Medical Specialties Commons^™

Neuroimaging Of Tuberculosis- Modalities, Imaging Protocols And Radiomics: A Review, Shahmeer Khan, Muhammad Awais, Muhammad Azeemuddin, Ayesha Shoukat

Pakistan Journal of Neurological Sciences (PJNS)

Background and objective:

A large number of review and research articles exists in literature which describe the radiological appearance of various manifestations of nervous system tuberculosis, however there is paucity of text which describes the application of each and every imaging modality in the workup of the entire spectrum of this pathology. The intent of this article is to review the existing literature on the role of different radiological modalities in the stepwise work up of CNS TB. The article focuses on the role of plain radiograph, fluoroscopy, computed tomography, magnetic resonance imaging along with its advanced sequences and nuclear …

Pseudocystic Myxoid Liposarcoma Of The Posterior Chest Wall - A Rare Case Report, Saad Shakil, Sareema Eman Akhtar, Mahum Zaidi, Rizwan Ajmal, Abdulla K. Alsubai, Rahul Ramtohul, Absam Akbar, Aysa Tabassi, Aylin Tabassi, Talal Almas

Medical College Documents

Introduction and importance: Liposarcoma (LPS) is a common soft-tissue sarcoma predominantly diagnosed in adults, arising from malignant adipose cells. Among its various subtypes, myxoid LPS (MLPS) stands out as the second most frequent, accounting for ~30% of all LPS cases. This particular subtype typically manifests in males between the ages of 40 and 50 and is commonly found in the lower extremities. Although rare, MLPS may also occur in the head, neck, and infrequently in the back. Chest wall LPS cases are also sparsely reported.
Case presentation: In this report, we present a case of MLPS in a 69-year-old male …

The State Of Integrated Disease Surveillance In Seven Countries: A Synthesis Report, A C K Lee, B G Iversen, S Lynes, A Rahman-Shepherd, N A Erondu, Mishal S. Khan, A Tegnell, M Yelewa, T M Arnesen, E S Gudo

Community Health Sciences

Objectives: Integrated disease surveillance (IDS) offers the potential for better use of surveillance data to guide responses to public health threats. However, the extent of IDS implementation worldwide is unknown. This study sought to understand how IDS is operationalized, identify implementation challenges and barriers, and identify opportunities for development.
Study design: Synthesis of qualitative studies undertaken in seven countries.
Methods: Thirty-four focus group discussions and 48 key informant interviews were undertaken in Pakistan, Mozambique, Malawi, Uganda, Sweden, Canada, and England, with data collection led by the respective national public health institutes. Data were thematically analysed using a conceptual framework that …

Bridging Gaps: A Qualitative Inquiry On Improving Paediatric Rheumatology Care Among Healthcare Workers In Kenya, Angela Migowa, Sasha Bernatsky, Anthony Ngugi, Helen Foster, Peterrock Muriuki, Roselyter Riang’A, Stanley Luchters

Paediatrics and Child Health, East Africa

Background: Due to the paucity of paediatric rheumatologists in Kenya, it is paramount that we explore strategies to bridge clinical care gaps for paediatric rheumatology patients in order to promote early diagnosis, prompt referral, and optimal management.

Purpose: To identify proposed interventions which can improve the ability of non-specialist healthcare workers to care for paediatric rheumatology patients across Kenya.

Methods: We conducted 12 focus group discussions with clinical officers (community physician assistants), nurses, general practitioners and paediatricians across six regions in Kenya. Interviews were conducted, audio-recorded, transcribed verbatim, and analysed using MAXQDA 2022.2 software.

Results: A total of 68 individuals …

Surgical Site Infections Post Cesarean Section And Associated Risk Factors: A Retrospective Case-Control Study At A Tertiary Hospital In Kenya, David Odada, Jasmit Shah, Annastacia Mbithi, Reena Shah

Internal Medicine, East Africa

Background: Surgical site infection is a common healthcare-associated infection that affects maternal health, yet it can be prevented or controlled. Caesarian sections are most likely to develop surgical site infections. The rates of delivery by caesarian section in reported to be higher that the acceptable rates in some healthcare facilities. Risk factors for surgical site infections can be identified and modified to reduce the occurrence of surgical site infections. This study aims to determine the risk factors that contribute to surgical site infections post caesarian section in a tertiary teaching hospital in Kenya.

Methods: This was a retrospective …

Morphological And Metabolic Criteria Of Covid-19 Vaccine Associated Axillary Nodes On 18-Fluorodeouxyglucose Pet/Ct Imaging In Breast Cancer Patients, Nosheen Fatima, Unaiza Zaman, Areeba Zaman, Sidra Zaman, Rabia Tehseen, Maseeh Uz Zaman

Department of Radiology

Background: In the current era vaccine-associated lymphadenopathy (VAL) is not an uncommon presentation on 18F-FDG PET/CT examinations in patients inoculated with Coronavirus disease 2019 (COVID-19) vaccination. In this study, we are presenting data of VAL on 18F-FDG PET/CT regarding its prevalence, temporal response to vaccination and imaging characteristics of VAL.
Methods: Seventy-eight (78) consecutive vaccinated breast cancer (BC) patients who had 18FDG PET/CT were retrospectively analyzed. All patients had COVID-19 vaccine shots in contralateral arms and none in breast cancer site axilla (BSA). In 35 patients 18FDG avid nodes were found in vaccine site axilla (VSA). In 25 patients 18FDG …

Labrad : Vol 48, Issue 2 - December 2023, Aga Khan University Hospital, Karachi

LABRAD - Departments of Pathology & Laboratory Medicine and Radiology Archives

• Editorial
• Articles
• Navigating Lab Excellence in LARAD
• Lab Resilience in a Changing Climate: Sustainable Strategies for Future-Proof Clinical Laboratories
• Professional Insights from a Pioneer in Autoimmune Disease Testing: The Future of Antinuclear/Anticellular Antibody Testing
• Insights into CCHF and Other Viral Hemorrhagic Fevers
• Bombay Blood Group
• Role and Application of Cytogenetics in Multiple Myeloma
• Low-grade Nasopharyngeal Papillary Adenocarcinoma in a Deceivingly "blue" Biopsy
• Transplant Immunology – Diagnostics
• The Best of the Past
• Farewell Chronicles: Celebrating Dr Anila Rashid's Journey
• The Best of the Past
• Farewell Chronicles: Celebrating Dr Anila Rashid's Journey
• Polaroid
• Chemical Pathology
• Radiology
• Hematology
• Histopathology
• Microbiology
• Molecular Pathology
• Tests …

Assessment Of Care-Arrangement Of People With Dementia In Karachi By 10/66 Protocol, Qurat Ul Ain Khan

Pakistan Journal of Neurological Sciences (PJNS)

Background and objective:

Pakistan is a low middle-income country (LMIC) in South Asia with a rising aging population. This study aimed to understand care-arrangement and resources of people with dementia (PWD) in Karachi, Pakistan.

Methods:

This cross-sectional mixed-method (qualitative and quantitative) study was carried out using 10/66 protocol for dementia patients. Data collection for the study was done from September 2016 till August 2017.This assessed characteristics of patients and caregivers, the economic impact of caregiving, and resources available to care for people with dementia (PWD).

Results:

One-hundred-nineteen PWD and their caregivers were included in the study. The average gross national …

Artificial Intelligence And Neurosurgery: A Revolution In The Field, Ahtesham Khizar

Pakistan Journal of Neurological Sciences (PJNS)

Artificial Intelligence (AI) is being used in the field of neurosurgery for improving patient outcomes, reducing the risk of complications, and increasing the efficiency of surgical procedures. AI algorithms can analyze patient data, plan surgical procedures, guide surgical instruments, monitor brain activity, and improve post-operative care. The benefits of incorporating AI into neurosurgical practice include pre-operative planning, intraoperative navigation, real-time monitoring, and post-operative care. AI is already being used in neurosurgery for image segmentation, surgical planning, intraoperative navigation, real-time monitoring, and predictive analytics. The potential applications of AI in neurosurgery include personalized medicine, virtual reality, robotic surgery, predictive analytics, and …

Evaluation Of Stroke Awareness And Risk Factor Prevalence Among Students At A Public Sector University In Quetta, Anjum Farooq, Muhammad Essa, Muhammad Saleem, Abdul Aleem, Muhammad Rizwan

Pakistan Journal of Neurological Sciences (PJNS)

Background and Objective:

Stroke is the leading cause of death and disability. Improving stroke knowledge among medical students will help to improve stroke care and its prevention. This study aims to evaluate the prevalence of risk factors and stroke awareness among university students.

Methods:

This cross-sectional study was conducted among students at Sardar Bahadur Khan Women's University in Quetta. An eleven-question multiple-choice survey was administered to assess participants' knowledge of stroke-related concepts. The initial study was conducted using descriptive statistics. Additionally, a supplementary screening for common risk factors linked to stroke was included in the study, which involved blood pressure, …

Frequency Of Risk Factors For Stroke In Young Pakistani Population, Faizan Aslam, Atif Maqsood, Adeel Rauf, Kashif Nawaz, Azam Aslam

Pakistan Journal of Neurological Sciences (PJNS)

Background and Objective:

There is paucity of data regarding risk factors of stroke in young Pakistanis. The objective of this study was to identify the frequency of risk factors for ischemic stroke in the young Pakistani population.

Methods:

This was a retrospective Cross sectional study conducted at Aziz Fatima Hospital Neurology outpatient’s department between January 2022 to April 2022. All patients presenting with an ischemic stroke within the past month and age between 20 and 49 years were included. Data was collected from patient notes using a table which listed the patient’s demographic information and risk factors. All the patients …

Protocol For Intervention Development To Improve Adolescent Perinatal Mental Health In Kenya And Mozambique: The Inspire Project, Kethakie Lamahewa, Sally Griffin, Nadine Seward, Marleen Temmerman, Jonathan West, Málica De Melo, Elizabeth Raby, Aline Alonso, Bethan Burnside, Fernando Chissale

Obstetrics and Gynaecology, East Africa

Introduction: Mental health interventions have traditionally been developed by clinicians and researchers without the meaningful engagement and partnership with those who would receive, deliver, and fund them. Recent progress has highlighted the importance of the co-design of interventions, through stakeholder participation, as a means of increasing the integration of mental health interventions into existing health, education, and social care systems. This protocol describes the pre-implementation phase of the INSPIRE (Innovative approaches to adolescent perinatal wellbeing) project which aims to identify challenges, and design and test interventions to promote mental wellbeing and good mental health of adolescent girls during pregnancy and …

Prevalence Of Lifestyle Cardiovascular Risk Factors And Estimated Framingham 10-Year Risk Scores Of Adults With Psychotic Disorders Compared To Controls At A Referral Hospital In Eldoret, Kenya, Edith Kwobah, Nastassja Koen, Ann Mwangi, Lukoye Atwoli, Dan Stein

Brain and Mind Institute

Introduction: Lifestyle factors such as smoking, alcohol use, suboptimal diet, and inadequate physical activity have been associated with increased risk of cardiovascular diseases. There are limited data on these risk factors among patients with psychosis in low- and middle-income countries.

Objectives: This study aimed to establish the prevalence of lifestyle cardiovascular risk factors, and the 10-year cardiovascular risk scores and associated factors in patients with psychosis compared to controls at Moi Teaching and Referral Hospital in Eldoret, Kenya.

Methods: A sample of 297 patients with schizophrenia, schizoaffective disorder, or bipolar mood disorder; and 300 controls matched for age and sex …

Child With Developmental Delay And Pathological Myopia: Poretti–Boltshauser Syndrome, Arshad Mehmood, Javeria Raza Alvi, Ahmad Bilal, Sameen Qureshi, Shaila Ali, Tipu Sultan

Pakistan Journal of Neurological Sciences (PJNS)

Poretti–Boltshauser syndrome is rare genetic disorder of brain malformation with ocular findings due to mutation in LAMA1 gene. We report a case of five years old girl who presented with high myopia, delayed language and motor development with otherwise normal neurological examination. Brain imaging findings were consistent of Poretti–Boltshauser syndrome with cerebellar dysplasia and cyst (CDC). However, cerebellar ataxia and retinopathy were not found in our index case.

Support, Networks, And Relationships: Findings From A Mixed-Methods Evaluation Of A Mentorship Programme For Early Career Women Researchers In Sexual And Reproductive Health And Rights, Muhammad Asim, Peter Muriuki Gatheru, Joy J. Chebet, Mehr G. Shah, Anna Thorson, Vanessa Brizuela

Community Health Sciences

Low research output among women researchers in health research has been linked to inadequate mentorship opportunities for early career women researchers and particularly in sexual and reproductive health and rights (SRHR) field. Mentorship has been recognized as a contributor to strengthening research capacity and as beneficial for both mentors and mentees. Women researchers oftentimes experience negative impacts of organizational and structural gender inequities related to formal and informal mentoring. In 2020, the UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction at WHO launched a mentorship programme for early career SRHR women researchers from low- and …

In The Symphony Of Green Spaces,Brain And Its Thoughts Find The Healing Melody., Man Mohan Mehndiratta, Vasundhara Aggarwa, Nishant Tomar

Pakistan Journal of Neurological Sciences (PJNS)

No abstract provided.

A Rare Presentation Of Wilson Disease: A Case Report, Soban Khan, Zaid Waqar, Haris Majid, Ahmed Farhan, Shajee Siddique

Pakistan Journal of Neurological Sciences (PJNS)

Wilson Disease results from autosomal recessive mutation in ATP7B gene which leads to reduced formation of ceruloplasmin protein in the body that acts as a copper transporter. Due to its deficiency, there is the build-up of copper in the liver and brain among other organ systems and it leads to the development of various clinical abnormalities but commonly presents either as hepatic dysfunction and/or cirrhosis in young patients with movement disorder. Here we present a case that presented with hypoglycemia and hypothermia in absence of any infection, drug abuse or metabolic abnormality. He was later diagnosed as Wilson disease. Wilson …

Burden Of Bradycardia And Barriers To Accessing Bradycardia Therapy In Underserved Countries, Diego Egas, Francisco Rodriguez, Aparna Jaswal, Jeilan Mohamed, Goran Milasinovic, Ahmed Al Fagih

Internal Medicine, East Africa

Bradycardia, a condition characterized by an abnormally slow heart rate, poses significant challenges in terms of diagnosis and treatment. While it is a concern world-wide, low- and middle-income countries (LMICs) face substantial barriers in accessing appropriate bradycardia therapy. This article aims to explore the global aetiology and incidence of bradycardia, compare the prevalence and management of the condition in high-income countries versus LMICs, identify the key reasons behind the disparities in access to bradycardia therapy in LMICs, and emphasize the urgent need to address these disparities to ensure equitable healthcare on a global scale

Exploring User Experiences Of A Text Message-Delivered Intervention Among Individuals On Opioid Use Disorder Treatment In Kenya: A Qualitative Study, Sarah Kiburi, Saeeda Paruk, Edith Kamaru Kwobah, Bonginkosi Chiliza

Internal Medicine, East Africa

Opioid use disorder causes significant burden of disease and treatment comprises pharmacotherapy and psychosocial treatment. Cognitive behavioral therapy is an effective psychosocial intervention used in substance use disorders treatment and can be delivered using digital approach. There is limited use of digital treatment among individuals with opioid use disorder in Kenya. This study aimed to describe the experiences and feedback from participants with opioid use disorder enrolled in a text-message intervention in Kenya. Qualitative data was collected from participants in the intervention arm of a feasibility trial testing a text-message intervention based on cognitive behavioral therapy. Data was collected using …

Improving Implant Training For Physicians And Their Teams In Under-Represented Regions, Jeilan Mohamed, Mohamed Varwani, Abdul Raqib, Emin Evren Ozcan

Internal Medicine, East Africa

The burden of cardiovascular disease is increasing globally, with low- and middle-income countries (LMICs) absorbing most of the burden while lacking the necessary healthcare infrastructure to combat the increase. In particular, the disparity in pacemaker implants between high-income countries and LMICs is glaring, partially spurned by reduced numbers of physicians and supporting staff who are trained in pacemaker implant technique. Herein, we will discuss current pacemaker implant training models, outline training frameworks that can be applied to underserved regions, and review adjunctive training techniques that can help supplement traditional training models in LMICs.

The Analgesic Efficacy Of Ultrasound-Guided Transversus Abdominis Plane Block Vs. Local Anesthetic Infiltration Technique In Major Gynecologic Surgery: A Randomized Controlled Trial, Samina Ismail, Akbar A. Mistry, Ali S. Siddiqui, Aliya Aziz, Nadeem Zuberi

Department of Anaesthesia

Background and aim: Transversus abdominis plane (TAP) block and local anesthetic infiltration (LAI) technique are used as part of the multimodal analgesic regimen after abdominal surgery. Postoperative opioid consumption and analgesic efficacy was compared using TAP and LAI techniques in patients undergoing gynecologic surgery in a randomized, controlled clinical trial.
Material and methods: Total of 135 patients scheduled for major gynecological surgeries were allocated into three groups: group T received bilateral TAP block with bupivacaine 0.25%; group I received LAI with 0.25% bupivacaine with epinephrine 5 μ/mL in the peritoneum and abdominal wall, and group C was control group. Anesthesia …

Prevalence And Missed Cases Of Respiratory Distress Syndrome Disease Amongst Neonatal Deaths Enrolled In The Kenya Child Health And Mortality Prevention Surveillance Network (Champs) Program Between 2017 And 2021, Harun O. Owuor, Victor Akelo, Florence Murila, Dickens Onyango, Magdalene Kuria, Emily Rogena, Gunturu Revathi, Paul Mitei, Solomon Sava, Joyce Were

Pathology, East Africa

Objectives: To describe RDS in neonatal deaths at the CHAMPS-Kenya site between 2017 and 2021.

Methods: We included 165 neonatal deaths whose their Causes of death (COD) were determined by a panel of experts using data from post-mortem conducted through minimally invasive tissue specimen testing, clinical records, and verbal autopsy.

Results: Twenty-six percent (43/165) of neonatal deaths were attributable to RDS. Most cases occurred in low birthweight and preterm neonates. From these cases, less than half of the hospitalizations were diagnosed with RDS before death, and essential diagnostic tests were not performed in most cases. Most cases received suboptimal levels …

Microbiota Dynamics, Metabolic And Immune Interactions In The Cervicovaginal Environment And Their Role In Spontaneous Preterm Birth, Stanely Onyango, Jia Dai Mi, Anjela Koech, Patricia Okiro, Marleen Temmerman, Peter Von Dadelszen, Rachel Marie Tribe, Geoffrey Omuse

Pathology, East Africa

Differences in the cervicovaginal microbiota are associated with spontaneous preterm birth (sPTB), a significant cause of infant morbidity and mortality. Although establishing a direct causal link between cervicovaginal microbiota and sPTB remains challenging, recent advancements in sequencing technologies have facilitated the identification of microbial markers potentially linked to sPTB. Despite variations in findings, a recurring observation suggests that sPTB is associated with a more diverse and less stable vaginal microbiota across pregnancy trimesters. It is hypothesized that sPTB risk is likely to be modified via an intricate host-microbe interactions rather than due to the presence of a single microbial taxon …

Sars-Cov-2 Seroprevalence In Pregnant Women In Kilifi, Kenya From March 2020 To March 2022, Angela Koech, Geoffrey Omuse, Alex Mugo, Isaac Mwaniki, Joseph Mutunga, Moses Mukhanya, Onesmus Wanje, Grace Mwashigadi, Geoffrey Katana, Marleen Temmerman

Centre of Excellence in Women and Child Health

Background: Seroprevalence studies are an alternative approach to estimating the extent of transmission of SARS-CoV-2 and the evolution of the pandemic in different geographical settings. We aimed to determine the SARS-CoV-2 seroprevalence from March 2020 to March 2022 in a rural and urban setting in Kilifi County, Kenya.

Methods: We obtained representative random samples of stored serum from a pregnancy cohort study for the period March 2020 to March 2022 and tested for antibodies against the spike protein using a qualitative SARS-CoV-2 ELISA kit (Wantai, total antibodies). All positive samples were retested for anti-SARS-CoV-2 anti-nucleocapsid antibodies (Euroimmun, ELISA kits, NCP, …

Women, Power, And Cancer: A Lancet Commission, Ophira Ginsburg, Verna Vanderpuye, Ann Marie Beddoe, Nirmala Bhoo-Pathy, Freddie Bray, Carlo Caduf, Narjust Florez, Ibtihal Fadhil, Nazik Hammad, Miriam Mutebi

General Surgery, East Africa

Women interact with cancer in complex ways, as healthy individuals participating in cancer prevention and screening activities, as individuals living with and beyond a cancer diagnosis, as caregivers for family members and friends, as patient advocates, as health workers and healthcare professionals, and as cancer researchers and policy makers. The topic of women and cancer spans broad terrain, beyond women’s cancers and the biomedical aspects of any type of cancer that women in all their diversities might experience. It is inclusive of the ways in which sex and gender influence exposures to cancer risk factors, interactions with the cancer health …

Advanced Breast Cancer Care: The Current Situation And Global Disparities, Aruni Ghose, Susannah Stanway, Bhawna Sirohi, Miriam Mutebi, Sarah Adomah

General Surgery, East Africa

Objectives: Advanced breast cancer (ABC) is an incurable disease. The number of people living with ABC has increased globally. Disparities in ABC care exist at both individual and system levels. ABC cases in most low- and middle-income countries (LMICs) are underreported due to a lack of national cancer registries. Harmonized guidelines for resource stratification and capacity building in LMICs are under way.

Data sources: MEDLINE, Cochrane, and Google Scholar databases were used.

Conclusion: To improve ABC outcomes and resolve disparities, more robust health systems or pathways need to be developed across the cancer continuum in addition to social education.

Implications …

Association Between E-Cigarette Use And Myocardial Infarction: A Systematic Review And Meta-Analysis, Muhammad Talal Ashraf, Asim Shaikh, Muhammad Shakeel Khuzzaim Khan, Naseer Uddin, Muhammad Arham Bin Kashif, Syed Hassan Ahmed Rizvi, Hammad Khalid, Stafford Jude Sam, Affan Sohail

Department of Medicine

Background: The popularity of e-cigarettes has risen dramatically over the last few years, particularly among the younger population. Although the use of combustible cigarettes has established evidence to be associated with the development of several adverse cardiopulmonary diseases, the investigations regarding the prospective long-term effects of e-cigarette use on the cardiovascular system have just begun. We set to investigate if there is an association between the history of MI and e-cigarette use among smokers and non-smokers?
Methods: The current review aims to assess the association of myocardial infarction with e-cigarette consumption. PubMed, Google Scholar, and Cochrane Central Register of Controlled …

Facility-Based Audit System With Integrated Community Engagement To Improve Maternal And Perinatal Health Outcomes In Rural Pakistan: Protocol For A Mixed Methods Implementation Study, Zahid Memon, Wardah Ahmed, Shah Muhammad, Sajid Bashir Soofi, Shanti Chohan, Arjumand Rizvi, Paul Barach, Zulfiqar Ahmed Bhutta

Centre of Excellence in Women and Child Health

Background: Maternal and newborn mortality in Pakistan remains as a major public health challenge. Pakistan faces significant infrastructure challenges and inadequate access to quality health care, exacerbated by sociocultural factors. Facility-based audit systems coupled with community engagement are key elements in achieving improved health system performance. We describe an implementation approach adapted from the World Health Organization audit cycle in real-world settings, with a plan to scale-up through mixed methods evaluation plan.
Objective: This study aims to implement a locally acceptable and relevant audit system and evaluate its feasibility within the rural health system of Pakistan for scale-up.
Methods: The …

Heartburn's Hidden Impact: A Narrative Review Exploring Gastroesophageal Reflux Disease (Gerd) As A Cardiovascular Disease Risk Factor, Jacob J. Gries, Bing Chen, Salim S. Virani, Hafeez Ul Hassan Virk, Hani Jneid, Chayakrit Krittanawong

Office of the Provost

Gastroesophageal reflux disease (GERD) is a very common disease with an estimated 442 million cases worldwide. It is a well-documented independent risk factor for many gastrointestinal pathologies, however, its role in cardiovascular disease (CVD) is unclear, despite its high prevalence in patients with CVD. Although traditionally considered a causative agent of noncardiac chest pain, a common imitator of cardiac chest pain, or an incidentally shared comorbidity in patients with CVD, a number of studies have implicated GERD and its therapies as risk factors for CVD. This narrative review will explore the relationship between GERD and CVD, including medical and mechanical …

Isolated Small Airways Obstruction Predicts Future Chronic Airflow Obstruction: A Multinational Longitudinal Study, Ben Knox Brown, James Potts, Valentina Quintero Santofimio, Cosetta Minelli, Jaymini Patel, Peter Gj Burney, Andre Fs Amaral, Najlaa Mohammed Abass, Dhiraj Agarwal, Asaad A. Nafees

Community Health Sciences

Background: Chronic airflow obstruction is a key characteristic of chronic obstructive pulmonary disease. We investigated whether isolated small airways obstruction is associated with chronic airflow obstruction later in life.
Methods: We used longitudinal data from 3957 participants of the multinational Burden of Obstructive Lung Disease study. We defined isolated small airways obstruction using the prebronchodilator mean forced expiratory flow rate between 25% and 75% of the forced vital capacity (FVC) (FEF25-75) if a result was less than the lower limit of normal.
Results: Median follow-up time was 8.3 years. Chronic airflow obstruction was more likely to develop in participants with …