Thromboelastography clot strength profiles and effect of systemic anticoagulation in COVID-19 acute respiratory distress syndrome: a prospective, observational study.

OBJECTIVE: Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2) infection may yield a hypercoagulable state with fibrinolysis impairment. We conducted a single-center observational study with the aim of analyzing the coagulation patterns of intensive care unit (ICU) COVID-19 patients with both standard laboratory and viscoelastic tests. The presence of coagulopathy at the onset of the infection and after seven days of systemic anticoagulant therapy was investigated. PATIENTS AND METHODS: Forty consecutive SARS-CoV-2 patients, admitted to the ICU of a University hospital in Italy between 29th February and 30th March 2020 were enrolled in the study, providing they fulfilled the acute respiratory distress syndrome criteria. They received full-dose anticoagulation, including Enoxaparin 0.5 mg·kg-1 subcutaneously twice a day, unfractionated Heparin 7500 units subcutaneously three times daily, or low-intensity Heparin infusion. Thromboelastographic (TEG) and laboratory parameters were measured at admission and after seven days. RESULTS: At baseline, patients showed elevated fibrinogen activity [rTEG-Ang 80.5° (78.7 to 81.5); TEG-ACT 78.5 sec (69.2 to 87.9)] and an increase in the maximum amplitude of clot strength [FF-MA 42.2 mm (30.9 to 49.2)]. No alterations in time of the enzymatic phase of coagulation [CKH-K and CKH-R, 1.1 min (0.85 to 1.3) and 6.6 min (5.2 to 7.5), respectively] were observed. Absent lysis of the clot at 30 minutes (LY30) was observed in all the studied population. Standard coagulation parameters were within the physiological range: [INR 1.09 (1.01 to 1.20), aPTT 34.5 sec (29.7 to 42.2), antithrombin 97.5% (89.5 to 115)]. However, plasma fibrinogen [512.5 mg·dl-1 (303.5 to 605)], and D-dimer levels [1752.5 ng·ml-1 (698.5 to 4434.5)], were persistently increased above the reference range. After seven days of full-dose anticoagulation, average TEG parameters were not different from baseline (rTEG-Ang p = 0.13, TEG-ACT p = 0.58, FF-MA p = 0.24, CK-R p = 0.19, CKH-R p  = 0.35), and a persistent increase in white blood cell count, platelet count and D-dimer was observed (white blood cell count p < 0.01, neutrophil count p = 0.02, lymphocyte count p < 0.01, platelet count p = 0.13 < 0.01, D-dimer levels p= 0.02). CONCLUSIONS: SARS-CoV-2 patients with acute respiratory distress syndrome show elevated fibrinogen activity, high D-dimer levels and maximum amplitude of clot strength. Platelet count, fibrinogen, and standard coagulation tests do not indicate a disseminated intravascular coagulation. At seven days, thromboelastographic abnormalities persist despite full-dose anticoagulation.

Clinical and microbiological outcome in septic patients with extremely low 25-hydroxyvitamin D levels at initiation of critical care.

A relationship between vitamin D status and mortality in patients in intensive care units (ICU) has been documented. The present study aims to describe the clinical profile and sepsis-related outcome of critically ill septic patients with extremely low (<7 ng/mL) vitamin D levels at ICU admission. We conducted an observational study in the ICU of a teaching hospital including all patients admitted with severe sepsis/septic shock and undergoing 25-hydroxyvitamin D (25(OH)D) testing within the first 24 hours from admission. We studied 107 patients over 12 months. At ICU admission vitamin D deficiency (≤20 ng/mL) was observed in 93.5% of the patients: 57 (53.3%) showed levels <7 ng/mL. As primary outcome, sepsis-related mortality rate was higher in patients with vitamin D levels <7 ng/mL (50.9% versus 26%). Multivariate regression analysis showed that vitamin D concentration <7 ng/mL on ICU admission (p 0.01) and higher mean SAPS II (p <0.01) score were independent predictors of sepsis-related mortality. Patients with very low vitamin D levels suffered higher rate of microbiologically confirmed infections but a lower percentage of microbiological eradication with respect to patients whose values were >7 ng/mL (80.7% versus 58%, p 0.02; 35.3% versus 68%; p 0.03, respectively). Post hoc analysis showed that, in the extremely low vitamin D group, the 52 patients with pneumonia showed a longer duration of mechanical ventilation (9 days (3.75-12.5 days) versus 4 days (2-9 days), p 0.04) and the 66 with septic shock needed vasopressor support for a longer period of time (7 days (4-10 days) versus 4 days (2-7.25 days), p 0.02). Our results suggest that in critical septic patients extremely low vitamin D levels on admission may be a major determinant of clinical outcome. Benefits of vitamin D replacement therapy in this population should be elucidated.

Diurnal and nocturnal shifts do not influence non-invasive ventilation outcome.

AIM: The aim of this study was to assess if diurnal or nocturnal shifts were independent risk factors for non-invasive ventilation (NIV) failure. METHODS: This was an observational study carried out on 18 patients of the general Intensive Care Unit in Rome. A total number of 189 consecutive patients needing mechanical ventilation for respiratory failure were prospectively enrolled: 82 were treated with NIV as a first line intervention. Of the 107 patients who were initially intubated, 59 patients were extubated; once extubation failed they were treated with NIV. NIV failure was assessed during both the day (between 7 am and 10 pm) and night shifts (between 10 pm and 7 am). RESULTS: Of the 141 total patients who received NIV, 51 experienced failure during the day shifts and 18 during the night shifts. No difference in the median day and night shift TISS-28 values were observed in any patients who failed NIV during both day and night shifts. Causes of NIV failure were similar during both diurnal and nocturnal shifts. The inability to correct gas exchanges was the main reason for failure. CONCLUSION: In a center with NIV expertise, notwithstanding nurse understaffing, diurnal and nocturnal shifts did not affect the rate of NIV failure.

Diagnostic accuracy of bedside ultrasonography in the ICU: feasibility of detecting pulmonary effusion and lung contusion in patients on respiratory support after severe blunt thoracic trauma.

BACKGROUND: Blunt thoracic trauma is a major concern in critically ill patients. Repeated lung diagnostic evaluations are needed in order to follow up the clinical situation and the results of the therapeutic strategies. The aim of this prospective clinical study was to evaluate the possible role of lung ultrasound (LU) compared with bedside radiography (CXR) and computed tomography (CT) used as the gold standard in the evaluation of trauma patients admitted to the intensive care unit with acute respiratory failure. METHOD: A total of 15 thoracic trauma patients were studied at intensive care unit (ICU) arrival (T1) and 48 h later (T2) with CT, CXR and LU. We evaluated the presence of pleural effusion (PE) and lung contusion (LC). For this purpose the lung parenchyma was divided into 12 regions so that we could compare 180 lung regions at T1 and T2, respectively. RESULTS: Sensitivity of ultrasound was 0.94 for PE and 0.86 for LC while specificity 0.99 and 0.97, respectively. The likelihood ratio was 94 (rho(+)) and 0.06 (rho(-)) for PE and 28.6 (rho(+)) and 0.14 (rho(-)) for LC. CONCLUSIONS: Ultrasound provides a reliable noninvasive, bedside method for the assessment of chest trauma patients with acute respiratory failure in the ICU.

Combined voriconazole plus caspofungin therapy for the treatment of probable Geotrichum pneumonia in a leukemia patient.

Infections by Geotrichum capitatum, occurring in leukemia patients, are rarely reported and generally are characterized by a poor prognosis. Here we reported a case of G. capitatum pneumonia in a patient with plasma cell leukemia, successfully treated with antifungal combination with voriconazole and caspofungin and supportive therapy.

[Epidemiologic correlation between microhematuria in children and hypertension in their parents]. / Correlazione epidemiologica fra microematuria nei bambini ed ipertensione nei genitori.

The significance of asymptomatic microhematuria in children is unknown. In 1976 Dodge et al. found a "surprising" high prevalence of proteinuria and haematuria in 12,000 healthy schoolchildren and, in the absence of knowledge of the natural history, this finding prompted them to postpone urinary mass screening. Nonetheless, the progressive course of most chronic renal disease in adulthood argues for investigation of microhematuria in children to uncover any sub-groups "at risk" of kidney diseases. The sensitivity of screening for microhematuria could be increased by a questionnaire on family medical history? We have investigated 1554 boys and 1484 girls aged 3-12 years, from the school population of a rural district near Rome. A self-administered questionnaire on renal disease and related symptoms in families was distributed to the parents. Urinalyses were done on all the children except for those with diseases or symptoms related to the urinary apparatus and girls who were menstruating. Haematuria was tested for by dipstick ("Combur 7"; Boehringer), children with microhematuria were retested 10 day and 1 year later. On the initial 3038 dipstick tests 175 (5.76%) were positive, and 52 children (1.71%) had haematuria in all three specimens. The questionnaires were used only if they had been filled in properly (1821/3038). Of the 1821 valid questionnaires 121 (6.64%) revealed a family history of hypertension, but the frequency of such a family history was significantly higher for the 128 children with haematuria (14.8%, p < 0.005) and the 52 with persistent haematuria (23.0%; p < 0.001).

Atopy and environmental factors in upper respiratory infections: an epidemiological survey on 2304 school children.

Upper respiratory infections (URI) during the first years of life are mostly viral in origin. However, a number of observations suggest the influence of both predisposing and triggering factors. Atopy in particular seems to play an important role as do environmental factors. Many children with early symptoms such as blocked or runny nose are likely to become skin-positive later in life to antigens such as, e.g., D. pteronissinus. A standardized questionnaire was administered to 2304 schoolchildren in order to ascertain the URI frequency and to correlate it with family and environmental factors and with results of prick tests for main allergens in our climate (D. pteronissinus and Grasses). Results showed a wide overlapping of URI and lower respiratory illnesses (in particular, asthma), which are widely distributed in the families of patients. Passive smoking and the quality of housing are the main triggering environmental factors. In our sample, skin positivity for D. pteronissinus and Grasses largely exceeds the symptomatic portion of the whole population. It is therefore suggested that many asymptomatic children are "at risk" for allergic respiratory illness. The highest incidence of winter rhinitis in skin-negative subjects (71.7%) and the skin positivity for D. pteronissinus in patients with perennial symptoms, suggest the importance of both atopy and viral infections in the occurrence of URI. Nasal troubles are most frequent in asthmatic subjects and may be considered the actual additional symptom in asthma.