According to a study published in JACC: Cardiovascular Interventions, the use of bleeding avoidance strategies has little impact on bleeding rates post-angioplasty and around 70 percent of the causes for this variation remain unexplained.
The study also evaluated whether those treated with bleeding avoidance strategies were at low risk for this complication since this risk-treatment paradox that patients who need an intervention the most receive it the least has also been shown in previous studies.
Study researchers examined records from 25 million procedures between 2008 and 2013. Data was obtained from the American College of Cardiology NCDR CathPCI Registry. For the purpose of the analysis, the researchers adjusted for patient risk and considered variables such as gender, age, body mass index, the presence of cerebrovascular disease, prior angioplasty and diabetes. In addition,it was also evaluated whether combinations of bleeding avoidance strategies such as the use of the radial artery for access during angioplasty, administering the blood thinner bivalirudin, and sealing off the point of access with a vascular closure device had an impact on bleeding totals.
The researchers observed 125,361 bleeding events during the study period. Those who underwent radial access had less bleeding as compared to patients who did not; Throughout the study period, researchers observed 125,361 bleeding
events. Patients who had the procedure done with radial access had less
bleeding than those who did not. Bivalirudin
therapy was used less frequently in patients who experienced bleeding and vascular closure devices were also used at lower rates.
The study also showed that patients who received bleeding avoidance strategies had a predicted bleeding risk of 3.2 percent as compared to patients who had a predicted bleeding risk of 4.5 percent bud did not receive these strategies. The median hospital rate of use of bleeding avoidance strategy was 86.6 percent and the increased use of these strategies was associated with a decreased probability of an individual
bleeding event.Overall, hospital rates for bleeding varied from 2.6 percent to 9.3 percent. Bleeding avoidance strategies had only a small effect on the overall hospital-level variation and 70 percent of this variation remained unexplained.
Source: JACC: Cardiovascular Interventions
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