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diagnosis infectiousdiseases bloodcultures cardiology differential endocarditis interpretation laboratory peritonitis acquired aeromonas associated bacterial bloodculture capd community contaminants ddx id infections
Blood culture contaminants Grouped by gram negative vs gram positive vs other as well as never/maybe/probably Some additional
Blood culture contaminants ... Grouped by gram negative ... #Infections #Microbiology ... #Micro #Differential ... #bcx #contaminant
How to Determine a Contaminant vs True Infection What is the organism? Most common contaminants:
• Coagulase-negative ... ) How many blood ... culture sets are ... #Contamination ... #Diagnosis #BCx
Guide to Interpretation of Positive Blood Cultures I arrange the potential Gram stain results that one can
Interpretation of Positive Blood ... call from the micro ... BloodCultures #BCx ... #Contamination ... Interpretation #Laboratory #Microbiology
Streptocccus Pneumoniae Microbiology: Gram Positive, Alpha-hemolytic, Catalase Negative Epidemiology - 10% adult carriers: • Most common cause of:
Alpha-hemolytic, Catalase Negative ... common cause of: CAP ... sinus • Sputum culture ... Specificity of 97%) Treatment ... #diagnosis #management
CAPD-associated peritonitis (Continuous Ambulatory Peritoneal Dialysis) - 5 Things To Know Diagnosis (Two of the following): (1) Clinical
CAPD-associated ... Positive effluent culture ... Microbiology: • ... diverticulitis) Treatment ... peritonitis #Diagnosis #Management
Community Acquired Pneumonia (CAP) - Diagnosis and Management Pneumonia Signs/Symptoms: • Confusion/disorientation (LR + 1.9) • Cough
Diagnosis and Management ... : - Blood cultures ... CX is low ranging ... screening: High negative ... #treatment #Pulmonary
Endocarditis Summary Who? Infectious: • Pre-existing valvular disease • Prosthetic valve • Congenital heart disease • IV substance use • IV catheter • Recent
Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... • Coagulase-negative ... • Blood cultures ... Endocarditis #diagnosis #management
Spontaneous Bacterial Peritonitis DIAGNOSTICS Paracentesis: • Calculate absolute PMN count (total WBC x PMN %) • Correct
ascitic fluid in blood ... dL, LDH > ULN Culture-negative ... Otherwise repeat tap ... SBP #diagnosis #management ... #prophylaxis #treatment
Endocarditis - Overview and Differential Diagnosis Framework Who? Infectious: • Pre-existing valvular disease • Prosthetic valve • Congenital heart disease • IV
Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... Negative: • Bartonella ... Diagnosis: • Blood ... hematuria, + RF Treatment
Aeromonas spp - Diagnosis and Management Summary Aeromonas spp: Gram-negative Rods, oxidase positive and glucose fermenter. Virulence: Toxin
Diagnosis and Management ... Aeromonas spp: Gram-negative ... Identified in wound or blood ... cultures Treatment ... #microbiology #
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