Cardiopulmonary bypass management and acute renal failure: risk factors and prognosis

Perfusion ◽  
2008 ◽  
Vol 23 (6) ◽  
pp. 323-327 ◽  
Author(s):  
E Sirvinskas ◽  
J Andrejaitiene ◽  
L Raliene ◽  
L Nasvytis ◽  
A Karbonskiene ◽  
...  

The aim of the study was to investigate if acute renal failure (ARF) following cardiac surgery is influenced by CPB perfusion pressure and to determine risk factors of ARF. Our research consisted of two studies. In the first study, 179 adult patients with normal preoperative renal function who had been subjected to cardiac surgery on CPB were randomized into three groups. The mean perfusion pressure (PP) during CPB in Group 65 (68 patients) was 60–69.9 mmHg, in Group 55 (59 patients) – lower than 60 mmHg and in Group 75 (52 patients) – 70 mmHg and higher. We have analyzed postoperative variables: central venous pressure, the need for diuretics, urine output, fluid balance, acidosis, potassium level in blood serum, the need for hemotransfusions, nephrological, cardiovascular and respiratory complications, duration of artificial lung ventilation, duration of stay in ICU and in hospital, and mortality. In the second study, to identify the risk factors for the development of ARF following CPB, we retrospectively analysed data of all 179 patients, divided into two groups: patients who developed ARF after surgery (group with ARF, n = 19) and patients without ARF (group without ARF, n = 160). We found that urine output during surgery was statistically significantly lower in Group 55 than in Groups 65 and 75. The incidence of ARF in the early postoperative period did not differ among the groups: it developed in 6% of all patients in Group 65, 4% in Group 55 and 6% in Group 75. There were no differences in the rate of other complications (cardiovascular, respiratory, neurological disorders, bleeding, etc) among the groups. There were 19 cases of ARF (10.6%), but none of these patients needed dialysis. We found that age (70.0 ± 7.51 vs. 63.5 ± 10.54 [standard deviation, SD], P = 0.016), valve replacement and/or reconstruction surgery (57.9% vs. 27.2%, P = 0,011), combined valve and CABG surgery (15.8% vs. 1.4%, P = 0.004), duration of CPB (134.74 ± 62.02 vs. 100.59 ± 43.99 min., P = 0.003) and duration of aortic cross-clamp (75.11 ± 35.78 vs. 53.45 ± 24.19 min., P = 0.001) were the most important independent risk factors for ARF. Cardiopulmonary bypass perfusion pressure did not cause postoperative renal failure. The age of patient, valve surgery procedures, duration of cardiopulmonary bypass and duration of aorta cross-clamp are potential causative factors for acute renal failure after cardiac surgery.

2019 ◽  
Vol 6 (3) ◽  
pp. 756
Author(s):  
Praveen Dhaulta ◽  
Vikas Panwar

Background: Acute kidney injury (AKI) is one of the most serious complications during the postoperative period of cardiac surgery. Multiple variables predict the ARF after cardiac surgery. Objective of this study was to evaluate the significance of pre and peri-operative variables which may help in predicting the chances of developing ARF after cardiac surgery.Methods: This study was an observational, prospective study conducted among patients who were scheduled to undergo open heart surgery under cardiopulmonary bypass.Results: In total, 50 patients who underwent open-heart surgery, ARF was seen in 5 patients, with the incidence rate of 10%. Acute renal failure was present in one patient with ejection fraction <35, 2 patients had ejection fraction between 35 to 50 and 2 patients with ejection fraction >50. It was seen in 4 patients with 1-2 hrs of cardiopulmonary bypass and in 1 patient with >2 hrs of cardiopulmonary bypass. ARF was also seen in 4 patients with hematocrit between 22-26% and in 1 patient with >26%.Conclusions: The study provided a clinical variable score that can predict ARF after open-heart surgery. The score enhances the accuracy of prediction by accounting for the effect of all major risk factors of ARF.


2012 ◽  
Vol 20 (3) ◽  
pp. 275-280 ◽  
Author(s):  
Khosrow Hashemzadeh ◽  
Shahryar Hashemzadeh ◽  
Mahnaz Dehdilani

Perfusion ◽  
2005 ◽  
Vol 20 (6) ◽  
pp. 317-322 ◽  
Author(s):  
Ilknur Bahar ◽  
Ahmet Akgul ◽  
Mehmet Ali Ozatik ◽  
Kerem M Vural ◽  
Ali E Demirbag ◽  
...  

Background: Acute renal failure (ARF) development after cardiac surgery carries high mortality and morbidity. Methods: Out of 14 437 consecutive patients undergoing open-heart surgery between January 1991 and May 2001, 168 (1.16%) developed postoperative ARF mandating hemodialysis. Possible perioperative risk factors, and the prognosis of this dreadful, often fatal complication were investigated. Results: The mortality rate in this group was 79.7% (134 patients). The risk factors associated with postoperative ARF were advanced age (p-0.000), diabetes mellitus (p-0.000), hypertension (p-0.000), high preoperative serum creatinine levels (p-0.004), impaired left ventricular function (p-0.002), urgent operation (p-0.000) or reoperation (p-0.007), prolonged cardiopulmonary bypass (CPB) (p-0.000) and aortic cross-clamp (ACC) (p-0.000) periods, level of hypothermia (p-0.000), concomitant procedures (p-0.000), low cardiac output state (p-0.000), re-exploration for bleeding or pericardial tamponade (p-0.000), and deep sternal or systemic infection (p-0.000). Of those who could be discharged from hospital, renal functions were restored in 21 patients (12.5%); however, eight patients (4.7%) became hemodialysis dependent. The mean follow-up period was 5.79/3.2 years (range: 4 months to 13 years; a total of 195 patient-years), and 10-year survival was 58.69/10.2% in the discharged patients. Conclusions: ARF development after cardiac surgery often results in high morbidity and mortality. Recognizing risk factors permits the timely institution of proper treatment, which is the key to reducing untoward outcomes.


2005 ◽  
Vol 8 (1) ◽  
pp. 34 ◽  
Author(s):  
Juliane Kilo ◽  
Josef E. Margreiter ◽  
Elfriede Ruttmann ◽  
Johannes O. Bonatti ◽  
Guenther Laufer

Background: Acute renal failure (ARF) after cardiac surgery is a serious adverse event that is associated with high perioperative mortality and prolonged hospitalization. The aim of our study was to evaluate pre- and intraoperative risk factors for the development of ARF requiring hemofiltration after cardiac surgery. Methods: From February 2002 through February 2003, 913 patients underwent cardiac surgery at our institution. Seventy-three patients developed ARF (8.1%), 16 patients were excluded from the study because of chronic end-stage renal insufficiency. Patient characteristics and operative variables were analyzed. A multivariate logistic regression analysis was performed to determine risk factors for ARF. Results: Patients who developed ARF were older (P < .001; odds ratio [OR], 1.084; 95% confidence interval [CI], 1.0371.133) than patients who did not develop ARF. Furthermore, cardiopulmonary bypass duration (P = .007; OR, 1.013; 95% CI, 1.004-1.032) and emergent surgery (P = .011; OR, 6.667; CI, 1.538-28.571) were predictive for development of ARF. The strongest predictor for ARF was a preoperative creatinine level 2 mg/dL (P < .001; OR, 97.519; 95% CI, 22.363425.252). Most interestingly, even moderately elevated preoperative creatinine levels (1.3-1.99 mg/dL) independently predict ARF after cardiac surgery (P = .001; OR, 3.838; 95% CI, 1.793-8.217). Conclusion: Our data indicate that emergent surgery as well as advanced age and long duration of cardiopulmonary bypass independently predict ARF after cardiac surgery. Most importantly, even slightly impaired preoperative creatinine levels predict the development of ARF requiring hemofiltration after cardiac surgery.


Angiology ◽  
1998 ◽  
Vol 49 (9) ◽  
pp. 789-800 ◽  
Author(s):  
Wai-Sing Suen ◽  
Che-Keung Mok ◽  
Shiu-Wah Chiu ◽  
King-Loong Cheung ◽  
Wai-Tsun Lee ◽  
...  

Perfusion ◽  
2010 ◽  
Vol 25 (5) ◽  
pp. 337-342 ◽  
Author(s):  
Qiang Ji ◽  
YunQing Mei ◽  
XiSheng Wang ◽  
Jing Feng ◽  
JianZhi Cai ◽  
...  

Author(s):  
Juan M Pericàs ◽  
Marta Hernández-Meneses ◽  
Patricia Muñoz ◽  
Ana Álvarez-Uría ◽  
Blanca Pinilla-Llorente ◽  
...  

Abstract Background Little is known about the characteristics and impact of septic shock (SS) on the outcomes of infective endocarditis (IE). We aimed to investigate the characteristics and outcomes of patients with IE presenting with SS and to compare them to those of IE patients with sepsis (Se) and those with neither Se nor SS (no-Se-SS). Methods Prospective cohort study of 4,864 IE patients from 35 Spanish centers (2008 to 2018). Logistic regression analyses were performed to identify risk factors for SS and mortality. Results SS and Se presented respectively in 597 (12.3%) and 559 (11.5%) patients. Patients with SS were younger and presented significantly higher rates of diabetes, chronic renal and liver disease, transplantation, nosocomial acquisition, S.aureus, IE complications, and in-hospital mortality (62.5%, 37.7% for Se and 18.2% for no-Se-SS,p&lt;.001). S.aureus (OR 1.94, 95%CI 1.34-2.81,p&lt;.001), Gram negative (OR 2.21,95%CI 1.25-3.91,p.006), nosocomial acquisition (OR 1.44,95%CI 1.07-1.94,p.015), persistent bacteremia (OR 1.82, 95%CI 1.24-2.68,p.002), acute renal failure (OR 3.02,95% 2.28-4.01,p&lt;.001), CNS emboli (OR 1.48,1.08-2.01,p.013), and larger vegetation size (OR 1.01,95%CI 1.00-1.02,p.020) were associated with a higher risk of developing SS. Charlson score, heart failure, persistent bacteremia, acute renal failure, mechanical ventilation, worsening of liver disease, S.aureus and receiving aminoglycosides within the first 24h were associated with higher in-hospital mortality, whereas male sex, native valve IE and cardiac surgery were associated with lower mortality. Conclusions SS is frequent and entails dismal prognosis. Early identification of patients at risk of developing SS and early assessment for cardiac surgery appear as key factors to improve outcomes.


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