Interaction of increasing ICU survival and admittance policies in patients with hematologic neoplasms: A single center experience with 304 patients

Development and Validation of a Prediction Model for 1-Year Mortality in Patients With a Hematologic Malignancy Admitted to the ICU

OBJECTIVES

To develop and validate a prediction model for 1-year mortality in patients with a hematologic malignancy acutely admitted to the ICU.

DESIGN

A retrospective cohort study.

SETTING

Five university hospitals in the Netherlands between 2002 and 2015.

PATIENTS

A total of 1097 consecutive patients with a hematologic malignancy were acutely admitted to the ICU for at least 24 h.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

We created a 13-variable model from 22 potential predictors. Key predictors included active disease, age, previous hematopoietic stem cell transplantation, mechanical ventilation, lowest platelet count, acute kidney injury, maximum heart rate, and type of malignancy. A bootstrap procedure reduced overfitting and improved the model's generalizability. This involved estimating the optimism in the initial model and shrinking the regression coefficients accordingly in the final model. We assessed performance using internal-external cross-validation by center and compared it with the Acute Physiology and Chronic Health Evaluation II model. Additionally, we evaluated clinical usefulness through decision curve analysis. The overall 1-year mortality rate observed in the study was 62% (95% CI, 59-65). Our 13-variable prediction model demonstrated acceptable calibration and discrimination at internal-external validation across centers (C-statistic 0.70; 95% CI, 0.63-0.77), outperforming the Acute Physiology and Chronic Health Evaluation II model (C-statistic 0.61; 95% CI, 0.57-0.65). Decision curve analysis indicated overall net benefit within a clinically relevant threshold probability range of 60-100% predicted 1-year mortality.

CONCLUSIONS

Our newly developed 13-variable prediction model predicts 1-year mortality in hematologic malignancy patients admitted to the ICU more accurately than the Acute Physiology and Chronic Health Evaluation II model. This model may aid in shared decision-making regarding the continuation of ICU care and end-of-life considerations.

Cyclophosphamide-induced cardiotoxicity at conditioning for allogeneic hematopoietic stem cell transplantation would occur among the patients treated with 120 mg/kg or less

Cyclophosphamide (CY)-induced cardiotoxicity involves rare lethal complications. We previously reported the cardiac events of 811 allogeneic hematopoietic stem cell transplant (allo-HSCT) recipients; 12 out of 811 recipients (1.5%) developed fatal heart failure. The mortality rate was also very high (91.6%, 11/12). CY dose (200 mg/kg or more) was reported as the independent risk factor. The main disease in patients treated with 200 mg/kg or more of CY was severe aplastic anemia (AA). Therefore, we reduced the dose of CY during conditioning for AA (from 200 to 100 mg/kg), and then we analyzed the clinical features of 294 patients who received a total dose of at least 100 mg/kg of CY. We also compared the clinical features between the current study and our previous study. The proportion of patients treated with at least 200 mg/kg of CY was reduced from 4.2% to 0%. However, CY-induced heart failure occurred in four of the 294 patients (1.4%), which was similar to the finding reported in our previous study (1.5%). Two of these four patients received a post-transplant CY (PTCy) regimen (CY 100 mg/kg). All four patients were treated in the cardiac intensive care unit (C-ICU), and two patients survived. In summary, even the CY dose of 120 mg/kg or less would cause cardiotoxicity. We should also carefully monitor patients treated with PTCy, considering the possibility of CY-induced cardiotoxicity. Early diagnosis and ICU management have contributed to improved outcomes.

Perspectives on Advance Care Planning for Patients with Hematologic Malignancy: An International Clinician Questionnaire

Rationale: Critical illness is common in patients with hematologic malignancy (HM). Advance care planning (ACP) can allow these patients to express their care preferences before life-threatening illnesses. Objectives: To evaluate physicians' perspectives surrounding ACP in patients with HM. Methods: We administered a survey to intensivists and hematologic oncologists who care for patients with HM across Canada and the United Kingdom. Potential respondents were identified from institutions that have a hematologic-oncology program. The survey was disseminated electronically. Results: A total of 111 physicians completed the survey, with a response rate of 19% (39% across those who opened the e-mail); 52% of respondents were intensivists, and 48% of respondents were hematologic oncologists. Of the responses, 15.5% of physicians reported that ACP happens routinely at their institution, whereas 8.3% of physicians stated that code status is routinely discussed. ACP discussions were most commonly reported at the onset of critical illness (84.3% of respondents), during disease recurrence (52.9% of respondents), or during the transition to a strictly palliative approach (54.9% of respondents). Commonly cited barriers to ACP centered on physicians' concern about the reaction of the patient or family. Conclusions: This study emphasizes the need for earlier and more frequent ACP discussions in this high-risk population with a variety of barriers identified.

Mental health impact of admission to the intensive care unit for COVID-19

The pandemic caused by Covid-19 has long term ramifications for many, especially those patients who have experienced an intensive care unit (ICU) admission including ventilation and sedation. This paper will explore aspects of care delivery in the ICU regarding the current pandemic and the impact of such on the mental health of some of these patients. Post discharge, patients will be returning to a very different community incorporating social distancing, and in some cases, social isolation and/or shielding. Many may experience a multitude of physical and mental health complications which can ultimately impact upon each other, therefore a bio-psycho-pharmaco-social approach to discharge, case management, risk assessment and positive behavioural support planning is recommended.