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Dale MacLaine T, Baker O, Omura M, Clarke C, Howell SJ, Burke D. Prospective comparison of two methods for assessing sarcopenia and interobserver agreement on retrospective CT images. Postgrad Med J 2023; 99:455-462. [PMID: 37294725 DOI: 10.1136/postgradmedj-2021-141301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 05/14/2022] [Indexed: 11/04/2022]
Abstract
PURPOSE OF THE STUDY To compare the relationships between two CT derived sarcopenia assessment methods, and compare their relationship with inter-rater and intrarater validations and colorectal surgical outcomes. STUDY DESIGN 157 CT scans were identified across Leeds Teaching Hospitals National Health Service Trust for patients undergoing colorectal cancer surgery. 107 had body mass index data available, required to determine sarcopenia status. This work explores the relationship between sarcopenia, as measured by both total cross sectional-area (TCSA) and psoas-area (PA) and surgical outcomes. All images were assessed for inter-rater and intrarater variability for both TCSA and PA methods of sarcopenia identification. The raters included a radiologist, an anatomist and two medical students. RESULTS Prevalence of sarcopenia was different when measured by PA (12.2%-22.4%) in comparison to TCSA (60.8%-70.1%). Strong correlation exists between muscle areas in both TCSA and PA measures, however, there were significant differences between methods after the application of method-specific cut-offs. There was substantial agreement for both intrarater and inter-rater comparisons for both TCSA and PA sarcopenia measures. Outcome data were available for 99/107 patients. Both TCSA and PA have poor association with adverse outcomes following colorectal surgery. CONCLUSIONS CT-determined sarcopenia can be identified by junior clinicians, those with anatomical understanding and radiologists. Our study identified sarcopenia to have a poor association with adverse surgical outcomes in a colorectal population. Published methods of identifying sarcopenia are not translatable to all clinical populations. Currently available cut-offs require refinement for potential confounding factors, to provide more valuable clinical information. WHAT IS ALREADY KNOWN ON THIS TOPIC? WHAT DOES THIS STUDY ADD? HOW MIGHT THIS STUDY AFFECT RESEARCH, PRACTICE OR POLICY?
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Affiliation(s)
| | - Oliver Baker
- John Goligher Colorectal Surgery Unit, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Miyuki Omura
- John Goligher Colorectal Surgery Unit, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Christopher Clarke
- GI & HPB Imaging and Intervention, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Simon J Howell
- Leeds Institute of Medical Research, University of Leeds, Leeds, UK
| | - Dermot Burke
- John Goligher Colorectal Surgery Unit, Leeds Teaching Hospitals NHS Trust, Leeds, UK
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2
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Zhao BC, Lei SH, Yang X, Zhang Y, Qiu SD, Liu WF, Li C, Liu KX. Assessment of prognostic value of intraoperative oliguria for postoperative acute kidney injury: a retrospective cohort study. Br J Anaesth 2020; 126:799-807. [PMID: 33342539 DOI: 10.1016/j.bja.2020.11.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 11/01/2020] [Accepted: 11/15/2020] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Oliguria is often viewed as a sign of renal hypoperfusion and an indicator for volume expansion during surgery. However, the prognostic association and the predictive utility of intraoperative oliguria for postoperative acute kidney injury (AKI) are unclear. METHODS We conducted a retrospective cohort study on patients undergoing major thoracic surgery in an academic hospital to assess the association of intraoperative oliguria with postoperative AKI and its predictive value. To contextualise our findings, we included our results in a meta-analysis of observational studies on the importance of oliguria during noncardiac surgery. RESULTS In our cohort study, 3862 patients were included; 205 (5.3%) developed AKI after surgery. Intraoperative urine output of 0.3 ml kg-1 h-1 was the optimal threshold for oliguria in multivariable analysis. Patients with oliguria had an increased risk of AKI (adjusted odds ratio: 2.60; 95% confidence interval: 1.24-5.05). However, intraoperative oliguria had a sensitivity of 5.9%, specificity of 98%, positive likelihood ratio of 2.74, and negative likelihood ratio of 0.96, suggesting poor predictive ability. Moreover, it did not improve upon the predictive performance of a multivariable model, based on discrimination and reclassification indices. Our findings were generally consistent with the results of a systematic review and meta-analysis, including six additional studies. CONCLUSIONS Intraoperative oliguria has moderate association with, but poor predictive ability for, postoperative AKI. It remains of clinical interest as a risk factor potentially modifiable to interventions.
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Affiliation(s)
- Bing-Cheng Zhao
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shao-Hui Lei
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xiao Yang
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ya Zhang
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shi-Da Qiu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wei-Feng Liu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Cai Li
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Ke-Xuan Liu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
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3
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Zhao BC, Liu WF, Lei SH, Zhou BW, Yang X, Huang TY, Deng QW, Xu M, Li C, Liu KX. Prevalence and prognostic value of elevated troponins in patients hospitalised for coronavirus disease 2019: a systematic review and meta-analysis. J Intensive Care 2020; 8:88. [PMID: 33292649 PMCID: PMC7682759 DOI: 10.1186/s40560-020-00508-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 11/15/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND The clinical significance of cardiac troponin measurement in patients hospitalised for coronavirus disease 2019 (covid-19) is uncertain. We investigated the prevalence of elevated troponins in these patients and its prognostic value for predicting mortality. METHODS Studies were identified by searching electronic databases and preprint servers. We included studies of hospitalised covid-19 patients that reported the frequency of troponin elevations above the upper reference limit and/or the association between troponins and mortality. Meta-analyses were performed using random-effects models. RESULTS Fifty-one studies were included. Elevated troponins were found in 20.8% (95% confidence interval [CI] 16.8-25.0 %) of patients who received troponin test on hospital admission. Elevated troponins on admission were associated with a higher risk of subsequent death (risk ratio 2.68, 95% CI 2.08-3.46) after adjusting for confounders in multivariable analysis. The pooled sensitivity of elevated admission troponins for predicting death was 0.60 (95% CI 0.54-0.65), and the specificity was 0.83 (0.77-0.88). The post-test probability of death was about 42% for patients with elevated admission troponins and was about 9% for those with non-elevated troponins on admission. There was significant heterogeneity in the analyses, and many included studies were at risk of bias due to the lack of systematic troponin measurement and inadequate follow-up. CONCLUSION Elevated troponins were relatively common in patients hospitalised for covid-19. Troponin measurement on admission might help in risk stratification, especially in identifying patients at high risk of death when troponin levels are elevated. High-quality prospective studies are needed to validate these findings. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42020176747.
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Affiliation(s)
- Bing-Cheng Zhao
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Ave N, Guangzhou, 510515, China
| | - Wei-Feng Liu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Ave N, Guangzhou, 510515, China
| | - Shao-Hui Lei
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Ave N, Guangzhou, 510515, China
| | - Bo-Wei Zhou
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Ave N, Guangzhou, 510515, China
| | - Xiao Yang
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Ave N, Guangzhou, 510515, China
| | - Tong-Yi Huang
- Department of Medical Ultrasound, Institute of Diagnostic and Interventional Ultrasound, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Qi-Wen Deng
- Department of Anaesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Miao Xu
- Department of Anaesthesiology, The First Affiliated Hospital, Sun Yat-Sen University, 58 Zhongshan 2nd Road, Guangzhou, 510080, China
| | - Cai Li
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Ave N, Guangzhou, 510515, China
| | - Ke-Xuan Liu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, 1838 Guangzhou Ave N, Guangzhou, 510515, China.
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De Hert SG, Lurati Buse GA. Cardiac Biomarkers for the Prediction and Detection of Adverse Cardiac Events After Noncardiac Surgery: A Narrative Review. Anesth Analg 2020; 131:187-195. [DOI: 10.1213/ane.0000000000004711] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Zhao BC, Liu WF, Deng QW, Zhuang PP, Liu J, Li C, Liu KX. Meta-analysis of preoperative high-sensitivity cardiac troponin measurement in non-cardiac surgical patients at risk of cardiovascular complications. Br J Surg 2020; 107:e81-e90. [PMID: 31903596 DOI: 10.1002/bjs.11305] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 06/03/2019] [Accepted: 06/07/2019] [Indexed: 12/19/2022]
Abstract
Abstract
Background
Patients undergoing major non-cardiac surgery are at risk of cardiovascular complications. Raised levels of high-sensitivity troponin are frequently detected before operation among these patients. However, the prognostic value of high-sensitivity troponin in predicting postoperative outcomes remains unclear.
Methods
A systematic search of PubMed, Embase and Science Citation Index Expanded was undertaken for observational studies published before March 2018 that reported associations between raised preoperative levels of high-sensitivity troponin and postoperative major adverse cardiac events and/or mortality after non-cardiac surgery. Meta-analyses were performed, where possible, using random-effects models.
Results
Seven cohort studies with a total of 4836 patients were included. A raised preoperative high-sensitivity troponin level was associated with a higher risk of short-term major adverse cardiac events (risk ratio (RR) 2·92, 95 per cent c.i. 1·96 to 4·37; I2 = 82·6 per cent), short-term mortality (RR 5·39, 3·21 to 9·06; I2 = 0 per cent) and long-term mortality (RR 2·90, 1·83 to 4·59, I2 = 74·2 per cent). The addition of preoperative high-sensitivity troponin measurement provided improvements in cardiovascular risk discrimination (increase in C-index ranged from 0·058 to 0·109) and classification (quantified by continuous net reclassification improvement) compared with Lee's Revised Cardiac Risk Index alone. There was substantial heterogeneity and inadequate risk stratification analysis in the included studies.
Conclusion
Raised preoperative levels of high-sensitivity troponin appear to represent a risk for postoperative major adverse cardiac events and mortality. Further study is required before high-sensitivity troponin can be used to predict risk stratification in routine clinical practice.
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Affiliation(s)
- B-C Zhao
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - W-F Liu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Q-W Deng
- Department of Anaesthesiology, First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - P-P Zhuang
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - J Liu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - C Li
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - K-X Liu
- Department of Anaesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Zwissler B. Preoperative evaluation of adult patients before elective, noncardiothoracic surgery. Anaesthesist 2017; 68:25-39. [DOI: 10.1007/s00101-017-0376-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Kopec M, Duma A, Helwani MA, Brown J, Brown F, Gage BF, Gibson DW, Miller JP, Novak E, Jaffe AS, Apple FS, Scott MG, Nagele P. Improving Prediction of Postoperative Myocardial Infarction With High-Sensitivity Cardiac Troponin T and NT-proBNP. Anesth Analg 2017; 124:398-405. [PMID: 28002165 DOI: 10.1213/ane.0000000000001736] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND This study sought to determine whether preoperatively measured high-sensitivity cardiac troponin T (hs-cTnT) and N-terminal pro-brain natriuretic peptide (NT-proBNP) improve cardiac risk prediction in patients undergoing major noncardiac surgery compared with the standard risk indices. METHODS In this ancillary study to the Vitamins in Nitrous Oxide trial, patients were included who had preoperative hs-cTnT and NT-proBNP measured (n = 572). Study outcome was the incidence of postoperative myocardial infarction (MI) within the first 3 postoperative days. hs-cTnT was considered elevated if >14 ng/L and NT-proBNP if >300 ng/L. Additional cutoff values were investigated on the basis of receiver operating characteristic statistics. Biomarker risk prediction was compared with Lee's Revised Cardiac Risk Index (RCRI) with the use of standard methods and net reclassification index. RESULTS The addition of hs-cTnT (>14 ng/L) and NT-proBNP (>300 ng/L) to RCRI significantly improved the prediction of postoperative MI (event rate 30/572 [5.2%], Area under the receiver operating characteristic curve increased from 0.590 to 0.716 with a 0.66 net reclassification index [95% confidence interval 0.32-0.99], P < .001). The use of 108 ng/L as a cutoff for NT-proBNP improved sensitivity compared with 300 ng/L (0.87 vs 0.53). Sensitivity, specificity, positive, and negative predictive value for hs-cTnT were 0.70, 0.60, 0.09, and 0.97 and for NT-proBNP were 0.53, 0.68, 0.08, and 0.96. CONCLUSIONS The addition of cardiac biomarkers hs-cTnT and NT-proBNP to RCRI improves the prediction of adverse cardiac events in the immediate postoperative period after major noncardiac surgery. The high negative predictive value of preoperative hs-cTnT and NT-proBNP suggest usefulness as a "rule-out" test to confirm low risk of postoperative MI.
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Affiliation(s)
- Michael Kopec
- From the *Division of Clinical and Translational Research, Department of Anesthesiology, Washington University School of Medicine in St. Louis, St. Louis, Missouri; †Department of Internal Medicine, ‡Division of Biostatistics, §Cardiovascular Division, Department of Internal Medicine, and ‖Division of Core Clinical Laboratory Services, Department of Laboratory Medicine and Pathology, Mayo Clinic and Medical School, Rochester, Minnesota; ¶Department of Laboratory Medicine & Pathology, Hennepin County Medical Center, University of Minnesota School of Medicine, Minneapolis, Minnesota; and #Department of Pathology & Immunology (MGS), Mayo Clinic and Medical School, Rochester, Minnesota
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Kanakaraj M, Yates DR, Wilson RJT, Baroni ML, Davies SJ. Prognostic Markers of Outcome in Patients Undergoing Infra-inguinal Revascularisation: A Prospective Observational Pilot Study. Eur J Vasc Endovasc Surg 2017. [PMID: 28625356 DOI: 10.1016/j.ejvs.2017.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVES The aim was to investigate whether cardiopulmonary exercise testing (CPET) variables derived from cycle and arm ergonometry correlate, and whether CPET variables and pre-operative N-terminal pro-brain natriuretic peptide (NT-proBNP) have prognostic significance and if the combination of the two has incremental value. METHODS A prospective observational pilot study was conducted; 70 patients who underwent infra-inguinal bypass surgery were recruited. Pre-operatively subjects underwent CPET with both arm and leg ergonometry, to measure peak oxygen consumption, anaerobic threshold (AT), and ventilatory equivalents. In addition pre-operative serum samples of NT-proBNP were obtained. The primary endpoint was 1 year all-cause mortality; in addition, data were collected on complications, morbidity, length of stay, and major adverse cardiac events (MACE). RESULTS The 1 year mortality rate was 6%, the overall complications rate was 23%, and the combined incidence of MACE and 1 year mortality was 10%. Cycle ergonometry peak VO2 14 mL/kg/min (RR 5.5, 95% CI 1.4-22.4, p = .007) and AT < 10mL/kg/min (RR 3.0, 95% CI 1.1-7.0, p = .03) were predictors of post-operative complications. Pre-operative NT-proBNP > 320 ng/L (RR 18, 95% CI 2.5-140 p = .0003) was the sole predictor of 1 year mortality or MACE. CONCLUSION The measurement of pre-operative NT-proBNP in peripheral vascular disease patients undergoing infra-inguinal bypass can predict 1 year mortality and MACE. CPET variables from cycle ergonometry are predictors of post-operative complications in this patient group.
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Affiliation(s)
- M Kanakaraj
- Department of Anaesthesia and Intensive Care, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - D R Yates
- Department of Anaesthesia and Intensive Care, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - R J T Wilson
- Department of Anaesthesia and Intensive Care, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - M L Baroni
- Department of Vascular Surgery, York Teaching Hospitals NHS Foundation Trust, York, UK
| | - S J Davies
- Department of Anaesthesia and Intensive Care, York Teaching Hospitals NHS Foundation Trust, York, UK.
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9
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Zwissler B. Präoperative Evaluation erwachsener Patienten vor elektiven, nicht Herz-Thorax-chirurgischen Eingriffen. Anaesthesist 2017; 66:442-458. [DOI: 10.1007/s00101-017-0321-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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10
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Bishop DG, Cairns C, Grobbelaar M, Rodseth RN. Heart rate variability as a predictor of hypotension following spinal for elective caesarean section: a prospective observational study. Anaesthesia 2017; 72:603-608. [DOI: 10.1111/anae.13813] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2016] [Indexed: 11/29/2022]
Affiliation(s)
- D. G. Bishop
- Metropolitan Department of Anaesthetics, Critical Care and Pain Management; University of KwaZulu-Natal; Pietermaritzburg South Africa
| | - C. Cairns
- Metropolitan Department of Anaesthetics, Critical Care and Pain Management; University of KwaZulu-Natal; Pietermaritzburg South Africa
| | - M. Grobbelaar
- Metropolitan Department of Anaesthetics, Critical Care and Pain Management; University of KwaZulu-Natal; Pietermaritzburg South Africa
| | - R. N. Rodseth
- Metropolitan Department of Anaesthetics, Critical Care and Pain Management; University of KwaZulu-Natal; Pietermaritzburg South Africa
- Outcomes Research Consortium; Cleveland Ohio USA
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Malhotra AK, Ramakrishna H. N-terminal pro B type natriuretic peptide in high cardiovascular-risk patients for noncardiac surgery: What is the current prognostic evidence? Ann Card Anaesth 2016; 19:314-20. [PMID: 27052075 PMCID: PMC4900342 DOI: 10.4103/0971-9784.179636] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
As millions of surgical procedures are performed worldwide on an aging population with multiple comorbidities, accurate and simple perioperative risk stratification is critical. The cardiac biomarker, brain natriuretic peptide (BNP), has generated considerable interest as it is easy to obtain and appears to have powerful predictive and prognostic capabilities. BNP is currently being used to guide medical therapy for heart failure and has been added to several algorithms for perioperative risk stratification. This review examines the current evidence for the use of BNP in the perioperative period in patients who are at high-cardiovascular risk for noncardiac surgery. In addition, we examined the use of BNP in patients with pulmonary embolism and left ventricular assist devices. The available data strongly suggest that the addition of BNP to perioperative risk calculators is beneficial; however, whether this determination of risk will impact outcomes, remains to be seen.
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Affiliation(s)
- Anita K Malhotra
- Department of Anesthesiology, Penn State Milton S. Hershey Medical Center, Hershey, PA, USA
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Abstract
Routine preoperative testing is not cost-effective, because it is unlikely to identify significant abnormalities. Abnormal findings from routine testing are more likely to be false positive, are costly to pursue, introduce a new risk, increase the patient's anxiety, and are inconvenient to the patient. Abnormal findings rarely alter the surgical or anesthetic plan, and there is usually no association between perioperative complications and abnormal laboratory results. Incidental findings and false positive results may lead to increased hospital visits and admissions. Preoperative testing needs to be done based on a targeted history and physical examination and the type of surgery.
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Affiliation(s)
- Matthias Bock
- Department of Anesthesia and Intensive Care Medicine, Central Hospital, Via Lorenz Boehler 5, Bolzano 39100, Italy; Department of Anesthesiology, Perioperative Medicine and Intensive Care, Paracelsus Medical University, Muellner Hauptrstrasse 48, Salzburg 5020, Austria
| | - Gerhard Fritsch
- Department of Anesthesiology, Perioperative Medicine and Intensive Care, Paracelsus Medical University, Muellner Hauptrstrasse 48, Salzburg 5020, Austria; Department of Anesthesiology and Intensive Care, UKH Lorenz Boehler, Donaueschingerstrasse 3, Vienna 1220, Austria
| | - David L Hepner
- Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02459, USA.
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Koracevic GP. Are we consistent in using 14 different units for brain natriuretic peptide instead of ng/L? Am J Emerg Med 2016; 34:750-1. [PMID: 26897708 DOI: 10.1016/j.ajem.2016.01.031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 01/25/2016] [Indexed: 11/19/2022] Open
Affiliation(s)
- Goran P Koracevic
- Department of Cardiology, Clinical Centre and Medical Faculty, University of Nis, Nis, Serbia.
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Perioperative B-type Natriuretic Peptide/N-terminal pro-B-type Natriuretic Peptide. Anesthesiology 2015; 123:246-8. [DOI: 10.1097/aln.0000000000000729] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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