Persistent Pneumonia Research Articles

Immunodeficiency-Related Vaccine-Derived Poliovirus (iVDPV) Excretion in an Infant with Severe Combined Immune Deficiency with Spillover to a Parent.

In order to maintain the polio eradication status, it has become evident that the surveillance of cases with acute flaccid paralysis and of environmental samples must be urgently supplemented with the surveillance of poliovirus excretions among individuals with inborn errors of immunity (IEI). All children with IEI were screened for the excretion of poliovirus during a collaborative study conducted by the ICMR-National Institute of Virology, Mumbai Unit, ICMR-National Institute of Immunohaematology, and World Health Organization, India. A seven-month -old male baby who presented with persistent pneumonia and lymphopenia was found to have severe combined immune deficiency (SCID) due to a missense variant in the RAG1 gene. He had received OPV at birth and at 20 weeks. Four stool samples collected at 4 weekly intervals yielded iVDPV type 1. The child's father, an asymptomatic 32-year-old male, was also found to be excreting iVDPV. A haploidentical hematopoietic stem cell transplant was performed, but the child succumbed due to severe myocarditis and pneumonia three weeks later. We report a rare case of transmission of iVDPV from an individual with IEI to a healthy household contact, demonstrating the threat of the spread of iVDPV from persons with IEI and the necessity to develop effective antivirals.

Double tracheoesophageal fistula after prolonged intubation during COVID-19: surgical treatment by colonic transposition in the retrosternal space

This is a patient with 2 tracheoesophageal fistulas following prolonged intubation due to COVID-19 with severe evolution and indication for surgical treatment due to failure of endoscopic treatment. Patient in a long hospital stay, unable to eat an oral diet, malnourished, chronic cough, developing persistent pneumonia due to recurrent salivary bronchoaspiration. The case was treated by complex surgical intervention consisting of proximal and distal partial esophagectomy with reconstruction of food transit by colonic bypass in the anterior mediastinum, resection and tracheal reanastomosis. The final result was good, with the patient being discharged from the hospital on a restored oral diet and free spontaneous breathing. The resolution of an extremely serious case through a complex and exceptional surgical approach, which imposed enormous challenges in pre-operative preparation and detailed therapeutic planning, with single-stage surgical action by two surgical teams (Digestive System Surgery and Thoracic Surgery).

A rare case of Ellis-van Creveld syndrome with primary immunodeficiency with recurrent and persistent pneumonia

A rare case of Ellis-van Creveld syndrome with primary immunodeficiency with recurrent and persistent pneumonia

Cystic fibrosis primarily presenting with pseudo-Bartter syndrome: a report of three cases and literature review

To summarize the clinical characteristics and genetic variations in children with cystic fibrosis (CF) primarily presenting with pseudo-Bartter syndrome (CF-PBS), with the aim to enhance understanding of this disorder. A retrospective analysis was performed on the clinical data of three children who were diagnosed with CF-PBS in Hunan Children's Hospital from January 2018 to August 2023, and a literature review was performed. All three children had the onset of the disease in infancy. Tests after admission showed hyponatremia, hypokalemia, hypochloremia, and metabolic alkalosis, and genetic testing showed the presence of compound heterozygous mutation in the CFTR gene. All three children were diagnosed with CF. Literature review obtained 33 Chinese children with CF-PBS, with an age of onset of 1-36 months and an age of diagnosis of 3-144 months. Among these children, there were 29 children with recurrent respiratory infection or persistent pneumonia (88%), 26 with malnutrition (79%), 23 with developmental retardation (70%), and 18 with pancreatitis or extrapancreatic insufficiency (55%). Genetic testing showed that c.2909G>A was the most common mutation site of the CFTR gene, with a frequency of allelic variation of 23% (15/66). CF may have no typical respiratory symptoms in the early stage. The possibility of CF-PBS should be considered for infants with recurrent hyponatremia, hypokalemia, hypochloremia, and metabolic alkalosis, especially those with malnutrition and developmental retardation. CFTR genetic testing should be performed as soon as possible to help with the diagnosis of CF.

Prevalence of persistent pneumonia among severe pneumonia and nutritional status as its associated risk factor: A prospective observational study among under-five children.

Malnourishment is a risk factor for persistent pneumonia among under-five children with severe pneumonia. This study aims to determine the prevalence of persistent pneumonia and the association between nutritional status and pneumonia severity in children under 5 years of age. A prospective observational hospital-based study was conducted in the Department of Paediatrics, King George's Medical University (KGMU) from May 2019 to April 2020 among children aged 1 month to 5 years admitted with a diagnosis of severe pneumonia. An anthropometric assessment along with general and systemic examination was conducted. Weight for age, height for age and weight for height were calculated to assess the nutritional status. Children with severe pneumonia were followed for 4-6 weeks to assess the prevalence of persistent pneumonia. The prevalence of persistent pneumonia was 6.8%, while 32 (31.1%) and 64 (62.1%) patients had recurrent and severe pneumonia, respectively. No statistically significant distribution was observed in age, sex, residential area, parent's education or occupation of the child. The statistically significant distribution was seen on assessing nutritional status based on weight for age, height for age and weight for height (P value- 0.001, 0.001, 0.0001). Those with weight for age ≤ 3SD were anaemics and up to 1 year of age had 5.21, 3.52 and 2.83 times more odds of having persistent pneumonia, respectively. The prevalence of persistent pneumonia among children less than 5 years of age was 6.8%. Malnutrition can be considered a major determinant of persistent pneumonia among children under 5 years of age.

Underlying Diseases Associated with Persistent Pneumonia in Children Aged 2 Months to 5 Years

Background: Persistent pneumonia in children pose a significant challenge to the pediatricians as there are underlying reasons of persistence. There are limited data on the underlying diseases predisposing to persistence of pneumonia in children. Objective: To identify the underlying diseases of persistent pneumonia in children. Methods: The cross sectional observational study was conducted at Bangladesh Shishu (Children) Hospital & Institute from November, 2019 to October, 2020. Children 2 months to 5 years of age admitted with persistent pneumonia were analyzed to find out the underlying diseases. Results: Among 49 cases of persistent pneumonia, underlying disease could be determined in 41 (83.7%) cases. The diseases were cystic fibrosis 13 (26.5%), congenital heart disease 10 (20.4%), primary immunodeficiency 10 (20.4%), gastro-esophageal reflux disease 5 (10.2%), pulmonary tuberculosis 4 (8.1%) and congenital anomalies of respiratory tract 1 (2%). Conclusion: The most common underlying diseases of persistent pneumonia are cystic fibrosis, congenital heart disease, primary immunodeficiency followed by gastro-esophageal reflux disease, pulmonary tuberculosis and congenital anomalies of respiratory tract. J Bangladesh Coll Phys Surg 2024; 42: 114-119

Clinical characteristics of persistent or recurrent pneumonia combined with airway malacia in children.

The aim of this study is to investigate the clinical characteristics and pathogens involved in persistent or recurrent pneumonia combined with airway malacia in children. We retrospectively reviewed the information of children hospitalised with persistent or recurrent pneumonia, including clinical presentations, laboratory examination results and pathogens. A total of 554 patients were admitted, 285 (51.44%) of whom were found to have airway malacia. There were 78 (27.37%), 166 (58.25%) and 41 (14.39%) patients with mild, moderate and severe malacia, respectively. Patients with airway malacia were younger than those without malacia (6.0 vs. 12.0 months, p < 0.01) and were more likely to present with wheezing (75.07%), fever (34.39%), dyspnoea (28.77%), cyanosis (13.68%) and wheezing in the lungs (78.95%). The incidence of preterm delivery, oxygen therapy, paediatric intensive care unit (PICU) admission and mechanical ventilation was higher, and the hospital stay (11.0 vs. 10.0 days, p= 0.04) was longer in these patients than in those without malacia. Patients with severe airway malacia were more likely to undergo oxygen therapy, PICU admission, mechanical ventilation and have multiple malacia than were those with mild or moderate malacia. Mycoplasma pneumoniae (30.18%) was the most common pathogen. Severe airway malacia likely aggravates conditions combined with pneumonia. The proportion of multisite malacia was greater in severe airway malacia patients.

Single-Cell RNA Sequencing Reveals Alterations in Patient Immune Cells with Pulmonary Long COVID-19 Complications.

Since the emergence of the COVID-19 pandemic, the effects of SARS-CoV-2 have been extensively researched. While much is already known about the acute phase of the infection, increasing attention has turned to the prolonged symptoms experienced by a subset of individuals, commonly referred to as long COVID-19 patients. This study aims to delve deeper into the immune landscape of patients with prolonged symptoms by implementing single-cell mRNA analysis. A 71-year-old COVID-19 patient presenting with persistent viral pneumonia was recruited, and peripheral blood samples were taken at 3 and 2 years post-acute infection onset. Patients and control peripheral blood mononuclear cells (PBMCs) were isolated and single-cell sequenced. Immune cell population identification was carried out using the ScType script. Three months post-COVID-19 patients' PBMCs contained a significantly larger immature neutrophil population compared to 2-year and control samples. However, the neutrophil balance shifted towards a more mature profile after 18 months. In addition, a notable increase in the CD8+ NKT-like cells could be observed in the 3-month patient sample as compared to the later one and control. The subsequent change in these cell populations over time may be an indicator of an ongoing failure to clear the SARS-CoV-2 infection and, thus, lead to chronic COVID-19 complications.

Predicting early complications in patients with spinal gunshot wounds: A multicenter study

IntroductionThere is a wide variation in the clinical presentation of spinal gunshot wounds ranging from isolated minor stable fractures to extremely severe injuries with catastrophic neurological damage. Research questionwe aim to analyze the risk factors for early complications and impact of surgical treatment in patients with spinal gunshot wounds. Material and methodsThis is a multicentre retrospective case-control study to compare patients with spinal gunshot wounds who had early complications with those who did not. The following matching criteria were used: sex (1:1), injury level (1:1) and age (±5 years). Univariate and multivariate analyses were performed using logistic regression. ResultsResults: Among 387 patients, 36.9 % registered early complications, being persistent pain (n = 32; 15 %), sepsis/septic shock (n = 28; 13 %), pneumonia (n = 27; 13 %) and neurogenic bladder (n = 27; 12 %) the most frequently reported. After case-control matched analysis, we obtained 133 patients who suffered early complications (cases) and 133 patients who did not as control group, not differing significantly in sex (p = 1000), age (p = 0,535) and injury level (p = 1000), while the 35 % of complications group required surgical treatment versus 15 % of the non-complication group (p < 0.001). On multivariable analysis, significant predictors of complications were surgical treatment for spinal injury (OR = 3.50, 95 % CI = 1.68–7.30), dirty wound (3.32, 1.50–7.34), GCS ≤8 (3.56, 1.17–10.79), hemodynamic instability (2.29, 1.07–4.88), and multiple bullets (1.97, 1.05–3.67). Discussion and conclusionSpinal gunshot wounds are associated with a high risk of early complications, especially when spinal surgery is required, and among patients with dirty wound, low level of consciousness, hemodynamic instability, and multiple bullets.

A case series of pneumonia beyond usual infections in children

Pneumonia is the most common cause of mortality in under-five children worldwide. Largely, viral pneumonia is the most common cause of pneumonia in children across all age groups. We need to think outside the jukebox while dealing with cases of recurrent or persistent pneumonia. A few uncommon causes of persistent or recurrent pneumonia are primary or secondary immunodeficiencies, airway anomalies, infection with Mycobacterium tuberculosis complex, aspiration pneumonia, and severe gastroesophageal reflux. We present a few uncommon presentations of pneumonia in children, which can pose a significant diagnostic challenge in a resource-limited setting.

FRI226 Ectopic Cushing’s Syndrome Of Unknown Primary Origin With Etomidate Use

Abstract Disclosure: C. Ohammah: None. J. Lloyd: None. T. Abdulwahid: None. R. Tangri: None. C. Musgrove: None. K. Selk: None. Background: Ectopic Cushing's syndrome (ECS) is rare and requires adrenolytic agents to control hypercortisolism until a definitive plan can be made to treat the underlying cause. We present a case of ECS of unknown primary origin causing immunosuppression due to the hypercortisolism that responded with etomidate infusion. Case: A 61-year-old male who presented to the hospital after a few weeks of increasing weakness, dyspnea, and hemoptysis. In the months prior to his admission, he was found to have persistent hypokalemia, COVID pneumonia, and new onset diabetes mellitus. On admission, his examination was remarkable for proximal hip flexor weakness. Labs were significant for metabolic alkalosis, hyperglycemia (A1c 7.7%) and persistent hypokalemia requiring about 300 mEq of potassium daily. CT chest, abdomen and pelvis was remarkable for aspiration pneumonia, vertebral compression fracture, and bilateral adrenal enlargement. Blood cultures grew Staphylococcus Aureus (MSSA) (suspected lung source) and Candida albicans. Treatment with vancomycin and caspofungin was initiated and narrowed to cefazolin after speciation. His MSSA cleared rapidly however, fungemia was persistent after 1.5 weeks of treatment. MRI brain was unremarkable for causative lesion. Further testing revealed elevated morning cortisol (136.2ug/dL) confirmed on repeated testing and elevated ACTH (653pg/mL). Serum metanephrines were normal. A high-dose dexamethasone suppression was unremarkable. In the following days, he developed respiratory failure secondary to a spontaneous hemothorax requiring intubation and ICU admission. He was started on an etomidate infusion given abnormal liver enzymes and unavailability of metyrapone. The infusion was titrated every 6 hours based on cortisol levels. His liver enzymes improved and ketoconazole was added but later discontinued due to development of thrombocytopenia. His cortisol level decreased (21.5ug/dL) and fungemia cleared. Arrangement for bilateral adrenalectomy was made but the patient decompensated and developed shock requiring pressors. After a goals of care discussion, he was transitioned to comfort measures and eventually passed. Conclusion: ECS is rare, and the diagnosis is challenging and often delayed. Ectopic ACTH can result from various malignancies. Medical management with adrenolytic agents should be considered early in the management of ECS until a definitive plan is made. Etomidate, ketoconazole, metyrapone, and mitotane can be used to treat hypercortisolism to achieve medical adrenalectomy. Bilateral adrenalectomy should be considered in patients without adequate response to adrenolytic agents. This case describes the severity of hypercortisolism from an ectopic ACTH production causing refractory hypokalemia and immunosuppression resulting in fatal infections. We highlight the use of etomidate to control hypercortisolism. Presentation: Friday, June 16, 2023

Preoperative CT-Guided Coil Localization of Lung Nodule Resection: A Single-Center Experience.

The increased use of computed tomography (CT) for lung cancer screening has led to an increase in the incidence of lung nodules. However, accurately localizing small or deep-seated nodules remains challenging and often requires image-guided techniques. CT-guided coil localization has emerged as a popular method for precise localization. A retrospective analysis was conducted on a cohort of patients who underwent CT-guided coil localization followed by surgical resection of lung nodules at the National University Hospital, Singapore, between 2015 and 2021. The study examined the rates of successful localization, procedural complications, and postoperative length of stay. Descriptive statistics were employed for data analysis. This retrospective study included 55 patients with pulmonary nodules, of whom 76.4% had a history of previous malignancy. A total of 58 nodules were successfully localized using coil placement and distributed across various lung lobes. The average dimensions of the nodules were 8.4 ± 3.2 mm × 10.1 ± 4.0 mm, with an average distance of 10.9 ± 9.0 mm from the pleura. Surgical resection of the coiled nodules resulted in an average resected volume of 91.1 ± 76.0 cm3 and a resection margin of 9.5 ± 7.3 mm. Failed localization occurred in only 3.6% of cases. Procedural complications were observed in 21.8% of patients, including hemothorax, persistent air leaks, pneumothoraces, pleural effusion, pneumonia, and atelectasis, all of which were appropriately managed. The average length of postoperative hospital stay was 6.7 ± 15.9 days. Preoperative CT-guided coil localization is a reliable and safe technique for accurately localizing lung nodules before surgical resection. The high success rate of this approach enables precise intraoperative planning. Despite procedural complications, their manageable nature and the absence of major adverse events highlight the safety of this technique. Incorporating CT-guided coil localization into routine clinical practice can significantly enhance surgical planning, improve patient outcomes, and optimize resource utilization.

Intracarinal Foreign Body: An Unusual Location in a 13-Month-Old Child, About a Case Report and Literature Review

Inhalation of the foreign body is a frequent cause of morbidity and mortality in the pediatric population, particularly between six months and three years. Carinary localization remains very rare and less frequently diagnosed on bronchoscopy. Clinical symptoms differ depending on the seat and degree of the obstruction, ranging from inspiratory dyspnea with cyanosis to persistent or recurrent pneumonia. Imaging, in particular the thoracic scanner, plays an essential role in the positive and topographical diagnosis and bronchoscopy remains the reference examination for therapeutic purposes. We report the case of a 13-month-old infant, admitted to the pediatric emergency department with laryngitis and cough that had been evolving for 6 days, the thoracic CT scan showed a plastic foreign body located in the carina, with discussion of the primordial role of the CT scan in its detection.

Recent insights into the role of antifibrotic drugs in the management of idiopathic pulmonary fibrosis (IPF)

Idiopathic aspiratory fibrosis (IPF) is the most well-known sort of idiopathic interstitial pneumonia (IIP). IIPs are precipitously shappening (idiopathic) diffuse parenchymal lung illnesses. IPF is characterized as a precipitouly happening (idiopathic) explicit type of persistent fibrosing interstitial pneumonia restricted to the lung and related with an example of Usual Interstitial Pneumonia (UIP) on imaging or histology. Pleasant rules for the analysis of Interstitial Lung Disease (ILD), preceding thought for against fibrotic treatment, specify that the conclusion of ILD has been made by a multidisciplinary group (MDT).

VATS in complicated COVID-19 patients: case series.

Common complications of coronavirus disease 2019 (COVID-19) related ARDS and ventilation are barotrauma-induced pneumothorax, pneumatocele and/or empyema. We analysed indications and results of video-assisted thoracoscopic surgery (VATS) in complicated COVID-19 patients. This is a retrospective single-institution study analysing a case series of patients treated by VATS for secondary spontaneous pneumothorax (SSP), pneumatocele and empyema complicating COVID-19, not responding to drainage in Lodi Maggiore Hospital between February 2020 and May 2021. Out of 2076 patients hospitalized in Lodi Maggiore Hospital with COVID-19, nine Males (0,43%; mean age 58,1-33-81) were treated by VATS for complications of pneumonia (6 SSP and 3 empyema; 1 case complicated by haemothorax). 7 patients (77%) had CPAP before surgery for 21.3days mean (4-38). Mean Operative time was 80.9min (38-154). Conversion rate was 0%. 3 (33%) patients were admitted to ICU before VATS. Treatments were: bullectomy in six patients (66%), drainage of the pleural space in all patients, pleural decortication and fluid aspiration in five cases (55%). two patients (22%) needed surgery interruption and bilateral ventilation to restore adequate oxygenation. Mortality was 1/9 (11%) due to respiratory failure for persistent pneumonia. In one patient (11%) redo surgery was performed for bleeding. Mean postop Length of Stay (LOS) was 37.9days (10-77). Our report shows that VATS can be considered an extreme, but effective treatment for COVID-19 patients with SSP, pneumatocele or empyema, for patients who can tolerate general anaesthesia. Attention must be paid to the aerosol-generation of infected droplets.

The clinical application of flexible bronchoscopy in a neonatal intensive care unit.

ObjectiveFlexible bronchoscopy is widely used in infants and it plays a crucial role. The aim of this study was to investigate the value and clinical safety of flexible bronchoscopy in a neonatal intensive care unit.MethodsA retrospective analysis was performed on the clinical data of 116 neonates who underwent flexible bronchoscopy and the outcomes of 147 procedures. A correlation analysis was performed on the relationship between flexible bronchoscopy findings, microscopic indications, and clinical disease.ResultsThe 147 procedures performed were due to the following reasons: problems related to artificial airways, 58 cases (39.45%); upper respiratory problems, 60 cases (40.81%) (recurrent dyspnea, 23 cases; upper airway obstruction, 17 cases; recurrent stridor, 14 cases; and hoarseness, six cases), lower respiratory problems, 51 cases (34.69%) (persistent pneumonia, 21 cases; suspicious airway anatomical disease, 21 cases; recurrent atelectasis, eight cases; and pneumorrhagia, one case), feeding difficulty three cases (2.04%). The 147 endoscopic examinations were performed for the following reasons: pathological changes, 141 cases (95.92%); laryngomalacia, 78 cases (53.06%); mucosal inflammation/secretions, 64 cases (43.54%); vocal cord paralysis, 29 cases (19.72%); trachea/bronchus stenosis, 17 cases (11.56%) [five cases of congenital annular constriction of the trachea, seven cases of left main tracheal stenosis, one case of the right middle bronchial stenosis, two cases of tracheal compression, and two cases of congenital tracheal stenosis]; subglottic lesions, 15 cases (10.20%) [eight cases of subglottic granulation tissue, six cases of subglottic stenosis, one cases of subglottic hemangioma]; tracheomalacia, 14 cases (9.52%); laryngeal edema, five cases (3.40%); tracheoesophageal fistula, four cases (2.72%); rhinostenosis, three cases (2.04%); tracheal bronchus, three cases (2.04%); glossoptosis, two cases (1.36%); laryngeal cyst, two cases (1.36%); laryngeal cleft, two cases (1.36%); tongue base cysts, one case (0.68%); and pneumorrhagia, one case (0.68%). Complications were rare and mild.ConclusionFlexible bronchoscopy is safe and effective for diagnosing and differentiating neonatal respiratory disorders in neonatal intensive care units.

TUMOR NECROSIS FACTOR (TNF) ALPHA INHIBITORS, ASPERGILLOSIS, AND GALACTOMANNAN: THE PERILS OF BEING MISLED BY AN INSENSITIVE TEST

TUMOR NECROSIS FACTOR (TNF) ALPHA INHIBITORS, ASPERGILLOSIS, AND GALACTOMANNAN: THE PERILS OF BEING MISLED BY AN INSENSITIVE TEST

Safety of De-Escalating Empiric Antimicrobial Agents in Trauma Patients with Indigenous Oral Flora Ventilator-Associated Pneumonia.

Background: Ventilator-associated pneumonia (VAP) is a frequently occurring nosocomial infection in critically ill trauma patients. When bronchoalveolar lavage (BAL) returns with indigenous oral flora (IOF), de-escalating antimicrobial therapy is challenging. Patients and Methods: This is a retrospective review of trauma patients who received broad-spectrum empiric antimicrobial therapy for clinical VAP, and whose BAL culture resulted with >100,000 CFU/mL of IOF from September 1, 2017 to September 1, 2020. Patients were identified using the trauma database and microbiology reports of BALs with IOF. This review evaluated the effect of antibiotic de-escalation on recurrent or persistent pneumonia. Results: Of 51 trauma patients with clinical VAP and IOF, 18 patients (35.3%) had antimicrobial agents de-escalated. De-escalation was driven primarily by the discontinuation of vancomycin, with the continuation of a β-lactam antibiotic as monotherapy for the remainder of the treatment course (n = 15; 86.7%). The overall rate of either persistent or recurrent VAP in the cohort was 10%, and this did not differ statistically between those who received de-escalation therapy after isolation of IOF and those who did not (16.7% vs. 6.1%; p = 0.224), however, the incidence of acute kidney injury (AKI) was higher in the non-de-escalation group (39.4% vs. 11.1%; p = 0.034). There was no statistical difference in ventilator days, intensive care unit (ICU) length of stay, or hospital length of stay between treatment groups. Conclusions: Trauma patients who develop VAP with isolated BAL cultures of IOF or mixed flora can safely have anti-methicilllin-resistant Staphylococcus aureus (MRSA) antimicrobial agents discontinued, and this may result in decreased rates of AKI.

Risk Factors of Pneumonia in Primary Antibody Deficiency Patients Receiving Immunoglobulin Therapy: Data from the US Immunodeficiency Network (USIDNET).

Despite immunoglobulin replacement (IgRT) therapy, some patients with primary antibody deficiency (PAD) continue to develop respiratory infections. Recurrent and severe respiratory infections, particularly pneumonia, can lead to significant morbidity and mortality. Therefore, we sought to determine the risk factors of developing pneumonia in PAD patients, already receiving IgRT. We evaluated clinical and laboratory features of PAD patients enrolled in the US Immune Deficiency Network (USIDNET) registry by April 2017. Patients were included if they met the following criteria: (1) PAD diagnosis (common variable immunodeficiency (CVID), agammaglobulinemia, hypogammaglobinemia, and specific antibody deficiency (SAD) and (2) available data on infections before and after IgRT. Patients were excluded if they were not receiving IgRT, or if no pre/post infections data were available. Descriptive and multivariable logistic regression analyses were used to identify factors associated with pneumonia post-IgRT. A total of 1232 patients met the inclusion criteria. Following IgRT, 218 patients (17.7%) were reported to have at least one pneumonia episode. Using multivariate logistic regression analysis, we found a statistically significant increased risk of pneumonia in patients with asthma (OR: 2.55, 95% CI (1.69-3.85), p < 0.001) bronchiectasis (OR: 3.94, 95% CI (2.29-6.80), p < 0.001), interstitial lung disease (ILD) (OR: 3.28, 95%CI (1.43-7.56), p < 0.005), splenomegaly (OR: 2.02, 95%CI (1.08-3.76), p < 0.027), allergies (OR: 2.44, 95% CI [1.44-4.13], p = 0.001), and patients who were not on immunosuppressives (OR: 1.61; 95%CI [1.06-2.46]; p = 0.027). For every 50 unit increase in IgA, the odds of reporting pneumonia post IgRT decreased (OR: 0.86, 95% CI [0.73-1.02], p = 0.062). Infectious organisms were reported in 35 of 218 patients who reported pneumonia after IgRT. Haemophilus influenzae was the most frequently reported (n = 11, 31.43%), followed by Streptococcus pneumoniae (n = 7, 20.00%). Our findings suggest PAD patients with chronic and structural lung disease, splenomegaly, and allergies were associated with persistent pneumonia. However, our study is limited by the cross-sectional nature of the USIDNET database and limited longitudinal data. Further studies are warranted to identify susceptible causes and explore targeted solutions for prevention and associated morbidity and mortality. Patients with primary antibody deficiency with structural lung disease, allergies, and splenomegaly are associated with persistent pneumonia post-IgRT.

65-Year-Old Man With Weight Loss and Dyspnea on Exertion

65-Year-Old Man With Weight Loss and Dyspnea on Exertion