29 results
Pivot-Shift Test in ACL-deficient Knee

This patient has pathologic varus alignment across the knee and a chronic
Pivot-Shift Test ... be performing a high-tibial ... dr.dold.md #Pivot #Shift ... #PivotShift #test
Hyperkalemia Differential Diagnosis Algorithm
R/O Pseudo-hyperkalemia:
 • Possible Lab error! Alwavs Repeat Blood sample!
 • Leukocytosis, Thrombocytosis:
ischemia-induced RBC ... hemolysis) • RBC ... TTKG should be high ... Algorithm #causes #potassium ... #high #pathophysiology
Oxygen-Hemoglobin Dissociation Curve

Left Shift (↓ O2 unloading to tissue), Left = Lower:
 • ↓ H+ (↑
Curve Left Shift ... Temperature Right Shift ... ↑ 2,3-BPG • High ... Dissociation #Curve #pathophysiology
Causes of Hypokalemia - Differential Diagnosis Algorithm
Increased Loss 
 - Increased GI Loss
 - Increased Urinary
Transcellular Shift ... Algorithm #causes #potassium ... #low #pathophysiology
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
• Increased EC shift ... differential #diagnosis #pathophysiology ... #pharmacology #potassium
Bandemia Overview

Normal: < 1%
Clinically significant: > 10%

Band neutrophils are slightly less mature than segmented neutrophils and
Left Shift: • ... Metamyelocyte (Left Shift ... with moderate and high ... #CBC #hematology ... #pathophysiology
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
the basis of the potassium-to-creatinine ... creatinine) • Cell shift ... mmol creatinine) High ... Low-normal EABV, High ... hypokalemia #urine #potassium
Hyperkalemia - Management Algorithm
 • IV calcium
 • IV insulin and glucose and/or salbutamolt
 • Consider
Dialysis Serum potassium ... blocks, QRS axis shift ... #hyperkalemia #potassium ... #high #diagnosis
Thyrotoxic Periodic Paralysis - Illness Script
 • Epidemiology: Asian men age 20-30 with hyperthyroidism of any
and menses • Pathophysiology ... - low TSH with high ... fT4 or high T3 ... • Treatment: Potassium ... hyperthyroidism, Potassium
Sickle Cell Disease - Pathophysiology of disease and complications 

Due to the deformed shape, HbS induces
Cell Disease - Pathophysiology ... shape, HbS induces RBC ... the efflux of potassium ... This leads to RBC ... SickleCell #Disease #Pathophysiology