Correlation of Possible Kidney Injury in the Immediate Postoperative Period of Patients Having Undergone a Cardiac Surgery

2014 ◽  
Vol 5 (1) ◽  
pp. 40-59
Author(s):  
Georganta Stavroula ◽  
Gkeka Perikleia
Keyword(s):  
Cardiac Surgery ◽  
Postoperative Complications ◽  
Renal Dysfunction ◽  
Postoperative Period ◽  
Pulse Pressure ◽  
Systolic Hypertension ◽  
Kidney Injury ◽  
Isolated Systolic Hypertension ◽  
Negative Effects ◽  
Routine Basis

Cardiac surgeries nowadays are performing in a routine basis and most of the time with a great percentage of success. However, there are cases in operations that may appear postoperative complications such as renal dysfunction, which can endanger patient's life. Preexisting isolated systolic hypertension and wide pulse pressure increase the risk of postoperative renal dysfunction in the cardiac surgery population. New data suggest that BP lability (i.e., BP excursions outside an acceptable physiologic range) during cardiac surgery may also be an important predictor of subsequent renal dysfunction. Alongside, various clinic parameters for example, the time spent in the unit, other postoperative complications etc. related to kidney injury have negative effects for the progress of patients' suffering in the unit. The purpose of this study is the correlation between the appearance of kidney injury in patients undergoing a cardiac surgery the immediate postoperative period and other preoperative, intraoperative and postoperative parameters.

scholarly journals Assessment of pain during rest and during activities in the postoperative period of cardiac surgery

2014 ◽  
Vol 22 (1) ◽  
pp. 136-143 ◽  
Author(s):  
Larissa Coelho de Mello ◽  
Silvio Fernando Castro Rosatti ◽  
Priscilla Hortense
Keyword(s):  
Cardiac Surgery ◽  
Postoperative Pain ◽  
Postoperative Complications ◽  
Postoperative Period ◽  
Pain Assessment ◽  
Descriptive Study ◽  
Deep Breathing ◽  
Cohort Design ◽  
Surgical Recovery ◽  
Over Time

OBJECTIVE: to assess the intensity and site of pain after Cardiac Surgery through sternotomy during rest and while performing five activities. METHOD: descriptive study with a prospective cohort design. A total of 48 individuals participated in the study. A Multidimensional Scale for Pain Assessment was used. RESULTS: postoperative pain from cardiac surgery was moderate during rest and decreased over time. Pain was also moderate during activities performed on the 1st and 2nd postoperative days and decreased from the 3rd postoperative day, with the exception of coughing, which diminished only on the 6th postoperative day. Coughing, turning over, deep breathing and rest are presented in decreased order of intensity. The region of the sternum was the most frequently reported site of pain. CONCLUSION: the assessment of pain in the individuals who underwent cardiac surgery during rest and during activities is extremely important to adapt management and avoid postoperative complications and delayed surgical recovery.

scholarly journals Impact of Cardiac Function Improvement on Cardiac Surgery Associated Acute Kidney Injury for Patients with Preoperative Renal Dysfunction

2020 ◽  
Author(s):  
Jiarui Xu ◽  
Xin Chen ◽  
Jing Lin ◽  
Yang Li ◽  
Bo Shen ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Renal Function ◽  
Cardiac Surgery ◽  
Cardiac Function ◽  
Renal Dysfunction ◽  
Significant Risk ◽  
Kidney Injury ◽  
Normal Function ◽  
Function Group ◽  
Postoperative Aki

Abstract Background: We aim to investigate whether the postoperative cardiac function improve or not would affect the risk of cardiac surgery associated acute kidney injury (AKI) for patients with preoperative renal dysfunction. Method: Data from patients underwent cardiac surgery from April 2012 to February 2016 were collected. Renal dysfunction was defined as preoperative SCr >1.2 mg/dL (females) or >1.5 mg/dL (males). Patients were grouped as normal renal function group, renal dysfunction with chronic kidney disease (CKD group), and non CKD group. △LVEF=postoperative LVEF - preoperative LVEF. Cardiac function improved was defined as △LVEF ≥10. Patients were further divided into non CKD & cardiac function improved (non CKD+), non CKD & cardiac function not improved (non CKD-), CKD & cardiac function improved (CKD+) and CKD & cardiac function not improved (CKD-) subgroups.Results: A total of 8,661 patients were allocated as normal renal function (n=7,903), non CKD(n = 662) and CKD (n = 136) groups. Both non CKD and CKD groups had higher AKI incidence than normal function group (39.5% vs 30.0%, P < 0.001; 61.8% vs 30.0%, P<0.001), and non CKD+ group had the similar AKI incidence with normal function group (30.9% vs 30.0%, P=0.729). Multivariate logistic regression analysis revealed that non CKD-, CKD+ and CKD- were significant risk factors, whereas non CKD+ was not a significant risk factor for postoperative AKI. The SCr at discharge in non CKD+ subgroup was significantly lower than its preoperative SCr (1.4 ± 0.8 vs 1.7 ± 0.9 mg/dL, P = 0.020).Conclusions: For renal dysfunction patients with no CKD, the risk of postoperative AKI did not exist if the cardiac function improved after surgery. For CKD patients, the risk of postoperative AKI increase regardless whether the cardiac function improved or not.

scholarly journals Elevated Pulse Pressure Is Associated With Low Renal Function in Elderly Patients With Isolated Systolic Hypertension

Hypertension ◽  
2005 ◽  
Vol 45 (4) ◽  
pp. 586-591 ◽  
Author(s):  
Jacobien C. Verhave ◽  
Pierre Fesler ◽  
Guilhem du Cailar ◽  
Jean Ribstein ◽  
Michel E. Safar ◽  
...  
Keyword(s):  
Renal Function ◽  
Elderly Patients ◽  
Pulse Pressure ◽  
Systolic Hypertension ◽  
Isolated Systolic Hypertension

Long-term Effects of Remote Ischemic Preconditioning on Kidney Function in High-risk Cardiac Surgery Patients

2017 ◽  
Vol 126 (5) ◽  
pp. 787-798 ◽  
Author(s):  
Alexander Zarbock ◽  
John A. Kellum ◽  
Hugo Van Aken ◽  
Christoph Schmidt ◽  
Mira Küllmar ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Cardiac Surgery ◽  
High Risk ◽  
Renal Dysfunction ◽  
Ischemic Preconditioning ◽  
Absolute Risk ◽  
Kidney Injury ◽  
Absolute Risk Reduction ◽  
Remote Ischemic Preconditioning ◽  
Major Adverse Kidney Events

Abstract Background In a multicenter, randomized trial, the authors enrolled patients at high-risk for acute kidney injury as identified by a Cleveland Clinic Foundation score of 6 or more. The authors enrolled 240 patients at four hospitals and randomized them to remote ischemic preconditioning or control. The authors found that remote ischemic preconditioning reduced acute kidney injury in high-risk patients undergoing cardiac surgery. The authors now report on the effects of remote ischemic preconditioning on 90-day outcomes. Methods In this follow-up study of the RenalRIP trial, the authors examined the effect of remote ischemic preconditioning on the composite endpoint major adverse kidney events consisting of mortality, need for renal replacement therapy, and persistent renal dysfunction at 90 days. Secondary outcomes were persistent renal dysfunction and dialysis dependence in patients with acute kidney injury. Results Remote ischemic preconditioning significantly reduced the occurrence of major adverse kidney events at 90 days (17 of 120 [14.2%]) versus control (30 of 120 [25.0%]; absolute risk reduction, 10.8%; 95% CI, 0.9 to 20.8%; P = 0.034). In those patients who developed acute kidney injury after cardiac surgery, 2 of 38 subjects in the remote ischemic preconditioning group (5.3%) and 13 of 56 subjects in the control group (23.2%) failed to recover renal function at 90 days (absolute risk reduction, 17.9%; 95% CI, 4.8 to 31.1%; P = 0.020). Acute kidney injury biomarkers were also increased in patients reaching the major adverse kidney event endpoint compared to patients who did not. Conclusions Remote ischemic preconditioning significantly reduced the 3-month incidence of a composite endpoint major adverse kidney events consisting of mortality, need for renal replacement therapy, and persistent renal dysfunction in high-risk patients undergoing cardiac surgery. Furthermore, remote ischemic preconditioning enhanced renal recovery in patients with acute kidney injury.

Increase in pulse wavelength causes the systemic arterial tree to degenerate into a classical windkessel

2007 ◽  
Vol 293 (2) ◽  
pp. H1164-H1171 ◽  
Author(s):  
Mohammad W. Mohiuddin ◽  
Glen A. Laine ◽  
Christopher M. Quick
Keyword(s):  
Heart Rate ◽  
Pulse Pressure ◽  
Systolic Hypertension ◽  
Large Scale ◽  
Arterial Compliance ◽  
Peripheral Resistance ◽  
Arterial System ◽  
System Model ◽  
Isolated Systolic Hypertension ◽  
Arterial Tree

Two competing schools of thought ascribe vascular disease states such as isolated systolic hypertension to fundamentally different arterial system properties. The “windkessel school” describes the arterial system as a compliant chamber that distends and stores blood and relates pulse pressure to total peripheral resistance ( Rtot) and total arterial compliance ( Ctot). Inherent in this description is the assumption that arterial pulse wavelengths are infinite. The “transmission school,” assuming a finite pulse wavelength, describes the arterial system as a network of vessels that transmits pulses and relates pulse pressure to the magnitude, timing, and sites of pulse-wave reflection. We hypothesized that the systemic arterial system, described by the transmission school, degenerates into a windkessel when pulse wavelengths increase sufficiently. Parameters affecting pulse wavelength (i.e., heart rate, arterial compliances, and radii) were systematically altered in a realistic, large-scale, human arterial system model, and the resulting pressures were compared with those assuming a classical (2-element) windkessel with the same Rtot and Ctot. Increasing pulse wavelength as little as 50% (by changing heart rate −33.3%, compliances −55.5%, or radii +50%) caused the distributed arterial system model to degenerate into a classical windkessel ( r2 = 0.99). Model results were validated with analysis of representative human aortic pressure and flow waveforms. Because reported changes in arterial properties with age can markedly increase pulse wavelength, results suggest that isolated systolic hypertension is a manifestation of an arterial system that has degenerated into a windkessel, and thus arterial pressure is a function only of aortic flow, Rtot, and Ctot.

Abstract P482: Different Hemodynamic Phenotypes Of Isolated Systolic Hypertension In Adolescents

Hypertension ◽  
2017 ◽  
Vol 70 (suppl_1) ◽  
Author(s):  
Lukasz Obrycki ◽  
Anna Niemirska ◽  
Jedrzej Sarnecki ◽  
Zbigniew Kulaga ◽  
Mieczyslaw Litwin
Keyword(s):  
Blood Pressure ◽  
Pulse Pressure ◽  
Systolic Hypertension ◽  
Target Organ Damage ◽  
Intima Media Thickness ◽  
Left Ventricular ◽  
White Coat Hypertension ◽  
Control Group ◽  
Isolated Systolic Hypertension ◽  
Dominant Form

Objective: Isolated systolic hypertension (ISH) is a dominant form of primary hypertension (PH) in adolescents. Some of them present with normal central systolic blood pressure (cSBP), a phenomenon called spurious hypertension (sHT). The study was aimed to describe hemodynamics of PH in relation to cSBP, central pulse pressure (cPP) and target organ damage (TOD) in adolescents referred because of PH. Patients and Methods: In 267 children (59 girls; 14.9 ±2.6 years) referred with arterial hypertension, in whom secondary hypertension was excluded, 24 hour ABPM, left ventricular mass index (LVMi), carotid intima-media thickness (cIMT), pulse wave velocity (PWV), cSBP, cPP, cardiac index (CI) and stroke volume (SV) was assessed. 64 age and sex matched normotensive control children were control group. Results: 145 subjects had white coat hypertension (WCH) including 24 with ambulatory prehypertension (ambpreHT). Of 122 hypertensive pts, 39 had ambulatory hypertension (ambHT) and 83 severe ambulatory hypertension (severeHT). Normal cSBP was found in all WCH subject and 23 with ambpreHT. 39 of 122 (32%) hypertensive pts had sHT - 47.4% in those with ambHT and 26.5% with severeHT (p=0.0001). cIMT, LVMi, PWV, cSBP and cPP increased across blood pressure strata from normotension, through sHT to PH with elevated cSBP (all p<0.05). LVMi and cIMT correlated with cSBP (r = 0.220; p = 0.0007; r = 0.14; p = 0.04, respectively) and cPP (r = 0.274; p = 0.0001; r=0.202; p=0.002, respectively). 36 pts with left ventricular hypertrophy (LVH) had greater cPP (52 ±10 mmHg) in comparison with subjects without LVH (47 ±8 mmHg; p = 0.027). Regression analysis revealed cPP as the only predictor of LVMi (r 2 = 0.09, β = 0.143, p = 0.03). ROC area for predictors of LVH revealed similar area under curve for cSBP (0.585), cPP (0.618) and 24h systolic ABPM (0.612). Patients with sHT had greater amplification of pulse pressure than normotensive ones. CI and SV was lowest in normotensive controls, intermediate in sHT patients and highest in patients with elevated cSBP (p<0.05). Conclusions: sHT present with intermediate hemodynamic phenotype between normotension and sustained PH. cSBP and cPP differentiates patients with severeHT and TOD from patients with WCH, ambpreHT and ambHT without TOD

Fluid responsiveness in patients under mechanical ventilation and low tidal volume ventilation through the pulse pressure variation after tidal volume challenge in the post-operative cardiac surgery

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
D F C Azevedo ◽  
R M Viera De Melo ◽  
A C Cunha ◽  
L G S Brito ◽  
T Viana ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Tidal Volume ◽  
Fluid Responsiveness ◽  
Postoperative Period ◽  
Pulse Pressure ◽  
Pressure Variation ◽  
Predict Fluid Responsiveness ◽  
Predicted Body Weight ◽  
Volume Challenge ◽  
Excellent Accuracy

Abstract Background It is known that in the immediate postoperative period of cardiac surgery, strict control of hemodynamic variables and blood volume is necessary, since there is an imbalance between oxygen supply and consumption. Thus, the present study seeks to validate methods previously used in different clinical situations to predict fluid responsiveness, in the current scenario of the immediate postoperative period of cardiac surgery. Purpose To evaluate the influence of “tidal volume challenge” from 6 ml / kg to 8 ml / kg of the predicted body weight (PBW) in conjunction with the end expiratory occlusion test (EEOT) in the variation of pulse pressure to predict fluid responsiveness in the immediate postoperative period of cardiac surgery. Methodology This prospective study included 30 patients after cardiac surgery. Hemodynamic and ventilatory parameters were initially recorded in mechanical ventilation at 6 ml/kg and after tidial volume challenge and with the EEOT at 8 ml/kg of predicted body weight (PBW). After recorded the intervention data, there was a return to ventilation at 6 ml/kg and a saline infusion of 500 ml was performed for 15 minutes. Fluid responsiveness was defined for patients who had an increase of 10% or more in velocity time integral (VTI) by echocardiogram after volume expansion compared to baseline value. Multivariate analysis was used to identify independent predictors of fluid response status. Sensitivity and specificity analyzes were performed to determine the predictive precision of each parameter. Results The main result of our study is that, when the tidal volume is increased from 6 to 8 ml/kg of PBW, the relative increase in pulse pressure variation (%ΔPPV6–8) predicts with excellent accuracy responsiveness to fluids with cut-off values of 18.3%, with sensitivity of 92.9% and specificity of 84% (P=0.019). Although changing PPV6, EEOT6 and EEOT8 are not reliable in predicting fluid responsiveness, they still require additional calculations. PPV8 also discriminates between responders and non-responders; however, with sensitivity (78.6%) and specificity (66.6%) when the value found in the PPV8 is up 8.5, but without statistical significance (figure). Conclusion The challenge of tidal volume and its influence on the ΔPP variation has excellent accuracy to predict fluid responsiveness in the immediate postoperative period of cardiac surgery. EEOT did not present good accuracy to predict fluid responsiveness in patients in the immediate postoperative period of cardiac surgery. FUNDunding Acknowledgement Type of funding sources: None.

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