Medical Specialties Commons^™

Sexual Risk-Taking Behavior Amongst Emerging Adults In A Tertiary Institution Of Learning In Coastal Kenya: A Qualitative Study Of Stakeholders’ Perspectives Using Causal Loop Mapping, Stevenson K. Chea, Vincent A. Kagonya, Eunice A. Oyugi, Carophine Nasambu, Isaac Menza, Fauz Ibrahim, Osman Abdullahi, Alice Anika, Amin S. Hassan, Amina Abubakar

Institute for Human Development, East Africa

Background It is known from previous studies that university students in sub-Saharan Africa (sSA) engage in sexual risk-taking behaviour (SRTB). However, there is paucity of data on factors contributing to SRTB among university students (emerging adults) at the Kenyan Coast thus hindering intervention planning. This study seeks to provide an in-depth qualitative understanding of the factors contributing to SRTB and their interconnectedness among university students at the Kenyan Coast combining qualitative research with a systems thinking approach.

Methods Using the ecological model, and employing in-depth interviews, we explored the perceptions of twenty-six key informants (twenty-one emerging adults and five other …

Reducing The Rate Of Central Line-Associated Bloodstream Infections; A Quality Improvement Project, David Odada, Hellen Munyi, Japhet Gatuiku, Ruth Thuku, Jared Nyandigisi, Anne Wangui, Emilie Ashihundu, Beatrice Nyakiringa, Jemimah Kimeu, Martin Musumbi, Rodney Adam

Internal Medicine, East Africa

Background The burden of central line-associated bloodstream infections is significant and has negative implications for healthcare, increasing morbidity and mortality risks, increasing inpatient hospital stays, and increasing the cost of hospitalization. Efforts to reduce the incidence of central line-associated bloodstream infections have utilized quality improvement projects that implement, measure, and monitor outcomes. However, variations in location, healthcare organization, patient risks, and practice gaps are key to the success of interventions and approaches. This study aims to evaluate interventions of a quality improvement project on the reduction of central line-associated bloodstream infection rates at a university teaching hospital.

Methods This was …

Predictors Of Coronary Artery Disease In Heart Failure With Reduced Ejection Fraction At The Aga Khan University Hospital In Nairobi, Redemptar Kimeu, Jeilan Mohamed, Mzee Ngunga

Internal Medicine, East Africa

There appears to be an epidemiological transition in the etiology of heart failure in sub-Saharan Africa (SSA) in parallel with a steady increase in risk factors for coronary artery disease (CAD). SSA has limited access to heart failure and CAD diagnostics, limiting the number of patients who receive optimal care. Our objectives were to study the predictors of coronary artery disease among patients with heart failure with reduced ejection fraction (HFrEF) and develop a model to assist clinicians in determining the likelihood of CAD before cardiac catheterization.

Methodology: This was a retrospective study at the Aga Khan University Hospital, …

Normative Spatiotemporal Fetal Brain Maturation With Satisfactory Development At 2 Years, Ana I. L. Namburete, Bartłomiej W. Papież, Michelle Fernandes, Madeleine K. Wyburd, Linde S. Hesse, Felipe A. Moser, Leila Cheikh Ismail, Robert B. Gunier, Waney Squier, Maria Carvalho

Obstetrics and Gynaecology, East Africa

Maturation of the human fetal brain should follow precisely scheduled structural growth and folding of the cerebral cortex for optimal postnatal function1 . We present a normative digital atlas of fetal brain maturation based on a prospective international cohort of healthy pregnant women2 , selected using World Health Organization recommendations for growth standards3 . Their fetuses were accurately dated in the first trimester, with satisfactory growth and neurodevelopment from early pregnancy to 2 years of age4,5 . The atlas was produced using 1,059 optimal quality, three dimensional ultrasound brain volumes from 899 of the fetuses and an automated analysis pipeline6–8 …

P16 Expression And Recurrent Cervical Intraepithelial Neoplasia After Cryotherapy Among Women Living With Hiv, Daniel Maina, Michael H. Chung, Marleen Temmerman, Zahir Moloo, Jonathan Wawire, Sharon A. Greene, Elizabeth Unger, Shahin Sayed, Samah Sakr, Nelly Mugo

Pathology, East Africa

Background: The expression of p16 protein, a surrogate marker for high-risk human papillomavirus (hrHPV), is associated with cervical dysplasia. We evaluated correlates of p16 expression at treatment for high-grade cervical lesions and its utility in predicting the recurrence of cervical intraepithelial lesions grade 2 or higher (CIN2+) following cryotherapy among women with HIV.

Methods: This is a subgroup analysis of women with HIV in Kenya with baseline cervical biopsy-confirmed CIN2+ who were randomized to receive cryotherapy and followed every six-months for two-years for biopsy-confirmed recurrence of CIN2+. P16 immunohistochemistry was performed on the baseline cervical biopsy with a positive result …

Unveiling The Potential Application Of Intraoperative Brain Smear For Brain Tumor Diagnosis In Low-Middle-Income Countries: A Comprehensive Systematic Review, Muhammad Shakir, Ahmed Altaf, Hawra Hussain, Syed Muhammad Aqeel Abidi, Zoey Petitt, Mahnoor Tariq, Ahmed Gilani, Syed Ather Enam

Section of Neurosurgery

Background: Immediate intraoperative histopathological examination of tumor tissue is indispensable for a neurosurgeon to track surgical resection. A brain smear is a simple, rapid, and cost-effective technique, particularly important in the diagnosis of brain tumors. The study aims to determine the effectiveness of intraoperative brain smear in the diagnosis of brain tumors in low- and middle-income countries (LMICs), while also evaluating its sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and overall accuracy.
Methods: A comprehensive search of the literature was conducted using PubMed, Scopus, and Google Scholar. The retrieved articles were independently screened by two reviewers. The …

Psychiatric Comorbidity In People With Epilepsy, Bushra Khalid, Zaid Waqar, Zakir Jan, Soban Khan, Amina Saddiqa, Anum Irfan, Waleed Malik, Samer Naik, Naheed Afzal, Hira Abbasi

Pakistan Journal of Neurological Sciences (PJNS)

Background and Objective: People with epilepsy often experience psychiatric comorbidity. This study aims to investigate the relationship among seizure regulation, psychiatric comorbidity, and antiepileptic drug use in a group of individuals with epilepsy in Pakistan.

Methods: This is an observational study conducted at Pakistan Institute of Medical Sciences, over a period of six months (1st June – 31st Dec 2022). One-hundred-twenty people (sample size) with epilepsy above the age of 18 with confirmed diagnosis of epilepsy were included in the study who completed a questionnaire that assessed their seizure control, psychiatric comorbidity, and antiepileptic drug use. Data was analyzed using …

Factors Associated With Dropout From Outpatient Tertiary Mental Health Services, Nasir Mahmood, Uroosa Talib

Pakistan Journal of Neurological Sciences (PJNS)

Background and objective: There is a paucity of mental health hospital-based studies from Pakistan that have observed the contributing factors of dropout. This study aims to understand contributing factors to dropouts from mental health services.

Method: This telephonic survey was conducted as a cross-sectional study from dropout outpatients of Karwan-e-Hayat Institute for Mental Health Care, a tertiary mental care hospital in Karachi, Pakistan. Using a simple questionnaire to assess socio-demographic variables, psychosocial assessment, and patient perspectives on treatment termination. A total of 158 participants out of 200 patients provided insight into their dropout experiences.

Result: Results revealed that younger adults, …

Neuro-Palliative Medicine, Shazia Faiz

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

Cyclic Alternating Pattern Of Encephalopathy (Cape) In Cns Infection: A Case Report, Zaid Waqar, Soban Khan, Maryam Khalil, Bushra Khalid, Zakir Jan, Muhammad Adil, Amina Saddiqa

Pakistan Journal of Neurological Sciences (PJNS)

Cyclic Alternating Pattern of Encephalopathy (CAPE) is rare EEG phenomenon first described in 1944 in a comatose patient. It is similar to sleep EEG pattern of cyclic alternating pattern (CAP) which is a periodic electroencephalogram activity of non-REM sleep. The cyclic alternating pattern (CAP) is defined by sequences of transient electrocortical events that are different from the tonic background and repeat at intervals of up to one minute. CAPE, however, is abnormal EEG pattern. In this pattern of EEG abnormality slow wave activity of 1-2Hz alternates with fast activity of 6-10 hertz. Here we present a case of patient with …

Anti-Caspr 2 Antibody Encephalitis: A Case Report, Maryam Khalil, Zaid Waqar, Hira Badar Abbasi, Amina Saddiqa, Bushra Khalid, Soban Khan

Pakistan Journal of Neurological Sciences (PJNS)

Encephalitis is a term denoted to Inflammation in the brain which can be due to infection, autoimmunity, or can be a part of a paraneoplastic phenomenon with malignancy. Anti-CASPR 2 antibody encephalitis is a rare form of encephalitis that can be associated with malignancy, paraneoplastic phenomenon or can be an autoimmune disease. We present a case of a young boy who presented with new onset seizures and altered sensorium and was diagnosed with anti-CASPR 2 antibody encephalitis. Anti-CASPR 2 Antibody Encephalitis is a rare form of encephalitis which due to its great diverse presentation should be kept in the differential …

Xanthine Oxidase Levels And Immune Dysregulation Are Independently Associated With Anemia In Plasmodium Falciparum Malaria, Marilyn Vasquez, Margaux Sica, Ruth Namazzi, Robert Opoka, Julian Sherman, Dibyadyuti Datta, Miquel Duran Frigola, John Ssenkusu, Chandy John, Andrea Conroy

Paediatrics and Child Health, East Africa

Severe anemia is an important contributor to mortality in children with severe malaria. Anemia in malaria is a multi-factorial complication, since dyserythropoiesis, hemolysis and phagocytic clearance of uninfected red blood cells (RBCs) can contribute to this syndrome. High levels of oxidative stress and immune dysregulation have been proposed to contribute to severe malarial anemia, facilitating the clearance of uninfected RBCs. In a cohort of 552 Ugandan children with severe malaria, we measured the levels of xanthine oxidase (XO), an oxidative enzyme that is elevated in the plasma of malaria patients. The levels of XO in children with severe anemia were …

Renin As A Biomarker Of Acute Kidney Injury And Mortality In Children With Severe Malaria Or Sickle Cell Disease, Daniel Adan, Anthony Batte, Ruth Namazzi, Ivan Mufumba, Caroline Kazinga, Kagan Mellencamp, Caitlin Bond, Robert Opoka, Chandy John, Andrea Conroy

Paediatrics and Child Health, East Africa

Background: Globally, a very high percentage of acute kidney injury (AKI) occurs in low- and middle-income countries (LMICs) where late recognition contributes to increased mortality. There are challenges with using existing biomarkers of AKI in LMICs. Emerging evidence suggests renin may serve as a biomarker of kidney injury that can overcome limitations in creatinine-based diagnostics.

Methods: Two study populations in Uganda were assessed. Cohort #1 was a two-site, prospective cohort study enrolling 600 children with severe malaria (SM). Cohort #2 was a prospective cohort study enrolling 185 children with sickle cell disease (SCD) hospitalized with a vaso-occlusive crisis. Plasma or …

Outpatient Management Of Urinary Tract Infections By Medical Officers In Nairobi, Kenya: Lack Of Benefit From Audit And Feedback On Adherence To Treatment Guidelines, Florence Mbatia, James Orwa, Mary B. Adam, Gulnaz Mohamoud, Rodney Adam

Family Medicine, East Africa

Introduction: Acute uncomplicated urinary tract infections are common in outpatient settings but are not treated optimally. Few studies of the outpatient use of antibiotics for specifc diagnoses have been done in sub-Saharan Africa, so little is known about the prescribing patterns of medical ofcers in the region.

Methods: Aga Khan University has 16 outpatient clinics throughout the Nairobi metro area with a medical ofcer specifcally assigned to that clinic. A baseline assessment of evaluation and treatment of suspected UTI was performed from medical records in these clinics. Then the medical ofcer from each of the 16 clinics was recruited from …

Stop-Bang Questionnaire For Screening Obstructive Sleep Apnea Syndrome Among Hypertensive Patients In Kenya, Salim Abdallah, Jasmit Shah, Jumaa Bwika, Sayed Karar

Internal Medicine, East Africa

Introduction: Obstructive sleep apnea (OSA) is a type of breathing problem during sleep caused by the blockage of the upper airway, which can cause cessation of airflow. There is limited research on the prevalence of OSA in hypertensive patients in sub-Saharan Africa (SSA). The study aimed to describe the prevalence and clinical characteristics of OSA among hypertensive patients at a tertiary hospital in Nairobi, Kenya.

Methods: This cross-sectional study was conducted at the Aga Khan University Hospital in Nairobi, Kenya. Two hundred and fifty-one hypertensive patients were screened for OSA risk using the STOP-Bang questionnaire (SBQ). Patients with a SBQ …

Gall Bladder Schistosomiasis Diagnosed Incidentally Post Laparoscopic Cholecystectomy: A Case Report, Willbroad Kyejo, Sajida Panjwani, Ally Zain Ismail, Blessing Mathew, Caroline Ngimba, Ally Mwanga

Internal Medicine, East Africa

Introduction and importance: Schistosomiasis is a neglected tropical disease caused by parasitic worms of the genus Schistosoma. It primarily affects the intestines, liver, and urinary tract however, rare cases have been reported where the parasite invades other organs. This case report presents an incidental finding of schistosomiasis, upon histopathology evaluation, in a patient who underwent laparoscopic cholecystectomy for symptomatic gallstone disease with recurrent attacks of cholecystitis.

Case presentation: We present the case of a 42-year-old female patient who presented to the emergency department with symptoms and signs suggestive of acute cholecystitis. She underwent conservative management with interval laparoscopic cholecystectomy …

Treatment Of Seizures In The Neonate: Guidelines And Consensus-Based Recommendations—Special Report From The Ilae Task Force On Neonatal Seizures, Ronit Pressler, Nicholas Abend, Stéphan Auvin, Geraldine Boylan, Francesco Brigo, Maria Roberta Cilio, Linda De Vries, Maurizio Elia, Pauline Samia

Paediatrics and Child Health, East Africa

Seizures are common in neonates, but there is substantial management variability. The Neonatal Task Force of the International League Against Epilepsy (ILAE) developed evidence-based recommendations about antiseizure medication (ASM) management in neonates in accordance with ILAE standards. Six priority questions were formulated, a systematic literature review and meta-analysis were performed, and results were reported following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) 2020 standards. Bias was evaluated using the Cochrane tool and risk of Bias in non-randomised studies - of interventions (ROBINS-I), and quality of evidence was evaluated using grading of recommendations, assessment, development and evaluation (GRADE). …

Prevalence Of Stress Among The Healthcare Providers In A Tertiary Care Hospital In Karachi, Saba Zaidi, Syeda Areeba Tabassum

Pakistan Journal of Neurological Sciences (PJNS)

Background and Objective: Healthcare workers are considered high risk for stress. This study aimed to study the prevalence of stress among the health care providers in a tertiary care hospital in Karachi.

Methods: A cross-sectional study was conducted at Liaquat National Hospital from July to December 2021. All healthcare workers in the vicinity of the hospital including doctors, nurses, allied health specialists, and other healthcare professionals who provide hands-on patient care were included in the study. Data was collected through a pre-designed questionnaire GHQ-12; related to stress symptoms and their impact on daily routine activities. It was in a Google …

A Comprehensive Electroencephalogram Audit In A Tertiary Care Center In Pakistan: Demographic Distribution, Referral Indications And Findings, Hina Imtiaz, Ayisha Farooq Khan, Dureshahwar Kanwar, Naima Javed, Sara Khan

Pakistan Journal of Neurological Sciences (PJNS)

Background and Objective: Electroencephalography (EEG) is a widely employed non-invasive technique for recording brain electrical activity, pivotal for diagnosing various neurological conditions. The study aims to provide insight into demographic distribution, referral indications, and EEG findings in a tertiary care hospital in Pakistan.

Methods: A retrospective cross-sectional analysis was conducted involving 2,924 patients who underwent routine EEG evaluations over a three-year period. Data was collected from the EEG records after approval from the ethical review committee. Demographic variables, referral reasons, and EEG findings were recorded and analyzed using descriptive statistics.

Results: The study revealed a gender distribution of 41.35 % …

Factors Influencing The Headaches And Their Impact On Daily Life Of Medical Students, Saba Zaidi, Ayesha Abdul Samad

Pakistan Journal of Neurological Sciences (PJNS)

Background and Objective:

Medical students are considered high risk for headaches due to various triggers in their daily routine. The objective of this study was to assess the factors influencing headaches and their impact on the daily life of medical students.

Methods: This cross-sectional study utilized a sample of 242 participants who were selected through a convenient method of sampling. Data was collected from medical students of Liaquat National Medical College for a period of six months (January to June 2021). Data was gathered using pre-designed questionnaires that assessed demographic information, lifestyle factors (such as consumption of tea, coffee, and …

Primary Angiitis Of The Central Nervous System Presenting As Sudden Vision Loss In A Young Patient, Ayisha Farooq Khan, Lubna Jafri, Saad Shafqat

Pakistan Journal of Neurological Sciences (PJNS)

Primary angiitis of the central nervous system is a rare disorder that primarily affects the cerebral vessels and can prove to be a diagnostic challenge to the clinicians. It can present with a variety of clinical manifestations and lacks the evidence of any systemic disease. Digital subtraction angiography is often necessary to confirm the diagnosis of cerebral vasculitis but in cases where it may fail to do so, brain biopsy is eventually required. Obliviousness to this condition may lead to false management strategies and hence it is imperative to make an accurate diagnosis to facilitate proper treatment that mainly includes …

Leep More Effective Than Cryotherapy As Effective Treatment For Cin Lesions In Women Living With Hiv And Without Hiv In Western Kenya (2129), Naaman Mehta, Elkanah Omenge, Ann Mwangi, Victor Omodi, Tao Liu, Edwin Sang, Philip Tonui, Peter Itsura, Patrick J. Loehrer, Susan Cu-Uvin

Obstetrics and Gynaecology, East Africa

Objectives: Cervical intraepithelial neoplasia (CIN) in women with HIV (WHIV) is over twice as likely to progress in severity than in women without HIV. This study assessed the results of cryotherapy or LEEP for CIN among WHIV compared to women without HIV in Western Kenya.

Methods: A total of 120 WHIV (60 cryotherapies, 60 LEEP) and 120 women without HIV (60 cryotherapies and 60 LEEP) were intended to be enrolled after a positive visual inspection with acetic acid (VIA). However, only 86 WHIV (39 cryotherapies, 47 LEEP) and 89 women without HIV (46 cryotherapies, 43 LEEP) who had follow-ups within …

An Electronic Health Record System Implementation In A Resource Limited Country—Lessons Learned, Sayed Karar, Muhammad Haroon Khan, Jasmit Shah, Nadeem Ahmed

Internal Medicine, East Africa

Electronic health records have revolutionized the medical world by improving medical care, refining provider documentation, standardizing care, and minimizing sentinel events. Successful implementation of electronic health records remains a daunting task and requires careful strategic planning and buy-in from key stakeholders. Much has been published in resource-rich settings and high-income countries about implementations of electronic health records. However, little is known about the experience in resource-limited settings where challenges remain unique and distinct from other parts of the world. Our intention is to share lessons learned during implementation of a web-based electronic health record at a tertiary care center in …

Inferior Vena Cava Collapsibility Index Versus Passive Leg Raise To Assess Fluid Responsiveness In Non-Intubated Septic Patients A Prospective Observational Study, Anne Githaiga, Wangari Siika, Jeilan Mohamed, Vitalis Mung’Ayi, Idris Chikophe

Anaesthesiology, East Africa

Background: Rapid fluid loading at diagnosis of sepsis is part of standard treatment. Predictive tools of fluid responsiveness are required to guide fluid resuscitation. The Passive Leg Raise [PLR] manoeuvre can predict fluid responsiveness in non-intubated patients with sepsis. The Inferior Vena Cava Collapsibility Index [IVCCI] can also be utilised but is not routinely performed.

Aim: To investigate the correlation between Inferior Vena Cava Collapsibility Index [IVCCI] and a Passive Leg Raise [PLR] manoeuvre for the assessment of fluid responsiveness in non-intubated septic patients in a tertiary referral hospital in Sub-Saharan Africa.

Methodology: A prospective observational study which recruited non-intubated …

Ataxic Variant Of Guillain Barre Syndrome: A Case Report, Haris Majid Rajput, Malik Muhammad Adil, Maryam Khalil, Nayab Aslam, Zaid Waqar

Pakistan Journal of Neurological Sciences (PJNS)

A 17-year-old girl was admitted after acute onset of unsteady gait succeeding acute gastroenteritis. Neurological examination reported normal power in all four limbs, impaired finger-nose, heel-shin tests, areflexia and ataxic gait. We eliminated other diseases with cerebellar symptoms; for example, Wernicke encephalopathy, multiple sclerosis, cerebellar vascular disease , encephalitis in the brain stem and cerebellum. Blood serum collected from the patient during the acute phase showed no anti-ganglioside antibodies. As the patient presented with evident cerebellar ataxia without muscle weakness, ophthalmoplegia or proprioceptive sensory disruption a diagnosis of ataxic form of Guillain-Barré syndrome (GBS) after nerve conduction studies. Though ataxic …

Kenyan Palliative Care Providers’ And Leaders’ Perceptions Of Palliative Care Research Needs And Support To Facilitate Rigorous Research, K. Cartmell, E. Doherty, Nancy Gikaara, Z. Ali, S. Qanungo, E. S. Melikam, R. A. Powell

Internal Medicine, East Africa

Background: Palliative care (PC) can reduce symptom distress and improve quality of life for patients and their families experiencing life-threatening illness. While the need for PC in Kenya is high, PC service delivery and research is limited. Qualitative research is needed to explore potential areas for PC research and support needed to enable that research. This insight is critical for informing a national PC research agenda and mobilizing limited resources for conducting rigorous PC research in Kenya.

Objectives: To explore perceptions of priority areas for PC research and support needed to facilitate rigorous research from the perspective of Kenyan PC …

Screening Utility And Acceptability Of The Kiswahili-Pgals (Paediatric Gait, Arms, Legs, Spine) At A Tertiary Referral Hospital In Kenya-A Diagnostic Accuracy Study, Jacqueline Kawishe, Anthony Ngugi, Stanley Luchters, Helen Foster, Angela Migowa

Paediatrics and Child Health, East Africa

Background:Paediatric rheumatic diseases cause considerable disease burden to children and their families (Moorthy LN, Peterson MGE, Hassett AL, et al, Pediatric Rheumatology 8:20, 2010). Delayed diagnosis is a signifcant determinant of severity and mortality attributed to these conditions (Foster HE, Eltringham MS, Kay LJ, et al, Arthritis Care Res 57(6):921-7, 2007). pGALS is a simple clinical tool used to assess joints and identify musculoskeletal (MSK) conditions in school-going children to enable early referral to paediatric rheumatologists.

Objectives: This study aimed to translate and determine the diagnostic accuracy and acceptability of a Kiswahili version of the pGALS screening tool among …

The Incidence And Modifiable Risk Factors For Necrotizing Enterocolitis Inpreterm Infants A Retrospective Cohort Study, Kelvin Gitau, Roseline Ochieng, Mary Limbe, Caroline Kathomi, James Orwa

Paediatrics and Child Health, East Africa

Objectives: To evaluate the incidence and modifiable risk factors for Necrotizing enterocolitis (NEC) in preterm infants born at ≤32 weeks of gestation weighing <1500 grams, at a private tertiary care hospital in Kenya.

Materials and methods: This retrospective cohort study was conducted at the Aga Khan University Hospital Neonatal Intensive Care Unit (NICU). Preterm infants born at ≤ 32 weeks’ gestation and weighing <1500 grams admitted to NICU between 2009 and 2019, were recruited into the study. The primary outcome was NEC Bell Stage IIa-IIIb based on Modified Bell’s criteria. Maternal and neonatal characteristics were evaluated. The association between variables of interest and NEC was determined using logistic regression analysis and the incidence of NEC for the study period was calculated.

Results: A total of 261 charts of infants born at ≤ 32 weeks’ gestation, weighing <1500 were reviewed, and 200 charts met the inclusion criteria. Fifteen preterm infants developed the primary outcome of interest: NEC Stage ≥2a within the first 30 days of admission. The overall incidence of NEC for the study period was 7.5%. Three risk factors were identified as significantly associated with NEC on multivariate logistic regression analysis: antenatal exposure to steroids (OR = 0.056 CI = 0.003-0.964 p = 0.047), cumulative duration of exposure to invasive mechanical ventilation (OR = 2.172 CI = 1.242-3.799 p = 0.007) and cumulative duration of exposure to umbilical vein catheter (OR = 1.344 CI = 1.08-1.672 p = 0.008).

Conclusions: The overall incidence for the study period of NEC Stage ≥ II a was 7.5%. Exposure to antenatal steroids, duration of mechanical ventilation, and duration of umbilical vein catheterization were …

Pitfalls In Machine Learning-Based Assessment Of Tumor-Infiltrating Lymphocytes In Breast Cancer: A Report Of The International Immuno-Oncology Biomarker Working Group On Breast Cancer, Jeppe Thagaard, Glenn Broeckx, Chowdhury Arif Jahangir, Sara Verbandt, Rajarsi Gupta, Reena Khiroya, Khalid Abduljabbar, Gabriela Acosta Haab, Balazs Acs, Shahin Sayed

Pathology, East Africa

Abstract: The clinical significance of the tumor-immune interaction in breast cancer is now established, and tumor-infiltrating lymphocytes (TILs) have emerged as predictive and prognostic biomarkers for patients with triple-negative (estrogen receptor, progesterone receptor, and HER2-negative) breast cancer and HER2-positive breast cancer. How computational assessments of TILs might complement manual TIL assessment in trial and daily practices is currently debated. Recent efforts to use machine learning (ML) to automatically evaluate TILs have shown promising results. We review state-of-the-art approaches and identify pitfalls and challenges of automated TIL evaluation by studying the root cause of ML discordances in comparison to manual TIL …

Spatial Analyses Of Immune Cell Infiltration In Cancer: Current Methods And Future Directions: A Report Of The International Immuno-Oncology Biomarker Working Group On Breast Cancer, David Page, Chowdhury Jahangir, Sara Verbandt, Rajarsi Gupta, Jeppe Thagaard, Reena Khiroya, Zuzana Kos, Khalid Abduljabbar, Sunil Badve, Shahin Sayed

Pathology, East Africa

Abstract: Modern histologic imaging platforms coupled with machine learning methods have provided new opportunities to map the spatial distribution of immune cells in the tumor microenvironment. However, there exists no standardized method for describing or analyzing spatial immune cell data, and most reported spatial analyses are rudimentary. In this review, we provide an overview of two approaches for reporting and analyzing spatial data (raster versus vector-based). We then provide a compendium of spatial immune cell metrics that have been reported in the literature, summarizing prognostic associations in the context of a variety of cancers. We conclude by discussing two well-described …