RESUMEN
Abstract Background: The shape of the right coronary artery (RCA) may vary between individuals. Objective: The aim of this study was to investigate whether the shape of RCA has any effect on TIMI frame count (TFC), TIMI flow score, and lesion distribution length in patients with ST-elevation myocardial infarction (STEMI) caused by RCA. Materials and methods: The angiograms of 163 patients who applied to our hospital with STEMI caused by the RCA were included in the study. TFCs were calculated. Results: The patients were divided into two groups according to the geometric shape of the RCA as C (124 pts, 101 males, mean age 66.1 ± 12.3 years) or S (39 pts, 30 males, mean age 60.0 ± 10.8 years) based on the angiographic view from the left oblique position. Lesion location was significantly higher in the proximal and mid regions compared to the distal region in patients with C-RCA (p < 0.001). TFC was significantly higher in the S-RCA group (p = 0.0014). There was a statistically significant difference between the groups in terms of mean age of p = 0.003. Conclusion: Lesion frequency was significantly higher in the proximal and mid regions in patients with C-RCA. TFCs were significantly higher in the S-RCA group. Longer S-RCA length compared to C-RCA and local shear stress characteristics may also explain these findings.
Resumen Antecedentes: La forma de la arteria coronaria derecha puede variar entre los individuos. Objetivo: El objetivo de este estudio fue investigar si la forma de la arteria coronaria derecha (RCA) tiene algún efecto sobre el conteo de cuadros TIMI (TFC), el puntaje de flujo TIMI y la longitud de distribución de la lesión en pacientes con infarto de miocardio con elevación del ST (STEMI) causado por RCA. Material y métodos: Se incluyeron en el estudio los angiogramas de 163 pacientes que se aplicaron a nuestro hospital con STEMI causado por la arteria coronaria derecha. Se calcularon los TFC. Resultados: Los pacientes se dividieron en dos grupos según la forma geométrica de la arteria coronaria derecha como C (124 puntos, 101 masculino, edad media 66.1 ± 12.3 años) o S (39 puntos, 30 masculino, edad media 60.0 ± 10.8 años) según vista angiográfica desde la posición oblicua izquierda. La ubicación de la lesión fue significativamente mayor en las regiones proximales y medias en comparación con la región distal en pacientes con C-RCA (p < 0.001). TFC fue significativamente mayor en el grupo S-RCA (p = 0.0014). Hubo una diferencia estadísticamente significativa entre los grupos en términos de edad media de (p = 0.003). Conclusión: La frecuencia de las lesiones fue significativamente mayor en las regiones proximales y medias en pacientes con C-RCA. Los TFC fueron significativamente más altos en el grupo S-RCA. Una mayor longitud de S-RCA en comparación con C-RCA y las características locales de tensión de corte también pueden explicar estos hallazgos.
RESUMEN
BACKGROUND: The shape of the right coronary artery (RCA) may vary between individuals. OBJECTIVE: The aim of this study was to investigate whether the shape of RCA has any effect on TIMI frame count (TFC), TIMI flow score, and lesion distribution length in patients with ST-elevation myocardial infarction (STEMI) caused by RCA. MATERIALS AND METHODS: The angiograms of 163 patients who applied to our hospital with STEMI caused by the RCA were included in the study. TFC's were calculated. RESULTS: The patients were divided into two groups according to the geometric shape of the RCA as C (124 pts, 101 males, mean age 66.1 ± 12.3 years) or S (39 pts, 30 males, mean age 60.0 ± 10.8 years) based on the angiographic view from the left oblique position. Lesion location was significantly higher in the proximal and mid regions compared to the distal region in patients with C-RCA (p < 0.001). TFC was significantly higher in the S-RCA group (p = 0.0014). There was a statistically significant difference between the groups in terms of mean age of p = 0.003. CONCLUSION: Lesion frequency was significantly higher in the proximal and mid regions in patients with C-RCA. TFC's were significantly higher in the S-RCA group. Longer S-RCA length compared to C-RCA and local shear stress characteristics may also explain these findings.