

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23
Q

outpatient treatment of complicated UTI

A

ertapenem or ceftriazone with cipro, levofloxacin or TMP-SMX

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24
Q

inpatient complicated UTI treatment

A

ceftriaxone

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25
prostatis treatment
fluoroquinolone or TMP-SMX
26
gonorrhea treatment
ceftriaxone
27
chlamydia treamtnet
doxycline
28
syphilis treatment
pen G
29
PID treatment
ceftriaxone, doxycycline and metronidazole
30
erysipelas treatment
penicillin, amoxicillin, cephalexin or cefadroxil
31
treatment of skin and soft tissue infection with sepsis or immunocompromised
vancomycin plus efepime
32
treatment of skin and soft tissue infection without MRSA risk
dicloxaacillin, cephalexin or cefadroxil
33
treatment of skin and soft tissue infections with MRSA risk
TMP-SMX, amoxicillin and doxycycline or linezolid
34
what are the fat soluble vitamins
ADEK
35
what are the water soluble vitamins
B complex and C
36
signs of B1 deficiency
beriberi: neuropathy, muscle weakness, cardiomegaly, edema, ophthalmoplegia, confabulation
37
signs of B2 deficiency
magenta tongue, stomatitis, seborrhea, cheilosis, ocular symptoms
38
sign of B3 deficiency
pellagra: dermatitis, red tongue, diarrhea, apathy, dementia, disorientation
39
signs of B6 deficiency
seborrhea, glossitis, convulsions, neuropathy, depression, confusion, microcytic anemia
40
signs of B9 deficiency
megaloblastic anemia, glossitis, depression, elevated homocysteine
41
signs of B12 deficiency
megaloblastic anemia, loss of vibration and proprioception, abnormal gait, demential, impotence, loss of bladder and bowel control, increased homocysteine and MMA
42
signs of vitamin C deficiency
scurvy: petechiae, ecchymosis, coiled hair, inflamed gums, join pain, poor wound healing
43
signs of vitamin A deficiency
MCC of blindness in developing countries xerophthalmia, night blindness, bitot spots, follicular hyperkeratosis, impaired embryonic development, immune dysfunction
44
signs of vitamin D deficiency
rickets: skeletal deformity, rachitic rosary, bow legs, osteomalacia
45
signs of vitamin E deficiency
peripheral neuropathy, spinocerebellar ataxia, muscle atrophy, retinopathy
46
signs of vitamin K deficiency
elevated PTT, bleeding
47
what benefits does vitamin A provide?
vision and skin
48
what benefits does vitamin D provide?
bone health
49
who should be cautious when taking vitamin D?
hypercalcemia, renal failure, kidney stones, hyperphosphatemia
50
D3 is also known as what and it comes from what?
cholecalciferol, sun
51
D2 is also known as what and it comes from what?
ergocalciferol, food
52
what are the benefits of vitamin E?
antioxidant
53
what are the benefits of vitamin K?
synthesis of coagulation factors VII, IX, X, II
54
what is vitamin K1, K2 and K3?
K1: phytonadione K2: menaquinone K3: menadione
55
what are signs of calcium deficiency?
osteoporosis
56
what are signs of copper deficiency?
anemia, growth retardation, defective keratinization and pigmentation of hair, hypothermia, degemnative changes in aortic elastin, mental deterioration
57
what are signs of fluoride deficiency?
dental caries
58
what are signs of iodine deficiency
thyroid enlargement, low T4, cretinism
59
what are signs of iron deficiency?
pica, anemia, impaired cognitive development, muscle abnormalities, premature labor, increased perinatal maternal death
60
what are signs of phosphorus deficiency?
rickets, proximal muscle weakness, rhabdo, paresthesia, ataxia, seizures, confusion, HF, acidosis
61
what are signs of zinc deficiency?
growth retardation, decreased taste and smell alopecia, diarrhea, FTT, gonadal atrophy, congenital malformation
62
what vitamin can harm the baby during pregnancy?
A
63
what prenatal vitamin should be taken >1 month prior to conception or ASAP after conception and why?
folic acid, prevents neural tube defects
64
what nutritional deficiencies are associated with bariatric surgery?
B12, ADEK, calcium, iron
65
adverse effects of vitamin A?
dry skin, hyperpigmentation, alopecia, night sweats, anorexia, hepatomegaly, hyperlipidemia, polyuria, albuminuria, arthralgia, growth retardation, hypomenorrhea, increased ICP, ataxia, headache
66
adverse effects of vitamin D?
HTN, dysrhythmia, metallic taste, dry mouth, anorexia, bone pain, fatigue, headache
67
adverse effects of vitamin E?
n/v, flatulence, BUN elevation, weakness, increased bleeding, blurry vision, dizziness
68
adverse effects of vitamin K?
urticaria, hyperbilirubinemia, hemolytic anemia, headache, brain damage
69
adverse effects of B1?
angioedema, pruritus, cyanosis, CV collapse
70
adverse effects of B2?
urine discoloration
71
adverse effects of B3?
hypotension, anxiety, dysrhythmia, peptic ulcer, hepatitis, hyperuricemia, hyperglycemia, flushing
72
adverse effects of B6?
paresthesia, flushing, lethargy
73
adverse effects of B12?
itching, diarrhea, fever, vascular thrombosis, optic nerve atrophy, flushing
74
adverse effects of vitamin C?
abdominal cramping, renal stones
75
calcium toxicity
renal insufficiency, nephrolithasis, impaired iron absorption
76
fluoride toxicity
dental and skeletal fluorosis, osteosclerosis
77
iron toxicity
GI, organ damage
78
copper toxicity
n/v/d, hepatic failure, hemolytic anemia, mental deterioration
79
zinc toxicity
gastritis, sweating, respiratory distress, pulmonary fibrosis
80
risks of CAM
small amount of research, misses and harm can result due to increasing public use and inadequate communication
81
pharmacological effects of echinacea
immune modulation: increased phagocytosis, monocytes, neutrophils and NK cells anti-inflammatory: inhibits COX, 5-lipoxygenease and hyaluronidase, eczema benefit antibacterial, fungal and antioxidant effects
82
adverse effects of echinacea
unpleasant taste, GI upset, allergy
83
pharmacologic effects of garlic
CV and metabolic: inhibits HMG-CoA reductase, reduces cholesterol and LDL antimicrobial antineoplastic: inhibits precarcinogens for colon, esophagus, lung, breast and stomach possible systolic and diastolic reduction
84
adverse effects of garlic
nausea, hypotension, allergy, odor, bleeding
85
avoid garlic with
warfarin, aspirin, ibuprofen
86
avoid echinacea with
compromised immune system, AI disorders, immunosuppresants
87
pharmacological effects of ginkgo
CV: increased blood flow, reduces blood viscosity, vasodilation CNS: cognition and ADL improvement with dementia and negative affects in schizophrenia
88
adverse effects of ginkgo
nausea, headache, stomach upset, diarrhea, allergy, anxiety, insomnia
89
avoid ginkgo
antiplatelets, anticoagulants, seizure disroders
90
pharmacological effects of ginseng
cold prevention, lower postprandial glucose, cancer related fatigue
91
avoid ginseng
psych patiens, estrogen or hypoglycemic medication, warfarin
92
pharmacologic effect of St. John's Wort
antidepressant
93
adverse effect of St. John's Wort
photosensitivity
94
avoid St. John's Wort
stimulants, decreases effective of: digoxin, OC, cyclosporine, HIV meds, warfarin, anticonvulsants
95
pharmacological effects of saw palmetto
BPH: blocks conversion of testosterone to dihydrotestosteeon by 5 alpha reductase
96
adverse effects of saw palmetto
abdominal pain, n/d, headache, fatigue, decreased libido, rhinitis
97
what is coenzyme 10 used for?
HTN, CAD, chronic stable angina, prevention of statin induced myopathy, HF
98
pharmacological effects of glucosamine
knee osteoarthritis used to produce glycosaminoglycans and proteoglycans in articular cartilage
99
adverse effects of glucosamine
mild diarrhea, abdominal cramping, nausea
100
avoid glucosamine with
shellfish allergy, increases INR in warfarin
101
pharmacological effects of melatonin
insomnia, sleep induction, jet lag, can reduce anxiety
102
adverse effects of melatonin
drowsiness, fatigue, headache, irritability, depression, dysphoria, BP changes
103
avoid melatonin with
NSAIDs, antidepressants, BB
104
what drug is FDA banned due to counting ephedrine alkaloids causing unreasonable CV risks?
ephedra or Ma huang
105
pharmacological effects if red yeast rice
statin activity
106
describe homeopathy
symptoms are treated with a very dilute substance that would cause the same symptoms if given at a high dose, little to no active ingredient
107
what is enteral nutrition?
any method of feeding that uses GI tract
108
what is parenteral nutrition?
delivery of calories and nutrients through vein
109
advantages of enteral nutrition
Maintains normal metabolic pathways Allows delivery of a full range of nutrients Triggers the release of cholecystokinin Preserves hepatic lipid metabolism Maintain normal intestinal pH and flora Supports GI tract as an organ of the immune system Promotes wound healing Lowers cost Reduces infectious complications
110
indications of enteral nutrition
Poor oral intake: will not eat Anorexia, depression, disability, eating disorder, early satiety, nausea, painful swallowing Unsafe oral intake: can’t eat Altered LOC, dysphagia, ET intubation, gastroparesis, impaired sucking swallowing, proximal intestinal obstruction Elevated needs: can’t eat enough Burns, open wounds, pressure ulcers, sepsis, trauma
111
indications of parenteral nutrition
Anyone who cannot and will not eat or cannot maintain their fluid and/or nutritional status by oral eating or by tube feeding may be appropriate for IV nutrition Conditions that impair nutrient absorption: Short bowel syndrome, enterocutaneous fistula, infectious colitis, radiation, chemotherapy effects, small bowel obstruction Need for bowel rest: IBD, ischemic bowel, severe pancreatitis, chylous fistula, preoperative status, NPO Motility disorders: Prolonged ileus, scleroderma, pseudo-obstruction visceral organ myopathy Inability to achieve or maintain enteral access: Unstable clinical condition, hyperemesis gravidarum, eating disorder
112
peripheral parenteral nutrition
mild to moderately stressed patient who is expected to have adequate GI function in 10-14 days, requires no fluid restriction, cannot require nutrients in large amounts
113
central parenteral nutrition
preferred, for those who need nutrition 14+ days
114
considerations for continuous PN administration
unstable patients with unstable fluid balance or glucose homeostasis
115
considerations for intermittent PN administration
Generally given over 12-18 hours per day Useful for hospitalized patients with limited venous access and infusion in interrupted by administration of other medications May minimize incidence or reverse liver injury that can occur with continuous infusion If patient receiving PN at home, allows a more “normal” lifestyle
116
NHLBI Obesity Treatment Guidelines
25.0-26.9: diet, exercise, behavioral therapy 27.0-29.9: diet, exercise, behavioral therapy and pharmacotherapy with comorbidities 30.0-34.9 (class 1): diet, exercise, behavioral therapy, pharmacotherapy and lap band surgery with comorbidities 35.0-39.9 (class 2): diet, exercise, behavioral therapy, pharmacotherapy, surgery with comorbidities >40 (class 3): diet, exercise, behavioral therapy, pharmacotherapy, surgery
117
central obesity
Correlates with high levels of intra-abdominal or visceral fat Can be approximated by measuring waist circumference: Measured at narrowest point between last rib and top of iliac crest High risk >40 inches in men >35 inches in women
118
GLP-1 Receptor Agonist MOA
selective glucagon-like peptide-1 receptor agonist that increases glucose dependent insulin secretion, decreases inappropriate glucagon secretion, slows gastric emptying, also acts in the areas of the brain involved in regulation of appetite and caloric intake
119
Liraglutide side effects
Nausea, hypoglycemia, diarrhea, constipation, vomiting, headache, decreased appetite, dyspepsia, fatigue, dizziness, abdominal pain, increased lipase Black box: causes dose-dependent and treatment duration-dependent thyroid C-cell tumors at clinically relevant exposures in both genders of rats and mice, human effect is unknown Serious Hypoglycemia Heart Rate Increase SI Renal impairment
120
Liraglutide contraindications
Personal or family history of medullary thyroid carcinoma or MEN 2 Pregnancy
121
Semaglutide side effects
Abdominal pain, nausea, diarrhea, constipation, vomiting, decreased appetite Black box: causes dose-dependent and treatment duration-dependent thyroid C-cell tumors at clinically relevant exposures in both genders of rats and mice, human effect is unknown Cardiovascular effects: Increased resting heart rate has been observed in placebo-controlled trials. Gallbladder disease: Use of GLP-1 agonists may increase risk of gallbladder and bile duct disease. Cholelithiasis has been reported in patients treated with semaglutide; substantial or rapid weight loss may increase risk. pancreatitis, psychiatric, renal
122
semalgutide contraindications
Personal or family history of medullary thyroid carcinoma or MEN 2
123
orlistat MOA
reversibly inhibits gastric and pancreatic lipases, inhibits absorption of dietary fats by 30%
124
orlistat side effects
Most common: Oily rectal leakage Flatus with discharge, fecal urgency, fatty/oily stool, oily evacuation, increased defecation, and fecal incontinence
125
orlistat contraindications
Chronic malabsorption syndrome Cholestasis Pregnancy
126
Naltrexone/Bupropion side effects
nausea, constipation, headache, vomiting, dizziness, insomnia, dry mouth and diarrhea. HTN, tachycardia, hepatotoxicity, acute angle closure glaucoma
127
Naltrexone/Bupropion contraindications
Uncontrolled hypertension. Seizure disorders, anorexia nervosa or bulimia, or undergoing abrupt discontinuation of alcohol, benzodiazepines, barbiturates, and antiepileptic drugs. Use of other bupropion-containing products. Chronic opioid use. During or within 14 days of taking monoamine oxidase inhibitors (MAOI). Pregnancy
128
phentermine MOA
educes appetite most likely due to CNS effect
129
phentermine side effects
Insomnia, increased heart rate, dry mouth, taste alteration, dizziness, tremors, headache, diarrhea, constipation, vomiting, gastrointestinal distress, anxiety, and restlessness Primary pulmonary hypertension has been reported in use of phentermine with fenfluramine, development of tolerance, effects ability to engage in hazardous tasks, safety with serotonergic agents such as SSRIs has not been established Indicated as short-term monotherapy
130
phentermine contraindications
Pregnancy History of cardiovascular disease or stroke Use of MAO inhibitors Hyperthyroidism Glaucoma Agitated states Uncontrolled hypertension History of drug abuse Seizures
131
phentermine/topiramate
long term use Option for males and post-menopausal females without uncontrolled HTN or CAD Use in caution in females with childbearing potential due to risk of fetal malformations
132
phentermine/topiramate side effects
paresthesia, dizziness, dysgeusia, insomnia, constipation, and dry mouth. Fetal Toxicity: Females of reproductive potential must obtain a negative pregnancy test before treatment and monthly thereafter; use effective contraception. (REMS program). Increase in Heart Rate: Monitor heart rate in all patients, especially in cardiac or cerebrovascular disease. Suicidal Behavior and Ideation: Monitor for depression or suicidal thoughts. Discontinue if develop. Mood and Sleep Disorders: Consider dose reduction or d/c for clinically significant or persistent symptoms. Cognitive Impairment: May cause disturbances in attention or memory. Caution patients about operating automobiles or hazardous machinery when starting treatment. Metabolic Acidosis: Measure electrolytes before/during treatment. Elevated Creatinine
133
phentermine/topiramate contraindications
Glaucoma Hyperthyroidism During or within 14 days of taking monoamine oxidase inhibitors Pregnancy
134
Lorcaserin side effects
In non-diabetic patients: headache, dizziness, fatigue, nausea, dry mouth, and constipation. In diabetic patients, most common adverse reactions are hypoglycemia, headache, back pain, cough, and fatigue. Removed from market due to increased risk of cancer
135
obesity monitoring
Every 6 weeks for all patients Weight: if patient does not lose 4-5% of body weight after 12 weeks of therapy and max tolerated dose → taper and discontinue BP and HR Electrolytes with phentermine/topiramate Ask about adverse effects
136
herbal products not recommended for weight loss
Garcinia cambogia Widely marketed for weight loss Cases of acute hepatitis and acute liver failure resulting in need for liver transplant have been reported (thought to be associated with active ingredient, hydroxycitric acid) Supplements can also be contaminated with a hepatotoxic substance (sibutramine) Green Tea and Coffee Extract Activity is due to caffeine Chromium picolinate Side effects mostly CNS (headache, mood changes) Use with caution in renal and hepatic impairment, diabetes
137
appetite stimulants in cancer patients
Dronabinol Antiemetic, appetite stimulant, cannabinoid Side effects of CNS effects, euphoria, tachycardia Risk of substance abuse Megestrol Progestin hormone Similar side effects to corticosteroids Adrenal suppression, cushing syndrome, diabetes, thromboembolism Cyproheptadine Used off label for decreased appetite secondary to chronic disease First generation H1 antagonist MOA: potent antihistamine and serotonin antagonist with anticholinergic effects, competes with histamine for H1 receptor sites on effector cells in the GI tract, blood vessels and respiratory tract Contraindicated in: newborns and infants, breastfeeding mothers, elderly, concurrent MAOI use, angle closure glaucoma, stenosing peptic ulcer, symptomatic prostatic hypertrophy, bladder neck obstruction pyloroduodenal obstruction
138
appetite stimulation in elderly
Megestrol Dronabinol: well studies but has significant CNS side effects Mirtazapine: antidepressant Ghrelin mimetics: growth hormone secretagogues: new, not well studied Treat depression if present Treat and manage dementia if present
139
hepatitis B nucleoside analogs treatment options
MOA: incorporated into viral DNA causing chain termination Entecavir, tenofovir disoproxil, tenofovir alafenamide Drugs with a high barrier to resistance are preferred to ones with low barrier Also have some activity against HIV Generally, well tolerated with some fatigue, elevated CPK and GI disturbances Limitations Lamivudine: HBV resistance to drug is high Adefovir: less effective Entecavir Effective against HBV strains that are resistant to other drugs Once daily dosing Dose adjustment with renal dysfunction Should not be used with other renal toxic medications Tenofovir Tenofovir alafenamide → only indicated for HBV Tenofovir disoproxil fumarate → indicated for HBV and HIV
140
hepatitis B interferons treatment options
IFN-alfa and pegylated-IFN-alfa Flu like symptoms, fatigue, depression Dose limiting toxicity Bone marrow suppression, severe fatigue, weight loss, neurotoxicity (somnolence and behavioral disturbances), AI disorders, cardiovascular problems 48 week treatment duration
141
HCV treatment
Direct acting anti-HCV agents (DAAs) NS3/4A protease inhibitors: -previr NS5A inhibitors: -asvir NS5B polymerase inhibitors: -buvir
142
goals of treatment for portal HTN and varices
Resolution of acute complications Tamponade of bleeding and resolution of hemodynamic instability for an episode of acute variceal hemorrhage Prevention of complications through lowering of portal pressure with medical therapy and/or supporting abstinence from alcohol
143
approach to treatment of portal HTN
Primary prophylaxis is to prevent first bleeding episode Screen for varices upon diagnosis Use nonselective beta adrenergic blocker therapy: propranolol, nadolol or carvedilol MOA: decrease portal pressure by decreasing cardiac output and decreasing splanchnic blood flow Continue indefinitely Monitor for contraindications that may develop → renal impairment or hypotension Carvedilol is believed to be better tolerate than the pure nonselective beta adrenergic blockers Beta adrenergic blocker therapy is not indicated if varices are not present Endoscopic vein ligation is an alternative
144
management of varices
Specific interventions to control the acute hemorrhage and prevent complications Initial treatment goals Adequate resuscitate blood volume Protect the airway from blood aspiration Prophylaxis against spontaneous bacterial peritonitis (SBP) and other infections Control bleeding Prevent rebleeding Preservation of liver function of HE Acute kidney injury prevention Start octreotide (antidiarrheal, somatostatin analog) Start early to control bleeding and facilitate endoscopy Initiate prophylactic antibiotics to prevent spontaneous bacterial peritonitis (SBP) in ALL patients upon admission For patients with cirrhosis + acute variceal bleeding, Ceftriaxone IV recommended and preferred due to high quinolone resistance Other option: ciprofloxacin (oral) Can also administer erythromycin IV before endoscopy Accelerates gastric emptying of clots and improves visibility during endoscopy Patients with advanced disease are more likely to fail octreotide and endoscopic variceal ligation (EVL) and need a transjugular intrahepatic portosystemic shunt (TIPS)
145
management of ascites
Alcohol abstinence Sodium restriction Diuretics Spironolactone and furosemide or spironolactone alone Stop diuretics if Uncontrolled or recurrent encephalopathy Severe hyponatremia despite fluid restriction Renal insufficiency If tense ascites is present, perform paracentesis before diuretics and salt restriction Consider liver transplant with refractory ascites
146
treatment of spontaneous bacterial peritonitis
If documented or suspected SBP, Abx need to cover Escherichia coli, Klebsiella pneumoniae, and pneumococci. Drug of choice- Cefotaxime, IV (or similar 3rd generation cephalosporin) x 5 days Alternatives for community-acquired SBP: ceftriaxone or piperacillin/tazobactam After recovery, patients should be on long-term, daily, oral antibiotic prophylaxis with ciprofloxacin
147
how to lower ammonia with hepatic encephalopathy
Lactulose (lactitol)- can be administered orally or by retention enema Encourages passage of ammonia in the stool Polyethylene glycol- also effective for acute HE Antibiotics Rifaximin- when added to lactulose, is superior for recurrent HE Zinc Patients with HE are frequently deficient in zinc Supplementation not recommended in absence of deficiency Zinc can inhibit copper absorption which can lead to anemia Flumazenil- used for short-term therapy in refractory HE with suspected or confirmed benzodiazepine intake
148
treatment options for intestinal gas
simethicone, alpha-galactosidase, lactase replacement
149
simethicone
Indicated for flatulence MOA: defoaming agent: reduces surface tension of gas bubbled embedded in mucus in GI tract, as surface tension changes, gas bubbles are broken No systemic absorption Is often combined with antacids
150
alpha-galactosidase
Indicated for flatulence MOA: hydrolyzes oligosaccharides into smaller parts to be metabolized by intestinal bacteria Enzyme is derived from aspergillus fungus Used for treatment of intestinal gas produced by high fiber diets or foods containing oligosaccharides such as legumes and cruciferous vegetables Must be taken before or within initial bite of food Caution in DM patients Avoid with mold allergy
151
lactase replacement
MOA: lactase enzymes break down lactose, a disaccharide, into monosaccharides glucose and galactose Aids in dairy digestion
152
indications of intestinal gas with more severe disease
Intestinal gas symptoms that persist for more than several months or occur more often than occasionally (several times a month) Severe, debilitating symptoms Sudden change in location of abdominal pain, increase in the frequency of symptoms, or onset of symptoms in patients >40 years of age Symptoms + significant abdominal discomfort or sudden change in bowel function Symptoms + severe persistent diarrhea or constipation, GI bleeding, fatigue, unintentional weight loss, or frequent nocturnal symptoms
153
glucocorticoids
Have metabolic activity Bind to specific intracellular cytoplasmic receptors in target tissues which are widely distributed throughout the body Dexamethasone, prednisone, fluticasone, betamethasone, methylprednisolone, prednisolone, triamcinolone
154
mineralocorticoids
Have electrolyte regulating activity Receptors are confined mainly to excretory organs, such as kidney, colon, salivary glands and sweat glands Fludrocortisone, aldosterone
155
corticosteroid activity
Bind to receptor Receptors dimerize or pair up Receptor-hormone complex recruits coactivator (or corepressor) proteins Until translocates into nucleus Attaches to gene promoter elements Can serve as a transcription factor to turn genes on (when complexed with coactivators) or off (when complexes with corepressors) depending on tissue Because of this mechanism, some effects of corticosteroids take hours to days to occur
156
cortisol
Principle human glucocorticoid Peaks in AM then declines → secondary smaller peak in late afternoon (diurnal production) Stress and levels of circulating steroid influence secretion
157
glucocorticoid activity
Receptors are spread throughout the body Adverse effects can occur throughout the body Stimulate gluconeogenesis and catabolism of proteins Facilitate glucose production and breakdown of proteins into amino acids Physiologic effect Increase in liver glycogen levels Increase in fasting blood glucose levels Increase in urinary nitrogen output
158
activity of all glucocorticoids
Promote normal intermediary metabolism Increase resistance to stress Alter blood cell levels in plasma Possess anti-inflammatory action Affect other systems
159
use of glucocorticoids
Relief of inflammatory symptoms Treatment of asthma and allergies Acceleration of lung maturation Replacement therapy for primary adrenal insufficiency Replacement therapy for secondary or tertiary adrenal insufficiency Diagnosis of cushing syndrome Replacement therapy for congenital adrenal hyperplasia
160
topical corticosteroids
Minimally absorbed when applied to normal skin Long term occlusion with an impermeable film → enhances penetration Penetration caries based on region of the body Penetration increased several fold in inflame skin and in severe exfoliative diseases Comes in various different preparations which can alter potency Grade 1-7: super high potency to least potent Least potent: hydrocortisone base and hydrocortisone acetate Triamcinolone is commonly prescribe in the primary care setting Lowest potency hydrocortisone is available OTC
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adverse effects of topical corticosteroids
All absorbable formulation have a risk of suppressing the HPA axis Can lead to a severely impaired stress response Prolonged use in large quantities → iatrogenic cushing syndrome Local effects Atrophy of skin Hypopigmentation Corticoid rosacea Perioral dermatitis Steroid acne Hypertrichosis Increased intraocular pressure Allergic contact dermatitis
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glucocorticoid injections
Triamcinolone acetonide or kenalog IM or intra-articular use Indications Acute gout flare Inflammatory ot allergic condition Acute MS exacerbation Rheumatic condition Can also be used for intralesional injections into dermatoses
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corticosteroids in allergies
Beneficial in treatment of allergic rhinitis, drug, serum or transfusion reactions Fluticason is inhaled into the respiratory tract from an MDI for treatment of allergic rhinitis and asthma
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corticosteroids in asthma and COPD
ICS are recommended for daily use in all patients with asthma except those with intermittent asthma ICS are indicates for group E COPD patients on GOLD criteria Should be combined with LAMA and LABA Oral glucocorticoid therapy has shown benefit in treating COPD exacerbations
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corticosteroids in lung maturation
Fetal cortisol is a regulator of lung maturation Betamethasone or dexamethasone IM to mother within 48 hours prior to premature delivery → accelerate lung maturation in fetus to prevent respiratory distress syndrome
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corticosteroids for inflammation
Significantly reduces inflammation associated with RA Inflammatory skin conditions including redness, swelling, heat and tenderness Agents that are important for symptom control in Persistent asthma Exacerbation of asthma Exacerbations in IBD Intra Articular corticosteroids may be used for treatment of an osteoarthritis flare Corticosteroids are not curative in these disorders
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steroid burst
Short term of oral glucocorticoids lasting <2 weeks Used for asthma or COPD exacerbations, inflammatory pain
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mineralocorticoid use and activity
Help control fluid status and concentration of electrolytes, especially with sodium and potassium Increase rate of sodium, bicarbonate and water resorption Increase rate of potassium excretion Can help maintain normal sodium and potassium concentration in serum Aldosterone acts on mineralocorticoid receptors in the distal tubules and collecting ducts in the kidney, causing reabsorption of Na+, HCO3- and H2O. Aldosterone decreases reabsorption of K+, which, with H+, is lost in the urine. Enhancement of Na+ reabsorption by aldosterone also occurs in gastrointestinal mucosa and in sweat and salivary glands. Elevated aldosterone levels may cause alkalosis and hypokalemia, retention of sodium and water, and increased blood volume and blood pressure. Hyperaldosteronism is treated with spironolactone
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why is prednisone preferred in pregnancy?
Fetal liver cannot convert it to active compound → prednisolone, any prednisolone made by mother is converted back to prednisone by placenta enzyme
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adverse effects of corticosteroids
Osteoporosis is the MC adverse effect with long term use Glucocorticoids suppress intestinal calcium absorption, inhibit bone formation and decrease synthesis of sex hormones Patients should take vitamin D and calcium Bisphosphonates can be used to treat Can increase appetite → use in cancer patients (prednisone0 Hyperglycemia → DM Monitor blood glucose and adjust medication as needed Cushing like signs: Body fat redistribution, moon facies, hirsutism, increased appetite Cataract with long term use Topical therapy: Skin atrophy, Ecchymosis, Purple striae
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corticosteroid discontinuation
If the HPA axis is suppressed, sudden discontinuation can have serious consequences including death. Abrupt discontinuation of the corticosteroids àacute adrenal insufficiency that can be fatal Risk of acute adrenal insufficiency + possibility that corticosteroid withdrawal could exacerbate the disease à dose must be tapered SLOWLY according to individual tolerance. Patient must be monitored carefully.
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tapering does not need to be done when?
used for <3 weeks
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