Causes of Petechial Rash - Differential Diagnosis Algorithm Pinpoint areas (less than 2 mm) of hemorrhage, which are reddish-purple lesions called petechiae. Petechiae Etiology: • Abnormalities in primary or secondary hemostasis: - Thrombocytopenia - Abnormal platelet function - Clotting factor deficiency - Abnormal clotting factor function • Disruptions in vascular integrity: - Trauma - Infection - Vasculitis - Collagen disorders Petechiae Red Flags: • Fever • Toxic appearance • Hypotension • Mucosal lesions • Severe pain • Extremes of age • Immunosuppressed • New medication Febrile, Toxic Patient: • Palpable Rash: - Meningococcemia - Disseminated gonococcal infection - RMSF - Henoch Schonlein Purpura - Endocarditis • Non-Palpable Rash: - Purpura fulminans - DIC - TTP Afebrile, Nontoxic Patient: • Palpable Rash: - Autoimmune Vasculitis (lupus, RA, Sjogren's, GPA, EGPA, Microscopic) - Viral (echovirus, coxsackie, measles, Parvovirus) • Non-Palpable Rash: - ITP - APLS - HIT - ITP - Cholesterol embolism - Amyloidosis - Nutritional deficiency Work Up: • Complete blood count coagulation studies • Urinalysis • Fecal occult blood test • Serology for hepatitis B and C • Serum protein electrophoresis, anti-streptolysin O titre • Measurement of antinuclear antibodies, antineutrophil cytoplasmic antibodies, rheumatoid factor • Serum immunoglobulins & cryoglobulins • Skin biopsy • Abdominal ultrasound #Petechial #Petechiae #Rash #Differential #Diagnosis #Algorithm #Causes #dermatology #physicalexam

Diagnosis and Management of Hypernatremia #Hypernatremia #Differential #Algorithm #Causes #Nephrology #Diagnosis ** GrepMed Recommended Text: Nephrology Secrets - https://amzn.to/2Z74DhY

Algorithm for the management of atrial fibrillation with rapid ventricular response - Dr. Tom Fadial @thame #Atrial #fibrillation #AFib #RVR #Algorithm #management #Rapid #Emergency #Cardiology

VT versus SVT with Aberration - Interpretation Cheat Sheet Features favouring VT ● Absence of typical RBBB or LBBB morphology ● AV dissociation (P and QRS complexes occur independantly of each other) ● Presence of captured beats (normal sinus beat that is captured between a VT run) and fusion beats (hybrid complex of normal sinus beat and a ventricular beat colision) ● Positive or negative concordance in all precordial leads, i.e. leads V1-6 show entirely positive (R) or entirely negative (QS) complexes. Brugada algorithm 1. Positive or negative concordance 2. Onset of R to nadir (lowest point) of S > 100 ms in any V lead 3. AV dissociation 4. Morphology criteria: both V1,V6 suggest VT Usama Nasir MD @usamanasirmd - Visualmed #VT #VTach #VentricularTachycardia #SVT #Aberration #Aberrancy #Comparison #Diagnosis #Cardiology

AACE/ACE 2018 Glycemic Control Algorithm #AACE #2018 #Glycemic #Diabetes #DM2 #Control #Medication #Algorithm #Endocrinology #PrimaryCare #Management