Translate the text from Welsh to English.



 
O heddiw, bydd y GIG ledled y DU yn ysgrifennu at gleifion sydd wedi cael rhai mathau o lawdriniaeth agored ar y galon. Mae’n gwneud hyn i roi gwybod iddynt fod yna risg isel iawn y gallent fod wedi dal haint a achosir gan Mycobacterium chimaera.  Ni chysylltir ond â’r cleifion hynny sydd wedi cael llawdriniaeth ar y galon i amnewid neu atgyweirio falf y galon, gan gynnwys  triniaethau fel rhan o lawdriniaeth ar gyfer clefyd cynhenid y galon, a hynny ers mis Ionawr 2013\. Mae’r risg o ddal yr haint hwn i gleifion sydd wedi cael mathau eraill o lawdriniaeth ar y galon yn isel iawn, ac ni  fydd yn cymryd camau i gysylltu â’r cleifion hyn.  
  
Bydd Iechyd Cyhoeddus Cymru a saith bwrdd iechyd Cymru yn anfon llythyrau i  2,771 o gleifion fel rhan o’r ymarfer hwn sy’n cael ei gynnal ar draws y DU.  
  
Mae cleifion sydd wedi cael llawdriniaeth o’r math hwn ers 2013 yn cael gwybod bod risg isel y gallent fod wedi dal yr haint hwn. Y risg yw oddeutu un achos ym mhob 5,000 o lawdriniaethau.   
  
Bu 28 o achosion o’r haint yn y DU hyd yn hyn, gan gynnwys tri achos sydd wedi eu nodi fel achosion o Gymru, o gleifion sydd wedi cael llawdriniaeth yma yng Nghymru ac yn Lloegr. Mae achosion wedi cael eu cofnodi’n rhyngwladol.  
  
Mae’r haint yn gysylltiedig â math penodol o ddyfais wresogi\-oeri a ddefnyddir i reoli tymheredd y gwaed mewn theatrau llawdriniaethau yn ystod llawdriniaeth.  
  
Dim ond cleifion o Gymru sydd wedi cael llawdriniaeth yn Ysbyty Athrofaol Cymru yng Nghaerdydd, neu mewn canolfan triniaethau cardiaidd yn Lloegr fydd yn derbyn llythyr. Nid ysgrifennir at gleifion sydd wedi cael llawdriniaeth yn Ysbyty Treforys yn Abertawe, gan nad yw’r ysbyty hwnnw’n defnyddio’r math penodol o uned wresogi\-oeri sydd wedi ei chysylltu â’r haint hwn.  
  
Bydd y llythyron hyn yn egluro na ddylai cleifion boeni, hyd yn oed os ydynt wedi cael llawdriniaeth i amnewid neu atgyweirio falf y galon, oni bai eu bod yn dangos symptomau’r haint.  
  
Mae croeso i unrhyw un sydd wedi cael llythyr, ac sy’n parhau i boeni, ffonio llinell gymorth ddynodedig Iechyd Cyhoeddus Cymru ar 0800 035 2877, a fydd ar agor i dderbyn galwadau o 20 Mawrth hyd at 7 Ebrill.  Bydd gwasanaethau cardiaidd lleol ar gael i ymateb i unigolion os bydd angen.  
  
Rhoddodd yr Asiantaeth Rheoleiddio Meddyginiaethau a Chynhyrchion Gofal Iechyd gyngor ar ddyfeisiau gwresogi\-oeri sy’n achosi haint i ganolfannau llawdriniaethau ym mis Tachwedd 2015, ar ôl i’r risg y gallai cleifion ddal yr haint bacterium chimaera gael ei nodi. Ni nodwyd unrhyw achosion o’r haint mewn cleifion sydd wedi cael llawdriniaeth yn y DU ers i’r canllawiau hyn gael eu cyhoeddi.  
  








Translation:


 
The NHS across the UK is writing to patients who have had certain types of open heart surgery.  This is to inform them that they have a very low risk of having contracted an infection caused by Mycobacterium chimaera.  Only those patients who have had heart valve replacement or valve repair surgery, including procedures as part of congenital heart disease surgery since January 2013 are being contacted.  Patients who have had other types of open heart surgery have a very minimal risk of contracting this infection are not being proactively contacted.  

  

Public Health Wales and our seven Welsh health boards are sending letters to around 2,770 patients as part of this UK\-wide exercise.  

  

Patients who have received such surgery since 2013 will be told they are at low risk of having contracted this infection.  The risk to patients is around one case in 5,000 operations.  

  

There have been 28 cases of the infection in the UK to date, 3 cases have been identified from Wales, who have been operated on both here and in England.  Cases have been reported internationally.  

  

The infection is linked to the use of a certain type of heater cooler device which is used in operating theatres during surgery to regulate blood temperature.  

  

Welsh patients will only receive letters if they received surgery at the University Hospital of Wales in Cardiff, or in a cardiac centre in England.  Patients who received surgery at Morriston Hospital in Swansea will not be written to as the hospital does not use the particular type of heater\-cooler unit which has been linked to this infection.  

  

These letters will explain that even if patients have had valve replacement or repair surgery, they should not be concerned unless they experience symptoms of infection.  

  

Anyone who has received a letter and still has concerns can contact the dedicated Public Health Wales helpline on 0800 035 2877, which will be available from 20 March to 7 April.  Local cardiology services will be available to follow up any individual should this be required.  

  

Advice on contaminating heater cooler devices was issued to surgical centres in November 2015 by the Medicines and Healthcare Products Regulatory Agency (MHRA) after Mycobacterium chimaera infection risk was identified.  No cases of the infection have been identified in patients who had surgery in the UK since this guidance was published.