Hoover's sign on Physical Exam Paradoxical retraction of the lower intercostal spaces on inspiration Pulmonary hyperinflation → flattening of the diaphragm → impairs its piston-like downward displacement capacity. When this occurs, the inspiratory contraction of the flattened diaphragm decreases the transverse diameter of the lower rib cage. - Dr. Jorge Cortés @Jcortesizaguirr #Hoovers #sign #PhysicalExam #Clinical #Video #Breathing #Respiratory #pulmonary
