1
|
Sasaki K, Kawada T, Matsushita H, Yokota S, Kakuuchi M, Yokoi A, Yoshida Y, Morita H, Sato K, Nishikawa T, Kutter APN, Kataoka Y, Alexander J, Saku K, Ishikawa T, Uemura K. Computer-controlled closed-loop norepinephrine infusion system for automated control of mean arterial pressure in dogs under isoflurane-induced hypotension: a feasibility study. Front Vet Sci 2024; 11:1374356. [PMID: 38881786 PMCID: PMC11177754 DOI: 10.3389/fvets.2024.1374356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/30/2024] [Indexed: 06/18/2024] Open
Abstract
Introduction Intra-operative hypotension is a common complication of surgery under general anesthesia in dogs and humans. Computer-controlled closed-loop infusion systems of norepinephrine (NE) have been developed and clinically applied for automated optimization of arterial pressure (AP) and prevention of intra-operative hypotension in humans. This study aimed to develop a simple computer-controlled closed-loop infusion system of NE for the automated control of the mean arterial pressure (MAP) in dogs with isoflurane-induced hypotension and to validate the control of MAP by the developed system. Methods NE was administered via the cephalic vein, whereas MAP was measured invasively by placing a catheter in the dorsal pedal artery. The proportional-integral-derivative (PID) controller in the negative feedback loop of the developed system titrated the infusion rate of NE to maintain the MAP at the target value of 60 mmHg. The titration was updated every 2 s. The performance of the developed system was evaluated in six laboratory Beagle dogs under general anesthesia with isoflurane. Results In the six dogs, when the concentration [median (interquartile range)] of inhaled isoflurane was increased from 1.5 (1.5-1.5)% to 4 (4-4)% without activating the system, the MAP was lowered from 95 (91-99) to 41 (37-42) mmHg. In contrast, when the concentration was increased from 1.5 (1.0-1.5)% to 4 (4-4.8)% for a 30-min period and the system was simultaneously activated, the MAP was temporarily lowered from 92 (89-95) to 47 (43-49) mmHg but recovered to 58 (57-58) mmHg owing to the system-controlled infusion of NE. If the acceptable target range for MAP was defined as target MAP ±5 mmHg (55 ≤ MAP ≤65 mmHg), the percentage of time wherein the MAP was maintained within the acceptable range was 96 (89-100)% in the six dogs during the second half of the 30-min period (from 15 to 30 min after system activation). The median performance error, median absolute performance error, wobble, and divergence were - 2.9 (-4.7 to 1.9)%, 2.9 (2.0-4.7)%, 1.3 (0.8-1.8)%, and - 0.24 (-0.34 to -0.11)%·min-1, respectively. No adverse events were observed during the study period, and all dogs were extubated uneventfully. Conclusion This system was able to titrate the NE infusion rates in an accurate and stable manner to maintain the MAP within the predetermined target range in dogs with isoflurane-induced hypotension. This system can be a potential tool in daily clinical practice for the care of companion dogs.
Collapse
Affiliation(s)
- Kazumasu Sasaki
- Akita Cerebrospinal and Cardiovascular Center, Research Institute for Brain and Blood Vessels, Akita, Japan
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
- Sendai Animal Care and Research Center, Sendai, Japan
| | - Toru Kawada
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Hiroki Matsushita
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Shohei Yokota
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Midori Kakuuchi
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Aimi Yokoi
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yuki Yoshida
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Hidetaka Morita
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Kei Sato
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Takuya Nishikawa
- Department of Research Promotion and Management, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Annette P N Kutter
- Section of Anesthesiology, Department of Clinical Diagnostics and Services, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Yasuyuki Kataoka
- Medical and Health Informatics, NTT Research, Inc., Sunnyvale, CA, United States
| | - Joe Alexander
- Medical and Health Informatics, NTT Research, Inc., Sunnyvale, CA, United States
| | - Keita Saku
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
- NTTR-NCVC Bio Digital Twin Center, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Tatsuya Ishikawa
- Akita Cerebrospinal and Cardiovascular Center, Research Institute for Brain and Blood Vessels, Akita, Japan
| | - Kazunori Uemura
- Department of Cardiovascular Dynamics, National Cerebral and Cardiovascular Center, Suita, Japan
- NTTR-NCVC Bio Digital Twin Center, National Cerebral and Cardiovascular Center, Suita, Japan
| |
Collapse
|
2
|
Sanin GD, Cambronero GE, Wood EC, Patterson JW, Lane MR, Renaldo AC, Laingen BE, Rahbar E, Adams JY, Johnson A, Neff LP, Williams TK. MAN VERSUS MACHINE: PROVIDER DIRECTED VERSUS PRECISION AUTOMATED CRITICAL CARE MANAGEMENT IN A PORCINE MODEL OF DISTRIBUTIVE SHOCK. Shock 2024; 61:758-765. [PMID: 38526148 PMCID: PMC11328591 DOI: 10.1097/shk.0000000000002345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
ABSTRACT Background: Critical care management of shock is a labor-intensive process. Precision Automated Critical Care Management (PACC-MAN) is an automated closed-loop system incorporating physiologic and hemodynamic inputs to deliver interventions while avoiding excessive fluid or vasopressor administration. To understand PACC-MAN efficacy, we compared PACC-MAN to provider-directed management (PDM). We hypothesized that PACC-MAN would achieve equivalent resuscitation outcomes to PDM while maintaining normotension with lower fluid and vasopressor requirements. Methods : Twelve swine underwent 30% controlled hemorrhage over 30 min, followed by 45 min of aortic occlusion to generate a vasoplegic shock state, transfusion to euvolemia, and randomization to PACC-MAN or PDM for 4.25 h. Primary outcomes were total crystalloid volume, vasopressor administration, total time spent at hypotension (mean arterial blood pressure <60 mm Hg), and total number of interventions. Results : Weight-based fluid volumes were similar between PACC-MAN and PDM; median and IQR are reported (73.1 mL/kg [59.0-78.7] vs. 87.1 mL/kg [79.4-91.8], P = 0.07). There was no statistical difference in cumulative norepinephrine (PACC-MAN: 33.4 μg/kg [27.1-44.6] vs. PDM: 7.5 [3.3-24.2] μg/kg, P = 0.09). The median percentage of time spent at hypotension was equivalent (PACC-MAN: 6.2% [3.6-7.4] and PDM: 3.1% [1.3-6.6], P = 0.23). Urine outputs were similar between PACC-MAN and PDM (14.0 mL/kg vs. 21.5 mL/kg, P = 0.13). Conclusion : Automated resuscitation achieves equivalent resuscitation outcomes to direct human intervention in this shock model. This study provides the first translational experience with the PACC-MAN system versus PDM.
Collapse
Affiliation(s)
- Gloria D Sanin
- Department of General Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - Gabriel E Cambronero
- Department of General Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - Elizabeth C Wood
- Department of General Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - James W Patterson
- Department of Vascular and Endovascular Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - Magan R Lane
- Department of Vascular and Endovascular Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - Antonio C Renaldo
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston Salem, North Carolina
| | - Bonnie E Laingen
- Department of General Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - Elaheh Rahbar
- Department of Biomedical Engineering, Wake Forest University School of Medicine, Winston Salem, North Carolina
| | - Jason Y Adams
- Department of Pulmonary, Critical Care, and Sleep Medicine, University of California, Davis, California
| | - Austin Johnson
- Department of Emergency Medicine, University of Utah School of Medicine, Salt Lake City, Utah
| | - Lucas P Neff
- Department of General Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| | - Timothy K Williams
- Department of Vascular and Endovascular Surgery, Atrium Health Wake Forest Baptist, Winston-Salem, North Carolina
| |
Collapse
|
3
|
Coeckelenbergh S, Boelefahr S, Alexander B, Perrin L, Rinehart J, Joosten A, Barvais L. Closed-loop anesthesia: foundations and applications in contemporary perioperative medicine. J Clin Monit Comput 2024; 38:487-504. [PMID: 38184504 DOI: 10.1007/s10877-023-01111-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 11/21/2023] [Indexed: 01/08/2024]
Abstract
A closed-loop automatically controls a variable using the principle of feedback. Automation within anesthesia typically aims to improve the stability of a controlled variable and reduce workload associated with simple repetitive tasks. This approach attempts to limit errors due to distractions or fatigue while simultaneously increasing compliance to evidence based perioperative protocols. The ultimate goal is to use these advantages over manual care to improve patient outcome. For more than twenty years, clinical studies in anesthesia have demonstrated the superiority of closed-loop systems compared to manual control for stabilizing a single variable, reducing practitioner workload, and safely administering therapies. This research has focused on various closed-loops that coupled inputs and outputs such as the processed electroencephalogram with propofol, blood pressure with vasopressors, and dynamic predictors of fluid responsiveness with fluid therapy. Recently, multiple simultaneous independent closed-loop systems have been tested in practice and one study has demonstrated a clinical benefit on postoperative cognitive dysfunction. Despite their advantages, these tools still require that a well-trained practitioner maintains situation awareness, understands how closed-loop systems react to each variable, and is ready to retake control if the closed-loop systems fail. In the future, multiple input multiple output closed-loop systems will control anesthetic, fluid and vasopressor titration and may perhaps integrate other key systems, such as the anesthesia machine. Human supervision will nonetheless always be indispensable as situation awareness, communication, and prediction of events remain irreplaceable human factors.
Collapse
Affiliation(s)
- Sean Coeckelenbergh
- Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Saclay, Université Paris-Saclay, Hôpital Paul-Brousse, Assistance Publique Hôpitaux de Paris, Villejuif, France.
- Outcomes Research Consortium, Cleveland, OH, USA.
| | - Sebastian Boelefahr
- Department of Anesthesiology and Intensive Care, Klinikum Aschaffenburg-Alzenau, Frankfurt University and Wuerzburg University Affiliated Academic Training Hospital, Aschaffenburg, Germany
| | - Brenton Alexander
- Department of Anesthesiology & Perioperative Care, University of California San Diego, San Diego, CA, USA
| | - Laurent Perrin
- Department of Anaesthesia and Resuscitation, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Joseph Rinehart
- Outcomes Research Consortium, Cleveland, OH, USA
- Department of Anesthesiology & Perioperative Care, University of California Irvine, Irvine, CA, USA
| | - Alexandre Joosten
- Department of Anesthesiology & Perioperative Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Luc Barvais
- Department of Anaesthesia and Resuscitation, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| |
Collapse
|
4
|
Coeckelenbergh S, Vincent JL, Duranteau J, Joosten A, Rinehart J. Perioperative Fluid and Vasopressor Therapy in 2050: From Experimental Medicine to Personalization Through Automation. Anesth Analg 2024; 138:284-294. [PMID: 38215708 DOI: 10.1213/ane.0000000000006672] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2024]
Abstract
Intravenous (IV) fluids and vasopressor agents are key components of hemodynamic management. Since their introduction, their use in the perioperative setting has continued to evolve, and we are now on the brink of automated administration. IV fluid therapy was first described in Scotland during the 1832 cholera epidemic, when pioneers in medicine saved critically ill patients dying from hypovolemic shock. However, widespread use of IV fluids only began in the 20th century. Epinephrine was discovered and purified in the United States at the end of the 19th century, but its short half-life limited its implementation into patient care. Advances in venous access, including the introduction of the central venous catheter, and the ability to administer continuous infusions of fluids and vasopressors rather than just boluses, facilitated the use of fluids and adrenergic agents. With the advent of advanced hemodynamic monitoring, most notably the pulmonary artery catheter, the role of fluids and vasopressors in the maintenance of tissue oxygenation through adequate cardiac output and perfusion pressure became more clearly established, and hemodynamic goals could be established to better titrate fluid and vasopressor therapy. Less invasive hemodynamic monitoring techniques, using echography, pulse contour analysis, and heart-lung interactions, have facilitated hemodynamic monitoring at the bedside. Most recently, advances have been made in closed-loop fluid and vasopressor therapy, which apply computer assistance to interpret hemodynamic variables and therapy. Development and increased use of artificial intelligence will likely represent a major step toward fully automated hemodynamic management in the perioperative environment in the near future. In this narrative review, we discuss the key events in experimental medicine that have led to the current status of fluid and vasopressor therapies and describe the potential benefits that future automation has to offer.
Collapse
Affiliation(s)
- Sean Coeckelenbergh
- From the Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Saclay, Université Paris-Saclay, Hôpital Paul-Brousse, Paris, France
- Outcomes Research Consortium, Cleveland, Ohio
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jacques Duranteau
- From the Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Saclay, Université Paris-Saclay, Hôpital Paul-Brousse, Paris, France
- Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Saclay, Université Paris-Saclay, Hôpital De Bicêtre, Paris, France
| | - Alexandre Joosten
- From the Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Saclay, Université Paris-Saclay, Hôpital Paul-Brousse, Paris, France
- Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Saclay, Université Paris-Saclay, Hôpital De Bicêtre, Paris, France
| | - Joseph Rinehart
- Outcomes Research Consortium, Cleveland, Ohio
- Department of Anesthesiology & Perioperative Care, University of California, Irvine, California
| |
Collapse
|
5
|
Liu Z, Zhou W, Liu Q, Huan Z, Wang Q, Ge X. Pachymic Acid Prevents Hemorrhagic Shock-Induced Cardiac Injury by Suppressing M1 Macrophage Polarization and NF-[Formula: see text]B Signaling Pathway. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2023; 51:2157-2173. [PMID: 37865871 DOI: 10.1142/s0192415x23500921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2023]
Abstract
Hemorrhagic shock (HS) is the leading cause of death in trauma patients. Inflammation following HS can lead to cardiac damage. Pachymic acid (PA), a triterpenoid extracted from Poria cocos, has been found to possess various biological activities, including anti-inflammatory and anti-apoptotic properties. Our research aims to investigate the protective effects of PA against HS-induced heart damage and the underlying mechanisms involved. Male Sprague-Dawley rats were intraperitoneally injected with PA (7.5 or 15[Formula: see text]mg/kg) daily for three days. Subsequently, we created a rat model of HS by drawing blood through a catheter inserted into the femoral artery followed by resuscitation. The results revealed that HS led to abnormalities in hemodynamics, serum cardiac enzyme levels, and cardiac structure, as well as induced cardiac apoptosis. However, pretreatment with PA effectively alleviated these effects. PA-pretreatment also suppressed mRNA and protein levels of interleukin (IL)-1[Formula: see text], IL-6, and tumor necrosis factor [Formula: see text] (TNF-[Formula: see text]) in the heart tissues of HS rats. Additionally, PA-pretreatment reduced inflammatory cell infiltration and M1 macrophage polarization while exaggerating M2 polarization in HS rat hearts. The study observed a decreased proportion of the expression of of M1 macrophages (CD86[Formula: see text]) and their marker (iNOS), along with an increased proportion of the expression of M2 macrophages (CD206[Formula: see text]) and their marker (Arg-1). Notably, PA-pretreatment suppressed NF-[Formula: see text]B pathway activation via inhibiting NF-[Formula: see text]B p65 phosphorylation and its nuclear translocation. In conclusion, PA-pretreatment ameliorates HS-induced cardiac injury, potentially through its inhibition of the NF-[Formula: see text]B pathway. Therefore, PA treatment holds promise as a strategy for mitigating cardiac damage in HS.
Collapse
Affiliation(s)
- Zhenfeng Liu
- Department of Traditional Chinese Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University Wuxi, Jiangsu 214000, P. R. China
| | - Wuming Zhou
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University Wuxi, Jiangsu 214000, P. R. China
| | - Qingyang Liu
- Department of Clinical Laboratory, Wuxi 9th People's Hospital Affiliated to Soochow University Wuxi, Jiangsu 214000, P. R. China
| | - Zhirong Huan
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University Wuxi, Jiangsu 214000, P. R. China
| | - Qiubo Wang
- Department of Clinical Laboratory, Wuxi 9th People's Hospital Affiliated to Soochow University Wuxi, Jiangsu 214000, P. R. China
| | - Xin Ge
- Department of Critical Care Medicine, Wuxi 9th People's Hospital Affiliated to Soochow University Wuxi, Jiangsu 214000, P. R. China
- Orthopedic Institution of Wuxi City, Wuxi, Jiangsu 214000, P. R. China
| |
Collapse
|
6
|
Tan HS, Nagarajan S, Chan JJI, Tan CW, Sultana R, Sia ATH, Sng BL. Evaluating an advanced double intravenous vasopressor automated system to treat hypotension during spinal anesthesia for cesarean delivery: a randomized controlled trial. BMC Anesthesiol 2023; 23:33. [PMID: 36703120 PMCID: PMC9878794 DOI: 10.1186/s12871-023-01992-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 01/20/2023] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND The optimal treatment of hypotension during spinal anaesthesia is uncertain. A novel double intravenous vasopressor automated (DIVA) system reduces hypotension compared to standard care, and was subsequently modified to an advanced-DIVA (ADIVA) system. The primary objective was to compare ADIVA versus DIVA on incidence of hypotension (systolic BP (SBP) < 80% baseline). METHODS We conducted a randomized-controlled trial in women undergoing elective cesarean delivery under spinal anesthesia. SBP and heart rate were measured continuously using a Nexfin monitor. ADIVA delivered 25 μg phenylephrine (heart rate > 60 beats.min-1) or 2 mg ephedrine (heart rate < 60 beats.min-1) at SBP 90 to 110% of baseline, 50 μg phenylephrine or 4 mg ephedrine at SBP 80 to 90%, and 75 μg phenylephrine or 6 mg ephedrine at SBP < 80%. ADIVA calculated the trend of SBP; vasopressors were administered rapidly if SBP trended downward, or 30 s if SBP trended upward. In contrast, DIVA delivered 25 μg phenylephrine or 2 mg ephedrine at SBP 90 to 100% of baseline, and 50 μg phenylephrine or 4 mg ephedrine at SBP < 90%. Boluses were followed by a 10-s lockout. Other outcomes included hypertension (SBP > 120% baseline), vasopressor consumption, clinical outcomes, and performance measures from spinal anesthesia to fetal delivery. RESULTS We analyzed 94 parturients (ADIVA: n = 46, DIVA: n = 48), with no difference in the incidence of hypotension between ADIVA (78.3%) and DIVA (83.3%, p = 0.677). ADIVA had significantly higher proportion of hypotensive SBP readings, lower phenylephrine consumption and higher umbilical arterial pH. There was no difference in hypertension, bradycardia, ephedrine consumption, intravenous fluid volume, nausea/vomiting, Apgar scores, and umbilical venous pH or lactate. ADIVA maintained SBP higher above baseline with greater fluctuation than DIVA. CONCLUSION ADIVA was associated with a greater proportion of hypotensive SBP readings, reduced phenylephrine consumption, and increased umbilical arterial pH than DIVA. Further research is needed to determine the optimal method of vasopressor delivery in parturients undergoing cesarean delivery. TRIAL REGISTRATION This study was registered on Clinicaltrials.gov registry (NCT03620942) on 08/08/2018.
Collapse
Affiliation(s)
- Hon Sen Tan
- grid.414963.d0000 0000 8958 3388Department of Women’s Anesthesia, KK Women’s and Children’s Hospital, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Anesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - Singaraselvan Nagarajan
- grid.414963.d0000 0000 8958 3388Department of Women’s Anesthesia, KK Women’s and Children’s Hospital, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Anesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - Jason Ju In Chan
- grid.414963.d0000 0000 8958 3388Department of Women’s Anesthesia, KK Women’s and Children’s Hospital, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Anesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - Chin Wen Tan
- grid.414963.d0000 0000 8958 3388Department of Women’s Anesthesia, KK Women’s and Children’s Hospital, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Anesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - Rehena Sultana
- grid.428397.30000 0004 0385 0924Center for Quantitative Medicine, Duke-NUS Medical School, Singapore, Singapore
| | - Alex Tiong Heng Sia
- grid.414963.d0000 0000 8958 3388Department of Women’s Anesthesia, KK Women’s and Children’s Hospital, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Anesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| | - Ban Leong Sng
- grid.414963.d0000 0000 8958 3388Department of Women’s Anesthesia, KK Women’s and Children’s Hospital, Singapore, Singapore ,grid.428397.30000 0004 0385 0924Anesthesiology and Perioperative Sciences Academic Clinical Program, Duke-NUS Medical School, Singapore, Singapore
| |
Collapse
|
7
|
Rinehart J, Desebbe O, Berna A, Lam I, Coeckelenbergh S, Cannesson M, Joosten A. Systolic Arterial Pressure Control Using an Automated Closed-Loop System for Vasopressor Infusion during Intermediate-to-High-Risk Surgery: A Feasibility Study. J Pers Med 2022; 12:jpm12101554. [PMID: 36294696 PMCID: PMC9604572 DOI: 10.3390/jpm12101554] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/18/2022] [Accepted: 09/20/2022] [Indexed: 11/19/2022] Open
Abstract
Introduction: Vasopressor infusions are essential in treating and preventing intraoperative hypotension. Closed-loop vasopressor therapy outperforms clinicians when the target is set at a mean arterial pressure (MAP) baseline, but little is known on the performance metrics of closed-loop vasopressor infusions when systolic arterial pressure (SAP) is the controlled variable. Methods: Patients undergoing intermediate- to high-risk abdominal surgery were included in this prospective cohort feasibility study. All patients received norepinephrine infusion through a computer controlled closed-loop system that targeted SAP at 130 mmHg. The primary objective was to determine the percent of case time in hypotension or under target defined as SAP below 10% of the target (SAP < 117 mmHg). Secondary objectives were the percent of case time “above target” (SAP > 10% of the target or >143 mmHg) and “in target” (within 10% of the SAP target or SAP between 117 and 143 mmHg). Results: A total of 12 patients were included. The closed-loop system infused norepinephrine for a median of 94.6% (25−75th percentile: 90.0−98.0%) of case time. The percentage of case time in hypotension or under target was only 1.8% (0.9−3.6%). The percentages of case time “above target” and “in target” were 4.7% (3.2−7.5%) and 92.4% (90.1−96.3%), respectively. Conclusions: This closed-loop vasopressor system minimizes intraoperative hypotension and maintains SAP within 10% of the target range for >90% of the case time in patients undergoing intermediate- to high-risk abdominal surgery.
Collapse
Affiliation(s)
- Joseph Rinehart
- Department of Anesthesiology & Perioperative Care, University of California Irvine, 101 The City Drive South, Irvine, CA 92868, USA
| | - Olivier Desebbe
- Department of Anesthesiology and Perioperative Medicine, Sauvegarde Clinic, Ramsay Santé, 69009 Lyon, France
| | - Antoine Berna
- Department of Anesthesiology and Perioperative Medicine, Sauvegarde Clinic, Ramsay Santé, 69009 Lyon, France
| | - Isaac Lam
- Department of Anesthesiology & Perioperative Care, University of California Irvine, 101 The City Drive South, Irvine, CA 92868, USA
| | - Sean Coeckelenbergh
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles, 808 Route de Lennik, 1070 Brussels, Belgium
- Department of Anesthesiology and Intensive Care, Groupe Universitaire Paris-Saclay, Paul Brousse Hospital, Assistance Publique-Hôpitaux de Paris (APHP), 94800 Villejuif, France
| | - Maxime Cannesson
- Department of Anesthesiology & Perioperative Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Alexandre Joosten
- Department of Anesthesiology, Erasme University Hospital, Université Libre de Bruxelles, 808 Route de Lennik, 1070 Brussels, Belgium
- Department of Anesthesiology and Intensive Care, Groupe Universitaire Paris-Saclay, Paul Brousse Hospital, Assistance Publique-Hôpitaux de Paris (APHP), 94800 Villejuif, France
- Correspondence:
| |
Collapse
|
8
|
Hardware-in-Loop Comparison of Physiological Closed-Loop Controllers for the Autonomous Management of Hypotension. Bioengineering (Basel) 2022; 9:bioengineering9090420. [PMID: 36134966 PMCID: PMC9495383 DOI: 10.3390/bioengineering9090420] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/20/2022] [Accepted: 08/21/2022] [Indexed: 11/30/2022] Open
Abstract
Trauma and hemorrhage are leading causes of death and disability worldwide in both civilian and military contexts. The delivery of life-saving goal-directed fluid resuscitation can be difficult to provide in resource-constrained settings, such as in forward military positions or mass-casualty scenarios. Automated solutions for fluid resuscitation could bridge resource gaps in these austere settings. While multiple physiological closed-loop controllers for the management of hypotension have been proposed, to date there is no consensus on controller design. Here, we compare the performance of four controller types—decision table, single-input fuzzy logic, dual-input fuzzy logic, and proportional–integral–derivative using a previously developed hardware-in-loop test platform where a range of hemorrhage scenarios can be programmed. Controllers were compared using traditional controller performance metrics, but conclusions were difficult to draw due to inconsistencies across the metrics. Instead, we propose three aggregate metrics that reflect the target intensity, stability, and resource efficiency of a controller, with the goal of selecting controllers for further development. These aggregate metrics identify a dual-input, fuzzy-logic-based controller as the preferred combination of intensity, stability, and resource efficiency within this use case. Based on these results, the aggressively tuned dual-input fuzzy logic controller should be considered a priority for further development.
Collapse
|
9
|
Snider EJ, Berard D, Vega SJ, Hernandez Torres SI, Avital G, Boice EN. An Automated Hardware-in-Loop Testbed for Evaluating Hemorrhagic Shock Resuscitation Controllers. Bioengineering (Basel) 2022; 9:373. [PMID: 36004898 PMCID: PMC9405047 DOI: 10.3390/bioengineering9080373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/03/2022] [Accepted: 08/03/2022] [Indexed: 12/04/2022] Open
Abstract
Hemorrhage remains a leading cause of death, with early goal-directed fluid resuscitation being a pillar of mortality prevention. While closed-loop resuscitation can potentially benefit this effort, development of these systems is resource-intensive, making it a challenge to compare infusion controllers and respective hardware within a range of physiologically relevant hemorrhage scenarios. Here, we present a hardware-in-loop automated testbed for resuscitation controllers (HATRC) that provides a simple yet robust methodology to evaluate controllers. HATRC is a flow-loop benchtop system comprised of multiple PhysioVessels which mimic pressure-volume responsiveness for different resuscitation infusates. Subject variability and infusate switching were integrated for more complex testing. Further, HATRC can modulate fluidic resistance to mimic arterial resistance changes after vasopressor administration. Finally, all outflow rates are computer-controlled, with rules to dictate hemorrhage, clotting, and urine rates. Using HATRC, we evaluated a decision-table controller at two sampling rates with different hemorrhage scenarios. HATRC allows quantification of twelve performance metrics for each controller configuration and scenario, producing heterogeneous results and highlighting the need for controller evaluation with multiple hemorrhage scenarios. In conclusion, HATRC can be used to evaluate closed-loop controllers through user-defined hemorrhage scenarios while rating their performance. Extensive controller troubleshooting using HATRC can accelerate product development and subsequent translation.
Collapse
Affiliation(s)
- Eric. J. Snider
- U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA
| | - David Berard
- U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA
| | - Saul J. Vega
- U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA
| | | | - Guy Avital
- U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA
- Trauma and Combat Medicine Branch, Surgeon General’s Headquarters, Israel Defense Forces, Ramat-Gan 52620, Israel
- Division of Anesthesia, Intensive Care and Pain Management, Tel-Aviv Sourasky Medical Center, Tel-Aviv 64239, Israel
| | - Emily N. Boice
- U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA
| |
Collapse
|
10
|
Closed-Loop Controlled Fluid Administration Systems: A Comprehensive Scoping Review. J Pers Med 2022; 12:jpm12071168. [PMID: 35887665 PMCID: PMC9315597 DOI: 10.3390/jpm12071168] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 02/07/2023] Open
Abstract
Physiological Closed-Loop Controlled systems continue to take a growing part in clinical practice, offering possibilities of providing more accurate, goal-directed care while reducing clinicians’ cognitive and task load. These systems also provide a standardized approach for the clinical management of the patient, leading to a reduction in care variability across multiple dimensions. For fluid management and administration, the advantages of closed-loop technology are clear, especially in conditions that require precise care to improve outcomes, such as peri-operative care, trauma, and acute burn care. Controller design varies from simplistic to complex designs, based on detailed physiological models and adaptive properties that account for inter-patient and intra-patient variability; their maturity level ranges from theoretical models tested in silico to commercially available, FDA-approved products. This comprehensive scoping review was conducted in order to assess the current technological landscape of this field, describe the systems currently available or under development, and suggest further advancements that may unfold in the coming years. Ten distinct systems were identified and discussed.
Collapse
|
11
|
Patel NTP, Goenaga-Diaz EJ, Lane MR, Austin Johnson M, Neff LP, Williams TK. Closed-loop automated critical care as proof-of-concept study for resuscitation in a swine model of ischemia-reperfusion injury. Intensive Care Med Exp 2022; 10:30. [PMID: 35799034 PMCID: PMC9263023 DOI: 10.1186/s40635-022-00459-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 06/27/2022] [Indexed: 12/05/2022] Open
Abstract
Background Volume expansion and vasopressors for the treatment of shock is an intensive process that requires frequent assessments and adjustments. Strict blood pressure goals in multiple physiologic states of shock (traumatic brain injury, sepsis, and hemorrhagic) have been associated with improved outcomes. The availability of continuous physiologic data is amenable to closed-loop automated critical care to improve goal-directed resuscitation. Methods Five adult swine were anesthetized and subjected to a controlled 30% estimated total blood volume hemorrhage followed by 30 min of complete supra-celiac aortic occlusion and then autotransfusion back to euvolemia with removal of aortic balloon. The animals underwent closed-loop critical care for 255 min after removal of the endovascular aortic balloon. The closed-loop critical care algorithm used proximal aortic pressure and central venous pressure as physiologic input data. The algorithm had the option to provide programmatic control of pumps for titration of vasopressors and weight-based crystalloid boluses (5 ml/kg) to maintain a mean arterial pressure between 60 and 70 mmHg. Results During the 255 min of critical care the animals experienced hypotension (< 60 mmHg) 15.3% (interquartile range: 8.6–16.9%), hypertension (> 70 mmHg) 7.7% (interquartile range: 6.7–9.4%), and normotension (60–70 mmHg) 76.9% (interquartile range: 76.5–81.2%) of the time. Excluding the first 60 min of the critical care phase the animals experienced hypotension 1.0% (interquartile range: 0.5–6.7%) of the time. Median intervention rate was 8.47 interventions per hour (interquartile range: 7.8–9.2 interventions per hour). The proportion of interventions was 61.5% (interquartile range: 61.1–66.7%) weight-based crystalloid boluses and 38.5% (interquartile range: 33.3–38.9%) titration of vasopressors. Conclusion This autonomous critical care platform uses critical care adjuncts in an ischemia–reperfusion injury model, utilizing goal-directed closed-loop critical care algorithm and device actuation. This description highlights the potential for this approach to deliver nuanced critical care in the ICU environment, thereby optimizing resuscitative efforts and expanding capabilities through cognitive offloading. Future efforts will focus on optimizing this platform through comparative studies of inputs, therapies, and comparison to manual critical care. Supplementary Information The online version contains supplementary material available at 10.1186/s40635-022-00459-2.
Collapse
Affiliation(s)
- Nathan T P Patel
- Department of Surgery, Wake Forest Baptist Medical Center, Hanes Building, B005, One Medical Center Boulevard, Winston-Salem, NC, 27157, USA.
| | - Eduardo J Goenaga-Diaz
- Division of Cardiac Anesthesiology, Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Magan R Lane
- Department of Cardiothoracic Surgery, Wake Forest Baptist Medical Center, Winston-Salem, NC, USA
| | - M Austin Johnson
- Division of Emergency Medicine, University of Utah, Salt Lake City, UT, USA
| | - Lucas P Neff
- Department of Pediatric Surgery, Wake Forest Baptist Medical Center, Winston-Salem, NC, USA
| | - Timothy K Williams
- Department of Vascular/Endovascular Surgery, Wake Forest Baptist Medical Center, Winston-Salem, NC, USA
| |
Collapse
|
12
|
Snider EJ, Vega SJ, Ross E, Berard D, Hernandez-Torres SI, Salinas J, Boice EN. Supervisory Algorithm for Autonomous Hemodynamic Management Systems. SENSORS (BASEL, SWITZERLAND) 2022; 22:529. [PMID: 35062489 PMCID: PMC8780453 DOI: 10.3390/s22020529] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/07/2022] [Accepted: 01/09/2022] [Indexed: 02/04/2023]
Abstract
Future military conflicts will require new solutions to manage combat casualties. The use of automated medical systems can potentially address this need by streamlining and augmenting the delivery of medical care in both emergency and combat trauma environments. However, in many situations, these systems may need to operate in conjunction with other autonomous and semi-autonomous devices. Management of complex patients may require multiple automated systems operating simultaneously and potentially competing with each other. Supervisory controllers capable of harmonizing multiple closed-loop systems are thus essential before multiple automated medical systems can be deployed in managing complex medical situations. The objective for this study was to develop a Supervisory Algorithm for Casualty Management (SACM) that manages decisions and interplay between two automated systems designed for management of hemorrhage control and resuscitation: an automatic extremity tourniquet system and an adaptive resuscitation controller. SACM monitors the required physiological inputs for both systems and synchronizes each respective system as needed. We present a series of trauma experiments carried out in a physiologically relevant benchtop circulatory system in which SACM must recognize extremity or internal hemorrhage, activate the corresponding algorithm to apply a tourniquet, and then resuscitate back to the target pressure setpoint. SACM continues monitoring after the initial stabilization so that additional medical changes can be quickly identified and addressed, essential to extending automation algorithms past initial trauma resuscitation into extended monitoring. Overall, SACM is an important step in transitioning automated medical systems into emergency and combat trauma situations. Future work will address further interplay between these systems and integrate additional medical systems.
Collapse
Affiliation(s)
- Eric J. Snider
- Engineering, Technology, and Automation Group, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA; (E.J.S.); (S.J.V.); (D.B.); (S.I.H.-T.); (J.S.)
| | - Saul J. Vega
- Engineering, Technology, and Automation Group, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA; (E.J.S.); (S.J.V.); (D.B.); (S.I.H.-T.); (J.S.)
| | - Evan Ross
- Blood and Shock Resuscitation Group, United States Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA;
| | - David Berard
- Engineering, Technology, and Automation Group, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA; (E.J.S.); (S.J.V.); (D.B.); (S.I.H.-T.); (J.S.)
| | - Sofia I. Hernandez-Torres
- Engineering, Technology, and Automation Group, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA; (E.J.S.); (S.J.V.); (D.B.); (S.I.H.-T.); (J.S.)
| | - Jose Salinas
- Engineering, Technology, and Automation Group, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA; (E.J.S.); (S.J.V.); (D.B.); (S.I.H.-T.); (J.S.)
| | - Emily N. Boice
- Engineering, Technology, and Automation Group, U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA; (E.J.S.); (S.J.V.); (D.B.); (S.I.H.-T.); (J.S.)
| |
Collapse
|
13
|
AIM in Anesthesiology. Artif Intell Med 2022. [DOI: 10.1007/978-3-030-64573-1_246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
14
|
Tivay A, Kramer GC, Hahn JO. Collective Variational Inference for Personalized and Generative Physiological Modeling: A Case Study on Hemorrhage Resuscitation. IEEE Trans Biomed Eng 2021; 69:666-677. [PMID: 34375275 DOI: 10.1109/tbme.2021.3103141] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Individual physiological experiments typically provide useful but incomplete information about a studied physiological process. As a result, inferring the unknown parameters of a physiological model from experimental data is often challenging. The objective of this paper is to propose and illustrate the efficacy of a collective variational inference (C-VI) method, intended to reconcile low-information and heterogeneous data from a collection of experiments to produce robust personalized and generative physiological models. METHODS To derive the C-VI method, we utilize a probabilistic graphical model to impose structure on the available physiological data, and algorithmically characterize the graphical model using variational Bayesian inference techniques. To illustrate the efficacy of the C-VI method, we apply it to a case study on the mathematical modeling of hemorrhage resuscitation. RESULTS In the context of hemorrhage resuscitation modeling, the C-VI method could reconcile heterogeneous combinations of hematocrit, cardiac output, and blood pressure data across multiple experiments to obtain (i) robust personalized models along with associated measures of uncertainty and signal quality, and (ii) a generative model capable of reproducing the physiological behavior of the population. CONCLUSION The C-VI method facilitates the personalized and generative modeling of physiological processes in the presence of low-information and heterogeneous data. SIGNIFICANCE The resulting models provide a solid basis for the development and testing of interpretable physiological monitoring, decision-support, and closed-loop control algorithms.
Collapse
|
15
|
Joosten A, Rinehart J, Van der Linden P, Alexander B, Penna C, De Montblanc J, Cannesson M, Vincent JL, Vicaut E, Duranteau J. Computer-assisted Individualized Hemodynamic Management Reduces Intraoperative Hypotension in Intermediate- and High-risk Surgery: A Randomized Controlled Trial. Anesthesiology 2021; 135:258-272. [PMID: 33951140 PMCID: PMC8277754 DOI: 10.1097/aln.0000000000003807] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Individualized hemodynamic management during surgery relies on accurate titration of vasopressors and fluids. In this context, computer systems have been developed to assist anesthesia providers in delivering these interventions. This study tested the hypothesis that computer-assisted individualized hemodynamic management could reduce intraoperative hypotension in patients undergoing intermediate- to high-risk surgery. METHODS This single-center, parallel, two-arm, prospective randomized controlled single blinded superiority study included 38 patients undergoing abdominal or orthopedic surgery. All included patients had a radial arterial catheter inserted after anesthesia induction and connected to an uncalibrated pulse contour monitoring device. In the manually adjusted goal-directed therapy group (N = 19), the individualized hemodynamic management consisted of manual titration of norepinephrine infusion to maintain mean arterial pressure within 10% of the patient's baseline value, and mini-fluid challenges to maximize the stroke volume index. In the computer-assisted group (N = 19), the same approach was applied using a closed-loop system for norepinephrine adjustments and a decision-support system for the infusion of mini-fluid challenges (100 ml). The primary outcome was intraoperative hypotension defined as the percentage of intraoperative case time patients spent with a mean arterial pressure of less than 90% of the patient's baseline value, measured during the preoperative screening. Secondary outcome was the incidence of minor postoperative complications. RESULTS All patients were included in the analysis. Intraoperative hypotension was 1.2% [0.4 to 2.0%] (median [25th to 75th] percentiles) in the computer-assisted group compared to 21.5% [14.5 to 31.8%] in the manually adjusted goal-directed therapy group (difference, -21.1 [95% CI, -15.9 to -27.6%]; P < 0.001). The incidence of minor postoperative complications was not different between groups (42 vs. 58%; P = 0.330). Mean stroke volume index and cardiac index were both significantly higher in the computer-assisted group than in the manually adjusted goal-directed therapy group (P < 0.001). CONCLUSIONS In patients having intermediate- to high-risk surgery, computer-assisted individualized hemodynamic management significantly reduces intraoperative hypotension compared to a manually controlled goal-directed approach. EDITOR’S PERSPECTIVE
Collapse
Affiliation(s)
- Alexandre Joosten
- Department of Anesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
- Department of Anesthesiology and Intensive Care, Paris-Saclay University, Bicêtre Hospital, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| | - Joseph Rinehart
- Department of Anesthesiology & Perioperative Care, University of California Irvine, California, USA
| | - Philippe Van der Linden
- Department of Anesthesiology, Brugmann Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Brenton Alexander
- Department of Anesthesiology, University of California San Diego, California, USA
| | - Christophe Penna
- Department of Gastro-intestinal Surgery, Paris-Saclay University, Bicêtre Hospital, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| | - Jacques De Montblanc
- Department of Anesthesiology and Intensive Care, Paris-Saclay University, Bicêtre Hospital, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| | - Maxime Cannesson
- Department of Anesthesiology & Perioperative Medicine, David Geffen School of Medicine, University of California Los Angeles, California, USA
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Eric Vicaut
- Unité de Recherche Clinique, Lariboisière, Paris 7 Diderot University, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Jacques Duranteau
- Department of Anesthesiology and Intensive Care, Paris-Saclay University, Bicêtre Hospital, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| |
Collapse
|
16
|
Gholami B, Haddad WM, Bailey JM, Muir WW. Closed-Loop Control for Fluid Resuscitation: Recent Advances and Future Challenges. Front Vet Sci 2021; 8:642440. [PMID: 33708814 PMCID: PMC7940185 DOI: 10.3389/fvets.2021.642440] [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: 12/16/2020] [Accepted: 02/02/2021] [Indexed: 11/13/2022] Open
Abstract
Fluid therapy is extensively used to treat traumatized patients as well as patients during surgery. The fluid therapy process is complex due to interpatient variability in response to therapy as well as other complicating factors such as comorbidities and general anesthesia. These complexities can result in under- or over-resuscitation. Given the complexity of the fluid management process as well as the increased capabilities in hemodynamic monitoring, closed-loop fluid management can reduce the workload of the overworked clinician while ensuring specific constraints on hemodynamic endpoints are met with higher accuracy. The goal of this paper is to provide an overview of closed-loop control systems for fluid management and highlight several key steps in transitioning such a technology from bench to the bedside.
Collapse
Affiliation(s)
| | - Wassim M Haddad
- School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, United States
| | - James M Bailey
- Northeast Georgia Medical Center, Gainesville, GA, United States
| | - William W Muir
- College of Veterinary Medicine, Lincoln Memorial University, Harrogate, TN, United States
| |
Collapse
|
17
|
Joosten A, Chirnoaga D, Van der Linden P, Barvais L, Alexander B, Duranteau J, Vincent JL, Cannesson M, Rinehart J. Automated closed-loop versus manually controlled norepinephrine infusion in patients undergoing intermediate- to high-risk abdominal surgery: a randomised controlled trial. Br J Anaesth 2021; 126:210-218. [PMID: 33041014 PMCID: PMC8489152 DOI: 10.1016/j.bja.2020.08.051] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/07/2020] [Accepted: 08/05/2020] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Hypotension occurs frequently during surgery and may be associated with adverse complications. Vasopressor titration is frequently used to correct hypotension, but requires considerable time and attention, potentially reducing the time available for other clinical duties. To overcome this issue, we have developed a closed-loop vasopressor (CLV) controller to help correct hypotension more efficiently. The aim of this randomised controlled study was to evaluate whether the CLV controller was superior to traditional vasopressor management at minimising hypotension in patients undergoing abdominal surgery. METHODS Thirty patients scheduled for elective intermediate-to high-risk abdominal surgery were randomised into two groups. In the CLV group, hypotension was corrected automatically via the CLV controller system, which adjusted the rate of a norepinephrine infusion according to MAP values recorded using an advanced haemodynamic device. In the control group, management of hypotension consisted of standard, manual adjustment of the norepinephrine infusion. The primary outcome was the percentage of time that a patient was hypotensive, defined as MAP <90% of their baseline value, during surgery. RESULTS The percentage of time patients were hypotensive during surgery was 10 times less in the CVL group than in the control group (1.6 [0.9-2.3]% vs 15.4 [9.9-24.3]%; difference: 13 [95% confidence interval: 9-19]; P<0.0001). The CVL group also spent much less time with MAP <65 mm Hg (0.2 [0.0-0.4]% vs 4.5 [1.1-7.9]%; P<0.0001). CONCLUSIONS In patients undergoing intermediate- to high-risk surgery under general anaesthesia, computer-assisted adjustment of norepinephrine infusion significantly decreases the incidence of hypotension compared with manual control. CLINICAL TRIAL REGISTRATION NCT04089644.
Collapse
Affiliation(s)
- Alexandre Joosten
- Department of Anaesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium,Department of Anaesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Sud, Université Paris-Sud, Université Paris-Saclay, Hôpital De Bicêtre, Assistance Publique Hôpitaux de Paris, Le Kremlin-Bicêtre, France,Corresponding author.
| | - Dragos Chirnoaga
- Department of Anaesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Philippe Van der Linden
- Department of Anaesthesiology, Brugmann Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Luc Barvais
- Department of Anaesthesiology, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Brenton Alexander
- Department of Anesthesiology, University of California San Diego, San Diego, CA, USA
| | - Jacques Duranteau
- Department of Anaesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Sud, Université Paris-Sud, Université Paris-Saclay, Hôpital De Bicêtre, Assistance Publique Hôpitaux de Paris, Le Kremlin-Bicêtre, France
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Maxime Cannesson
- Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Joseph Rinehart
- Department of Anesthesiology and Perioperative Care, University of California Irvine, Irvine, CA, USA
| |
Collapse
|
18
|
Komorowski M, Joosten A. AIM in Anesthesiology. Artif Intell Med 2021. [DOI: 10.1007/978-3-030-58080-3_246-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
19
|
Convertino VA, Schauer SG, Weitzel EK, Cardin S, Stackle ME, Talley MJ, Sawka MN, Inan OT. Wearable Sensors Incorporating Compensatory Reserve Measurement for Advancing Physiological Monitoring in Critically Injured Trauma Patients. SENSORS (BASEL, SWITZERLAND) 2020; 20:E6413. [PMID: 33182638 PMCID: PMC7697670 DOI: 10.3390/s20226413] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/02/2020] [Accepted: 11/04/2020] [Indexed: 12/21/2022]
Abstract
Vital signs historically served as the primary method to triage patients and resources for trauma and emergency care, but have failed to provide clinically-meaningful predictive information about patient clinical status. In this review, a framework is presented that focuses on potential wearable sensor technologies that can harness necessary electronic physiological signal integration with a current state-of-the-art predictive machine-learning algorithm that provides early clinical assessment of hypovolemia status to impact patient outcome. The ability to study the physiology of hemorrhage using a human model of progressive central hypovolemia led to the development of a novel machine-learning algorithm known as the compensatory reserve measurement (CRM). Greater sensitivity, specificity, and diagnostic accuracy to detect hemorrhage and onset of decompensated shock has been demonstrated by the CRM when compared to all standard vital signs and hemodynamic variables. The development of CRM revealed that continuous measurements of changes in arterial waveform features represented the most integrated signal of physiological compensation for conditions of reduced systemic oxygen delivery. In this review, detailed analysis of sensor technologies that include photoplethysmography, tonometry, ultrasound-based blood pressure, and cardiogenic vibration are identified as potential candidates for harnessing arterial waveform analog features required for real-time calculation of CRM. The integration of wearable sensors with the CRM algorithm provides a potentially powerful medical monitoring advancement to save civilian and military lives in emergency medical settings.
Collapse
Affiliation(s)
- Victor A. Convertino
- Battlefield Health & Trauma Center for Human Integrative Physiology, US Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA;
- Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA;
| | - Steven G. Schauer
- Battlefield Health & Trauma Center for Human Integrative Physiology, US Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA;
- Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA;
- Brooke Army Medical Center, JBSA Fort Sam Houston, San Antonio, TX 78234, USA
| | - Erik K. Weitzel
- Uniformed Services University of the Health Sciences, Bethesda, MD 20814, USA;
- Brooke Army Medical Center, JBSA Fort Sam Houston, San Antonio, TX 78234, USA
- 59th Medical Wing, JBSA Lackland, San Antonio, TX 78236, USA
| | - Sylvain Cardin
- Navy Medical Research Unit, JBSA Fort Sam Houston, San Antonio, TX 78234, USA;
| | - Mark E. Stackle
- Commander, US Army Institute of Surgical Research, JBSA Fort Sam Houston, San Antonio, TX 78234, USA;
| | - Michael J. Talley
- Commanding General, US Army Medical Research and Development Command, Fort Detrick, Frederick, MD 21702, USA;
| | - Michael N. Sawka
- Georgia Institute of Technology, Atlanta, GA 30332, USA; (M.N.S.); (O.T.I.)
| | - Omer T. Inan
- Georgia Institute of Technology, Atlanta, GA 30332, USA; (M.N.S.); (O.T.I.)
| |
Collapse
|
20
|
Rinehart J, Lee S, Saugel B, Joosten A. Automated Blood Pressure Control. Semin Respir Crit Care Med 2020; 42:47-58. [PMID: 32746471 DOI: 10.1055/s-0040-1713083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Arterial pressure management is a crucial task in the operating room and intensive care unit. In high-risk surgical and in critically ill patients, sustained hypotension is managed with continuous infusion of vasopressor agents, which most commonly have direct α agonist activity like phenylephrine or norepinephrine. The current standard of care to guide vasopressor infusion is manual titration to an arterial pressure target range. This approach may be improved by using automated systems that titrate vasopressor infusions to maintain a target pressure. In this article, we review the evidence behind blood pressure management in the operating room and intensive care unit and discuss current and potential future applications of automated blood pressure control.
Collapse
Affiliation(s)
- Joseph Rinehart
- Department of Anesthesiology and Perioperative Care, University of California Irvine, Orange, California
| | - Sean Lee
- Department of Anesthesiology and Perioperative Care, University of California Irvine, Orange, California
| | - Bernd Saugel
- Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Outcomes Research Consortium, Cleveland, Ohio
| | - Alexandre Joosten
- Department of Anesthesiology, Erasme Hospital, Brussels, Belgium.,Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Sud, Université Paris-Sud, Université Paris-Saclay, Hôpital De Bicêtre, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| |
Collapse
|
21
|
Libert N, Chenegros G, Harrois A, Baudry N, Decante B, Cordurie G, Benosman R, Mercier O, Vicaut E, Duranteau J. Performance of closed-loop resuscitation in a pig model of haemorrhagic shock with fluid alone or in combination with norepinephrine, a pilot study. J Clin Monit Comput 2020; 35:835-847. [PMID: 32533529 DOI: 10.1007/s10877-020-00542-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 05/28/2020] [Indexed: 11/25/2022]
Abstract
We evaluated the performance of a new device to control the administration of fluid alone or co-administration of fluid and norepinephrine in a pig model of haemorrhagic shock in two sets of experiments. In the first one, resuscitation was guided using continuous arterial pressure measurements (three groups: resuscitation with fluid by a physician, CL resuscitation with fluid, and CL resuscitation with fluid and norepinephrine). In the second one, resuscitation was guided using discontinuous arterial pressure measurements (three groups: CL resuscitation with fluid alone, CL resuscitation with fluid and moderate dose norepinephrine, and CL resuscitation with fluid and a high dose of norepinephrine). Pigs were resuscitated for 1 h. In the first set of experiments, proportion of time spent in the target area of 78-88 mmHg of systolic arterial pressure was not statistically different between the three groups: manual, 71.2% (39.1-80.1); CL with fluid, 87.8% (68.3-97.4); and CL with fluid and norepinephrine, 78.1% (59.2-83.6), p = 0.151. In the second set of experiments, performance of CL resuscitation with fluid or with combination of fluid and high or moderate dose of norepinephrine was not significantly different (p = 0.543 for time in target). Pigs resuscitated with norepinephrine required less fluid and had less haemodilution than pigs resuscitated with fluid alone. Performance of CL resuscitation using continuous arterial pressure measurement was not significantly different than optimised manual treatment by a dedicated physician. Performance of CL resuscitation was reduced with discontinuous arterial pressure measurements in comparison with continuous arterial pressure measurements.
Collapse
Affiliation(s)
- Nicolas Libert
- Laboratoire d'Étude de la Microcirculation, UMR 942, Université Paris, 7-11-13, Paris, France.,Service d'Anesthésie-Réanimation, Hôpital d'instruction des armées Percy, Clamart, France
| | - Guillaume Chenegros
- Institut de la Vision UMR-S 968, Sorbonne Université, Université Pierre et Marie Curie UPMC, Paris, France
| | - Anatole Harrois
- Laboratoire d'Étude de la Microcirculation, UMR 942, Université Paris, 7-11-13, Paris, France.,Service d'Anesthésie-Réanimation Chirurgicale, Hôpital de Bicêtre, Université Paris-Sud, Hôpitaux Universitaires Paris-Sud, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre, France
| | - Nathalie Baudry
- Laboratoire d'Étude de la Microcirculation, UMR 942, Université Paris, 7-11-13, Paris, France
| | - Benoit Decante
- Unité de Recherche et d'innovation, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Gilles Cordurie
- Institut de la Vision UMR-S 968, Sorbonne Université, Université Pierre et Marie Curie UPMC, Paris, France
| | - Ryad Benosman
- Institut de la Vision UMR-S 968, Sorbonne Université, Université Pierre et Marie Curie UPMC, Paris, France
| | - Olaf Mercier
- École de médecine, Université Paris-Sud et Paris-Saclay, Kremlin-Bicêtre, France.,Département de Chirurgie Thoracique et Vasculaire et Transplantation cœur-Poumon, DHU Thorax Innovation, INSERM UMR-S 999, LabEx LERMIT, Hôpital Marie Lannelongue, Le Plessis Robinson, France
| | - Eric Vicaut
- Laboratoire d'Étude de la Microcirculation, UMR 942, Université Paris, 7-11-13, Paris, France.,Unité de Recherche Clinique, Université Paris 7, Hôpitaux Saint Louis Lariboisière, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Jacques Duranteau
- Laboratoire d'Étude de la Microcirculation, UMR 942, Université Paris, 7-11-13, Paris, France. .,Service d'Anesthésie-Réanimation Chirurgicale, Hôpital de Bicêtre, Université Paris-Sud, Hôpitaux Universitaires Paris-Sud, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicêtre, France.
| |
Collapse
|
22
|
Impact of high-dose norepinephrine during intra-hospital damage control resuscitation of traumatic haemorrhagic shock: A propensity-score analysis. Injury 2020; 51:1164-1171. [PMID: 31791590 DOI: 10.1016/j.injury.2019.11.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 11/17/2019] [Accepted: 11/23/2019] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The use of norepinephrine (NE) during uncontrolled haemorrhagic shock (HS) has mostly been investigated in experimental studies. Clinical data including norepinephrine dose and its impact on fluid resuscitation and organ function are scarce. We hypothesized that there is great variability in NE use and that high doses of NE could lead to increased organ dysfunction as measured by the sequential organ failure assessment (SOFA). METHOD We included patients with HS (systolic blood pressure < 90 mmHg in severely injured patients) who required haemostasis surgery and a transfusion of more than 4 packed red blood cells (PRBC) in the first 6 h of admission and the used of norepinephrine infusion to maintain the blood pressure goal, between admission and the end of haemostasis surgery in a prospective trauma database. A ROC curve determined that, using Youden's criterion, a dose of NE ≥ 0.6 µg/kg/min was the optimal threshold associated with intrahospital mortality. Patients were compared according to this threshold in a propensity score (PS) model. In a generalized linear mixed model, we searched for independent factors associated with a SOFA ≥ 9 at 24 h RESULTS: A total of 89 patients were analysed. Fluid infusion rate ranged from 1.43 to 57.9 mL/kg/h and norepinephrine infusion rate from 0.1 to 2.8 µg/kg/min. The HDNE group received significantly less fluid than the LDNE group. This dose is associated with a higher SOFA score at 24h: 9 (7-10) vs. 7 (6-9) (p = 0.003). Factors independently associated with a SOFA score ≥ 9 at 24 h were maximal norepinephrine rate ≥ 0.6 µg/kg/min (OR 6.69, 95% CI 1.82 - 25.54; p = 0.004), non-blood resuscitation volume < 9 mL/kg/h (OR 3.98, 95% CI 1.14 - 13.95; p = 0.031) and lactate at admission ≥ 5 mmol/L (OR 5.27, 95% CI 1.48 - 18.77; p = 0.010) CONCLUSION: High dose of norepinephrine infusion is associated with deleterious effects as attested by a higher SOFA score at 24 h and likely hypovolemia as measured by reduced non-blood resuscitation volume. We did not find any significant difference in mortality over the long term.
Collapse
|
23
|
Zaouter C, Joosten A, Rinehart J, Struys MMRF, Hemmerling TM. Autonomous Systems in Anesthesia. Anesth Analg 2020; 130:1120-1132. [DOI: 10.1213/ane.0000000000004646] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
24
|
Automated systems for perioperative goal-directed hemodynamic therapy. J Anesth 2019; 34:104-114. [DOI: 10.1007/s00540-019-02683-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Accepted: 09/16/2019] [Indexed: 02/07/2023]
|
25
|
Joosten A, Alexander B, Duranteau J, Taccone FS, Creteur J, Vincent JL, Cannesson M, Rinehart J. Feasibility of closed-loop titration of norepinephrine infusion in patients undergoing moderate- and high-risk surgery. Br J Anaesth 2019; 123:430-438. [PMID: 31255290 DOI: 10.1016/j.bja.2019.04.064] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/09/2019] [Accepted: 05/08/2019] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Vasopressor agents are used to prevent intraoperative hypotension and ensure adequate perfusion. Vasopressors are usually administered as intermittent boluses or manually adjusted infusions, but this practice requires considerable time and attention. We have developed a closed-loop vasopressor (CLV) controller to correct hypotension more efficiently. Here, we conducted a proof-of-concept study to assess the feasibility and performance of CLV control in surgical patients. METHODS Twenty patients scheduled for elective surgical procedures were included in this study. The goal of the CLV system was to maintain MAP within 5 mm Hg of the target MAP by automatically adjusting the rate of a norepinephrine infusion using MAP values recorded continuously from an arterial catheter. The primary outcome was the percentage of time that patients were hypotensive, as defined by a MAP of 5 mm Hg below the chosen target. Secondary outcomes included the total dose of norepinephrine, percentage of time with hypertension (MAP>5 mm Hg of the chosen target), raw percentage "time in target" and Varvel performance criteria. RESULTS The 20 subjects (median age: 64 years [52-71]; male (35%)) underwent elective surgery lasting 154 min [124-233]. CLV control maintained MAP within ±5 mm Hg of the target for 91.6% (85.6-93.3) of the intraoperative period. Subjects were hypotensive for 2.6% of the intraoperative period (range, 0-8.4%). Additional performance criteria for the controller included mean absolute performance error of 2.9 (0.8) and mean predictive error of 0.5 (1.0). No subjects experienced major complications. CONCLUSIONS In this proof of concept study, CLV control minimised perioperative hypotension in subjects undergoing moderate- or high-risk surgery. Further studies to demonstrate efficacy are warranted. TRIAL REGISTRY NUMBER NCT03515161 (ClinicalTrials.gov).
Collapse
Affiliation(s)
- Alexandre Joosten
- Department of Anesthesiology and Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium; Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Sud, Université Paris-Sud, Université Paris-Saclay, Hôpital De Bicêtre, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France.
| | - Brenton Alexander
- Department of Anesthesiology, University of California-San Diego, San Diego, CA, USA
| | - Jacques Duranteau
- Department of Anesthesiology and Intensive Care, Hôpitaux Universitaires Paris-Sud, Université Paris-Sud, Université Paris-Saclay, Hôpital De Bicêtre, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| | - Fabio Silvio Taccone
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jacques Creteur
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Maxime Cannesson
- Department of Anesthesiology & Perioperative Medicine, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, CA, USA
| | - Joseph Rinehart
- Department of Anesthesiology & Perioperative Care, University of California-Irvine, Irvine, CA, USA
| |
Collapse
|
26
|
Closed-loop hemodynamic management. Best Pract Res Clin Anaesthesiol 2019; 33:199-209. [PMID: 31582099 DOI: 10.1016/j.bpa.2019.04.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 04/23/2019] [Indexed: 12/11/2022]
Abstract
As the operating room and intensive care settings become increasingly complex, the required vigilance practitioners must dedicate to a wide array of clinical systems has increased concordantly. The resulting shortage of available attention to these various clinical tasks creates a vacuum for the introduction of systems that can administer well-established goal-directed therapies without significant provider feedback. Recently, there has been an explosion of academic exploration into creating such automated systems, with a strong specific focus on hemodynamic control. Within this field, the largest focus has been on goal-directed fluid therapy as systems automating vasopressor administration have only recently become viable options. Our goal in this review article is to summarize the validity of the relevant goal-directed hemodynamic systems and explore the expanding role of automation within these systems.
Collapse
|
27
|
Reply to: implementation of closed-loop-assisted intra-operative goal-directed fluid therapy during surgery. Eur J Anaesthesiol 2019; 36:304-305. [PMID: 30817362 DOI: 10.1097/eja.0000000000000948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
28
|
Joosten A, Alexander B, Duranteau J. Clinical decision support system clears the way for perioperative goal directed therapy protocol adherence improvement. Minerva Anestesiol 2019; 85:691-692. [PMID: 30735021 DOI: 10.23736/s0375-9393.19.13417-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Alexandre Joosten
- Department of Anesthesiology and Intensive Care, University Hospital of Paris-Sud, University of Paris-Sud, Orsay, France - .,Hospital of Bicêtre, University of Paris-Saclay, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France -
| | - Brenton Alexander
- Department of Anesthesiology and Perioperative Medicine, University of California San Diego, San Diego, CA, USA
| | - Jacques Duranteau
- Department of Anesthesiology and Intensive Care, University Hospital of Paris-Sud, University of Paris-Sud, Orsay, France.,Hospital of Bicêtre, University of Paris-Saclay, Assistance Publique Hôpitaux de Paris (AP-HP), Le Kremlin-Bicêtre, France
| |
Collapse
|