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Dietrich M, Özdemir B, Gruneberg D, Petersen C, Studier-Fischer A, von der Forst M, Schmitt FCF, Fiedler MO, Nickel F, Müller-Stich BP, Brenner T, Weigand MA, Uhle F, Schmidt K. Hyperspectral Imaging for the Evaluation of Microcirculatory Tissue Oxygenation and Perfusion Quality in Haemorrhagic Shock: A Porcine Study. Biomedicines 2021; 9:1829. [PMID: 34944645 PMCID: PMC8698916 DOI: 10.3390/biomedicines9121829] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/27/2021] [Accepted: 11/29/2021] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND The ultimate goal of haemodynamic therapy is to improve microcirculatory tissue and organ perfusion. Hyperspectral imaging (HSI) has the potential to enable noninvasive microcirculatory monitoring at bedside. METHODS HSI (Tivita® Tissue System) measurements of tissue oxygenation, haemoglobin, and water content in the skin (ear) and kidney were evaluated in a double-hit porcine model of major abdominal surgery and haemorrhagic shock. Animals of the control group (n = 7) did not receive any resuscitation regime. The interventional groups were treated exclusively with either crystalloid (n = 8) or continuous norepinephrine infusion (n = 7). RESULTS Haemorrhagic shock led to a drop in tissue oxygenation parameters in all groups. These correlated with established indirect markers of tissue oxygenation. Fluid therapy restored tissue oxygenation parameters. Skin and kidney measurements correlated well. High dose norepinephrine therapy deteriorated tissue oxygenation. Tissue water content increased both in the skin and the kidney in response to fluid therapy. CONCLUSIONS HSI detected dynamic changes in tissue oxygenation and perfusion quality during shock and was able to indicate resuscitation effectivity. The observed correlation between HSI skin and kidney measurements may offer an estimation of organ oxygenation impairment from skin monitoring. HSI microcirculatory monitoring could open up new opportunities for the guidance of haemodynamic management.
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Dietrich M, Marx S, von der Forst M, Bruckner T, Schmitt FCF, Fiedler MO, Nickel F, Studier-Fischer A, Müller-Stich BP, Hackert T, Brenner T, Weigand MA, Uhle F, Schmidt K. Hyperspectral imaging for perioperative monitoring of microcirculatory tissue oxygenation and tissue water content in pancreatic surgery - an observational clinical pilot study. Perioper Med (Lond) 2021; 10:42. [PMID: 34847953 PMCID: PMC8638177 DOI: 10.1186/s13741-021-00211-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 07/30/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Hyperspectral imaging (HSI) could provide extended haemodynamic monitoring of perioperative tissue oxygenation and tissue water content to visualize effects of haemodynamic therapy and surgical trauma. The objective of this study was to assess the capacity of HSI to monitor skin microcirculation and possible relations to perioperative organ dysfunction in patients undergoing pancreatic surgery. METHODS The hyperspectral imaging TIVITA® Tissue System was used to evaluate superficial tissue oxygenation (StO2), deeper layer tissue oxygenation (near-infrared perfusion index (NPI)), haemoglobin distribution (tissue haemoglobin index (THI)) and tissue water content (tissue water index (TWI)) in 25 patients undergoing pancreatic surgery. HSI parameters were measured before induction of anaesthesia (t1), after induction of anaesthesia (t2), postoperatively before anaesthesia emergence (t3), 6 h after emergence of anaesthesia (t4) and three times daily (08:00, 14:00, 20:00 ± 1 h) at the palm and the fingertips until the second postoperative day (t5-t10). Primary outcome was the correlation of HSI with perioperative organ dysfunction assessed with the perioperative change of SOFA score. RESULTS Two hundred and fifty HSI measurements were performed in 25 patients. Anaesthetic induction led to a significant increase of tissue oxygenation parameters StO2 and NPI (t1-t2). StO2 and NPI decreased significantly from t2 until the end of surgery (t3). THI of the palm showed a strong correlation with haemoglobin levels preoperatively (t2: r = 0.83, p < 0.001) and 6 h postoperatively (t4: r = 0.71, p = 0.001) but not before anaesthesia emergence (t3: r = 0.35, p = 0.10). TWI of the palm and the fingertip rose significantly between pre- and postoperative measurements (t2-t3). Higher blood loss, syndecan level and duration of surgery were associated with a higher increase of TWI. The perioperative change of HSI parameters (∆t1-t3) did not correlate with the perioperative change of the SOFA score. CONCLUSION This is the first study using HSI skin measurements to visualize tissue oxygenation and tissue water content in patients undergoing pancreatic surgery. HSI was able to measure short-term changes of tissue oxygenation during anaesthetic induction and pre- to postoperatively. TWI indicated a perioperative increase of tissue water content. Perioperative use of HSI could be a useful extension of haemodynamic monitoring to assess the microcirculatory response during haemodynamic therapy and major surgery. TRIAL REGISTRATION German Clinical Trial Register, DRKS00017313 on 5 June 2019.
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Nusshag C, Reuß CJ, Dietrich M, Hecker A, Jungk C, Michalski D, Fiedler MO, Bernhard M, Beynon C, Weigand MA, Brenner T. [Focus on nephrology : Intensive medical care studies 2020/2021]. Anaesthesist 2021; 70:1053-1058. [PMID: 34677635 DOI: 10.1007/s00101-021-00980-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 11/29/2022]
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Fiedler MO, Reuß CJ, Bernhard M, Beynon C, Hecker A, Jungk C, Nusshag C, Michalski D, Brenner T, Weigand MA, Dietrich M. [Focus ventilation, oxygen therapy and weaning : Intensive medical care studies from 2020/2021]. Anaesthesist 2021; 70:967-976. [PMID: 34613457 PMCID: PMC8493774 DOI: 10.1007/s00101-021-00979-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 12/15/2022]
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Loos M, Strobel O, Mehrabi A, Mihaljevic AL, Ramouz A, Dietrich M, Müller-Stich BP, Diener MK, Schneider M, Berchtold C, Al-Saeedi M, Feisst M, Hinz U, Schwab C, von Winterfeld M, Mayer P, Giannakis A, Weigand MA, Hackert T, Büchler MW. Postoperative acute pancreatitis is a serious but rare complication after distal pancreatectomy. HPB (Oxford) 2021; 23:1339-1348. [PMID: 33546896 DOI: 10.1016/j.hpb.2021.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Revised: 12/16/2020] [Accepted: 01/05/2021] [Indexed: 12/12/2022]
Abstract
BACKGROUND The clinical relevance of hyperamylasemia after distal pancreatectomy (DP) remains unclear and no internationally accepted definition of postoperative acute pancreatitis (POAP) exists. The aim of this study was to characterize POAP after DP and to assess the role of serum amylase (SA) in POAP. METHODS Outcomes of 641 patients who had undergone DP between 2015 and 2019 were analyzed. Postoperative SA was determined in all patients. POAP was defined based on contrast-enhanced computed tomography (CT) or intraoperative findings during relaparotomy. RESULTS An elevation of SA on postoperative day 1 (hyperamylasemiaPOD1) was found in 398 patients (62.1%). Twelve patients (1.87%) were identified with POAP. Ten patients demonstrated radiologic criteria for POAP and in two patients POAP was diagnosed during relaparotomy. Outcome of POAP patients was worse than that of patients with hyperamylasemiaPOD1 alone and that with normal SAPOD1 without POAP evidence (postoperative pancreatic fistula 50% vs 30.6% vs 18.5%; length of hospital stay 26 days vs 12 vs 11, respectively). The overall 90-day mortality of all 641 patients was 0.6%. CONCLUSION POAP is a serious but rare complication after DP. HyperamylasemiaPOD1 is of prognostic relevance after DP, but it seems not sufficient as a single parameter to diagnose POAP.
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Beynon C, Bernhard M, Brenner T, Dietrich M, Fiedler MO, Nusshag C, Weigand MA, Reuß CJ, Michalski D, Jungk C. [Neurosurgical intensive care medicine : Intensive medical care studies from 2020/2021]. Anaesthesist 2021; 70:789-794. [PMID: 34378066 DOI: 10.1007/s00101-021-00978-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 10/20/2022]
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Dietrich M, Beynon C, Fiedler MO, Bernhard M, Kümpers P, Hecker A, Jungk C, Nusshag C, Michalski D, Brenner T, Weigand MA, Reuß CJ. [Focus general intensive care medicine. Intensive care studies from 2020/2021]. Anaesthesist 2021; 70:888-894. [PMID: 34324037 PMCID: PMC8319701 DOI: 10.1007/s00101-021-00976-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 11/26/2022]
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Richter DC, Dietrich M, Lalev LD, Schmitt FCF, Fiedler MO, Bruckner T, Stoerzinger D, Chiriac U, Klein S, Hackert T, Brenner T, Brinkmann A, Weigand MA. Prolonged Infusion of β-Lactams Decreases Mortality in Patients with Septic Shock: A Retrospective before-and-after Study. Antibiotics (Basel) 2021; 10:antibiotics10060687. [PMID: 34201244 PMCID: PMC8229114 DOI: 10.3390/antibiotics10060687] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 02/07/2023] Open
Abstract
Septic shock substantially alters the pharmacokinetic properties of β-lactams with a subsequently high risk of insufficiently low serum concentrations and treatment failure. Considering their pharmacokinetic (PK)/pharmacodynamic (PD) index, prolonged infusions (PI) of β-lactams extend the time that the unbound fraction of the drug remains above the minimal inhibitory concentration MIC (ft >MIC) and may improve patient survival. The present study is a monocentric, retrospective before-and-after analysis of septic shock patients treated with β-lactams. Patients of the years 2015–2017 received intermittent bolus application whereas patients of 2017–2020 received PI of β-lactams. The primary outcome was mortality at day 30 and 90 after diagnosis of septic shock. Mortality rates in the PI group were significantly lower on day 30 (PI: 41%, n = 119/290 vs. IB: 54.8%, n = 68/114; p = 0.0097) and day 90 (PI: 47.9%, n = 139/290 vs. IB: 62.9%, n = 78/124; p = 0.005). After propensity-score matching, 30- and 90-day mortality remained lower for the PI group (−10%, p = 0.14). PI was further associated with a reduction in the duration of invasive ventilation and a stronger decrease in SOFA scores within a 14 day-observation period. PI of β-lactams was associated with a significant reduction of mortality in patients with septic shock and may have beneficial effects on invasive ventilation and recovery from sepsis-related organ failure.
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Dietrich M, Marx S, von der Forst M, Bruckner T, Schmitt FCF, Fiedler MO, Nickel F, Studier-Fischer A, Müller-Stich BP, Hackert T, Brenner T, Weigand MA, Uhle F, Schmidt K. Bedside hyperspectral imaging indicates a microcirculatory sepsis pattern - an observational study. Microvasc Res 2021; 136:104164. [PMID: 33831406 DOI: 10.1016/j.mvr.2021.104164] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/28/2021] [Accepted: 03/28/2021] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Microcirculatory alterations are key mechanisms in sepsis pathophysiology leading to tissue hypoxia, edema formation, and organ dysfunction. Hyperspectral imaging (HSI) is an emerging imaging technology that uses tissue-light interactions to evaluate biochemical tissue characteristics including tissue oxygenation, hemoglobin content and water content. Currently, clinical data for HSI technologies in critical ill patients are still limited. METHODS AND ANALYSIS TIVITA® Tissue System was used to measure Tissue oxygenation (StO2), Tissue Hemoglobin Index (THI), Near Infrared Perfusion Index (NPI) and Tissue Water Index (TWI) in 25 healthy volunteers and 25 septic patients. HSI measurement sites were the palm, the fingertip, and a suprapatellar knee area. Septic patients were evaluated on admission to the ICU (E), 6 h afterwards (E+6) and three times a day (t3-t9) within a total observation period of 72 h. Primary outcome was the correlation of HSI results with daily SOFA-scores. RESULTS Serial HSI at the three measurement sites in healthy volunteers showed a low mean variance expressing high retest reliability. HSI at E demonstrated significantly lower StO2 and NPI as well as higher TWI at the palm and fingertip in septic patients compared to healthy volunteers. StO2 and TWI showed corresponding results at the suprapatellar knee area. In septic patients, palm and fingertip THI identified survivors (E-t4) and revealed predictivity for 28-day mortality (E). Fingertip StO2 and THI correlated to SOFA-score on day 2. TWI was consistently increased in relation to the TWI range of healthy controls during the observation time. Palm TWI correlated positively with SOFA scores on day 3. DISCUSSION HSI results in septic patients point to a distinctive microcirculatory pattern indicative of reduced skin oxygenation and perfusion quality combined with increased blood pooling and tissue water content. THI might possess risk-stratification properties and TWI could allow tissue edema evaluation in critically ill patients. CONCLUSION HSI technologies could open new perspectives in microcirculatory monitoring by visualizing oxygenation and perfusion quality combined with tissue water content in critically ill patients - a prerequisite for future tissue perfusion guided therapy concepts in intensive care medicine.
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Michalski D, Jungk C, Brenner T, Dietrich M, Nusshag C, Reuß CJ, Fiedler MO, Bernhard M, Beynon C, Weigand MA. [Focus neurological intensive care medicine : Intensive medical care studies from 2019/2020]. Anaesthesist 2021; 70:164-170. [PMID: 33051691 PMCID: PMC7851099 DOI: 10.1007/s00101-020-00861-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fiedler MO, Reuß CJ, Bernhard M, Beynon C, Hecker A, Jungk C, Nusshag C, Michalski D, Brenner T, Weigand MA, Dietrich M. [Erratum to: Focus ventilation, oxygen therapy and weaning. Intensive medical care studies from 2019/2020]. Anaesthesist 2021; 70:356-357. [PMID: 33619597 DOI: 10.1007/s00101-021-00924-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Fiedler MO, Simeliunas E, Deutsch BL, Diktanaite D, Harms A, Brune M, Dietrich M, Uhle F, Weigand MA, Kalenka A. Impact of Different Positive End-Expiratory Pressures on Lung Mechanics in the Setting of Moderately Elevated Intra-Abdominal Pressure and Acute Lung Injury in a Porcine Model. J Clin Med 2021; 10:jcm10020306. [PMID: 33467666 PMCID: PMC7830768 DOI: 10.3390/jcm10020306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Revised: 01/10/2021] [Accepted: 01/12/2021] [Indexed: 12/27/2022] Open
Abstract
The effects of a moderately elevated intra-abdominal pressure (IAP) on lung mechanics in acute respiratory distress syndrome (ARDS) have still not been fully analyzed. Moreover, the optimal positive end-expiratory pressure (PEEP) in elevated IAP and ARDS is unclear. In this paper, 18 pigs under general anesthesia received a double hit lung injury. After saline lung lavage and 2 h of injurious mechanical ventilation to induce an acute lung injury (ALI), an intra-abdominal balloon was filled until an IAP of 10 mmHg was generated. Animals were randomly assigned to one of three groups (group A = PEEP 5, B = PEEP 10 and C = PEEP 15 cmH2O) and ventilated for 6 h. We measured end-expiratory lung volume (EELV) per kg bodyweight, driving pressure (ΔP), transpulmonary pressure (ΔPL), static lung compliance (Cstat), oxygenation (P/F ratio) and cardiac index (CI). In group A, we found increases in ΔP (22 ± 1 vs. 28 ± 2 cmH2O; p = 0.006) and ΔPL (16 ± 1 vs. 22 ± 2 cmH2O; p = 0.007), with no change in EELV/kg (15 ± 1 vs. 14 ± 1 mL/kg) when comparing hours 0 and 6. In group B, there was no change in ΔP (26 ± 2 vs. 25 ± 2 cmH2O), ΔPL (19 ± 2 vs. 18 ± 2 cmH2O), Cstat (21 ± 3 vs. 21 ± 2 cmH2O/mL) or EELV/kg (12 ± 2 vs. 13 ± 3 mL/kg). ΔP and ΔPL were significantly lower after 6 h when comparing between group C and A (21 ± 1 vs. 28 ± 2 cmH2O; p = 0.020) and (14 ± 1 vs. 22 ± 2 cmH2O; p = 0.013)). The EELV/kg increased over time in group C (13 ± 1 vs. 19 ± 2 mL/kg; p = 0.034). The P/F ratio increased in all groups over time. CI decreased in groups B and C. The global lung injury score did not significantly differ between groups (A: 0.25 ± 0.05, B: 0.21 ± 0.02, C: 0.22 ± 0.03). In this model of ALI, elevated IAP, ΔP and ΔPL increased further over time in the group with a PEEP of 5 cmH2O applied over 6 h. This was not the case in the groups with a PEEP of 10 and 15 cmH2O. Although ΔP and ΔPL were significantly lower after 6 hours in group C compared to group A, we could not show significant differences in histological lung injury score.
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Fiedler MO, Reuß CJ, Bernhard M, Beynon C, Hecker A, Jungk C, Nusshag C, Michalski D, Brenner T, Weigand MA, Dietrich M. [Focus ventilation, oxygen therapy and weaning : Intensive medical care studies from 2019/2020]. Anaesthesist 2020; 69:926-936. [PMID: 33026508 PMCID: PMC7539275 DOI: 10.1007/s00101-020-00859-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Dietrich M, Brenner T, Nickel F, Studier-Fischer A, Müller-Stich BP, Weigand MA, Schmidt K. [What is new in … Hyperspectral imaging : A future technology for hemodynamic monitoring]. Anaesthesist 2020; 70:144-145. [PMID: 33258002 DOI: 10.1007/s00101-020-00892-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nusshag C, Reuß CJ, Dietrich M, Hecker A, Jungk C, Michalski D, Fiedler MO, Bernhard M, Beynon C, Weigand MA, Brenner T. [Focus nephrology : Intensive medical care studies from 2019/2020]. Anaesthesist 2020; 70:250-256. [PMID: 33103208 DOI: 10.1007/s00101-020-00856-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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von der Forst M, Weiterer S, Dietrich M, Loos M, Lichtenstern C, Weigand MA, Siegler BH. [Perioperative fluid management in major abdominal surgery]. Anaesthesist 2020; 70:127-143. [PMID: 33034685 PMCID: PMC7851019 DOI: 10.1007/s00101-020-00867-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Intravascular fluid administration belongs to the cornerstones of perioperative treatment with a substantial impact on surgical outcome especially with respect to major abdominal surgery. By avoidance of hypovolemia and hypervolemia, adequate perioperative fluid management significantly contributes to the reduction of insufficient tissue perfusion as a determinant of postoperative morbidity and mortality. The effective use of intravascular fluids requires detailed knowledge of the substances as well as measures to guide fluid therapy. Fluid management already starts preoperatively and should be continued in the postoperative setting (recovery room, peripheral ward) considering a patient-adjusted and surgery-adjusted hemodynamic monitoring. Communication between all team members participating in perioperative care is essential to optimize fluid management.
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Dietrich M, Beynon C, Fiedler MO, Bernhard M, Hecker A, Jungk C, Nusshag C, Michalski D, Brenner T, Weigand MA, Reuß CJ. Fokus allgemeine Intensivmedizin. Anaesthesist 2020; 69:835-843. [DOI: 10.1007/s00101-020-00857-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Beynon C, Bernhard M, Brenner T, Dietrich M, Fiedler MO, Nusshag C, Weigand MA, Reuß CJ, Michalski D, Jungk C. [Focus neurosurgical intensive care medicine : Intensive medical care studies from 2019/2020]. Anaesthesist 2020; 70:78-82. [PMID: 33026505 DOI: 10.1007/s00101-020-00858-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Loos M, Strobel O, Dietrich M, Mehrabi A, Ramouz A, Al-Saeedi M, Müller-Stich BP, Diener MK, Schneider M, Berchtold C, Feisst M, Hinz U, Mayer P, Giannakis A, Schneider D, Weigand MA, Büchler MW, Hackert T. Hyperamylasemia and acute pancreatitis after pancreatoduodenectomy: Two different entities. Surgery 2020; 169:369-376. [PMID: 32981689 DOI: 10.1016/j.surg.2020.07.050] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 07/16/2020] [Accepted: 07/24/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Serum amylase activity greater than the institutional upper limit of normal (hyperamylasemia) on postoperative day 0-2 has been suggested as a criterion to define postoperative acute pancreatitis after pancreatoduodenectomy, but robust evidence supporting this definition is lacking. BACKGROUND To assess the clinical impact of hyperamylasemia after pancreatoduodenectomy and to define postoperative acute pancreatitis. METHODS Data of 1,235 consecutive patients who had undergone pancreatoduodenectomy between January 2010 and December 2014 were extracted from a prospective database and analyzed. Postoperative acute pancreatitis was defined based on the computed tomography severity index. Logistic regression modeling was used to calculate the postoperative acute pancreatitis rate of the entire study population. RESULTS Hyperamylasemia on postoperative day 1 was found in 52% of patients after pancreatoduodenectomy. Patients with hyperamylasemia on postoperative day 1 had statistically significantly greater morbidity and mortality than patients with a normal serum amylase activity on postoperative day 1 with the rates of postoperative pancreatic fistula of 14.5% vs 2.1%, and 90-day mortality of 6.6% vs 2.2%, respectively. Of the 364 patients who underwent postoperative computed tomography, 103 (28%) had radiologic signs of acute pancreatitis, thus defining them as having postoperative acute pancreatitis by our definition. Logistic regression modeling showed a 14.7% rate of postoperative acute pancreatitis for the entire patient cohort and 29.2% for patients with hyperamylasemia on postoperative day 1. Outcomes of patients with postoperative acute pancreatitis defined based on the computed tomography severity index showed a rate of postoperative pancreatic fistula of 32.4% and a 90-day mortality rate of 11.8%, which were worse than those of patients with hyperamylasemia on postoperative day 1 alone. CONCLUSION Hyperamylasemia on postoperative day 1 is a frequent finding after pancreatoduodenectomy, but hyperamylasemia on postoperative day 1 alone is not synonymous with postoperative acute pancreatitis because only 29.2% of such patients have acute pancreatitis based on computed tomography findings. Postoperative acute pancreatitis is a dangerous complication after pancreatoduodenectomy, but its prevalence, according to the gold standard of CT, is not as high as reported previously. Our data suggest that hyperamylasemia on postoperative day 1 and postoperative acute pancreatitis are 2 different entities.
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Dietrich M, Marx S, Bruckner T, Nickel F, Müller-Stich BP, Hackert T, Weigand MA, Uhle F, Brenner T, Schmidt K. Bedside hyperspectral imaging for the evaluation of microcirculatory alterations in perioperative intensive care medicine: a study protocol for an observational clinical pilot study (HySpI-ICU). BMJ Open 2020; 10:e035742. [PMID: 32948546 PMCID: PMC7500303 DOI: 10.1136/bmjopen-2019-035742] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION Normalisation of macrocirculatory parameters during resuscitation therapy does not guarantee the restoration of microcirculatory perfusion in critical illness due to haemodynamic incoherence. Persistent microcirculatory abnormalities are associated with severity of organ dysfunction and mandate the development of bedside microcirculatory monitoring. A novel hyperspectral imaging (HSI) system can visualise changes in skin perfusion, oxygenation and water content at the bedside. We aim to evaluate the effectiveness of HSI for bedside monitoring of skin microcirculation and the association of HSI parameters with organ dysfunction in patients with sepsis and major abdominal surgery. METHODS AND ANALYSIS Three independent groups will be assessed and separately analysed within a clinical prospective observational study: (1) 25 patients with sepsis or septic shock (according to sepsis-3 criteria), (2) 25 patients undergoing pancreatic surgery and (3) 25 healthy controls. Patients with sepsis and patients undergoing pancreatic surgery will receive standard therapy according to local protocols derived from international guidelines. In addition, cardiac output of perioperative patients and patients with sepsis will be measured. Healthy controls undergo one standardised evaluation. The TIVITA Tissue System is a novel HSI system that uses the visible and near-infrared spectral light region to determine tissue microcirculatory parameters. HSI analysis (hand/knee) will be done in parallel to haemodynamic monitoring within defined intervals during a 72-hour observation period. HSI data will be correlated with the Sequential Organ Failure Assessment score, global haemodynamics, inflammation and glycocalyx markers, surgical complications and 30-day outcome. ETHICS AND DISSEMINATION The protocol has been approved by the local ethics committee of the University of Heidelberg (S-148/2019). Study results will be submitted to peer-reviewed journals and medical conferences. TRIAL REGISTRATION NUMBER DRKS00017313; Pre-results.
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Kilowski K, Dietrich M, Xiu J, Jones N, Powell M, Galvan Turner V, Erickson B, Mutch D, Thaker P, ElNaggar A, Dizon D, Ahmad S, Herzog T, Korn W, Holloway R. 844P KRAS mutant epithelial ovarian carcinomas (EOC) represent distinct genomic genotypes. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Beynon C, Bernhard M, Brenner T, Dietrich M, Nusshag C, Weigand MA, Reuß CJ, Michalski D, Jungk C. [Focus on neurosurgery : Intensive care studies from 2018-2019]. Anaesthesist 2020; 69:205-210. [PMID: 31440787 DOI: 10.1007/s00101-019-00644-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Dietrich M, Reuß CJ, Beynon C, Hecker A, Jungk C, Michalski D, Nusshag C, Schmidt K, Weigand MA, Bernhard M, Brenner T. [Additive therapies : Intensive care studies from 2018-2019]. Anaesthesist 2020; 69:52-54. [PMID: 31444507 DOI: 10.1007/s00101-019-00642-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Dietrich M, Marx S, Weigand MA, Brenner T, Schmidt K. Hyperspectral imaging for bedside microcirculatory monitoring of critical care and perioperative patients: A new approach for tissue perfusion-based haemodynamic management? Anaesth Crit Care Pain Med 2020; 39:631-633. [PMID: 32289530 DOI: 10.1016/j.accpm.2019.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 11/01/2019] [Accepted: 11/01/2019] [Indexed: 10/24/2022]
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50
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Nusshag C, Beynon C, Dietrich M, Hecker A, Jungk C, Michalski D, Schmidt K, Weigand MA, Reuß CJ, Bernhard M, Brenner T. [Focus on nephrology : Intensive medical care studies from 2018-2019]. Anaesthesist 2020; 68:854-858. [PMID: 31440785 DOI: 10.1007/s00101-019-00641-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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