Vishnu sahasranamam, slok22

Slok22:    Amruthyuhu  sarvaDruk  Simhaha  samdhatha  samdhiman Sthiraha
                 Ajo  DurmarshaNaha  saastha  Visruthaathma  suraariha

The Immortal,  the universal Surveillance, the lion faced (Narasimha), the
ever  connected,  the ever  gripping Entity,  the Stable, the birthless, the destroyer of  unrightuousness, the Established dectator of the universe, the all pervading 
Atma and  the destroyer of the enemies  of Devatas , is Sree Maha Vishnu.

Visrutatma: The Expanded Field of Attraction ,named as Visrutatma, grips all entities prevailing in that field. The same force of attraction establishes connection in between the existing entities. These entities can be different galaxies or planets or the minds. This sustaining and binding field of attraction,Vishnu, is called by these names : SASTA , SAMDHATA and SAMDHIMAN.  
Like this, Lord Vishnu is addressed as VISRUTATMA. 

ViswaDruk:   Always watches the universe . Vishnu is “The Universal Witness.” 

SASTA : Commander of Viswatma.

These  congnitive charecteristics  of  VISHNu qualifies the Visrutatma to Paramatma.

                      Om Vishnave namaha