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Mechanical Bowel Obstruction and Ileus - Pathogenesis and Clinical Findings
Ileus: Functional bowel "blockage", no peristalsis
Mechanical Obstruction:
Findings Ileus: Functional ... acute abdominal pain ... "light-switch pain ... percussion • Nausea ... #sbo #ileus #pathophysiology
Shock - Pathophysiology 
Inadequate tissue perfusion to meet O2, nutrient requirements
1. Distributive Shock
2. Hypovolemic Shock
3. Cardiogenic
Shock - Pathophysiology ... Obstructive Shock ... #differential # ... diagnosis #algorithm ... #causes
Imaging Modalities for Renal Calculus

AXR. KUB
 - Good far calcium-containing stones useful when limited radiation dose
- Able to identify ... non-calculus causes ... flank or abdominal pain ... detection with function ... for non-calculus causes
Features of a Sickle Cell Crisis 
Sickle-cell disease - an autosomal recessive blood disorder.
Characterized by red
Features of a Sickle ... Crises can be precipitated ... associated with severe pain ... The underlying pathophysiology ... Vaso-ocdusion- Obstruction
Causes and Assessment of the Child with Recurrent Abdominal Pain
> 90% no structural cause identified
Gastrointestinal
 •
Recurrent Abdominal Pain ... Pelvi-ureteric junction ... (PUJ) obstruction ... Recurrent #Abdominal #Pain ... #Differential #