Significant improvements have been achieved in cardiac arrest resuscitation and postarrest resuscitation care, but mortality remains high. Most of the poor outcomes and deaths of cardiac arrest ...survivors have been attributed to widespread brain injury. This brain injury, commonly manifested as a comatose state, is a marker of poor outcome and a major basis for unfavorable neurological prognostication. Accurate prognostication is important to avoid pursuing futile treatments when poor outcome is inevitable but also to avoid an inappropriate withdrawal of life-sustaining treatment in patients who may otherwise have a chance of achieving meaningful neurological recovery. Inaccurate neurological prognostication leading to withdrawal of life-sustaining treatment and deaths may significantly bias clinical studies, leading to failure in detecting the true study outcomes. The American Heart Association Emergency Cardiovascular Care Science Subcommittee organized a writing group composed of adult and pediatric experts from neurology, cardiology, emergency medicine, intensive care medicine, and nursing to review existing neurological prognostication studies, the practice of neurological prognostication, and withdrawal of life-sustaining treatment. The writing group determined that the overall quality of existing neurological prognostication studies is low. As a consequence, the degree of confidence in the predictors and the subsequent outcomes is also low. Therefore, the writing group suggests that neurological prognostication parameters need to be approached as index tests based on relevant neurological functions that are directly related to the functional outcome and contribute to the quality of life of cardiac arrest survivors. Suggestions to improve the quality of adult and pediatric neurological prognostication studies are provided.
The use of temporary mechanical circulatory support in cardiogenic shock has increased dramatically despite a lack of randomized controlled trials or evidence guiding clinical decision-making. ...Recommendations from professional societies on temporary mechanical circulatory support escalation and de-escalation are limited. This scientific statement provides pragmatic suggestions on temporary mechanical circulatory support device selection, escalation, and weaning strategies in patients with common cardiogenic shock causes such as acute decompensated heart failure and acute myocardial infarction. The goal of this scientific statement is to serve as a resource for clinicians making temporary mechanical circulatory support management decisions and to propose standardized approaches for their use until more robust randomized clinical data are available.
Background Severe coronavirus disease 2019 (COVID-19) is characterized by a proinflammatory state with high mortality. Statins have anti-inflammatory effects and may attenuate the severity of ...COVID-19. Methods and Results An observational study of all consecutive adult patients with COVID-19 admitted to a single center located in Bronx, New York, was conducted from March 1, 2020, to May 2, 2020. Patients were grouped as those who did and those who did not receive a statin, and in-hospital mortality was compared by competing events regression. In addition, propensity score matching and inverse probability treatment weighting were used in survival models to examine the association between statin use and death during hospitalization. A total of 4252 patients were admitted with COVID-19. Diabetes mellitus modified the association between statin use and in-hospital mortality. Patients with diabetes mellitus on a statin (n=983) were older (69±11 versus 67±14 years;
<0.01), had lower inflammatory markers (C-reactive protein, 10.2; interquartile range, 4.5-18.4 versus 12.9; interquartile range, 5.9-21.4 mg/dL;
<0.01) and reduced cumulative in-hospital mortality (24% versus 39%;
<0.01) than those not on a statin (n=1283). No difference in hospital mortality was noted in patients without diabetes mellitus on or off statin (20% versus 21%;
=0.82). Propensity score matching (hazard ratio, 0.88; 95% CI, 0.83-0.94;
<0.01) and inverse probability treatment weighting (HR, 0.88; 95% CI, 0.84-0.92;
<0.01) showed a 12% lower risk of death during hospitalization for statin users than for nonusers. Conclusions Statin use was associated with reduced in-hospital mortality from COVID-19 in patients with diabetes mellitus. These findings, if validated, may further reemphasize administration of statins to patients with diabetes mellitus during the COVID-19 era.
There is a paucity of data on heart transplantation (HT) using COVID-19 donors.
This study investigated COVID-19 donor use, donor and recipient characteristics, and early post-HT outcomes.
Between ...May 2020 and June 2022, study investigators identified 27,862 donors in the United Network for Organ Sharing, with 60,699 COVID-19 nucleic acid amplification testing (NAT) performed before procurement and with available organ disposition. Donors were considered “COVID-19 donors” if they were NAT positive at any time during terminal hospitalization. These donors were subclassified as “active COVID-19” (aCOV) donors if they were NAT positive within 2 days of organ procurement, or “recently resolved COVID-19” (rrCOV) donors if they were NAT positive initially but became NAT negative before procurement. Donors with NAT-positive status >2 days before procurement were considered aCOV unless there was evidence of a subsequent NAT-negative result ≥48 hours after the last NAT-positive result. HT outcomes were compared.
During the study period, 1,445 “COVID-19 donors” (COVID-19 NAT positive) were identified; 1,017 of these were aCOV, and 428 were rrCOV. Overall, 309 HTs used COVID-19 donors, and 239 adult HTs from COVID-19 donors (150 aCOV, 89 rrCOV) met study criteria. Compared with non-COV, COVID-19 donors used for adult HT were younger and mostly male (∼80%). Compared with HTs from non-COV donors, recipients of HTs from aCOV donors had increased mortality at 6 months (Cox HR: 1.74; 95% CI: 1.02-2.96; P = 0.043) and 1 year (Cox HR: 1.98; 95% CI: 1.22-3.22; P = 0.006). Recipients of HTs from rrCOV and non-COV donors had similar 6-month and 1-year mortality. Results were similar in propensity-matched cohorts.
In this early analysis, although HTs from aCOV donors had increased mortality at 6 months and 1 year, HTs from rrCOV donors had survival similar to that seen in recipients of HTs from non-COV donors. Continued evaluation and a more nuanced approach to this donor pool are needed.
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Hepatitis C virus (HCV) donors should be categorized as HCV-viremic (antibody Ab negative or positive/Nucleic Acid testing NAT positive) or HCV Ab
nonviremic (Ab
/NAT
). Whereas recipients of hearts ...from HCV-viremic donors will develop viremia but can be cured of HCV shortly after transplant with direct-acting antivirals (DAAs), recipients of hearts from HCV Ab
nonviremic donors are highly unlikely to become viremic or require DAAs. Given this important difference in risk, we assessed the utilization trends and post-heart-transplantation outcomes of HCV-naive (Ab
/NAT
), HCV-viremic, and HCV Ab
nonviremic donor hearts.
A total of 26,572 adult donors (≥18 years) with information on HCV Ab and NAT status were identified in the United Network for Organ Sharing registry between August 2015 and June 2018 for utilization rates. Adult heart transplant recipients of these donors were compared for primary graft failure (PGF) at 90 days and 1-year recipient survival.
A total of 96 HCV Ab
nonviremic and 135 HCV-viremic adult donor hearts were transplanted during the study period. The utilization rates of both HCV Ab
nonviremic (1.4%-23.4%) and HCV-viremic (0.7%-25.4%) donor hearts increased significantly approaching HCV-naive rates (29.04%). There was no significant difference in rates of PGF and 1-year survival between recipients in the 3 donor HCV groups. We also used (1:3) propensity score matching and found similar 1-year survival in different donor HCV groups (HCV-naive vs HCV Ab
nonviremic, p = 0.59, and HCV-naive vs HCV-viremic, p = 0.98).
Recipients of HCV-viremic and HCV Ab
nonviremic donor hearts had equivalent risk of PGF and 1-year mortality compared with recipients of HCV-naive donor hearts. Although only HCV-viremic organs require DAAs and the risk of coronary artery vasculopathy after treated HCV infection has not been defined, the utilization rates of both HCV Ab
nonviremic and HCV-viremic adult donor hearts have increased at an equal pace now approaching HCV-naive rates.
Hemolysis, even at low levels, activates platelets to create a prothrombotic state and is common during mechanical circulatory support. We examined the association of low-level hemolysis (LLH) and ...nonhemorrhagic stroke during venoarterial extracorporeal membrane oxygenation (VA ECMO) support.
A single-center retrospective review of all adult patients placed on VA ECMO from January 2012 to September 2017 was conducted. To determine the association between LLH and nonhemorrhagic stroke, patients were categorized as those with and without LLH. LLH was defined by 48-hour plasma free hemoglobin (PFHb) of 11 to 50 mg/dL after VA ECMO implantation.
Of 201 patients who underwent VA ECMO placement, 150 (75%) met inclusion criteria and comprised the study population. They were 55 ± 14 years of age and 50 (33%) were women. Sixty-two (41%) patients had LLH. Patients with LLH had a higher likelihood of incident nonhemorrhagic stroke during VA ECMO support (20 32% versus 4 5%; adjusted hazard ratio HR, 7.6; 95% confidence interval CI, 2.2 to 25.9; p = 0.001). The severity of LLH was associated with an incrementally higher likelihood of a nonhemorrhagic stroke (PFHb 26 to 50 mg/dL: HR, 11.3; 95% CI, 3.6 to 35.1; p = 0.001; PFHb 11 to 25 mg/dL: HR, 4.4; 95% CI, 1.36 to 14.85; p = 0.014) in comparison with no LLH. Those with LLH had a 2-fold greater increase in mean platelet volume after VA ECMO placement (0.98 ± 1.1 fL versus 0.49 ± 0.96 fL; p = 0.03). Patients with a nonhemorrhagic stroke had a higher operative mortality (20 83% versus 57 45%; adjusted HR, 3.1; 95% CI, 1.8 to 5.3; p < 0.001).
Hemolysis at low levels during VA ECMO support is associated with subsequent nonhemorrhagic stroke.
Left ventricular systolic dysfunction (LVSD) accounts for almost 25% of nonacceptance of potential donor hearts. Previous smaller, single-center studies showed that LVSD following brain death may be ...transient, and such hearts can be successfully resuscitated with resolution of LVSD, then transplanted.
This study evaluated outcomes of donor hearts with LVSD on initial transthoracic echocardiogram (TTE) that resolved during donor management.
We reviewed echocardiograms of all cardiac donors in the United Network of Organ Sharing database that were transplanted from January 1, 2007, to September 30, 2015, and identified 472 donor hearts with LVSD (left ventricular ejection fraction LVEF ≤40%) on initial TTE that resolved (LVEF ≥50%) during donor management on a subsequent TTE. These patients comprised the improved donor LVEF group. These were compared with donor hearts with normal LVEF (LVEF ≥55%) on the initial TTE for recipient mortality, cardiac allograft vasculopathy (CAV), and primary graft failure (PGF).
There was no significant difference in recipient mortality at 30 days, 1 year, 3 years, and 5 years of follow-up, nor any difference in rates of PGF at 90 days and CAV at 5 years between recipients of donor hearts with improved LVEF and recipients of donor hearts with initially normal LVEF. Post-transplant length of stay was also similar between the 2 groups. Using propensity scores, 461 transplants in the improved-donor LVEF group were matched to 461 transplants in the normal-donor LVEF group. There was no significant difference in PGF at 90 days or recipient mortality after up to 5 years of follow-up.
In the largest analysis of donor hearts with transient LVSD, we found that such hearts can be successfully resuscitated and transplanted without increasing recipient mortality, CAV, or PGF. These results underscore the importance of appropriate donor management and should help to increase utilization of donor hearts with transient LVSD.
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