Internal Medicine Pearls Flashcards
Loratadine
Claritin
Catapres
Clonidine
What is the mechanism of clonidine
Stimulates alpha 2 adrenergic receptors
Central acting anti hypertensive
What is the most common cause of HTN in a young healthy non smoker?
Fibromuscular dysplasia
What is the most likely cause of HTN in a diabetic obese male with hyperlipemia?
Atherosclerosis
What treatment options are available for widely resistant bacterial infections
Consider using an older antibiotic like colistin that is no longer tested for resistance.
How does sepsis effect lactic acidosis
Sepsis increases the risk of lactic acidosis
How should metformin be adjusted for in patient hospital stay
It should be stopped to prevent lactic acidosis
How should a patient be managed for in patient alcohol detox
Fixed dose step down of Librium (longer hospital stay)
Referral to psych
For younger patients use 10 mg baclofen TID and Ativan PRN
Severity of symptoms is increased over the age of 45
What is the problem with using antipsychotics with anti-arrhythmics
Severe QT prolongation
Sedation with Benzos may be the only option for treating delirium in a patient on a phase III anti arrhythmic.
What is the mechanism of rabeprazole
Inhibits the hydrogen potassium ATPase of gastric parietal cells
Name the 1st generation cephalosporins
Cefazolin
Cephalexin
Name the third generation cephalosporins
Ceftibuten Cefdinir Cefotaximine Ceftriaxone Cefixime
Name the 4th generation cephalosporins
Cefepime
Name the fifth generation cephalosporins
Cetaroline
What is the community service board
Psychiatry evaluation that determines if the patient is unsafe for themself and the need for care. The referral does not require patient consents
What is a cosyntropin stimulation test
Baseline ACTH drawn.
30 minutes after cosyntropin IV injection of 1 µg cosyntropin draw blood for ACTH
60 minutes after 1 µg bolus cosyntropin injection draw blood for ACTH
What labs are a good indicator of gallstones and pancreatitis
AST three times of baseline
What are the common bugs the cause community acquired pneumonia
Typical’s: strep pneumonia H. influenzae
Atypicals: Legionella, chlamydia, Mycoplasma
Special risk factors: alcoholics, aspiration
What are the two treatment options for community acquired pneumonia
- Fluoroquinolone
2. Macrolide plus cephalosporin third-generation
What are the respiratory fluoroquinolones
- Levofloxacin.
2. Avelox.
The patient is taking Lasix how do you check the kidney function
Do not get the FeNa with Lasix you will need to get the FeUria
How’s the CNS Penetration of Zosyn
Poor
What is Todd’s paralysis
Postictal states in which lethargy and confusion can remain for sometime. Maybe accompanied by focal neurologic deficits
Byetta
Exenatide
What is the mechanism of exenatide
Activates the GLP-1 receptor
When will serum urate become supersaturated
6.8
What serum level of urate should be treated to
Always treat below 6.0. If tophi are present treat to below 5.0
What items will induce a gout flair up
-Red meat, Beer, Shellfish, yeast, low dose ASA, Chemo, diuretics, ETOH, nicotine Aid
Are most gout patients over Producers or under excretor’s
90% are Under excretor’s
Less than 800 mg in 24 hours
How is gout managed
Managing flareups (Steroids, NSAIDs, colchicine)
Using urate lowering therapy
What options are available for urate lowering therapy
Uricosurics such as probenecid
Xanthine oxidase inhibitors such as allopurinol, Oxipurinol, or feboxustat
What is incentive spirometery
The program was intensive and involved breathing exercises, incentive spirometry, and education in active breathing and forced expiration techniques. Postoperative pulmonary complication rates for experimental and control groups were 18 and 35 percent, respectively, OR 0.52 [95% CI 0.30-0.92]. Median length of stay was one day shorter for the group receiving inspiratory muscle training.
What are the major causes of post operative fever
The five W’s
- wind (atalectasis)
- water (UTI)
- wound (infection)
- walking (DVT’s)
- Wonder drug
Semethicone
Gas X
What are the major causes of cellulitis
Strep pyogenes (GAS) Staph aureus
What is the difference between erysipelas and cellulitis
Cellulitis is a deeper
Erysipelas is superficial, more demarcated border.
Is erysipelas more often strep or staph infection
More commonly strep. But could be either
Is cellulitis more commonly staph or strep
More commonly staph but could be either.
Staph is often associated with abscesses and a more purulent discharge.
What treatment options are available treatment of cellulitis
Clindamycin
Bactrum plus amoxicillin
Less coverage of gram positive but still effective:
Doxycycline
What is a major complication of clindamycin
C. Diff associated diarrhea
Discuss necrotizing fasciitis
- Rapid progressing.
- Pockets of abscess.
- Be sure to draw lines surrounding the border.
- Ensure frequent short duration follow-up.
- Patient presents with disproportionate pain
What are the causes of necrotizing fasciitis
Clostridium
GAS
Poly microbial including anaerobes
What is Ranson scoring
A score based upon Ranson’s criteria is one of the earliest scoring systems for severity in Acute Pancreatitis.
Ranson’s criteria consist of 11 parameters. Five of the factors are assessed at admission and six are assessed during the next 48 hours
Mortality increases with an increasing score. Using the 11 component score, mortality was 0 to 3 percent when the score was <3,
11 to 15 percent when the score was ≥3,
40 percent when the score was ≥6
What are the components of Ranson scoring
At admission: Age in years > 55 years White blood cell count > 16000 cells/mm3 Blood glucose > 10 mmol/L (> 200 mg/dL) Serum AST > 250 IU/L Serum LDH > 350 IU/L
Within 48 hours:
Calcium (serum calcium < 2.0 mmol/L (< 8.0 mg/dL)
Hematocrit fall > 10%
Oxygen (hypoxemia PO2 < 60 mmHg)
BUN increased by 1.8 or more mmol/L (5 or more mg/dL) after IV fluid hydration
Base deficit (negative base excess) > 4 mEq/L
Sequestration of fluids > 6 L
The criteria for point assignment is that a certain breakpoint be met at anytime during that 48 hour period, so that in some situations it can be calculated shortly after admission. It is applicable to non-gallstone pancreatitis.
What is tachy - Brady syndrome
Also known as sick sinus syndrome
an umbrella term for a group of abnormal heart rhythms (arrhythmias) presumably caused by a malfunction of the sinus node, the heart’s primary pacemaker. Bradycardia-tachycardia syndrome is a variant of sick sinus syndrome in which slow arrhythmias and fast arrhythmias alternate.
What are common etiologies to prerenal AKI
Hypovolemia (dehydration)
Decrease contractility
Systemic vasodilation (sepsis)
Renal vasoconstriction (NSAIDs, ACE/ARBs)
How can the determination of prerenal AKI be made?
FE(Na) < 1%
BUN/CR > 20
Uosm > 500
How can the determination of prerenal AKI be made if a patient is on lasics
FE(un) < 35%
FE(un)= [U(un)/P(un)] / [U(cr)/P(cr)]
What is the formula for FE(Na)
FE(Na)= [U(Na)/P(Na)] / [U(cr)/P(cr)]
How does PTH related chronic kidney disease
The greater the target range of PTH equals a more severe stage chronic kidney disease
Stage III as target PTH of 35 to 70
Stage IV has target PTH of 70 to 110
Stage V has target PTH 150 to 300
What are the key ingredients in a lactated ringer
130 mEq of Na ion = 130 mmol/L 109 mEq of Cl ion = 109 mmol/L 28 mEq of lactate = 28 mmol/L 4 mEq of K ion = 4 mmol/L 3 mEq of Ca ion = 1.5 mmol/L
Lactated Ringers has an osmolarity of 273 mOsm/L. The lactate is metabolized into bicarbonate by the liver, which can help correct metabolic acidosis.
What are the SIRS criteria
Temp: > 38 °C or < 36
Heart rate: >90/min
RR >20/min or PaCO2 12,000 or 10% bands
What is leukocytosis
Leukocytosis is a white blood cell count (the leukocyte count) above the normal range in the blood. It is frequently a sign of an inflammatory response, most commonly the result of infection, and is observed in certain parasitic infections. It may also occur after strenuous exercise, convulsions such as epilepsy, emotional stress, pregnancy and labour, anesthesia, and epinephrine administration
What are the classifications of leukocytosis
There are five principal types of leukocytosis: Neutrophilia (the most common form) Lymphocytosis Monocytosis Eosinophilia Basophilia
What is the band cell
A band cell (also called band neutrophil or stab cell) is a cell undergoing granulopoiesis, derived from a metamyelocyte, and leading to a mature granulocyte.
It is characterized by having a nucleus which is curved, but not lobar.
The term “band cell” implies a granulocytic lineage (neutrophil)
What is tacrolimus indicated
To induce immune suppression for transplants rejection therapy
What is the only fluoroquinolone that has anaerobic coverage
Avelox (moxifloxacin)
What is the normal levels of lactate
0.5 to 2.2
At what level of Lactate should sepsis be a concern
Lactate greater than 4.0 consider septic shock until proven otherwise
What bacterial infections is clindamycin used to treat
Aerobic Gram-positive cocci, including some members of the Staphylococcus and Streptococcus (e.g. pneumococcus) genera, but not enterococci.[13]
Anaerobic, Gram-negative rod-shaped bacteria, including some Bacteroides, Fusobacterium, and Prevotella, although resistance is increasing in Bacteroides fragilis.
Most aerobic Gram-negative bacteria (such as Pseudomonas, Legionella, Haemophilus influenzae and Moraxella) are resistant to clindamycin,[13][14] as are the facultative anaerobic Enterobacteriaceae.[15] A notable exception is Capnocytophaga canimorsus, for which clindamycin is a first-line drug of choice.[16]
What is the function of the AST / ALT ratio
When greater than 2.0, it is more likely to be associated with viral hepatitis, alcoholic hepatitis[4] or hepatocellular carcinoma
When greater than 1.0 but less than 2.0, it is likely to be associated with cirrhosis
It is normally less than 1.0
However, the AST/ALT ratio is less useful in scenarios where the liver enzymes are not elevated, or where multiple conditions co-exist.
Is a ALT or AST a better indicator of inflammation
ALT is a more specific indicator of liver inflammation than AST, as AST may be elevated also in diseases affecting other organs, such as myocardial infarction, acute pancreatitis, acute hemolytic anemia, severe burns, acute renal disease, musculoskeletal diseases, and trauma
What is the clinical significance of an elevated ALT
Significantly elevated levels of ALT(SGPT) often suggest the existence of other medical problems such as viral hepatitis, diabetes, congestive heart failure, liver damage, bile duct problems, infectious mononucleosis, or myopathy.
For this reason, ALT is commonly used as a way of screening for liver problems. Elevated ALT may also be caused by dietary choline deficiency. However, elevated levels of ALT do not automatically mean that medical problems exist.
Fluctuation of ALT levels is normal over the course of the day, and ALT levels can also increase in response to strenuous physical exercise
What pathologies will cause an increase and ALK PHOS
The normal range is 20 to 140 IU/L.
High ALP levels can show that the bile ducts are blocked.
Levels are significantly higher in children and pregnant women.
Also, elevated ALP indicates that there could be active bone formation occurring as ALP is a byproduct of osteoblast activity (such as the case in Paget’s disease of bone).
Levels are also elevated in people with untreated Celiac Disease.
Lowered levels of ALP are less common than elevated levels.
What are the pathologies that will cause hyperbillirubinemia?
- Mild rises in bilirubin may be caused by:
- Hemolysis or increased breakdown of red blood cells
- Gilbert’s syndrome – a genetic disorder of bilirubin metabolism that can result in mild jaundice, found in about 5% of the population
- Rotor syndrome: non-itching jaundice, with rise of bilirubin in the patient’s serum, mainly of the conjugated type. - Moderate rise in bilirubin may be caused by:
- Pharmaceutical drugs (especially antipsychotic, some sex hormones, and a wide range of other drugs)
- Sulfonamides are contraindicated in infants less than 2 months old (exception when used with pyrimethamine in treating toxoplasmosis) as they increase unconjugated bilirubin leading to kernicterus.[14]
- Hepatitis (levels may be moderate or high)
- Chemotherapy
- Biliary stricture (benign or malignant) - Very high levels of bilirubin may be caused by:
- Neonatal hyperbilirubinaemia, where the newborn’s liver is not able to properly process the bilirubin causing jaundice
- Unusually large bile duct obstruction, e.g. stone in common bile duct, tumour obstructing common bile duct etc.
- Severe liver failure with cirrhosis (e.g. primary biliary cirrhosis)
- Crigler–Najjar syndrome
- Dubin–Johnson syndrome
- Choledocholithiasis (chronic or acute).
How can volume depletion be determined
- urine Na concentration remains below 15 meq/L
2. Elevated specific gravity
What is S1Q3T3
EKG interpretation that shows an S wave in I a Q wave and inverted T wave in lead III. It is the classical sign of a PE
What is the wells score
Calculation used to determine the risk of Pulmonary embolism. Criteria include:
- Symptoms of DVT (3)
- No alternative dx (3)
- tachycardia > 100 (1.5)
- immobilizations or surgery (within 4 weeks) (1.5)
- Hx of DVT (1.5)
- hemoptysis (1)
- malignancy (1)
Score greater than 6 is high probability
Score less than 2 is low probability.
Colace
docusate sodium
What is the mechanism of docusate sodium
stool softner.
Facilitates mixture of stool fat and water
Senna soft
Sennosides
What is the mechanism of sennosides
increases peristalsis (Stimulant laxative)
What are the 3 mechanism in which T-bili can be elevated
increased production (hemolysis), intrahepatic causes (toxins, injury, gilberts), posthepatic causes (obstruction/gall stones)
What are the major risk factors for NASH (non alcoholic steatohepatitis)
obesity
DM
hyperlipidemia
macule
A flat, generally less than 0.5 cm in diameter area of skin or mucous membranes with different color than surrounding tissue. Color may be tan, brown, blue, red, or hypopigmented; macules may have nonpalpable, fine scale.
patch
A flat, generally greater than 0.5cm in diameter area of skin or mucous membrane with different color than surrounding tissue. Color may be tan, brown, blue, red or hypopigmented; patches may have nonpalpable, fine scale.
Papule
Discrete, solid, elevated bodies, usually less than 0.5cm in diameter. Papules are further classified by shape, size, color and surface characteristics.
plaques
Discrete, solid, elevated bodies, broader than they are thick, measuring more than 0.5cm in diameter. Plaques may be further classified by shape, size, color and surface characteristics.
nodules
Dermal or subdermal lesions that are firm, well-defined, and usually greater than 0.5cm in diameter. Cysts are fluid-filled nodules. Large nodules are called tumors.
pustules
Circumscribed elevations that contain pus. Pustules are usually less than 0.5cm in diameter.
vesicles
Fluid-filled cavities that are less than 0.5cm in diameter. Vesicles may be filled with fluid that is clear, serous, hemorrhagic or purulent.
bullae
Fluid-filled blisters greater than 0.5cm in diameter. Bullae can be filled with fluid that is clear, serous, hemorrhagic or purulent.
What is Inducible clinicamycin resistance
MRSA can develop resistance rapidly to single antibiotic treatment
How long should septic arthritis be treated
Four weeks IV antibiotics
How long should a septic bursitis be treated
Three weeks oral antibiotics
How does treatment of staph aureus cellulitis differ from strep cellulitis
Staff aureus requires two weeks IV vancomycin because staph aureus can seed other areas
The patient presents with coma, what are the medical treatments to counteract the coma.
Glucose (diabetes)
Thiamine (wernickes)
Flumazenil (Benzos)
Narcan (opiod antagonist)
What is the mechanism of benzonate
Anesthetizes respiratory passage, lung and pleural stretch receptors, reducing cough reflex
What are delirium tremens
Delirium tremens (DT) is defined by hallucinations, disorientation, tachycardia, hypertension, fever, agitation, and diaphoresis in the setting of acute reduction or abstinence from alcohol. In the absence of complications, symptoms of DT can persist for up to seven days