Withdrawal Of Ventilation Research Articles

Recent Trends in the Withdrawal of Life-Sustaining Treatment in Patients with Acute Cerebrovascular Disease : 2017-2021.

The Act on Life-Sustaining Treatment (LST) decisions for end-of-life patients has been effective since February 2018. An increasing number of patients and their families want to withhold or withdraw from LST when medical futility is expected. This study aimed to investigate the status of the Act on LST decisions for patients with acute cerebrovascular disease at a single hospital. Between January 2017 and December 2021, 227 patients with acute cerebrovascular diseases, including hemorrhagic stroke (n=184) and ischemic stroke (n=43), died at the hospital. The study period was divided into the periods before and after the Act. The duration of hospitalization decreased after the Act was implemented compared to before (15.9±16.1 vs. 11.2±18.6 days, p=0.127). The rate of obtaining consent for the LST plan tended to increase after the Act (139/183 [76.0%] vs. 27/44 [61.4%], p=0.077). Notably, none of the patients made an LST decision independently. Ventilator withdrawal was more frequently performed after the Act than before (52/183 [28.4%] vs. 0/44 [0%], p<0.001). Conversely, the rate of organ donation decreased after the Act was implemented (5/183 [2.7%] vs. 6/44 [13.6%], p=0.008). Refusal to undergo surgery was more common after the Act was implemented than before (87/149 [58.4%] vs. 15/41 [36.6%], p=0.021) among the 190 patients who required surgery. After the Act on LST decisions was implemented, the rate of LST withdrawal increased in patients with acute cerebrovascular disease. However, the decision to withdraw LST was made by the patient's family rather than the patient themselves. After the execution of the Act, we also observed an increased rate of refusal to undergo surgery and a decreased rate of organ donation. The Act on LST decisions may reduce unnecessary treatments that prolong end-of-life processes without a curative effect. However, the widespread application of this law may also reduce beneficial treatments and contribute to a decline in organ donation.

Withdrawal of mechanical ventilation in amyotrophic lateral sclerosis patients: a multicenter Italian survey

BackgroundLaw 219/2017 was approved in Italy in December 2017, after a years-long debate on the autonomy of healthcare choices. This Law, for the first time in Italian legislation, guarantees the patient’s right to request for withdrawal of life-sustaining treatments, including mechanical ventilation (MV).ObjectiveTo investigate the current status of MV withdrawal in amyotrophic lateral sclerosis (ALS) patients in Italy and to assess the impact of Law 219/2017 on this practice.MethodsWe conducted a Web-based survey, addressed to Italian neurologists with expertise in ALS care, and members of the Motor Neuron Disease Study Group of the Italian Society of Neurology.ResultsOut of 40 ALS Italian centers, 34 (85.0%) responded to the survey. Law 219/2017 was followed by an increasing trend in MV withdrawals, and a significant increase of neurologists involved in this procedure (p 0.004). However, variations across Italian ALS centers were observed, regarding the inconsistent involvement of community health services and palliative care (PC) services, and the intervention and composition of the multidisciplinary team.ConclusionsLaw 219/2017 has had a positive impact on the practice of MV withdrawal in ALS patients in Italy. The recent growing public attention on end-of-life care choices, along with the cultural and social changes in Italy, requires further regulatory frameworks that strengthen tools for self-determination, increased investment of resources in community and PC health services, and practical recommendations and guidelines for health workers involved.

Palliation, end of life care and ventilation withdrawal in neuromuscular disorders.

The role of palliative care in the support of patients with neuromuscular disorders (NMDs) is generally recognised in spite of the scarcity of condition-specific evidence in the literature. We have focussed specifically on palliative and end-of-life care for patients whose neuromuscular disease has an impact on their respiratory function. Reviewing the literature, we have examined where existing palliative care knowledge can be applied to the specific challenges faced by patients with NMDs, identifying where lessons learnt during the management of one condition may need to be judiciously applied to others. We highlight lessons for clinical practice centring on six themes: management of complex symptoms; crisis support; relief of caregiver strain; coordination of care; advance care planning; and end of life care. The principles of palliative care are well suited to addressing the complex needs of patients with NMDs and should be considered early in the course of illness rather than limited to care at the end of life. Embedding relationships with specialist palliative care services as part of the wider neuromuscular multidisciplinary team can facilitate staff education and ensure timely referral when more complex palliative care problems arise.

Terminal Withdrawal of Mechanical Ventilation in a PICU

AbstractData regarding a terminal withdrawal of mechanical ventilation (TWMV) in pediatric patients, in particular the time to death, would be helpful to family and hospital staff. This retrospective case series will review the TWMV in pediatric intensive care unit (PICU) patients at our hospital between 2015 and 2020. There were 222 PICU deaths and 53 of these patients died following a TWMV. The time to death was &lt;1 hour in 37 patients, from 1 to 24 hours in 12 patients, and &gt;24 hours in 4 patients. Neither age nor the duration of mechanical ventilation prior to TWMV was associated with time to death. TWMV was complicated by concurrent withdrawal of cardiac support devices in 9 patients and by a recent cardiac arrest in 3 patients (1 of whom also had a cardiac support device withdrawal), and the time to death for these 11 patients was less than 1 hour (p = 0.01 vs. all others). The time to death for those without concurrent withdrawal of cardiac support devices or recent cardiac arrest was shorter in those with a higher fraction of inspired oxygen but was not associated with positive end expiratory pressure. Time to death following a TWMV was less than a day in more than 90% of our patients and was not associated with patient age or the duration of mechanical ventilation. However, in patients without a recent cardiac arrest or concurrent withdrawal of cardiac support devices, nearly 1 in 10 survived a TWMV for more than a day, while those with a recent cardiac arrest or concurrent withdrawal of cardiac support devices survived for less than an hour.

An Evidence-based Approach to Ventilator Withdrawal at the End of Life (TH104A)

An Evidence-based Approach to Ventilator Withdrawal at the End of Life (TH104A)

Sedation With Dexmedetomidine in Critically Ill Burn Patients Reduced Delirium During Weaning From Mechanical Ventilation.

Weaning of mechanical ventilation while maintaining appropriate pain control and preventing delirium is one of the most challenging aspects of burn care.Dexmedetomidine, an α2-adrenergic receptor agonist used for sedation may improve intensive care unit (ICU) patients' arousal status and enhance patient comfort. To determine the efficacy of dexmedetomidine vs. standardized usual care (midazolam or propofol) in maintaining sedation and reducing delirium in burn patients while weaning off mechanical ventilation. A total of 56 mechanically ventilated patients who fulfilled the criteria for weaning were enrolled in the study. Group 1 (26 patients) received dexmedetomidine 1 mcg/kg over 15 minutes as a loading dose, followed by 0.4-0.1 mcg/kg/h. Group 2 (30 patients) received usual sedation with midazolam 0.08 mg/kg/h or propofol 15- 30 mcg /kg/min). Dexmedetomidine was not associated with a significantly shorter duration of mechanical ventilation (Mean {IQR}: 9.3 {4,12} versus 7.5 {4,10}, p=0.3).Patients who received dexmedetomidine had a lower delirium rate (38,4% on Day 1 to 7,7% on Day 5) in comparison with patients from the usual care group (53,3% on Day 1 to 20% on Day 5) during the five days after the onset of weaning process (p=0.02)and had less need for supplemental use of analgesia (23.1% versus 53.3%, p=0.045) and antipsychotic agents (15.4% versus 53.3%, p=0.01). The most notable adverse effect of dexmedetomidine was bradycardia. Dexmedetomidine may provide effective light sedation and is associated with fewer sedation-related adverse effects in burn patients. Sedation with dexmedetomidine during the weaning process in adult burn patients was associated with lower delirium rates, a trend towards the earlier withdrawal of mechanical ventilation but did not seem to improve the total duration of mechanical ventilation.

Efficacy and Safety of Convalescence Plasma Therapy in COVID-19 Patients: A Systematic Review and Meta-Analysis.

Background The coronavirus disease 2019 (COVID-19) has outbroken into a global pandemic. The death rate for hospital patients varied between 11% and 15%. Although COVID-19 is extremely contagious and has a high fatality rate, the amount of knowledge available in the published literature and public sources is rapidly growing. The efficacy of convalescent plasma (CP) therapy for COVID-19 is controversial. Objective This meta-analysis was designed to assess the efficacy of CP therapy for COVID-19 through a literature survey. Methods Until August 30, 2021, a literature search was undertaken in Pubmed, Embase, Web of Science, Cochrane Central Register of Controlling Trials (Central), and China National Knowledge Infrastructure databases. The Risk Ratio (RR) and 95% confidence intervals (CIs) were pooled using a fixed or random effect model in dichotomous data. Mean difference (MD) and 95% confidence intervals (CIs) were pooled using a fixed or random effect model in continuous data. Studies with missing or unsuitable data were presented descriptively in the outcomes. Results In total, thirteen randomized controlled trials (RCTs) were selected for the present meta-analysis, which included a total of 13232 participants. Our results revealed that the CP group has lower mortality compared to the control group, and there was a statistically significant difference (RR: 0.70, 95% CI: 0.55, 0.89, Z = 2.92, P = 0.004 < 0.01); other secondary outcomes such as the shortness of breath symptom improved significantly in CP group (RR:1.48, 95% CI: 1.13, 1.93, Z = 2.85, P = 0.004 < 0.01), as well as Interleukin-6 (IL-6) (MD: −4.46, 95% CI: −8.28, −0.63, Z = 2.28, P = 0.02 < 0.05) and Ferritin (MD: −447.68, 95% CI: −501.75, −393.6, Z = 16.23, P < 0.00001) are reduced significantly in CP group. However, there was no statistically significant change in the ventilator withdrawal rate, imaging results improvement, or days to hospital discharge. There was also no substantial difference in viral nucleic acid negative conversion rate and neutralizing antibody-positive conversion rate, as well as the incidence of adverse reactions. Conclusions The safety and potential efficacy of convalescent plasma therapy offer a promising treatment strategy for COVID-19. CP therapy can reduce mortality and improve breath and inflammatory cytokines IL-6 and Ferritin in COVID-19 with no significant increase in adverse reactions. However, it does not affect improving virology indicators. In summary, more high-quality clinical trials are needed to verify the conclusion of the present study.

Initiation and Withdrawal of Invasive Ventilation for Patients with Amyotrophic Lateral Sclerosis: A Narrative Literature Review

Decisions regarding invasive ventilation with tracheostomy (TIV) in patients with amyotrophic lateral sclerosis (ALS) involve serious ethical issues. Cultural differences in the attitudes of patients, caregivers, and physicians toward TIV initiation and withdrawal decisions have been analyzed based on a narrative review approach, comparing the situation between Japan and the U.S. Three main issues were identified regarding the implementation of TIV. The first is the lack of Advance Care Planning. Second, some patients may choose TIV based on the wishes of their physicians or caregivers, even if the patients themselves do not want TIV in the Japanese context. Third is the influence of patient associations, which advocate for the protection of patients’ rights. Next, this study identifies the following issues related to TIV discontinuation. The main concern here is cultural differences in legislation and ethical intuitions regarding the discontinuation of TIV. The treatment guidelines for patients with ALS advise physicians to reassure patients that TIV can be withdrawn at any point. However, TIV withdrawal is not explicitly discussed in Japan. Moreover, Japanese ALS treatment guidelines state that ventilation withdrawal is currently impossible, due to a lack of legal support. Most Japanese physicians have told patients that they are not allowed to stop ventilation via such a request. Unlike in the U.S., withholding and withdrawing ventilators are not ethically equivalent in Japan. In conclusion, the decision-making process regarding TIV is difficult, not only for the patients and caregivers, but also for physicians. Even if patients are legally entitled to refuse unwanted treatment, there have been cases in which Japanese physicians have felt an ethical dilemma in stopping TIV for patients with ALS. However, few studies have investigated in detail why physicians oppose the patient’s right to discontinue TIV in Japan.

The Use of Mechanical Ventilation Support at the End of Life in Motor Neurone Disease/Amyotrophic Lateral Sclerosis: A Scoping Review.

There has been an increase in the use of mechanical ventilation (MV) in motor neurone disease (MND) to alleviate symptoms related to hypoventilation. Little is known about its use at the end of life, and the withdrawal of MV is a challenging topic. A scoping review was conducted to map the existing evidence of ventilation use at the end of life in MND. The Joanna Briggs Institute methodological framework was used, and a total of 31 documents were included in the data extraction. Boarder themes around place, planning, cause and comments on death were identified. Our findings show that the focus of the literature has been on the process of the withdrawal of ventilation, creating the subthemes of timing and reason for withdrawal, along with ethical, emotional, and practical issues, medications used and the time until death. There is a foundation of evidence to guide the process and discuss the ethical and emotional issues of withdrawing ventilation. However, there remains limited evidence from patient and family member perspectives. Importantly, there is almost no evidence exploring dying with ventilation in place, the active or passive decisions around this process, how the interface might impact the dying process, or what families think about this.

Survey of critical care practices for alcohol withdrawal syndrome in the intensive care unit

AbstractIntroductionAlcohol use disorder affects up to 60% of intensive care unit (ICU) patients. Alcohol withdrawal syndrome (AWS) is associated with increased length of stay, mechanical ventilation, and mortality. The lack of clinical practice guidelines specific to ICU patients leads to ambiguity about the standard management of AWS in this population.ObjectivesThe aim of this study was to describe current practice patterns employed for AWS management in ICU settings across the United States.MethodsThis was a cross‐sectional survey of practicing critical care pharmacists identified via a pharmacy professional organization critical care listserv. Emails were sent four times to the recipient list from May 14, 2021 to June 25, 2021. Retired pharmacists and trainees on the listserv were excluded. The survey was conducted by REDCap and descriptive statistics were performed.ResultsThere were a total of 144/1534 (9.4%) responses. Predominant characteristics included university hospital settings (n = 71/143, 49.7%) with greater than 75 ICU beds (n = 54/144, 37.5%), and medical (n = 53/144, 36.8%) or mixed (n = 52/144, 36.1%) ICU populations. The majority reported having an institutional AWS guideline (n = 96/140, 68.6%). A total of 139/143 (97.2%) preferred benzodiazepines, with lorazepam (n = 136/143, 97.8%) as the primary benzodiazepine agent. Most preferred lorazepam as needed, rather than preemptively (n = 137/138, 99.3%). Phenobarbital use was reported by 82.6% (n = 119/144) of respondents, primarily for treatment of benzodiazepine‐refractory withdrawal (n = 96/117, 82.1%). Similarly, dexmedetomidine use was reported by 86.1% (n = 124/144) of respondents, primarily for refractory withdrawal (n = 48/121, 39.7%). Propofol was primarily preferred for patients on mechanical ventilation (n = 56/98, 57.1%) or refractory withdrawal (n = 51/98, 52.0%). Clonidine was preferred by 45.8% (n = 66/144) and atypical antipsychotics by 33.6% (n = 48/143) of respondents.ConclusionsMost ICU pharmacists prefer symptom‐triggered benzodiazepines first line, followed by propofol in intubated patients and dexmedetomidine and/or phenobarbital for refractory cases. Clinical practice guidelines may help provide guidance for the management of these patients.

Communication surrounding initiation and withdrawal of non-invasive ventilation in adults with motor neurone disease.

Motor neurone disease causes respiratory weakness that can lead to death. While non-invasive ventilation relieves symptoms, there are complex issues to consider prior to commencement. To identify what is known and understood about the clinician communication of non-invasive ventilation by people with motor neurone disease. The Joanna Briggs Institute approach to systematic reviews was followed for literature retrieval and selection. Research literature published between 1990-2019 in English from the Medline, CINAHL, ProQuest Research Library and the Cochrane Library of Systematic Reviews databases were used. A total of two themes emerged: communication challenges doctors face when discussing non-invasive ventilation withdrawal, and the importance of well-timed, effective communication by clinicians-specifically the influence clinicians have on family decision-making. Guidance on communications around palliative care, non-invasive ventilation introduction and withdrawal exist, however implementation is often not straightforward. Research into the communication surrounding non-invasive ventilation from those living with motor neuron disease, their families and clinicians is required to inform guideline implementation and practice.

Effectiveness of an Algorithmic Approach to Ventilator Withdrawal at the End of Life (SAPLEN 101)

Effectiveness of an Algorithmic Approach to Ventilator Withdrawal at the End of Life (SAPLEN 101)

Peri-Operative Desensitization for Highly Sensitized Lung Transplant Recipients Following COVID-19 Acute Respiratory Distress Syndrome (ARDS) - Report of Two Cases

IntroductionSensitized lung transplant (LTx) candidates have longer waiting times, decreased likelihood of transplant, and increased risk of death while on the waitlist. Patients with SARS-Cov-2 ARDS on ECMO support due to end-stage lung disease have a short window of opportunity for LTx. We report two cases in which the Toronto LTx peri-operative strategy was performed with good outcomes in highly sensitized Covid-19 patients.Case ReportCase 1: 31-yo female patient with Covid-19 ARDS, transferred for LTx evaluation after 46 days on VV-ECMO. She was pregnant when she presented with Covid -19 acute respiratory failure, and underwent an urgent C-section due to fetal distress. She required blood transfusions during ICU stay. At LTx assessment: PRA class I: 95%; class II: 0%. A decision to proceed with LTx with perioperative desensitization was made considering the low probability of finding a suitable donor. After seven days on the waiting list, she underwent bilateral LTx. Virtual crossmatch (XM) positive (B35); CDC-XM negative. Desensitization protocol was performed with perioperative plasma exchange (PLEX) without basiliximab induction, followed by five sessions of PLEX and intravenous immunoglobulin 1 mg/kg. Due to postoperative acute cholecystitis with positive cultures after biliary drainage, anti thymocyte globulin (ATG) infusion (3 mg/kg) was held, and infusion postponed until four weeks post LTx. Tacrolimus, mycophenolate, and prednisone were used as maintenance immunosuppression. The patient was discharged home on PO day 53 with excellent graft function. Case 2: 35-yo female patient with Covid-19 ARDS, transferred for LTx after 69 days on VV-ECMO. History of 3 previous pregnancies and multiple blood transfusions due to transitory coagulopathy during her ICU stay. PRA class I: 83%; class II: 94%. VCM positive (B7, Cw7, DRB1*11:01, DR52, DQA1*05/DQB1*03). Desensitization protocol was performed, but ATG infusion was held due to C. albicans bloodstream infection and colonization with pan-resistant K. pneumoniae. DSAs at six weeks were negative. She remains hospitalized for mechanical ventilation withdrawal and inpatient rehabilitation.SummaryIn selected cases, peri-operative desensitization is feasible and can be safely implemented in highly sensitized patients with Covid-19 ARDS.

End-of-Life Decisions of Intracranial Hemorrhage Patients Successfully Weaned From Prolonged Mechanical Ventilation.

Factors related to the end-of-life decisions of patients with intracranial hemorrhage who were successfully weaned from prolonged mechanical ventilation remain unclear. This study aimed to evaluate factors that influence the end-of-life decisions of these patients. Methods: This retrospective study examined patients with intracranial hemorrhage successfully weaned from prolonged mechanical ventilation between January 2012 and December 2017. The following data was collected and analyzed: age, gender, comorbidities, Glasgow Coma Scale scores, receipt or non-receipt of intracranial hemorrhage surgery, discharge status, and end-of-life decisions.Results: In total, 91 patients with intracranial hemorrhage were successfully weaned from prolonged mechanical ventilation. The families of 62 (68.1%) patients signed the do-not-resuscitate order. A Glasgow Coma Scale score of ≥10 at discharge from the respiratory care center and zero comorbidities were the influencing factors between patients whose do-not-resuscitate orders were signed and those whose orders were not signed. Patients with intracranial hemorrhage successfully weaned from prolonged mechanical ventilation had chronic kidney disease comorbidity and Glasgow Coma Scale score of <7 on admission to respiratory care center with a general ward mortality rate of 83.3%.Conclusions: The families of intracranial hemorrhage patients with multiple comorbidities and higher neurologic impairment after successful weaning from the ventilator believed that palliative therapy would provide a greater benefit. Patients with intracranial hemorrhage successfully weaned from prolonged mechanical ventilation with chronic kidney disease comorbidity and Glasgow Coma Scale score of <7 on admission to respiratory care center are candidates for the consideration of hospice care with ventilator withdrawal.

The Role of the Respiratory Therapy Team in the Treatment of Patients With Acquired Immunodeficiency Syndrome Complicated With Pneumocystis Pneumonia Undergoing Mechanical Ventilation.

ObjectiveTo explore the role of the respiratory therapy team in the treatment of patients with acquired immunodeficiency syndrome (AIDS) complicated with pneumocystis pneumonia (PCP) undergoing mechanical ventilation.MethodsA retrospective cross-sectional study was conducted, including 60 patients with AIDS complicated with PCP undergoing mechanical ventilation in our hospital from June 2019 to July 2020. In the process of patient respiratory monitoring, hospital transport, ventilator withdrawal, airway management, various aerosol treatments and controlled oxygen therapy, patients were divided into the control group and the case group according to whether the respiratory therapy team was involved or not (30 in the control group, 25 males and five females; 30 in the case group, 24 males and six females). The baseline data, mechanical ventilation time, hospitalization time and hospitalization expenses of the two groups were compared.ResultsThere was no statistically significant difference in baseline data between the case and control groups (P > 0.05). Compared with the control group, the case group had significantly shorter mechanical ventilation times and average hospitalization lengths and the average expenses decreased, and the difference was statistically significant (P < 0.05).ConclusionThe participation of the respiratory therapy team in the mechanical ventilation treatment of patients with AIDS and PCP helps to shorten the mechanical ventilation time and the average length of hospitalization and reduce the hospitalization expenses of patients. It is expected to increase the cure rate of such patients and improve their prognosis.

Modeling Outcomes Using Sequential Organ Failure Assessment (SOFA) Score-Based Ventilator Triage Guidelines During the COVID-19 Pandemic.

To model performance of the Sequential Organ Failure Assessment (SOFA) score-based ventilator allocation guidelines during the COVID-19 pandemic. A retrospective cohort study design was used. Study sites included 3 New York City hospitals in a single academic medical center. We included a random sample (205) of adult patients who were intubated (1002) from March 25, 2020, till April 29, 2020. Protocol criteria adapted from the New York State's 2015 guidelines were applied to determine which patients would have had mechanical ventilation withheld or withdrawn. 117 (57%) patients would have been identified for ventilator withdrawal or withholding based on the triage guidelines. Of those 117 patients, 28 (24%) survived hospitalization. Overall, 65 (32%) patients survived to discharge. Triage protocols aim to maximize survival by redirecting ventilators to those most likely to survive. Over 50% of this sample would have been identified as candidates for ventilator exclusion. Clinical judgment would therefore still be needed in ventilator reallocation, thus re-introducing bias and moral distress. This data suggests limited utility for SOFA score-based ventilator rationing. It raises the question of whether there is sufficient ethical justification to impose a life-ending decision based on a SOFA scoring method on some patients in order to offer potential benefit to a modest number of others.

Nurses' involvement in end-of-life decisions in neonatal intensive care units.

End-of-life decision-making for terminally ill neonates raises important legal and ethical issues. In Greece, no recent data on nurses' attitudes and involvement in end-of-life decisions are available. To investigate neonatal nurses' attitudes and involvement in end-of-life decisions and the relation to their socio-demographic and work-related background data. A survey was carried out in 28 neonatal intensive care units between September 2018 and January 2019. A structured questionnaire was distributed by post. The questionnaire was answered anonymously by 312 nurses (response rate, 71.1%) and returned to the investigators. The study was approved by the Bioethics and Research Committee of Aretaieio Hospital in accordance with the Helsinki Declaration. Nurses more often reported involvement in various end-of-life decisions, such as continuation of treatment without adding further therapeutic interventions for terminally ill neonates, while less reported were mechanical ventilation withdrawal and drug administration to end life. Nurses with a high attitude score, reflecting a more quality-of-life approach, were more likely to be involved in setting limits to intensive care. α low score was consistent with life preservation. Nurses' religiousness (p = 0.097), parenthood (p = 0.093), involvement in daily practice (p = 0.03), and position on the existing legal framework (p < 0.002) influenced their attitude score. The likelihood of nurses to support interventions in neonates with poor prognosis in neonatal intensive care units was related to their attitudes. After adjusting for potential confounders, the most important predictors for nurses' attitudes were parenthood, involvement in daily practice, and position supporting current legislation reform. Variability in involvement in end-of-life decisions among nurses exists on a national level.

ICU Clinicians’ Experiences of Terminal Weaning and Extubation

ContextAside from spontaneous death, a majority of ICU deaths occur after a decision to either withhold or withdraw life-sustaining measures, including withdrawal of ventilatory support. While terminal weaning or terminal extubation are both used, the lack of evidence on the superiority of one method over the other can create challenges for ICU clinicians. There is a need to explore clinicians’ experiences related to terminal weaning/extubation to understand their decision-making processes as well as the context and mechanisms that guide this process. ObjectivesThis study aimed to explore ICU clinicians'experiences of Terminal Weaning of Mechanical Ventilation (TWMV) in order to better understand the process, and clinicians’ feelings about the process. MethodsThis study used an exploratory descriptive qualitative design. Data were collected via semi-structured, face-to-face interviews with 20 ICU clinicians. An inductive, data driven thematic analysis approach was used for data analysis. ResultsAnalysis of the data resulted in four themes: Fine-tuning the Process of TWMV; Focusing on the Family; Ensuring Patient-Centered Care; and Impact on Health care Clinicians and Support Needs. ConclusionThe identified themes provide insight into the complexity of the withdrawal of mechanical ventilation within the context of end-of-life care in the ICU. The themes highlight the need for clear communication of a TWMV plan between clinicians to avoid conflict during the process, ensuring medication is in place for potential distressing symptoms, incorporating patient and family wishes in planning, supporting the family during the process, and training and support for clinicians.

Polysomnography in pre-operative screening for obstructive sleep apnea in patients undergoing bariatric surgery: a retrospective cohort study.

To assess the impact of obstructive sleep apnea (OSA) screening with polysomnography on preventing cardiovascular and pulmonary complications in the postoperative period of bariatric surgery. This was a single-center retrospective cohort study, including 522 adults who underwent bariatric surgery between August 2010 and May 2019. Electronic medical records were accessed to obtain variables of interest. Screening for OSA was performed as a medical indication and registered as positive if apnea-hypopnea index was ≥5 events/hour in patients who did not have previous OSA diagnosis. The primary outcome was the presence of cardiac or pulmonary events in the 30-day postoperative period. Secondary outcomes included length of stay (days), need for an intensive care unit (ICU) after surgery, length of mechanical ventilation, and time from mechanical ventilation withdrawal. Statistical analyses were performed with χ2, Fisher's exact test, Student's t-test, Mann-Whitney U test, and Poisson regression. Most participants (n = 326) did not have OSA screening with polysomnography, while 196 had performed this screening. There was no difference in cardiopulmonary events between the screening and non-screening groups (4.2% vs. 2.8%; P = 0.45). Polysomnography screening could not reduce cardiovascular or pulmonary complications in the postoperative period, RR = 1.73 (95% CI: 0.68-4.14). There was no difference in ICU admission, length of stay, and time from mechanical ventilation between groups in secondary outcomes. Our study suggests that OSA screening with polysomnography in the pre-operative care of bariatric surgery is a dispensable procedure, as it does not change postoperative cardiopulmonary outcomes. Indications for polysomnography should be made at the individual level.

Electrical Impedance Tomography Predicts Weaning Success in Adult Patients With Delayed Upper Abdominal Surgery: A Single-Center Retrospective Study.

Objective: To evaluate the predictive value of electrical impedance tomography (EIT) in patients with delayed ventilator withdrawal after upper abdominal surgery.Methods: We retrospectively analyzed data of patients who were ventilated >24 h after upper abdominal surgery between January 2018 and August 2019. The patients were divided into successful (group S) and failed (group F) weaning groups. EIT recordings were obtained at 0, 5, 15, and 30 min of spontaneous breathing trials (SBTs) with SBT at 0 min set as baseline. We assessed the change in delta end-expiratory lung impedance and tidal volume ratio (ΔEELI/VT) from baseline, the change in compliance change percentage variation (|Δ(CW-CL)|) from baseline, the standard deviation of regional ventilation delay index (RVDSD), and global inhomogeneity (GI) using generalized estimation equation analyses. Receiver operating characteristic curve analyses were performed to evaluate the predictive value of parameters indicating weaning success.Results: Among the 32 included patients, ventilation weaning was successful in 23 patients but failed in nine. Generalized estimation equation analysis showed that compared with group F, the ΔEELI/VT was lower, and the GI, RVDSD, and (|Δ(CW-CL)|) were higher in group S. For predicting withdrawal failure, the areas under the curve of the ΔEELI/VT, (|Δ(CW-CL)|), and the RVDSD were 0.819, 0.918, and 0.918, and 0.816, 0.884, and 0.918 at 15 and 30 min during the SBTs, respectively.Conclusion: The electrical impedance tomography may predict the success rate of ventilator weaning in patients with delayed ventilator withdrawal after upper abdominal surgery.