433 results
Negative Contrast Effect in Right Atrium - Differential Diagnosis
1. Small secundum ASD or PFO with left
Negative Contrast ... Small secundum ASD ... DrAkramNeyaz #Negative
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
FP + TN) = true negatives ... all positives Negative ... FN + TN) = true negatives ... / all negatives ... Specificity) Negative
Microorganisms Responsible for Infective Endocarditis

Native valves:
 - Streptococcus viridans 
 - Enterococci 
 - Other streptococci
Endocarditis Native ... epidermidis - Gram-negative ... ) - Culture negative ... Enterococci - Gram-negative ... streptococci - Culture negative
Endocarditis Algorithm - Infective vs Noninfective Causes
Noninfective:
 • Malignancy
 • Autoimmune disease
 • Systemic infection
Native Valve
Systemic infection Native ... Staphylococcus lugdunensis Native ... HACEK • Culture-negative ... epidermidis • Gram-negative ... Enterococcus • Gram-negative
Characteristics of Selected Pneumonias

Streptococcus pneumoniae (pneumococcus). Gram-positive diplococci. 
Haemophilus influenzae. Pleomorphic gram-negative coccobacilli. 
Staphylococcus aureus. Plump
Pleomorphic gram-negative ... Plump gram-negative ... Gram-negative rods ... Gram-negative rods ... Gram-negative diplococci
Microbiology Antibiogram - Antibiotic Sensitivities
Gram Positive Cocci
Gram Negative Bacilli
Gram Negative Coccobacilli
Anaerobes
Atypicals

#Antibiogram #Antibiotic #Sensitivity #Susceptibility #table #pharmacology
Positive Cocci Gram Negative ... Bacilli Gram Negative
Positive and Negative Likelihood Ratios Calculations
#Diagnosis #Likelihood #Ratios #LR #Calculations #Equations #Positive #Negative
Positive and Negative ... Equations #Positive #Negative
Gram Negative Bacteria - Identification Algorithm
- Rods (Bacilli)
- Cocci (Diplococci)
- Coccobacilli
- HACEK Group

By Dr. Colleen S.
Gram Negative Bacteria ... Emory_MedMicro #Gram #Negative
Carbapenems - Antibiotics Class Overview

Imipenem/Cilastin, Meropenem, Ertapenem, Doripenem 

Spectrum: Broadest spectrum antibiotics, cover Gram positive, Gram
positive, Gram negative ... resistant gram negatives
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
100%, then all negative ... disease who test negative ... proportion of negative ... that are true negatives ... , -1 = perfect negative