A GP surgery in Maesteg has asked patients with "significant life-limiting illnesses" to sign a DNACPR (do not attempt CPR) form in the case they contract coronavirus.
Llynfi Surgery on Llynfi Road sent a letter to patients with health conditions such as incurable cancer, motor neurone disease, and untreatable heart and lung conditions.
It told those patients they are "unlikely to be offered hospital admission" if they become unwell with the virus and "certainly will not be offered a ventilator bed".
It comes after UK Government calls to boost the number of vital ventilators need to treat coronavirus patients.
A total of 98 people have died in Wales after contracting the virus, with the number of confirmed cases standing at 1,837 as of 1 April.
One patient who received the letter said, "It not only greatly upset me but my family and close friends.
"It was like having my death warrant being sent by the grim reaper. Itmade me feel worthless.
"I've lived with cancer for eight years and I want to live another couple of years. I'm not digging my grave yet."
The surgery opened the letter by writing "this is a very difficult letter for the practice to write to you".
It listed the benefits of signing a DNACPR as:
Your GP and more importantly your friends and family will know not to
Scarce ambulance resources can be targeted to the young and fit who
have chance of surviving the infection
You reduce the risk of transmitting virus to friends, family and emergency responders from CPR
The letter said "in an ideal situation" the conversation would be had in person but said this posed a risk of GPs catching the virus.
The final line reads: "We will not abandon you but we need to be frank and realistic about what the next few months holds for all of us."
A spokesperson for Cwm Taf Morgannwg University Health Board apologised for any distress caused.
In a statement, they said, " A letter was recently sent out from Llynfi Surgery to a small number of patients. We have been made aware that the letter has caused upset to some of the patients who received it.
"This was not the intent and the surgery apologise for any distresscaused. Staff at the surgery are speaking to those patients whoreceived the letter to apologise directly and answer any concerns theymay have."
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