Exam 4: Endocrine, Neuro, and Emergencies Flashcards
Leading cause of CVD, renal failure, blindness, nontraumatic lower limb emputation
DM
Screening for DM
Begin at 45
FPG, 2 hour glucose tolerance, A1C
Assessment every 3 months in dm
Fundoscopic exam, oral cavity exam, thyroid, heart, skin, feet
Dx for DM
Random plasma glucose >200
FPG >126
A1C >6.5
Step 1 DM management
A1C >7
Lifestyle management + begin metformin
Metformin
LIVER: Suppresses hepatic glucose production
SE: GI, no hypoglycemia
CI in Cr >1.4
Glipizide
PANCREAS: stimulates insulin secretion
SE: weight gain, hypoglycemia
Acarbose
SMALL INTESTINE: Delays digestion
CI: IBD, colonic ulcer, gastroperesis, Cr >2
SE: gas
Pioglitazone
MUSCLE: improve insulin sensitivity
SE: weight gain, edema
CI: HF
Dulaglutide
GLP1 agonist
INJECTABLE
Stimulates insulin secretion in fed state, suppresses glucagon, slows gastric emptying
Canagliflozin
SLG2 inhibitors
Increased glucose secretion in urine
SE: UTI, genital infections
Microvascular complications of DM
Diabetic retinopathy, nephropathy, neuropathy
Earliest indication of renal damage from DM
Microalbuminuria–test annually
If confirmed, tx with ACEI
Topical tx for diabetic neuropathy
Capsaicin cream or lidocaine patch
Acanthosis nigricans common in
metabolic syndrome
Antihypertensives effective in reducing BP and increasing insulin sensitivity
Alpha blockers and ACEI
Most sensitive indicator of overall thyroid function
TSH
Imaging to evaluate anatomy of thyroid gland
ultrasound
Most common cause of goiter in developed country
chronic autoimmune thyroiditis
Leads to increased TSH
Complications of thyroid surgery
Hypoparathyroidism
Hoarseness
Education after radioiodine treatment for thyroid nodules/cancer
No kissing or exchanging saliva for 5 days, no close contact with infants or pregnant women for 5 days, no breastfeeding, flush toilets twice after urinating, take tylenol for sore throat
Most common cause of hyperthyroidism
Graves disease
Baseline ____ before methimazole/PTU
LFT and CBC
SE of methimazole/PTU
Rash, jaundice, arthralgias
Effects of hypothyroidism on body
Impaired myocardial contractility, impaired lipid metabolism, hypertension, fatigue, weight gain, reduced GFR, constipation
Most common progressive motor neuron disease
ALS
ALS
Dysfunction of both upper motor neurons and lower motor neurons
Asymmetric weakness evident in the limbs first, usually arms
Foot drop, difficulty walking, weakness lifting arm
Bowel and bladder function spared
Bells palsy
Acute, UNILATERAL weakness or paralysis of CN7, onset <72 hours
Self-limiting
Usually caused by triggering event–URI or ischemia to the nerve
Bells palsy incidence highest in
pregnancy, first week postpartum, women with pre-eclampsia
PE of bells palsy
Smooth forehead, widened palpebral fissure, inability to close eye, flattened nasolabrial fold, asymmetric smile
Ask to smile, show teeth, puff out cheeks, raise eyebrows, close eyes tightly
Tx of bells palsy
STEROIDS within 72 hours of onset (prednisone)
May add antivirols
Lubricate and protect eye
Lacunar strokes
Seen more in elderly and diabetics
Affects small arterioles
Abrupt onset of severe headache
Subarachnoid hemorrhage stroke
Most common initial procedure to discriminate between strokes
CT
Most important independent and modifiable risk factor for stroke
Hypertension
Early AD signs
Short term memory loss with anxiety and depression
Middle AD signs
Worsening of memory and language and judgement, disorientation to time and place, paranoia, hallucinations, delusions, UI
Late AD signs
Motor rigidity, prominent neuro abnormalities including apraxia and agnosia, severe language and cognitive impairment
Baseline brain imaging study for dementia
Non contrast CT
2 classes of drugs for AD
Cholinesterase inhibitors
NMDA antagonists
Cholinesterase inhibitors
Donepezil, rivastigmine, galantamine
NMDA antagonists
Memantine
Peripheral causes of vertigo
BPPV, Vestibular neuritis, acute labyrinthitis, meniere disease, ototoxicity, head trauma
Central causes of vertigo
Brainstem or cerebellar ischemia or hemorrhage, tumors, MS, Migraine syndrome
Cardiac conditions associated with syncope
Arrhythmias, sick sinus syndrome, MVP, AS, heart block
Pre-syncope causes
Dehydration, hypotension, cough
Hallpike-Dix maneuver
Check for spontaneous nystagmus while sitting on exam table, put patient in recumbent position and observe for nystagmus with head tilting to each side
2 most common cause of BPPV
Head trauma and prior viral inner ear infection
First line tx of BPPV
Canalith repositioning procedure
Headaches due to
Serotonin, dopamine, substance P, calcitonin
Limit headache abortive agents to
<2 days per week to avoid rebound headache
First line for headaches
tylenol, aspirin, nsaids
When to use preventative medications for headaches
> 4/month
First line preventative meds for cluster headaches
Verapamil and lithium
Encephalitis primarily due to
Herpes, arbovirus, enterovirus
Most common cause of bacterial meningitis for children <1 month
GBS and E Coli
Most common cause of meningitis for elderly
Strep pneumoniae
Tx of meningitis
Vanco + ceftriaxone
Most common hypokinetic movement disorder
Parkinson disease
Tx of essential tremor
Beta blockers, anticonvlsants, benzos
Cardinal symptoms of PD
Resting tremor, bradykinesia, rigidity, postural instability
PD due to
Depletion of dopamine
Tx of PD
Levodopa
Selegiline
Trihecyphenidyl + Benzotropine (for tremor primarily)
Amantadine (mild)
Simple partial seizure
No loss of consciousness
Tx of SE
Lorazepam or diazepam
1st line tx of seizures
Levetiracetam–Keppra
Does not cause sedation, does not induce liver enzymes, acceptable in pregnancy
Women and AED
Should be given a higher dose of OCP (estrogen >50) and give 1g folic acid/day to decrease birth defects
Pre-diabetes labs
FPG 100-125
A1C 5.7-6.4
2 hour plasma glucose 140-199
A1C can not be used for diagnosis in
Pregnancy, hemoglobinopathy, abnormal erythrocyte turnover
Subsequent testing for DM
Repeat A1C, fasting lipids, UA, microalbuminuria, thyroid, serum Cr
C peptide level for DM
<0.5 indicates type 1 DM
Meds that can cause hyperglycemia
Steroids, hormonal therapy, immunosuppressants, nicotinic acid, protease inhibitors, atypical antipsychotics, diuretics
Do not use metformin if
Cr >1.4
Liver impairment or alcoholic patients
Do not use TZD in
HF
Liver disease
Exanatide
Enhances glucose dependent insulin secretion
And slows gastric emptying
SC
A1C should be repeated
at least 2 times per year in patients with good control
Quarterly in patients who are not meeting goals
Fasting hypoglycemia
Low sugar levels >5 hours after eating
BG does not return to normal without glucose ingestion or administration
Reactive hypoglycemia
Acute
Symptoms 2-4 hours following a meal reach in carbs
Causes: GI surgery, congenital deficiency of carb enzymes, late insulin release, extreme exertion, sepsis or HF, sulfonylureas
Induced hypoglycemia
Most common
Meds and alcohol most common causes
Most reliable method of diagnosing hypoglycemia
plasma glucose 72 hour fast
Leading complication of hospitalization for older adults
Delirium
If altered mental status in elderly check for
UTI or pneumonia first
First clinical episode of MS
Usually focal neurologic deficit such as eye pain or visual disturbance
Dx MS
o Events must be at least 2 distinct episodes lasting more than 24 hours occurring at least 30 days apart and there must be evidence of at least 2 different locations
Tx of MS exacerbation
High dose IV steroids
Pregnancy effect on MS
Neuroprotective
Decision for high intensity statin
> 20% risk
Digoxin blocks conduction at
AV node
Goal of A Fib
Ventricular rate control
Prevent rapid ventricular response
Normal TSH range
0.35-5.5
Amiodarone can cause
Hyperthyroidism and pulmonary fibrosis
Tx of vertigo
antihistamine (meclizine), diamox, antiemetics
Pt with PD subjectively complains of
Fatigue
What can affect levodopa
Antacids and vitamins
Abortive therapy for migraine
Triptans
Fiorecet 2-3 days
Tx of encephalitis
Antiviral + seizure control with dilantin
Tx of herpes zoster
Acyclovir
Capsaicin cream, amitriptyline or neurontin
Sometimes can add narcotics
Trigeminal neuralgia higher risk if
hypertension, MS
Anaphylaxis reaction
rapid release of immunoglobulin E
Immune hypersensitivity reaction–activation of mast cells and basophils
Number one cause of TBI in children <14 and adults >65
falls
Talk and deteriorate syndrome
utter recognizable words after head injury and then deteriorate to severe brain injured conditions within 48 hours
Normal GCS
15
Brain dead GCS
3
first sign of brain injury in older adults
confusion or change in behavior
What meds should not be taken for 1 week following brain injury
narcotics, aspirin, alcohol
Heat stroke
Core body temp >104, CNS abnormalities
Red, hot, dry skin
Tachycardia, hypotension
Heat exhaustion
Less severe; due to excess sweating
Fatigue, sweating, nausea, diarrhea, hypotension
No CNS involvement
SKin pale and flushed
Complications related to heat stroke
Rhabdomyolysis, renal/hepatic/cardiac failure
At risk population for heat stroke
Elderly, people who take beta blockers or diuretics or anticholinergics
Most common cause of burns
radiation
1st degree burn
superficial
no blisters or vesicles
blanches with pressure
Cool compress, aloe vera, ibuprofen
2nd degree burn
superficial partial-thickness
epidermal and upper layer of dermis
Vesicles and blisters
Tx: silvadene, neosporin, bacitracin
3rd degree
full thickness
All nerves destroyed
No pain
skin grafting required