34 results
Pivot-Shift Test in ACL-deficient Knee

This patient has pathologic varus alignment across the knee and a chronic
Pivot-Shift Test ... in ACL-deficient ... dr.dold.md #Pivot #Shift ... #PivotShift #test ... #ACL #Knee #Injury
Normal (Negative) Pivot-Shift Test for ACL Knee Injury

Andrew Dold, MD @dr.dold.md

#Pivot #Shift #PivotShift #test #ACL #Knee
Negative) Pivot-Shift ... Test for ACL Knee ... Injury Andrew ... #PivotShift #test ... #ACL #Knee #Injury
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
Angiotensin-converting enzyme (ACE ... • Increased EC shift ... • Exogenous (KCL ... differential #diagnosis #pathophysiology ... #pharmacology #potassium
Rhabdomyolysis - Differential Diagnosis and Management Summary

Trauma:
 • Immobilization, Crush iniury, Compartment syndrome, Electrical injury
Exertional:
 •
syndrome, Electrical injury ... Dermatomyositis) AKI - Pathophysiology ... Shift of extracellular ... fluid into injured ... Monitor potassium
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
Transcellular Shift ... Algorithm #causes #potassium ... #low #pathophysiology
Pivot Shift test for Knee Instability

The patient lies supine while the examiner grasps the leg by
Pivot Shift test ... indicating likely ACL ... Injury. ... #PivotShift #test ... #ACL #Knee #Injury
Drugs that Impair Renal Potassium Excretion 

Decreased ENaC channel function: Amiloride, Triamterene, Pentamidine
Decreased Aldosterone Synthesis: Heparin,
that Impair Renal Potassium ... Aldosterone Release: ACE ... #Hyperkalemia #Pathophysiology ... Pharmacology #Impaired #Potassium
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
• Trauma/Crush injury ... • NSAIDs • ACE ... • Recent IV potassium ... Intracellular Shift ... diagnosis #causes #potassium
Clavicular Fracture: Pathogenesis and clinical findings

Group I (69%) - Middle third (mid-shaft)
Group II (29%) - Distal
Middle third (mid-shaft ... the mechanism of injury ... other injuries in all ... Grading #Diagnosis #pathophysiology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
• Trauma/Crush injury ... • NSAIDs • ACE ... • Recent IV potassium ... Intracellular Shift ... diagnosis #causes #potassium