Former prime minister Nawaz Sharif has been "at the risk of another stroke", his daughter said on Monday.
The former premier arrived at Sharif Medical City Hospital, Lahore where a team of Aga Khan University Hospital specialists examined him, Nawaz's daughter, Maryam, said on Twitter.
She said the doctors included cardiac interventionist, vascular surgeon, urologist and nephrologist, who reviewed his recent investigations and scans.
Maryam said that reports were being compiled, adding that her father's [health] problems were serious and the doctors were concerned about them.
Responding to reports about about a third bypass surgery suggested to Nawaz, she said the doctors were mulling over it, though final recommendations were still awaited.
"Apart from the heart, the carotid arteries also either need stenting or surgery because the blood supply to [Nawaz's] brain is compromised which puts him at risk of another stroke," Maryam said, requesting everyone for prayers.
Meanwhile, Nawaz's personal physician thanked Aga Khan University for constituting a high-powered team of medical experts.
"They had a detailed consultation and evaluation of former PM Nawaz Sharif for further management," Dr Adnan said.
Earlier this month, Maryam had tweeted that the doctors had recommended a backup pacemaker and implantable cardioverter-defibrillator for her father.
Nawaz, who was released from Kot Lakhpat Jail in March after the Supreme Court granted him bail for six weeks to obtain medical treatment in the country, has been undergoing treatment since.