Fakülteler / Faculties

Permanent URI for this communityhttps://hdl.handle.net/11727/1395

Browse

Filters

2015 - 20172

Settings

Author: search.filters.author.Sezgin, Atillasearch.filters.applied.f.publicationcategory: search.filters.publicationcategory.Makale - Ulusal Hakemli Dergi

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    A Comparison of Two Coronary Artery Bypass Graft Surgery Techniques with Respect to Acute Kidney Injury
    (2015) Beyazpinar, Deniz Sarp; Gultekin, Bahadir; Kayipmaz, Afsin Emre; Kayipmaz, Cagri; Sezgin, Atilla; Giray, Tufan Akin; Kavalci, Cemil; 0000-0003-2529-2946; 0000-0003-4619-4034; AAC-2597-2020; AGG-1308-2022; ABA-7388-2021; ABA-9675-2021; AGQ-5015-2022
    Background: This study aims to compare the conventional coronary artery bypass graft (CABG) surgery and on-pump beating heart bypass grafting (OPBHB) with respect to acute kidney injury and subsequent dialysis requirement. Methods: Between January 2012 and October 2013, medical records of 77 patients who underwent conventional CABG and 76 patients who underwent OPBHB for coronary artery disease in our clinic were retrospectively analyzed. Results: There was no significant difference in preoperative renal function test results between the groups. However, there was a significant difference in cardiopulmonary bypass time and length of intensive care unit stay (p<0.05). Seven (9.21%) of 76 patients in OPBHB group and 11 (14.28%) of 77 patients in CABG group developed acute kidney injury; however, it did not indicate a statistically significant difference between the groups (p>0.05). One patient in OPBHB group and four patients in CABG group also needed dialysis. Conclusion: Our study results suggest that OPBHB is superior to the conventional CABG in terms of acute kidney injury and, more importantly, development of acute renal failure in patients with a serum creatinine level of 1-1.3 mg/dL.
  • No Thumbnail Available
    Item
    The Effect of Positive End Expiratory Pressure on Right Ventricular Functions in Coronary Artery Bypass Graft Surgery
    (2017) Turker, Melis; Firat, Aynur Camkiran; Pirat, Bahar; Sezgin, Atilla; Pirat, Arash; https://orcid.org/0000-0003-4576-8630; AAI-8897-2021
    Background: This study aims to investigate the effect of positive end-expiratory pressure on the right ventricular functions by speckle tracking method in patients undergoing coronary artery bypass grafting. Methods: This prospective study included a total of 20 patients (17 males, 3 females; mean age 59.7 +/- 10.5 years; range 42 to 77 years) who underwent coronary artery bypass grafting between May 2013 and September 2013. After initiation of 5 cmH(2)O positive end-expiratory pressure during mechanical ventilation before sternotomy, 10 and 20 cmH(2)O of positive end-expiratory pressure were applied in five-min intervals, respectively. Four-chamber and two-chamber views of the right ventricle were recorded at each pressure level using transesophageal echocardiography. The right ventricle diameter and velocity, longitudinal strain and strain rate, and right ventricle fractional area change were calculated. Results: Intraoperative systolic, diastolic, and mean blood pressures and mean heart rate were similar at the three positive end-expiratory pressure levels. The mean right ventricle strain value was significantly lower at 20 cmH(2)O pressure (p<0.001 for both). The mean strain rate was significantly lower at 20 cmH(2)O pressure, compared to 5 cmH(2)O pressure (p=0.03). The right ventricle velocity was found to significantly decreased with increasing positive end-expiratory pressure (p<0.05). The mean right ventricle fractional area change was similar at 5 and 10 cmH(2)O pressures (p=0.063), while it was significantly lower at 20 cmH(2)O pressure (p=0.001). The mean right ventricle diameter decreased with increasing positive end-expiratory pressure, while this decrease was significant at 20 cmH(2)O pressure (p=0.01). Conclusion: Our study results show that 5, 10, and 20 cmH(2)O positive end-expiratory pressures does not significantly change hemodynamic data in patients undergoing coronary artery bypass grafting with normal right ventricular functions; however, 20 cmH(2)O positive end-expiratory pressure leads to decreased right ventricular functions, as assessed by transesophageal echocardiography.