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Laboratory Evaluation of Patients for Thyroid Disease 
Hyperthyroidism:
 • Graves disease - TSH low; free T4
some cases, T3 is elevated ... ; TRAbs or TSI elevated ... ; normal or increased ... ; normal or increased ... ; increased; decreased
Diagnosis of Hypokalemia - Differential Algorithm 

Categorized by Causes: Redistribution, Extrarenal Losses, Renal Losses (High and
- Differential Algorithm ... Renal Losses (High ... and Low Blood Pressure ... #Differential #Algorithm
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
Differential Diagnosis Algorithm ... Increased Loss ... - Increased ... Differential #Diagnosis #Algorithm ... causes #potassium #low
The Diagnostic Approach to Hyperkalemia
Drugs
 - Amiloride
 - Spironolactone
 - Triamterene
 - Trimethoprim
 - Pentamidine
 -
transplant - SLE High ... deficiency - Heparin/ LMW ... Ketoconazole Low ... #Hyperkalemia #Algorithm
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
protease activity - A low ... If the value is low ... Normal or slightly elevated ... Mild-to-moderate decrease ... Haptoglobin - Low
Types of Renal Calculi

Calcium oxalate
 - Interstitial apatite plaque, Low urine volume, Increased urinary calcium excretion,
apatite plaque, Low ... urine volume, Increased ... calcium excretion, Increased ... and intestine, Low ... Mycoplasma infections, High
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
Plasma ACTH - Elevated ... aldosterone - Low ... onset, there is an increase ... cortisol is minimally increased ... will produce an increase
Abnormalities in Rate and Rhythm of Breathing 
Normal 
The respiratory rate is about 14—20 per min
chest pain, and an elevated ... Slow Breathing ( ... Bradypnea) Slow ... depression, and increased ... narrowed airways increase
Neonatal Resuscitation - Preparation and Overview
Preparation:
 - All health professionals dealing with newborn infants should be
attendance at all high-risk ... Re-assess - If no increase ... response - If no increase ... detectable or slow ... detectable or slow
Causes of Hypokalemia
I. Decreased intake
   A. Starvation
   B. Clay ingestion
II. Redistribution into
Increased ß2-adrenergic ... Increased loss ... flow and distal ... Differential #Diagnosis #Low ... #Potassium #Classification