THIRUVANANTHAPURAM: Chief Minister Pinarayi Vijayan visited former chief minister and senior CPM leader V S Achuthanandan in the hospital. Party state secretary M V Govindan also accompanied the chief minister. The condition of VS is stated to be very critical. There had been a change in his BP in the last few hours. The chief minister and the party secretary are holding talks with the medical board of Pattom SUT Hospital.