scholarly journals Associations of Intraoperative Radial Arterial Systolic, Diastolic, Mean, and Pulse Pressures with Myocardial and Acute Kidney Injury after Noncardiac Surgery

2020 ◽  
Vol 132 (2) ◽  
pp. 291-306 ◽  
Author(s):  
Sanchit Ahuja ◽  
Edward J. Mascha ◽  
Dongsheng Yang ◽  
Kamal Maheshwari ◽  
Barak Cohen ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Acute Kidney Injury ◽  
Pulse Pressure ◽  
Renal Injury ◽  
Myocardial Injury ◽  
Kidney Injury ◽  
Noncardiac Surgery ◽  
Complex Signal ◽  
Discriminative Ability ◽  
Increased Risk

Abstract Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New Background Arterial pressure is a complex signal that can be characterized by systolic, mean, and diastolic components, along with pulse pressure (difference between systolic and diastolic pressures). The authors separately evaluated the strength of associations among intraoperative pressure components with myocardial and kidney injury after noncardiac surgery. Methods The authors included 23,140 noncardiac surgery patients at Cleveland Clinic who had blood pressure recorded at 1-min intervals from radial arterial catheters. The authors used univariable smoothing and multivariable logistic regression to estimate probabilities of each outcome as function of patients’ lowest pressure for a cumulative 5 min for each component, comparing discriminative ability using C-statistics. The authors further assessed the association between outcomes and both area and minutes under derived thresholds corresponding to the beginning of increased risk for the average patient. Results Out of 23,140 patients analyzed, myocardial injury occurred in 6.1% and acute kidney injury in 8.2%. Based on the lowest patient blood pressure experienced for greater than or equal to 5 min, estimated thresholds below which the odds of myocardial or kidney injury progressively increased (slope P < 0.001) were 90 mmHg for systolic, 65 mmHg for mean, 50 mmHg for diastolic, and 35 mmHg for pulse pressure. Weak discriminative ability was noted between the pressure components, with univariable C-statistics ranging from 0.55 to 0.59. Area under the curve in the highest (deepest) quartile of exposure below the respective thresholds had significantly higher odds of myocardial injury after noncardiac surgery and acute kidney injury compared to no exposure for systolic, mean, and pulse pressure (all P < 0.001), but not diastolic, after adjusting for confounding. Conclusions Systolic, mean, and pulse pressure hypotension were comparable in their strength of association with myocardial and renal injury. In contrast, the relationship with diastolic pressure was poor. Baseline factors were much more strongly associated with myocardial and renal injury than intraoperative blood pressure, but pressure differs in being modifiable.

scholarly journals Analysis of intraoperative modifiable factors to prevent acute kidney injury after elective noncardiac surgery: intraoperative hypotension and crystalloid administration related to acute kidney injury

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Yasuma Kobayashi ◽  
Kazue Yamaoka
Keyword(s):  
Blood Pressure ◽  
Acute Kidney Injury ◽  
Kidney Injury ◽  
Noncardiac Surgery ◽  
Intraoperative Hypotension ◽  
Increased Risk ◽  
Modifiable Factors ◽  
Blood Pressure Range ◽  
Crystalloid Administration ◽  
Administration Protocol

Abstract Background The optimal intraoperative blood pressure range and crystalloid administration protocol for the prevention of acute kidney injury (AKI) after elective noncardiac surgery remain unknown. Methods This single-center retrospective cohort study included 6296 patients aged ≥ 50 years who had undergone elective noncardiac surgery under general anesthesia. We evaluated the relationship between duration of intraoperative hypotension and AKI. To assess whether the effects of crystalloid administration differed according to baseline estimated glomerular filtration rate (eGFR), we examined the interaction between intraoperative crystalloid administration and eGFR. We calculated univariable and multivariable adjusted odds ratios (ORs) and their 95% confidence intervals (95% CIs) for the prevalence of AKI. Results AKI occurred in 431 (6.8%) patients and was associated with intraoperative hypotension. Effects of intraoperative crystalloid administration differed significantly according to baseline eGFR. Increased risk of AKI was noted in patients with eGFR ≤45 ml min−1 1.73m−2 who were managed with restrictive or liberal crystalloid administration [OR 4.79 (95% CI 3.10 to 7.32) and 6.43 (95% CI 2.23 to 16.03), respectively] as opposed to those with eGFR >45 ml min−1 1.73m−2 who were managed with moderately restrictive crystalloid administration. Conclusions Our findings suggest that anesthesiologists should avoid intraoperative hypotension as well as either restrictive or liberal (as opposed to moderately restrictive) crystalloid administration in patients with decreased eGFR. Intraoperative blood pressure and crystalloid administration protocol are major modifiable factors that must be optimized to prevent postoperative AKI.

scholarly journals Perioperative Blood Pressure Management

2020 ◽  
Author(s):  
Bernd Saugel ◽  
Daniel I. Sessler
Keyword(s):  
Blood Pressure ◽  
Acute Kidney Injury ◽  
Myocardial Injury ◽  
Kidney Injury ◽  
Noncardiac Surgery ◽  
Pressure Management ◽  
Blood Pressure Management ◽  
Intraoperative Hypotension

Intraoperative hypotension is common during noncardiac surgery and associated with myocardial injury, acute kidney injury, and death. Postoperative hypotension is also common and associated with myocardial injury and death, and largely missed by conventional monitoring.

scholarly journals Association of Intraoperative Hypotension with Acute Kidney Injury after Noncardiac Surgery in Patients Younger than 60 Years Old

2019 ◽  
Vol 44 (2) ◽  
pp. 211-221 ◽  
Author(s):  
Yongzhong Tang ◽  
Chaonan Zhu ◽  
Jiabin Liu ◽  
Anli Wang ◽  
Kaiming Duan ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Primary Outcome ◽  
Kidney Injury ◽  
Noncardiac Surgery ◽  
Intraoperative Hypotension ◽  
Outcome Relationship ◽  
Increased Risk ◽  
Interaction Factor ◽  
Surgical Duration ◽  
Postoperative Aki

Background/Aims: Intraoperative hypotension (IOH) may be associated with surgery-related acute kidney injury (AKI). However, the duration of hypotension that triggers AKI is poorly understood. The incidence of AKI with various durations of IOH and mean arterial pressures (MAPs) was investigated. Materials: A retrospective cohort study of 4,952 patients undergoing noncardiac surgery (2011 to 2016) with MAP monitoring and a length of stay of one or more days was performed. The exclusion criteria were a preoperative estimated glomerular filtration (eGFR) ≤60 mL min–1 1.73 m2–1, a preoperative MAP less than 65 mm Hg, dialysis dependence, urologic surgery, age older than 60 years, and a surgical duration of less than 60 min. The primary exposure was IOH, and the primary outcome was AKI (50% or 0.3 mg dL–1 increase in creatinine) during the first 7 postoperative days. Multivariable logistic regression was used to model the exposure-outcome relationship. Results: AKI occurred in 186 (3.76%) noncardiac surgery patients. The adjusted odds ratio for surgery-related AKI for a MAP of less than 55 mm Hg was 14.11 (95% confidence interval: 5.02–39.69) for an exposure of more than 20 min. Age was not an interaction factor between AKI and IOH. Conclusion: There was a considerably increased risk of postoperative AKI when intraoperative MAP was less than 55 mm Hg for more than 10 min. Strict blood pressure management is recommended even for patients younger than 60 years old.

scholarly journals Management of Presumed Acute Kidney Injury during Hypertensive Therapy: Stay Calm and Carry on?

2020 ◽  
Vol 51 (2) ◽  
pp. 108-115
Author(s):  
Teresa K. Chen ◽  
Chirag R. Parikh
Keyword(s):  
Blood Pressure ◽  
Acute Kidney Injury ◽  
Serum Creatinine ◽  
Blood Pressure Control ◽  
Kidney Injury ◽  
Pressure Control ◽  
Intensive Treatment ◽  
Urinary Biomarkers ◽  
Increased Risk ◽  
Intensive Blood Pressure

Background: Recent studies have demonstrated that intensive blood pressure control is associated with improved cardiovascular outcomes. Acute kidney injury (AKI), however, was more common in the intensive treatment group prompting concern in the nephrology community. Summary: Clinical trials on hypertension control have traditionally defined AKI by changes in serum creatinine. However, serum creatinine has several inherent limitations as a marker of kidney injury, with various factors influencing its production, secretion, and elimination. Urinary biomarkers of kidney injury and repair have the potential to provide insight on the presence and phenotype of kidney injury. In both the Systolic Blood Pressure Intervention Trial and the Action to Control Cardiovascular Risk in Diabetes study, urinary biomarkers have suggested that the increased risk of AKI associated with intensive treatment was due to hemodynamic changes rather than structural kidney injury. As such, clinicians who encounter rises in serum creatinine during intensification of hypertension therapy should “stay calm and carry on.” Alternative explanations for serum creatinine elevation should be considered and addressed if appropriate. When the rise in serum creatinine is limited, particularly if albuminuria is stable or improving, intensive blood pressure control should be continued for its potential long-term benefits. Key Messages: Increases in serum creatinine during intensification of blood pressure control may not necessarily reflect kidney injury. Clinicians should evaluate for other contributing factors before stopping therapy. Urinary biomarkers may address limitations of serum creatinine as a marker of kidney injury.

Abstract WMP100: Excessive Blood Pressure Reduction Increases the Risk of Acute Kidney Injury After Intracerebral Hemorrhage

Stroke ◽  
2020 ◽  
Vol 51 (Suppl_1) ◽  
Author(s):  
Kenichi Irie ◽  
Kaori Miwa ◽  
Kanta Tanaka ◽  
Hajime Ikenouchi ◽  
Masafumi Ihara ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Acute Kidney Injury ◽  
Intracerebral Hemorrhage ◽  
Characteristic Curve ◽  
Blood Pressure Reduction ◽  
Multivariable Analysis ◽  
Kidney Injury ◽  
Hospital Death ◽  
Stroke Registry ◽  
Increased Risk

Background: Elevated blood pressure (BP) in the first 24 hours of admission of acute intracerebral hemorrhage (ICH) has been the focus of intensive therapeutic investigation, although early intensive BP lowering addresses a concern about development of acute kidney injury (AKI). However, it is unclear as to the effect of BP measure including the absolute BP reduction and increased BP variability on AKI in patients with acute ICH. Methods: We retrieved data of consecutive patients with acute ICH from our prospective stroke registry between July 2015 and August 2017. We excluded patients with preexisting end-stage renal disease or in-hospital death within 24 hours. The primary outcome was AKI within 7days after admission defined using the AKI Network criteria. We recorded BP on emergency department arrival and for every 1 hour from 1 to 24 hours after admission (25 measurements). We measured mean systolic BP (SBP) and maximum minus minimum SBP within both 12 hours and 24 hours, and also quantified SBP variabilities (SBPV) including standard deviation, coefficient of variation, successive variation, and average real variability. Results: Among 361 patients with ICH (age 72.7±12.8, male 55%, non-lobar 76%), 31 (9%) developed AKI. For all SBP measure, the 12-hour SBP reduction was associated with the increased risk of AKI in multivariable analysis (odds ratio [per10 mmHg increase] 1.30; 95% CI 1.10-1.35). There was no significant association between the SBP variability and risk of AKI. The area under the receiver operating characteristic curve of the 12-hour SBP reduction for predicting AKI was 0.75. The association between the 12-hour SBP reduction and AKI was not modified by preexisting chronic kidney disease (interaction P=0.40). Conclusion: Early BP reduction in the first 12 hours of admission contributed to the risk of AKI in acute ICH. This may have clinical implication to avoid excess absolute BP reduction in patients with acute ICH.

scholarly journals Baseline Pulse Pressure, Acute Kidney Injury, and Mortality After Noncardiac Surgery

2016 ◽  
Vol 123 (6) ◽  
pp. 1480-1489 ◽  
Author(s):  
Adriana D. Oprea ◽  
Frederick W. Lombard ◽  
Wen-Wei Liu ◽  
William D. White ◽  
Jörn A. Karhausen ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Pulse Pressure ◽  
Kidney Injury ◽  
Noncardiac Surgery

P6383Cardiac output during targeted temperature management and renal function after out-of-hospital cardiac arrest

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
J Grand ◽  
C Hassager ◽  
J Bro-Jeppesen ◽  
M Wanscher ◽  
J Kjaergaard
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Acute Kidney Injury ◽  
Cardiac Index ◽  
Renal Injury ◽  
Kidney Injury ◽  
Targeted Temperature Management ◽  
Temperature Management ◽  
Research Fund ◽  
Hospital Cardiac Arrest

Abstract Background After resuscitation from out-of-hospital cardiac arrest (OHCA), renal injury and hemodynamic instability are common. Low blood pressure during targeted temperature management (TTM) is associated with acute renal injury (AKI). The aim of this study is to test the hypothesis, that low cardiac output during TTM is associated with acute kidney injury after OHCA. Methods Single-center substudy of 171 patients included in the prospective, randomized TTM-trial. Hemodynamic evaluation was performed with serial measurements by pulmonary artery catheter. Mean arterial pressure ≥65 mmHg and central venous pressure of 10 to 15 mmHg were hemodynamic treatment goals. Acute kidney injury (AKI) was the primary endpoint and was defined according to the KDIGO-criteria. Differences between groups were tested by repeated measurements mixed models. Measurements and main results Of 152 patients with available hemodynamic data, 49 (32%) had AKI and 21 (14%) had AKI with need for renal replacement therapy (RRT) in the first three days. At admission, cardiac index was higher in the AKI-group (mean (confidence interval): 2.6 (2.2–3.0) L/min/m2 versus 2.2 (2.0–2.3) L/min/m2, p=0.003). During 24 hours of targeted temperature management, patients with AKI had increased heart rate (11 beats/min, pgroup<0.0001) and increased lactate (1 mmol/L, pgroup<0.0001) compared to patients without AKI. However, there was no overall difference in cardiac index (pgroup = 0.25) (Figure). In multivariate models, adjusting for potential confounders including targeted temperature, mean arterial pressure (odds ratio: 0.69 (0.50–0.96) per 5 mmHg increase, p=0.03), heart rate (1.04 (1.01–1.08) per beat/min increase, p=0.01) and lactate (1.59 (1.14–2.2) per mmol/L increase, p=0.006) were independently associated with AKI, but cardiac index remained unrelated with AKI. Figure 1 Conclusions Blood pressure, heart rate and lactate, but not cardiac output, during 24 hours of targeted temperature management were associated with renal injury in comatose OHCA-patients. Acknowledgement/Funding The research fund Gangstedfonden and the Research fund of Rigshospitalet has supported this study with unrestricted salary in Dr. Grand's PhD project.

scholarly journals Intraoperative Hypotension and Acute Kidney Injury after Noncardiac Surgery in Infants and Children: A Retrospective Cohort Analysis

2021 ◽  
Author(s):  
Nadav Y. Schacham ◽  
Surendrasingh Chhabada ◽  
Proshad N. Efune ◽  
Xuan Pu ◽  
Liu Liu ◽  
...  
Keyword(s):  
Acute Kidney Injury ◽  
Renal Injury ◽  
Retrospective Cohort ◽  
Cohort Analysis ◽  
Tertiary Care ◽  
Kidney Injury ◽  
Noncardiac Surgery ◽  
Specific Reference ◽  
Primary Concern ◽  
Intraoperative Hypotension

Background Age- and sex-specific reference nomograms for intraoperative blood pressure have been published, but they do not identify harm thresholds. The authors therefore assessed the relationship between various absolute and relative characterizations of hypotension and acute kidney injury in children having noncardiac surgery. Methods The authors conducted a retrospective cohort study using electronic data from two tertiary care centers. They included inpatients 18 yr or younger who had noncardiac surgery with general anesthesia. Postoperative renal injury was defined using the Kidney Disease Improving Global Outcomes definitions, based on serum creatinine concentrations. The authors evaluated potential renal harm thresholds for absolute lowest intraoperative mean arterial pressure (MAP) or largest MAP reduction from baseline maintained for a cumulative period of 5 min. Separate analyses were performed in children aged 2 yr or younger, 2 to 6 yr, 6 to 12 yr, and 12 to 18 yr. Results Among 64,412 children who had noncardiac surgery, 4,506 had creatinine assessed preoperatively and postoperatively. The incidence of acute kidney injury in this population was 11% (499 of 4,506): 17% in children under 6 yr old, 11% in children 6 to 12 yr old, and 6% in adolescents, which is similar to the incidence reported in adults. There was no association between lowest cumulative MAP sustained for 5 min and postoperative kidney injury. Similarly, there was no association between largest cumulative percentage MAP reduction and postoperative kidney injury. The adjusted estimated odds for kidney injury was 0.99 (95% CI, 0.94 to 1.05) for each 5-mmHg decrease in lowest MAP and 1.00 (95% CI, 0.97 to 1.03) for each 5% decrease in largest MAP reduction from baseline. Conclusions In distinct contrast to adults, the authors did not find any association between intraoperative hypotension and postoperative renal injury. Avoiding short periods of hypotension should not be the clinician’s primary concern when trying to prevent intraoperative renal injury in pediatric patients. Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New

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