scholarly journals Nanosilica and Polyacrylate/Nanosilica: A Comparative Study of Acute Toxicity

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Ying-Mei Niu ◽  
Xiao-Li Zhu ◽  
Bing Chang ◽  
Zhao-Hui Tong ◽  
Wen Cao ◽  
...  
Keyword(s):  
Pleural Effusion ◽  
Mortality Rate ◽  
Pericardial Effusion ◽  
Acute Toxicity ◽  
Comparative Study ◽  
Wistar Rats ◽  
Multiple Organ ◽  
Organ Toxicity ◽  
Arterial Blood ◽  
Respiratory Exposure

We compared the acute toxicity of nanosilica and polyacrylate/nanosilica instillation in Wistar rats (n=60). Exposure to nanosilica and polyacrylate/nanosilica showed a 30% mortality rate. When compared with saline-treated rats, animals in both exposure groups exhibited a significant reduction of PO2(P<0.05) at both 24 and 72 hr. after exposure. Both exposure groups exhibited a significant reduction of neutrophils in arterial blood compared to saline controls (P<0.05) 24 hr. after exposure. The levels of blood ALT and LDH in exposed groups were found to be significantly increased (P<0.05) 24 hr. following exposure. The exposed groups exhibited various degrees of pleural effusion and pericardial effusion. Our findings indicated respiratory exposure to polyacrylate/nanosilica and nanosilica is likely to cause multiple organ toxicity.

Clinical outcome of V-Y flap with latissimus dorsi and gluteal advancement for treatment of large thoracolumbar myelomeningocele defects: a comparative study

2019 ◽  
Vol 24 (1) ◽  
pp. 75-84
Author(s):  
Mohammad Sadegh Masoudi ◽  
Mohammad Ali Hoghoughi ◽  
Fariborz Ghaffarpasand ◽  
Shekoofeh Yaghmaei ◽  
Maryam Azadegan ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Comparative Study ◽  
Surgical Site Infection ◽  
Latissimus Dorsi ◽  
Primary Closure ◽  
Wound Dehiscence ◽  
Site Infection ◽  
Gluteal Muscle ◽  
Operative Duration ◽  
Csf Leakage

OBJECTIVESurgical repair and closure of myelomeningocele (MMC) defects are important and vital, as the mortality rate is as high as 65%–70% in untreated patients. Closure of large MMC defects is challenging for pediatric neurosurgeons and plastic surgeons. The aim of the current study is to report the operative characteristics and outcome of a series of Iranian patients with large MMC defects utilizing the V-Y flap and with latissimus dorsi or gluteal muscle advancement.METHODSThis comparative study was conducted during a 4-year period from September 2013 to October 2017 in the pediatric neurosurgery department of Shiraz Namazi Hospital, Southern Iran. The authors included 24 patients with large MMC defects who underwent surgery utilizing the bilateral V-Y flap and latissimus dorsi and gluteal muscle advancement. They also retrospectively included 19 patients with similar age, sex, and defect size who underwent surgery using the primary or delayed closure techniques at their center. At least 2 years of follow-up was conducted. The frequency of leakage, necrosis, dehiscence, systemic infection (sepsis, pneumonia), need for ventriculoperitoneal shunt insertion, and mortality was compared between the 2 groups.RESULTSThe bilateral V-Y flap with muscle advancement was associated with a significantly longer operative duration (p < 0.001) than the primary closure group. Those undergoing bilateral V-Y flaps with muscle advancement had significantly lower rates of surgical site infection (p = 0.038), wound dehiscence (p = 0.013), and postoperative CSF leakage (p = 0.030) than those undergoing primary repair. The bilateral V-Y flap with muscle advancement was also associated with a lower mortality rate (p = 0.038; OR 5.09 [95% CI 1.12–23.1]) than primary closure. In patients undergoing bilateral V-Y flap and muscle advancement, a longer operative duration was significantly associated with mortality (p = 0.008). In addition, surgical site infection (p = 0.032), wound dehiscence (p = 0.011), and postoperative leakage (p = 0.011) were predictors of mortality. Neonatal sepsis (p = 0.002) and postoperative NEC (p = 0.011) were among other predictors of mortality in this group.CONCLUSIONSThe bilateral V-Y flap with latissimus dorsi or gluteal advancement is a safe and effective surgical approach for covering large MMC defects and is associated with lower rates of surgical site infection, dehiscence, CSF leakage, and mortality. Further studies are required to elucidate the long-term outcomes.

scholarly journals Infective endocarditis caused by HACEK group bacteria—a registry-based comparative study

2021 ◽  
Author(s):  
Anna Bläckberg ◽  
Christian Morenius ◽  
Lars Olaison ◽  
Andreas Berge ◽  
Magnus Rasmussen
Keyword(s):  
Staphylococcus Aureus ◽  
Infective Endocarditis ◽  
Mortality Rate ◽  
Haemophilus Influenzae ◽  
Comparative Study ◽  
Clinical Characteristics ◽  
Prosthetic Valve ◽  
Prosthetic Valve Endocarditis ◽  
Common Cause ◽  
Prosthetic Valves

AbstractInfective endocarditis (IE) caused by bacteria within Haemophilus (excluding Haemophilus influenzae), Aggregatibacter, Cardiobacterium, Eikenella and Kingella (HACEK) is rare. This study aimed to describe clinical features of IE caused by HACEK genera in comparison with IE due to other pathogens. Cases of IE due to HACEK were identified through the Swedish Registry of Infective Endocarditis (SRIE). Clinical characteristics of IE cases caused by HACEK were compared with cases of IE due to other pathogens reported to the same registry. Ninety-six patients with IE caused by HACEK were identified, and this corresponds to 1.8% of all IE cases. Eighty-three cases were definite endocarditis, and the mortality rate was 2%. The median age was 63 years, which was lower compared to patients with IE caused by other pathogens (66, 70 and 73 years respectively, p ≤ 0.01). Patients with IE caused by Haemophilus were younger compared to patients with IE due to Aggregatibacter (47 vs 67 years, p ≤ 0.001). Patients with IE due to HACEK exhibited longer duration from onset of symptoms to hospitalization and had more prosthetic valve endocarditis compared to patients with IE due to Staphylococcus aureus (10 vs 2 days, p ≤ 0.001, and 35 vs 14%, p ≤ 0.001). This is, to date, the largest study on IE due to HACEK. Aggregatibacter was the most common cause of IE within the group. The condition has a subacute onset and often strikes in patients with prosthetic valves, and the mortality rate is relatively low.

scholarly journals Age is not the only risk factor in COVID-19: the role of comorbidities and of long staying in residential care homes

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
M. D’ascanio ◽  
M. Innammorato ◽  
L. Pasquariello ◽  
D. Pizzirusso ◽  
G. Guerrieri ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Elderly Patients ◽  
Clinical Outcomes ◽  
Residential Care ◽  
Pneumonia Severity Index ◽  
Care Homes ◽  
Categorical Variables ◽  
Rank Test ◽  
Very Elderly ◽  
Arterial Blood

Abstract Background The actual SARS-CoV-2 outbreak caused a highly transmissible disease with a tremendous impact on elderly people. So far, few studies focused on very elderly patients (over 80 years old). In this study we examined the clinical presentation and the outcome of the disease in this group of patients, admitted to our Hospital in Rome. Methods This is a single-center, retrospective study performed in the Sant’Andrea University Hospital of Rome. We included patients older than 65 years of age with a diagnosis of COVID-19, from March 2020 to May 2020, divided in two groups according to their age (Elderly: 65–80 years old; Very Elderly > 80 years old). Data extracted from the each patient record included age, sex, comorbidities, symptoms at onset, the Pneumonia Severity Index (PSI), the ratio of the partial pressure of oxygen in arterial blood (PaO2) to the inspired oxygen fraction (FiO2) (P/F) on admission, laboratory tests, radiological findings on computer tomography (CT), length of hospital stay (LOS), mortality rate and the viral shedding. The differences between the two groups were analyzed by the Fisher’s exact test or the Wilcoxon signed-rank test for categorical variables and the Mann-Whitney U test for continuous variables. To assess significance among multiple groups of factors, we used the Bonferroni correction. The survival time was estimated by Kaplan-Meier method and Log Rank Test. Univariate and Multivariate logistic regression were performed to estimate associations between age, comorbidities, provenance from long-stay residential care homes (LSRCH) s and clinical outcomes. Results We found that Very Elderly patients had an increased mortality rate, also due to the frequent occurrence of multiple comorbidities. Moreover, we found that patients coming from LSRCHs appeared to be highly susceptible and vulnerable to develop severe manifestations of the disease. Conclusion We demonstrate that there were considerable differences between Elderly and Very Elderly patients in terms of inflammatory activity, severity of disease, adverse clinical outcomes. To establish a correct risk stratification, comorbidities and information about provenience from LSRCHs should be considered.

acute and sub-acute toxicity studies of aqueous leaf extract of launaea taraxacifolia (willd.) in wistar rats

2021 ◽  
Vol 12 (1) ◽  
pp. 95
Author(s):  
Millicent Umaru ◽  
Kabiru Abubakar ◽  
Gabriel Uyaiabasi ◽  
Giaze Tijjani ◽  
Yusuf Alkali ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Wistar Rats ◽  
Leaf Extract ◽  
Toxicity Studies ◽  
Aqueous Leaf Extract

scholarly journals COVID-19 and Multiorgan Dysfunction Syndrome

2021 ◽  
Author(s):  
Jitendra D. Lakhani ◽  
Sajni Kapadia ◽  
Rohit Choradiya ◽  
Roop Preet Gill ◽  
Som J. Lakhani
Keyword(s):  
Organ Failure ◽  
Kidney Injury ◽  
Glycemic Variability ◽  
Multiple Organ ◽  
Organ Support ◽  
Arterial Blood Gas ◽  
Arterial Blood ◽  
Treatment Support ◽  
Laboratory Investigations ◽  
Hospital Acquired

Severe acute respiratory syndrome (SARS) is the leading cause of death in COVID-19 infection, however, multi-organ dysfunction due to COVID-19 and/or because of co-morbidities is a usual accompaniment causing unfavorable outcome. Early detection of organ failure and giving appropriate organ support may improve the chances of survival. Arterial Blood Gas (ABG) analysis; electrolytes coupled with clinical picture and with organ related laboratory investigations may help in diagnosis of MODS and sepsis in COVID-19 SEVERE SYNDROME. Acute kidney injury (AKI), myocarditis, thromboembolism, acute liver de-compensation, hospital acquired infections, cardiac arrest, glycemic variability, thyroid dysfunction and other organ failure may lead to MODS.As patients having multiple organ syndrome requires ICU admission and interventions like intubation, hemodialysis and other extracorporeal treatment support knowing holistically about “COVID-19 MODS” is important for treating physicians.

scholarly journals The course and survival of patients with liver cirrhosis and acute liver failure on the background of chronic

2020 ◽  
Vol 98 (2) ◽  
pp. 137-141
Author(s):  
S. A. Avezov ◽  
S. M. Azimova ◽  
M. H. Abdulloev
Keyword(s):  
Liver Cirrhosis ◽  
Mortality Rate ◽  
Liver Failure ◽  
Organ Failure ◽  
Predictive Factors ◽  
Clinical Signs ◽  
Multiple Organ ◽  
Kaplan Meier ◽  
Short Term Mortality ◽  
Acute Decompensation

Aims. We comparative investigated the frequency, precipitating factors, lifetimes and predictive factors of survival in patients with liver cirrhosis (LC) and acute-on-chronic liver failure (ACLF). Material and methods. We collected data from 310 hospitalized patients with LC. Patients divided into groups: 1 — patients with compensation of LC; 2 — patients with decompensation of LC, but without organ failure (OF) and 3 — patients with ACLF. Diagnostic criteria for ACLF based on consensus recommendations of EASL. Survival was assessed according to the Kaplan-Meier method. Results. 48 patients with LC reported clinical signs of ACLF. 28-day mortality was in 4,8% of patients without ACLF and in 42,0% of patients with ACLF. 90-day mortality of patients with ACLF was 50% versus 11.6% in patients without ACLF. 6-month survival rate of patients with the development of acute decompensation with organ failure was only 33,3%. The lifetimes of patients with ACLF was only 136,65 ± 18,96 days. The predictive factors of survival of patients with LC and ACLF are: the number of organ failure, indicators of CLIF-SOFA and MELD, Child-Pugh score, degree of hepatic encephalopathy, leukocytosis, hyperbilirubinemia, hypercreatininemia and increased INR. Conclusion. The prevalence of ACLF in patients with LC is 15,5% and develops against a background of stable compensated or decompensated CP. The frequent trigger of ACLF is infection, which causes acute decompensation with the development of multiple organ failure and a high incidence of short-term mortality. The 28-day mortality rate in patients with ACLF was 8.7 times greater than the mortality rate in patients with decompensated LC without ACLF.

scholarly journals Clinical Prognosis of Pericardial Effusion in COVID 19

2021 ◽  
Author(s):  
İbrahim Saraç ◽  
Gökhan Tonkaz ◽  
Emrah Aksakal ◽  
Faruk Aydınyılmaz ◽  
Kaan Alişar ◽  
...  
Keyword(s):  
Intensive Care ◽  
Mortality Rate ◽  
Pericardial Effusion ◽  
Hospital Mortality ◽  
Elevated Serum ◽  
Clinical Prognosis ◽  
Pneumonia Severity ◽  
Polymerase Chain ◽  
The Relationship

Abstract Purpose In our study, we investigated the relationship between pneumonia severity and pericardial effusion, predisposing factors and the effect of pericardial effusion on clinical prognosis and mortality in COVID-19 patients. Methods A total of 3794 patients who were diagnosed with COVID- 19 by polymerase chain reaction (PCR), were hospitalized between March 21 and November 30, 2020 were included in the study. For each of the 3794 patients, the initial chest CT images, pericardial efusion (PE), pleural efusion and pneumonia severity were evaluated. Results The mean age of patients with PE was higher and it was more common in males. Patients with PE had more comorbid diseases and significantly elevated serum cardiac and inflammatory biomarkers. In addition, the need for intensive care and mortality rates were higher in these patients. While the in-hospital mortality rate was 56.9% in patients with PE and AC involvement above 50%, in-hospital mortality rate was 34.4% in patients with AC involvement above 50% and without PE (p < 0.001). Conclusions In patients presenting with severe AC involvement on CT or being followed up with COVID-19 pneumonia, PE often accompanies the deterioration in the laboratories and clinics of the patients. The clinical prognosis in patients presenting with PE was quite poor, and the frequency of intensive care admissions and mortality were significantly higher. In conclusion, in our study, PE emerged as an important finding in the follow-up and management of patients with COVID-19 and reflects the clinical prognosis.

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