Liver Dysfunction in Severe Sepsis from Respiratory Syncytial Virus

Clinical manifestations, para-clinical features and outcome of Iranian adults with respiratory syncytial virus (RSV) infection: a report from hospitalized patients

BACKGROUND

Respiratory syncytial virus (RSV) is an important cause of children's pulmonary infections. However, there are fewer studies on RSV infections in adults. The purpose of this study was to describe the clinical manifestations, para-clinical characteristics, and outcome of RSV infection among adult patients who were referred to the Imam Khomeini Hospital Complex during the winter and spring of 2022-2023.

METHODS

From December 21, 2022, to May 20, 2023, we conducted a cross-sectional study on hospitalized adults having positive RT-PCR results for RSV. We further assessed the clinical and para-clinical characteristics and outcomes of the RSV groups.

RESULTS

We screened 1375 adults with suspected acute respiratory infections (ARIs) and confirmed RSV infections in 59 of them (4.3%). Of these, 23 patients were excluded from further analysis due to outpatient management, leaving 36 hospitalized patients with confirmed RSV infection (61.01%). The mean age of the hospitalized patients was 53.28 ± 20.37 years (range: 15-83), with a slightly higher proportion of females (52.80%) compared to males (47.20%). Dyspnea, productive cough, and fever were the most common symptoms, with a mean symptom duration of 10.50 days. Ischemic heart disease, hypertension, and liver failure were common underlying conditions. Notably, biochemical and inflammatory markers such as CRP, ESR, and LDH were significantly elevated beyond the normal range. Finally, five patients (13.9%) who received intensive care treatments died.

CONCLUSIONS

Although the rate of RSV infection was not high among Iranian adults, a greater proportion of patients required hospitalization (61%). There was a significant link between liver failure, an elevated INR, more than 30% bilateral pulmonary involvement, abdominal pain, longer ICU stays, and immunodeficiency cases with increased mortality from RSV infection. We suggest that RSV infection may act as a secondary factor in decompensating pre-existing liver failure, which was present in certain patients with underlying conditions, potentially leading to life-threatening consequences.

Fournier gangrene in an infant, complicated with severe sepsis and liver dysfunction: A case report

BACKGROUND

Fournier gangrene is a rare, life-threatening infection characterized by necrotizing fasciitis in the perineal, genital and/or lower abdominal regions. Despite its rarity, the unfavorable prognosis associated with this disease is dependent on the timing of medical care.

CASE SUMMARY

A 3-month-old boy was admitted to our pediatric intensive care unit in critical condition after a 5-day history of fever and scrotal erythema with breaching skin lesions and swelling. Despite ambulatory antibiotic treatment, the child's clinical condition deteriorated. At the time of admission, the child had necrotizing scrotal fasciitis that had spread to the abdomen. Following reanimation, the surgeon decided on an immediate intervention to rule out testicular torsion and to debride the affected area. Despite optimal antibiotic and supportive therapy, the patient developed severe sepsis with liver dysfunction, making treatment more challenging.

CONCLUSION

Recognizing Fournier gangrene, prompt referral to pediatric surgery, and appropriate antibiotic coverage are critical for avoiding sepsis and multiorgan dysfunction.

Downregulation of the Protein C Signaling System Is Associated with COVID-19 Hypercoagulability-A Single-Cell Transcriptomics Analysis

Because of the interface between coagulation and the immune response, it is expected that COVID-19-associated coagulopathy occurs via activated protein C signaling. The objective was to explore putative changes in the expression of the protein C signaling network in the liver, peripheral blood mononuclear cells, and nasal epithelium of patients with COVID-19. Single-cell RNA-sequencing data from patients with COVID-19 and healthy subjects were obtained from the COVID-19 Cell Atlas database. A functional protein-protein interaction network was constructed for the protein C gene. Patients with COVID-19 showed downregulation of protein C and components of the downstream protein C signaling cascade. The percentage of hepatocytes expressing protein C was lower. Part of the liver cell clusters expressing protein C presented increased expression of ACE2. In PBMC, there was increased ACE2, inflammatory, and pro-coagulation transcripts. In the nasal epithelium, PROC, ACE2, and PROS1 were expressed by the ciliated cell cluster, revealing co-expression of ACE-2 with transcripts encoding proteins belonging to the coagulation and immune system interface. Finally, there was upregulation of coagulation factor 3 transcript in the liver and PBMC. Protein C could play a mechanistic role in the hypercoagulability syndrome affecting patients with severe COVID-19.

Hepatic involvement in children with acute bronchiolitis

BACKGROUND

Respiratory syncytial virus (RSV) is a prevalent cause of lower respiratory tract infections. It may be associated with hepatocellular involvement, as indicated by increased liver enzymes aspartate aminotransferase and alanine transaminase (ALT).

AIM

To evaluate the rate of increased liver enzyme levels in children with acute bronchiolitis and correlate them with clinical, laboratory, and radiological variables.

METHODS

The study was a retrospective review of the medical records of children who presented with acute bronchiolitis when admitted to the Pediatric Department, Salmaniya Medical Complex, the Kingdom of Bahrain, between 2019 and 2020. We collected the demographic data, the clinical presentation, the laboratory and radiological findings, and the clinical outcomes. We compared the patients with elevated liver enzymes to those with normal levels at the time of presentation and at follow-up.

RESULTS

We included 166 (57.8%) of 287 patients with acute bronchiolitis who fulfilled the inclusion criteria. Ninety-three (56%) patients were males. The median age at presentation was 3.4 (interquartile range 1.1 to 12.4) mo. Fifty-four (28%) patients tested positive for RSV, which was confirmed in 15 of them (28%) by PCR. Laboratory findings of 161 patients tested at presentation showed high ALT levels in 14 (8.7%) patients and normal ALT in 147 (91.3%). Coagulation profiles were measured in 46 (27.7%) of 166 patients. High prothrombin time was present in 15 (32.6%), a high international normalized ratio was present in 13 (28.3%), and high activated partial thromboplastin time was present in three (6.5%). Thrombin time was elevated in nine (27.3%) of 33 patients. Five (21.7%) of 23 patients with available radiological data had hepatomegaly; one of them had findings suggestive of fatty infiltration. High ALT had a significant association with lengthy hospital stays (P < 0.05) and positive urine culture (P < 0.05). Seventy (42.2%) patients had documented follow-up with liver function tests over a median follow-up period of 10.2 (IQR, 2.4-23.3) mo. Total serum protein and serum globulin levels were normalized at the follow-up time, with a significant P value of < 0.05.

CONCLUSION

This study showed a low prevalence of liver function involvement in patients with acute bronchiolitis with a benign course. However, there was a rising trend in ALT during follow-up. Prolonged hospital stay and positive urine cultures were associated with elevated liver enzymes.

Respiratory viral sepsis: epidemiology, pathophysiology, diagnosis and treatment

According to the Third International Consensus Definition for Sepsis and Septic Shock, sepsis is a life-threatening organ dysfunction resulting from dysregulated host responses to infection. Epidemiological data about sepsis from the 2017 Global Burden of Diseases, Injuries and Risk Factor Study showed that the global burden of sepsis was greater than previously estimated. Bacteria have been shown to be the predominant pathogen of sepsis among patients with pathogens detected, while sepsis caused by viruses is underdiagnosed worldwide. The coronavirus disease that emerged in 2019 in China and now in many other countries has brought viral sepsis back into the vision of physicians and researchers worldwide. Although the current understanding of the pathophysiology of sepsis has improved, the differences between viral and bacterial sepsis at the level of pathophysiology are not well understood. Diagnosis methods that can broadly differentiate between bacterial and viral sepsis at the initial stage after the development of sepsis are limited. New treatments that can be applied at clinics for sepsis are scarce and this situation is not consistent with the growing understanding of pathophysiology. This review aims to give a brief summary of current knowledge of the epidemiology, pathophysiology, diagnosis and treatment of viral sepsis.