10/14/21 bonus Flashcards
Sensitivity (true positive rate) equation
= TP / (TP + FN)
\+ - ---------------- \+ | TP | FP ---------------- - | FN | TN
As the incidence of a disease increases, will positive predictive value increase or decrease?
Increase.
Functional neurological symptom disorder
- characterized by an unexplained symptom (i.e. blindness, paralysis, mutism)
- triggered by a psychological stressor.
- medical work-up will be normal
Which type of hypersensitivity reaction results from IgG and IgM interacting with cell-surface antigens causing complement activation and phagocytosis?
Type II, cytotoxic, for example autoimmune hemolytic anemia, erythroblastalis fetalis, and Goodpasture syndrome.
For compartment syndrome, How is the delta pressure calculated?
The delta pressure is the diastolic pressure minus the compartment pressure. A delta pressure ≤ 30 is considered abnormal and is an indication for fasciotomy.
As seen in stroke, cerebellar lesions cause ipsilateral ataxia, whereas lesions of the vermis result in ___________.
truncal ataxia
Other than hyperthermia, what is the major clinical feature of heat stroke?
Altered mental status.
What is the most common nerve injury associated with anterior shoulder reduction?
Axillary nerve injury
Direct vs indirect coombs test
The direct Coombs test is used to detect antibodies that are stuck to the surface of red blood cells.
The indirect Coombs test looks for antibodies that are floating in the blood.
Positive PPD criteria
15 mm: no ↑ risk
10 mm: people who are high risk, health care workers, without housing, intravenous drug users, or born outside the U.S.
5 mm: immunosuppressed, recent TB contact, abnormal CXR, steroid use
Positive PPD criteria
15 mm: no ↑ risk
10 mm: people who are high risk, health care workers, without housing, intravenous drug users, or born outside the U.S.
5 mm: immunosuppressed, recent TB contact, abnormal CXR, steroid use
Thoracotomy indications after chest tube placement for hemothorax
-initial output of > 20 mL/kg or 1,500 mL
or
-subsequent output of > 200 mL/hour
Neonatal Sepsis Abx
-Ampicillin
plus
-Cefotaxime or Gentamicin
acyclovir can added be added
In what anatomic location do you inject anesthetic to perform an inferior alveolar nerve block?
The intraoral coronoid notch.
Le Fort Fracture
I: transverse fracture separating maxilla from pterygoid and nasal septum
II: maxilla and palate fractured
III: craniofacial dissociation
