Background: Patients undergoing percutaneous coronary interventions (PCI) with rotational atherectomy (RA) have massively calcified coronary arteries and their prognosis differs between sexes. Aims:The aim of the study was to evaluate the trends in the percentage of sexes in the subsequent years, to compare demographic characteristics between men and women, and to identify factors associated with the risk of periprocedural complications and death. Methods:We analyzed data on 751 113 patients treated with PCI between 2014 and 2020 from the Polish National Registry of Percutaneous Coronary Interventions (ORPKI). We extracted data on 5 177 (0.7%) patients treated with RA of whom 3 552 (68.6%) were men. To determine risk factors of periprocedural complications and death, a multivariable analysis was performed. Results:The proportion of PCIs involving RA increased between 2014 and 2020 (P <0.001). Almost twice as many RA procedures were performed on men (68.55%), and that proportion did not change in the following years. The female patients were older (75.2 [8.3] vs. 70.5 [9.2] years; P <0.001). When considering periprocedural complications, their overall rate (3.45% vs. 2.31%; P = 0.01) and death rate (0.68% vs. 0.17%; P = 0.006) were greater among women. Also, via multivariable analysis, female sex was found to be a risk factor for greater periprocedural mortality (P = 0.02) and overall complication rate (P = 0.007). 1321 Karol Sabatowski et al., Rotational atherectomy and sex w w w . j o u r n a l s . v i a m e d i c a . p l / k a r d i o l o g i a _ p o l s k a W H a t ' S n e W ?Female sex is associated with poorer clinical outcomes after percutaneous coronary interventions (Pcis) including a higher risk of death, myocardial infarction or target vessel failure, and lesion failure in long-term follow-up. Patients undergoing Pci with rotational atherectomy (ra) have massively calcified coronary arteries and differ according to sex. We aimed to assess the trends in the percentage of sexes in the years 2014-2020, to compare demographic characteristics between men and women and to identify factors associated with the risk of periprocedural complications and death. Out of 751 113 patients treated with Pci between 2014 and 2020, we extracted data on 5 177 (0.7%) patients treated with ra of whom 3 552 (68.6%) were men. Sex-related distribution of patients treated with ra was stable during the analyzed period. Multivariable regression analysis confirmed that female sex is a risk factor of periprocedural complications and mortality in patients treated with Pci and ra.

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