8 results
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
Approach to Hypomagnesemia ... intake, Gl loss, shift ... #algorithm #differential ... #diagnosis #causes ... nephrology #magnesium #low
Hypokalemia Differential Diagnosis Algorithm

Low intake 
• poor oral intake 

Renal loss 
• Medication 
• Hypomagnesemia 
•
Differential Diagnosis Algorithm ... Low intake ... Medication • Hypomagnesemia ... Transcellular shift ... #Causes #Classification
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
Hypomagnesemia - ... Differential #Diagnosis #Low ... #Magnesium #Table ... Classification #Causes ... #Workup #hypomg
Hypophosphatemia - Differential Diagnosis Algorithm

Transcellular Shift
 • Recovery From DKA
 • Refeeding Syndrome
 • Acute Respiratory
Transcellular Shift ... Hypokalemia • Hypomagnesemia ... Increased Excretion - Renal ... #endocrinology ... #causes
Adrenal Insufficiency Diagnosis Algorithm - Evaluation of HPA Axis Response to ACTH

Early am cortisol < 3
Diagnosis Algorithm ... - Evaluation of ... unclear (often the case ... primary AI - Low ... Stimulation #Test #Endocrinology
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
aldosterone - Low ... in cases in which ... Insufficiency #Evaluation ... diagnosis #testing #endocrinology ... #workup
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
TTP - Laboratory Evaluation ... If the value is low ... leukocytosis with a left shift ... the presence of renal ... ThromboticThrombocytopenicPurpura #Diagnosis #Workup
Causes of Secondary Hypertension - Workup and Differential Diagnosis
Approach (when evaluation should be done):
1. Severe or
Hypertension - Workup ... Approach (when evaluation ... with previously stable ... Vasculitis • Endocrinologic ... #Hypertension #Workup