Plasma Exchange: An Effective Rescue Therapy in Critically Ill Patients With Coronavirus Disease 2019 Infection.

OBJECTIVES: Infection by severe acute respiratory syndrome coronavirus-2 can induce uncontrolled systemic inflammation and multiple organ failure. The aim of this study was to evaluate if plasma exchange, through the removal of circulating mediators, can be used as rescue therapy in these patients. DESIGN: Single center case series. SETTING: Local study. SUBJECTS: Four critically ill adults with coronavirus disease 19 pneumonia that failed conventional interventions. INTERVENTIONS: Plasma exchange. Two to six sessions (1.2 plasma volumes). Human albumin (5%) was used as the main replacement fluid. Fresh frozen plasma and immunoglobulins were administered after each session to avoid coagulopathy and hypogammaglobulinemia. MEASUREMENTS AND MAIN RESULTS: Serum markers of inflammation and macrophage activation. All patients showed a dramatic reduction in inflammatory markers, including the main cytokines, and improved severity scores after plasma exchange. All survived to ICU admission. CONCLUSIONS: Plasma exchange mitigates cytokine storm, reverses organ failure, and could improve survival in critically ill patients with coronavirus disease 2019 infection.

Peripheral venous access devices for apheresis: 16-gauge is not always needed.

BACKGROUND: Peripheral venous access (PVA) devices for apheresis should be selected to provide enough flow with the least vein damage, but little information is available about PVA devices blood flow rates. The aim of this study was to know the blood flow rates provided by the most frequent PVA devices used in apheresis procedures. STUDY DESIGN AND METHODS: An experimental study was designed to simulate a plasma exchange procedure using citrated whole blood (WB). Two steel needles (16- and 17-gauge [G]) and six plastic cannulas (16G, 17G, two 18G, 20G, and 22G) were analyzed. The hematocrit of the WB was adjusted to 45%, 40%, 35%, 30%, and 25%. The separated plasma from the WB was used as replacement fluid. RESULTS: Blood flow rate (inlet/return, mL/min) for 16G and 17G devices with a hematocrit of 45% was 142/142 (maximum admitted by separator); one of the 18G cannulas reached 142/142 and the other one reached 117/140; the 20G cannula reached 78/94; and the 22G reached 45/55. A hematocrit reduction from 45% to 25% increased the flow rate (when possible) over 22% (range: 14%-30%). CONCLUSIONS: PVA devices with a size of 16-18G provided the maximum flow admitted by the apheresis system. The 20G provided flow rates for a significant number of procedures, and 22G could be used in some procedures. The hematocrit should be taken into account when selecting the PVA device since, at hematocrit of 25%, the flow can be from 14% to 30% higher than flow rates reached with blood at hematocrit of 45%.

Caregiver emotional distress: external open-behaviour signs.

OBJECTIVES: To determine whether specific external signs of emotional distress (ESED) can be an indirect measure of emotional distress in caregivers. METHODS: A cross-sectional multicentre design was used. 148 primary caregivers of advanced cancer patients attended in four Spanish palliative care units participated in this study. The emotional distress of caregivers was measured using both the Emotional Distress of Caregivers Scale and a psychological interview. Health professionals collected data using a standard clinical interview process after a brief training period. RESULTS: More than half the caregivers (60%) presented with emotional distress. A positive correlation (r=0.566) was found between the intensity of ESED and emotional distress per se. Caregivers who presented emotional distress showed more ESED than those that did not (p<0.01). The study found significant differences for the categories 'visible signs of sadness, fear, crying, feeling overwhelmed' (p<0.001), 'difficulty in separating from the patient: family refuses to let the patient make decisions and insists on care' (p<0.001) and 'visible signs of anger, irritability or frequent disagreement with therapeutic measures' (p<0.001). No significant differences were found with respect to gender. The set of items to measure these external signs presented an adequate reliability assessed using Cronbach's alpha (α=0.773). CONCLUSIONS: The assessment of ESED in caregivers could serve as a useful method to assess their emotional distress. Incorporating the systematic assessment of these external signs as part of the assessment of the emotional distress of primary caregivers could improve the overall assessment and treatment provided to these caregivers.

[Assessment of the psychometric properties of the Detection of Emotional Distress Scale in cancer patients]. / Evaluación de las propiedades psicométricas del cuestionario de Detección de Malestar Emocional (DME) en pacientes oncológicos.

OBJECTIVE: To evaluate and alleviate the emotional distress suffered by advanced cancer patients, simple screening methods that can be easily used by health staff and easily understood by patients are required. The objective of this multicenter study was to analyze the psychometric properties and clinical utility of the Detection of Emotional Distress (DED) scale in advanced cancer patients attending a palliative care unit. METHODS: The DED scale was administered to 105 advanced cancer patients attended in five palliative care units in Catalonia (Spain). RESULTS: A total of 58.3% of the patients had moderate to severe emotional distress, a result similar to those of other scales such as the emotional thermometer. Statistical analysis of ROC curves suggested that the cutoff for the detection of emotional distress by the DED scale was equivalent to a score of ≥ 9 points, with a sensitivity and specificity above 75%. CONCLUSIONS: The DED scale is useful and easy to use in the identification of emotional distress in advanced cancer patients attended in palliative care units. This scale could also be applied in other patients and health care fields, such as patients with chronic diseases, home care, and primary care.