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Ailing DMK president M Karunanidhi is extremely critical and unstable, a city hospital where he is being treated for the 11th day on Tuesday said.
"There has been significant decline in the clinical condition of Kalaignar M Karunanidhi over the last few hours. Despite maximum medical support, his vital organ functions continue to deteriorate.
"His condition is extremely critical and unstable," Hospital executive director Dr Aravindan Selvaraj said in a bulletin.
Karunanidhi is being treated for fever due to Urinary Tract Infection (UTI) with intravenous antibiotics and fluids.
His son and DMK working president MK Stalin called on chief minister K Palaniswami at his residence and was closeted with him for some time, officials said.
Karunanidhi was admitted to the intensive care unit of the hospital on July 28 following a dip in blood pressure, which stabilised following medical intervention.
The Kauvery Hospital had on Monday said that the condition Karunanidhi had "declined" and keeping his vital organs functioning remains a "challenge", indicating the next 24 hours could be crucial.
The hospital had, however, said on July 31 that an extended stay could be necessary due to age-related overall decline in his general health, altered liver function and haematological parameters.
Karunanidhi had been not keeping well since October 2016, and had recently undergone a procedure to change his tracheostomy tube, provided to help in breathing.
