Yes. By all means, patrol Recent Changes all you want. We actually have a
Committee that you can join to keep Recent Changes clean.
Though some admins check Recent Changes regardless of rather it's been patrolled or not, patroling does help keep out vandalism and should also be checked for accuracy.
If you're not sure whether the contribution is vandalism or not (or accurate or not), just don't patrol it. Someone else will see the red mark and check the change.
Thanks for all the time spent patrolling. It helps keep our wiki clean!