False-Positive Human Immunodeficiency Virus Nucleic Acid Amplification Test After Chimeric Antigen Receptor T-Cell Therapy With Ciltacabtagene Autoleucel.

Chimeric antigen receptor (CAR) T-cell therapy has emerged as a novel therapeutic option for hematologic malignancies. Human immunodeficiency virus (HIV) nucleic acid amplification tests (NAATs) amplifying 5' long terminal repeat and gag genes cross-react with lentiviral vector-based CAR T-cell products. Cross-reactivity between CAR T-cell products and HIV NAATs may lead to false-positive test results.

Polymerase chain reaction in the diagnosis of invasive aspergillosis: approaches for appropriate use.

Detection of aspergillus by PCR is a helpful tool for early diagnosis. The test has excellent sensitivity and specificity with a high negative predictive value. Well-accepted, standardized method for DNA extraction for PCR testing is to be adopted for all commercial assays and conclusive validation data are awaited in varied clinical settings. This perspective offers guidance for utilizing PCR testing while awaiting such data. Quantification by PCR, species-specific identification assays and detection of resistance genetic markers are of future promise. Herein, we summarize the available data on aspergillus PCR and describe its potential utility through a clinical case scenario-based approach.

Mitochondrial toxicity induced by linezolid causing lactic acidosis.

Linezolid-induced lactic acidosis is a rare, but life-threatening complication of a commonly used drug. Patients present with persistent lactic acidosis, hypoglycaemia, high central venous oxygen saturation and shock. Linezolid causes mitochondrial toxicity due to impaired oxidative phosphorylation. This is evidenced by cytoplasmic vacuolations in the myeloid and erythroid precursors of bone marrow smear as illustrated in our case. Discontinuation of the drug, administration of thiamine and haemodialysis reduces lactic acid levels.

Novel Scoring Systems to Predict the Need for Oxygenation and ICU Care, and Mortality in Hospitalized COVID-19 Patients: A Risk Stratification Tool.

INTRODUCTION: A rapid surge in cases during the COVID-19 pandemic can overwhelm any healthcare system. It is imperative to triage patients who would require oxygen and ICU care, and predict mortality. Specific parameters at admission may help in identifying them. METHODOLOGY: A prospective observational study was undertaken in a COVID-19 ward of a tertiary care center. All baseline clinical and laboratory data were captured. Patients were followed till death or discharge. Univariable and multivariable logistic regression was used to find predictors of the need for oxygen, need for ICU care, and mortality. Objective scoring systems were developed for the same using the predictors. RESULTS: The study included 209 patients. Disease severity was mild, moderate, and severe in 98 (46.9%), 74 (35.4%), and 37 (17.7%) patients, respectively. The neutrophil-to-lymphocyte ratio (NLR) >4 was a common independent predictor of the need for oxygen (p<0.001), need for ICU transfer (p=0.04), and mortality (p=0.06). Clinical risk scores were developed (10*c-reactive protein (CRP) + 14.8*NLR + 12*urea), (10*aspartate transaminase (AST) + 15.7*NLR + 14.28*CRP), (10*NLR + 10.1*creatinine) which, if ≥14.8, ≥25.7, ≥10.1 predicted need for oxygenation, need for ICU transfer and mortality with a sensitivity and specificity (81.6%, 70%), (73.3%, 75.7%), (61.1%, 75%), respectively.  Conclusion: The NLR, CRP, urea, creatinine, and AST are independent predictors in identifying patients with poor outcomes. An objective scoring system can be used at the bedside for appropriate triaging of patients and utilization of resources.

Clinical profile of ChAdOx1 nCoV-19- and BBV152-vaccinated individuals among hospitalized COVID-19 patients: a pair-matched study.

Background: COVID-19 infections among severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-vaccinated individuals are of clinical concern, especially in those requiring hospitalization. Such real-world data on ChAdOx1 nCoV-19- and BBV152-vaccinated individuals are scarce. Hence, there is an urgent need to understand their clinical profile and outcomes. Methods: A 1:1 pair-matched study was performed among vaccinated and unvaccinated COVID-19 patients admitted between March 2021 and June 2021 at a tertiary care centre in New Delhi, India. The vaccinated group (received at least one dose of ChAdOx1 nCoV-19 or BBV152) was prospectively followed till discharge or death and matched [for age (±10 years), sex, baseline disease severity and comorbidities] with a retrospective group of unvaccinated patients admitted during the study period. Paired analysis was done to look for clinical outcomes between the two groups. Results: The study included a total of 210 patients, with 105 in each of the vaccinated and unvaccinated groups. In the vaccinated group, 47 (44.8%) and 58 (55.2%) patients had received ChAdOx1 nCoV-19 and BBV152, respectively. However, 73 patients had received one dose and 32 had received two doses of the vaccine. Disease severity was mild in 36.2%, moderate in 31.4% and severe in 32.4%. Two mortalities were reported out of 19 fully vaccinated individuals. All-cause mortality in the vaccinated group was 8.6% (9/105), which was significantly lower than the matched unvaccinated group mortality of 21.9% (23/105), p = 0.007. Vaccination increased the chances of survival (OR = 3.8, 95% CI: 1.42-10.18) compared to the unvaccinated group. Conclusion: In the second wave of the pandemic predominated by delta variant of SARS CoV-2, vaccination reduced all-cause mortality among hospitalized patients, although the results are only preliminary.

Endotipsitis: An Underdiagnosed Complication of Transjugular Intrahepatic Portosystemic Shunts.

Recurrent hematemesis and ascites due to portal hypertension are treated by Transjugular Intrahepatic Portosystemic Shunt (TIPS) to decompress the portal system. Many causes can be attributed to fever in such patients, one of them being, endotipsitis. Awareness among the clinicians about the existence of such a condition needs to be enhanced to avoid underdiagnosis. The diagnosis of endotipsitis, a primary vegetative infection of the TIPS, requires a high index of suspicion. Here we describe one such case that presented with prolonged fever and sustained bacteremia with a history of TIPS thrombosis. After ruling out all possible causes of fever a diagnosis of probable endotipsitis was made and treated successfully with prolonged targeted antimicrobial therapy without further relapses. Only a handful of cases have been described in literature, and there is an urgent need to develop standard management guidelines. Because definitive treatment, which involves removal of the shunt requires liver transplantation, which is not practically feasible always.

Clinico-pathological features in fatal COVID-19 infection: a preliminary experience of a tertiary care center in North India using postmortem minimally invasive tissue sampling.

OBJECTIVES: To study the histopathology of patients dying of COVID-19 using post-mortem minimally invasive sampling techniques. METHODS: This was a single-center observational study conducted at JPNATC, AIIMS. Thirty-seven patients who died of COVID-19 were enrolled. Post-mortem percutaneous biopsies were taken from lung, heart, liver, kidney and stained with hematoxylin and eosin. Immunohistochemistry was performed using CD61 and CD163. SARS-CoV-2 virus was detected using IHC with primary antibodies. RESULTS: The mean age was 48.7 years and 59.5% were males. Lung histopathology showed diffuse alveolar damage in 78% patients. Associated bronchopneumonia was seen in 37.5% and scattered microthrombi in 21% patients. Immunopositivity for SARS-CoV-2 was observed in Type II pneumocytes. Acute tubular injury with epithelial vacuolization was seen in 46% of renal biopsies. Seventy-one percent of liver biopsies showed Kupffer cell hyperplasia and 27.5% showed submassive hepatic necrosis. CONCLUSIONS: Predominant finding was diffuse alveolar damage with demonstration of SARS-CoV-2 protein in the acute phase. Microvascular thrombi were rarely identified in any organ. Substantial hepatocyte necrosis, Kupffer cell hypertrophy, microvesicular, and macrovesicular steatosis unrelated to microvascular thrombi suggested that liver might be a primary target of COVID-19.

Assessment of healthcare worker's hand hygiene and infection prevention practices of their personal belongings in a healthcare setting: a survey in pre COVID-19 era and literature review on standard disinfection practices.

BACKGROUND: Healthcare workers' (HCW) hands and personnel belongings are vehicles of transmission of nosocomial infections. Knowledge, attitude, and practice of hand hygiene have been extensively studied suggesting adequate knowledge but poor compliance. Similar data on aprons, mobile phone and stethoscope disinfection practices are lacking. This becomes an extensively important topic of discussion in current COVID-19 pandemic where inadequacy in hygiene practices is devastating. AIM: To study the knowledge, attitude, and infection prevention practices of HCWs aprons, electronic devices, stethoscopes, and hands. METHODS: A cross sectional questionnaire-based survey was conducted among HCWs of Medicine ward and ICU. RESULTS: Sixty-six HCWs responded to the survey. Awareness that hands, aprons, mobile phones, stethoscopes could cause cross transmission and knowledge of correct practices was present in majority of the respondents. Hand hygiene was performed by 65.2% of the respondents before touching a patient and 54.5% after touching the patient surroundings while 13.6% performed only when it was visibly soiled. Mobile phones and stethoscopes were disinfected by 13.6 and 30.3% of the respondents after each patient encounter, respectively. Aprons were washed after using them at a stretch for a median duration of 5 days (1-30 days). Forgetfulness, lack of reinforcement, lack of time, inadequate awareness on standard disinfection practices and fear of damaging electronic devices from disinfectants use were reasons for poor compliance. CONCLUSIONS: There is an urgent need to spread awareness and formulate standard guidelines on disinfection practices especially for mobile phones, stethoscopes, and aprons in addition to reinforcing hand hygiene practices.

Fungal carriage on healthcare workers' hands, clothing, stethoscopes and electronic devices during routine patient care: a study from a tertiary care center.

BACKGROUND: Invasive fungal infections are a constant threat to immunocompromised and critically ill patients. Healthcare workers caring for such patients act as conduits of transmission through their contaminated hands and belongings causing nosocomial infections. Although bacterial contamination of healthcare workers is known, our knowledge about fungal carriage is sparse. Among the fungi, candida species colonization of hands of healthcare workers is known however it would be interesting to know the type of fungal carriage on their inanimate belongings. AIM: To study the prevalence and type of fungal carriage on healthcare workers hands, aprons/hospital scrubs, electronic devices, and stethoscopes. METHODS: Healthcare workers working in Medicine ward and ICU during November and December 2019 were sampled. Hand washes were collected in Brain Heart Infusion (BHI) broth with gentamycin. Direct impression smears on blood agar were taken from aprons/hospital scrubs. Electronic devices and stethoscopes were sampled using moist cotton swabs. Subculture and plating was done on Sabarouds Dextrose Agar (SDA). Yeasts were identified using Matrix Assisted Laser Desorption Ionisation Time of Flight (MALDI TOF) and moulds were identified using microscopy. FINDINGS: Out of 60 health care workers, 20 (33.3%) had fungal carriage. Aprons/hospital scrubs and hands were contaminated in 17 (28.3%) and 3 (5%) respectively. Aprons/hospital scrubs mainly constituted moulds belonging to species of Aspergillus. Hands were contaminated with Candida tropicalis, Candida parapsilosis and Candida auris. Electronic devices and stethoscopes had no fungal contamination. CONCLUSIONS: Active fungal surveillance provides prevalent carriage rates and serve as a feedback to improve our disinfection and hand hygiene practices. It also aids in identification of potential source of hospital outbreaks.

Pilot study on burden of fungal contamination in face masks: need for better mask hygiene in the COVID-19 era.

Risk factors which led to the outbreak of COVID-19 associated Mucormycosis still remains elusive. Face masks can become contaminated by fungal spores that are present ubiquitously in the environment. However the exact burden of such contamination is not known. Fifty masks of patients who attended the Employees Health Scheme COVID-19 facility of a tertiary healthcare centre in India were sampled by direct impression smears on Sabouraud Dextrose Agar. Agar plates were screened for any growth within five days after incubation. Growth was identified by microscopy on the Lactophenol Cotton Blue mount. Mask hygiene practices of participants was assessed using a pre-designed proforma. Out of 50 masks, fungal contamination was seen in 35/50 (70%) masks, with Aspergillus sp. being isolated from 26/50 (52%) masks and Mucorales being isolated from 9/50 (18%) of the masks. Aspergillus niger, Rhizopus a rrhizus and Syncephalastrum sp. were the most common species isolated. Same mask was worn for a median duration of 8 days (2-30 days) at a stretch with or without washing. Thirty one patients washed and re-wore their masks, with median time duration since last wash being 12 hours (4-72 hours). None of the factors assessed for mask hygiene were associated with fungal contamination. High rates of fungal contamination observed in our study emphasizes the need for better mask hygiene in the COVID-19 era.

Intricate interplay between Covid-19 and cardiovascular diseases.

Covid-19 disease can involve any organ system leading to myriad manifestations and complications. Cardiovascular manifestations are being increasingly recognised with the improved understanding of the disease. Acute coronary syndrome, myocarditis, arrhythmias, cardiomyopathy; heart failure and thromboembolic disease have all been described. The elderly and those with prior cardiac diseases are at an increased risk of mortality. Overlapping symptomatology, ability of drugs to cause QTc interval (start of Q wave to the end of T wave) prolongation on electrocardiogram and arrhythmias, potential drug interactions, the need to recognise patients requiring urgent definitive management and provide necessary bedside interventions without increasing the risk of nosocomial spread have made the management challenging. In the background of a pandemic, non-Covid-19 cardiac patients are affected by delayed treatment and nosocomial exposure. Triaging using telemedicine and artificial intelligence along with utilization of bedside rapid diagnostic tests to detect Covid-19 could prove helpful in this aspect.

Persistent Laparoscopic Port-site Discharging Sinus: A Rare Case of Mycobacterium senegalense Infection.

Laparoscopic port-site infections, though infrequent, undermine the advantages provided by minimally invasive surgeries. Persistent nonhealing discharging sinuses, not responding to conventional antibiotic therapy, pose diagnostic and therapeutic challenges. Sizeable number of these infections is caused by rapidly growing nontuberculous mycobacteria (NTM), and diagnosing these requires a high index of suspicion. We present a case of a nonhealing laparoscopic cholecystectomy umbilical port-site infection caused by Mycobacterium senegalense, a rare NTM. The patient recovered completely after 6 months of combination therapy with clarithromycin, trimethoprim-sulfamethoxazole, and levofloxacin.

Severe Immune Thrombocytopenia in a Patient with HIV-HCV Co-infection: Challenges in Management.

Immune thrombocytopenia is a well-known complication of both HIV and Hepatitis C virus infections. Management becomes challenging when a patient with HCV-HIV co-infection presents with severe thrombocytopenia. Adverse drug reactions and drug interactions has to be considered while choosing treatment options for such patients. We report such a case which illustrates the difficulty in managing severe thrombocytopenia in HCV-HIV co-infected patients where evidence based clinical decision making helped in choosing the right therapy for the patient.

Tuberculosis masquerading as metastasis in liver: a rare and an unusual presentation.

Hepatosplenic space occupying lesions are usually labelled as metastasis. This case highlights the importance of thinking beyond malignancy and the importance of adopting a systematic approach when dealing with such lesions that have a plethora of close differentials. Hepatosplenic tuberculosis is a rare form of extra pulmonary tuberculosis. Timely diagnosis and treatment turned the table from a probable dismal prognosis to a completely curable cause. We report an unusual case, which was provisionally labelled as malignancy, due to isolated liver and spleen involvement but on evaluation turned out to be tuberculosis. The patient got cured with 6 months of anti-tubercular therapy. The report also brings to light the possible use of molecular methods like cartridge-based nucleic acid amplification test in diagnosing hepatobiliary tuberculosis, the literature about which is very scarce and limited.

B Cell ALL with Pyrexia of Unknown Origin, Masquerading as Inflammatory Arthritis.

ABSTRACT: We present a young male, with long standing fever, weight loss, bone pains, hepatosplenomegaly, cytopenias and severe joint pains. With normal peripheral smear and predominant joints involvement, he was started on corticosteroids. The partial response prompted the physician to continue the steroids. After some time, however, joints and bony pains worsened. After referral to us, he was found to have multiple bony lytic lesions and peripheral smear suggested B cell ALL. So, presentation predominantly with musculoskeletal symptoms, a normal peripheral smear and a partial therapeutic response to steroids as treatment of Systemic Juvenile Idiopathic Arthritis, delayed the diagnosis significantly leading to complications. So through our report we would like to stress that suspecting and diagnosing leukaemia early is important to prevent complications and resistance to treatment. An early bone marrow examination should also be instituted as a standard of care in peripheral smear negative patients.