Lamar Odom's Kids Show Sign of Relief at Hospital

Lamar Odom's children showed signs of relief Friday after leaving their dad's bedside.

Lamar Jr. and Destiny, accompanied by mom Liza Morales, showed faint smiles outside their Vegas hotel.

As we reported, Lamar's heart function has improved, and he was briefly taken off the ventilator ... all good signs.

Our sources, however, make it clear ... Lamar is in critical condition and far from out of the woods.