The predictive value of whole blood viscosity for the development of cerebrovascular events after carotid endarterectomy
21st Congress of Turkish Society for Vascular and Endovascular Surgery, 24th Congress of Asian Society for Vascular Surgery, 18th Asian Venous Forum, 12th Congress of Turkish Society of Phlebology, Antalya, Türkiye, 30 Kasım - 03 Aralık 2023, ss.96, (Özet Bildiri)
- Yayın Türü: Bildiri / Özet Bildiri
- Doi Numarası: 10.9739/tjvs.2023.30.11
- Basıldığı Şehir: Antalya
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.96
- Trakya Üniversitesi Adresli: Evet
Özet
Aim: Carotid endarterectomy is a surgical technique that carries risks such as stroke and transient ischaemic attack during and after surgery. In this study, we investigated the predictive value of whole blood viscosity in predicting transient ischaemic attack and stroke in the first year after surgery. Material and Methods: Data from all patients who underwent carotid endarterectomy in our hospital were retrospectively analysed. All parameters required for the calculation of whole blood viscosity were obtained from the patients' routine preoperative blood tests. Of all patients, the results of the preoperative blood tests were available for 149 patients. For these patients, hospital admissions, outpatient clinic and emergency department reports, and imaging results in the postoperative year were retrospectively evaluated. At 1-year follow-up after carotid endarterectomy, 15 patients developed cerebrovascular accidents. This group of patients was referred to as group 1 and patients who did not suffer cerebrovascular accidents were referred to as group 2. The two groups were compared in terms of whole blood viscosity. Results: The mean age was 63.93±7.46 years in group 1 and 64.15±9.15 years in group 2. There was no statistically significant difference between the two groups in terms of surgical technique, type of patch used, use of shunt, presence of severe contralateral stenosis and preoperative symptoms. When comparing the two groups in terms of whole blood viscosity at high shear rate (group 1, 12.37±0.99 cP; group 2, 11.81 ± 0.94 cP) and low shear rate (group 1, -13.60±21.92 cP; group 2, -26.18±20.81 cP), there was a statistically significant difference between them (p=0.029). In addition, the preoperative albumin/CRP ratio was significantly lower in group 1 patients than in group 2 patients (p=0.040). When the predictive power of these two parameters for cerebrovascular accidents was calculated, the AUC was 0.636 for whole blood viscosity and 0.662 for albumin/CRP ratio. Conclusion: We found that preoperative whole blood viscosity was significantly higher and albumin/CRP ratio was significantly lower in patients with cerebrovascular accidents within 1 year after carotid endarterectomy. We believe that with a larger sample size it will be possible to draw more accurate conclusions regarding predictive power.