Only nitrogen dioxide was linked to an increased risk of a hospital admission for cardiovascular problems, including heart failure, and an increased risk of a particular type of heart attack (non-ST elevation) in the MINAP data.
And, as First Minister Rhodri Morgan recovers at home after undergoing an emergency angioplasty to clear two partially blocked arteries, the MINAP report reveals that only two hospitals in Wales - Morriston Hospital, in Swansea, and the University Hospital of Wales, in Cardiff - are able to offer such a service.
Although the sixth MINAP report states that some improvements have been made in Wales in the last year - particularly in preventing a second heart attack - the nation is some three to four years behind England.
The MINAP report found the percentage of hospitals in England providing thrombolytic (clot-busting) treatment to 75% of their eligible patients within 30 minutes of the patient's arrival at hospital had increased from 80% to 89% since the last report in June 2004.
This may be the first year that Welsh hospitals have been included in the Myocardial Infarction National Audit Project (Minap) data, but this will not be the first year that a heart attack patient needs lifesaving, clot-busting drugs.
Wales must move forward from the sorry position it finds itself today in the Minap report.