Medical Specialties Commons^™

Blood-Based Multi-Cancer Detection Using A Novel Variant Calling Assay (Deepgentm): Early Clinical Results, Rebecca M. Tuttle, Frederic Ris, Minia Hellan, Jonathan Douissard, Jorge J. Nieva, Frederic Triponez, Yanghee Woo, David Geller, Nicolas C. Buchs, Leo Buehler, Stefan Moenig, Christope E. Iselin, Wolfram Karenovics, Patrick Petignat, Giang Thanh Lam, Manuela Undurraga Malinervo, James R. Ouellette, Debashish Bose, Nael Ismail, Christian Toso

Department of Surgery Faculty Publications

This is an early clinical analysis of the DEEPGENTM platform for cancer detection. Newly diagnosed cancer patients and individuals with no known malignancy were included in a prospective open-label case-controlled study (NCT03517332). Plasma cfDNA that was extracted from peripheral blood was sequenced and data were processed using machine-learning algorithms to derive cancer prediction scores. A total of 260 cancer patients and 415 controls were included in the study. Overall, sensitivity for all cancers was 57% (95% CI: 52, 64) at 95% specificity, and 43% (95% CI: 37, 49) at 99% specificity. With 51% sensitivity and 95% specificity for all stage …

A Collection Of Research In Transplantation Surgery: The Importance Of Assessing Outcomes In A Field Dependent On The Availability Of Limited Resources, Amy J. Hargrove

Theses & Dissertations

This thesis is a collection of three independent projects related to transplantation surgery. In summary, project I involves an assessment of long-term quality of life outcomes of intestinal transplantation in pediatric patients who are now in adulthood, with comparison to other solid organ transplant patients. Health related quality of life surveys were completed in 14 adult patients who underwent intestine, liver, or kidney transplants as children. Project II evaluates pre-surgical characteristics of patients undergoing liver transplant to assess predictive factors for the need of venovenous bypass utilization intraoperatively by assessing trends at the University of Nebraska Medical Center in 95 …

Gum Chewing, Added To Conventional Feeding, Reduces Risk Of Post-Operative Ileus After Elective Hip And Knee Arthroplasty Procedures In Elderly Population: A Protocol For A Parallel Design, Open-Label, Randomized Controlled Trial, Obada Hussein Hasan, Laraib Mazhar, Ahsun Jiwani, Dilshad Begum, Riaz Hussain Lakdawala, Shahryar Noordin

Department of Medicine

Introduction: Postoperative ileus (poi) is defined as a temporary cessation of bowel movement after a surgical procedure. Cessation of bowel movement not only leads to disturbing constipation but also may lead to nausea, loss of appetite, and food intolerance. Literature reports "sham feeding" (gum-chewing) effect as an increase in chewing and saliva which enhances the gastric emptying and overall motility of gut as a cephalic phase of digestion. Therefore, we aim to assess the effect of adding gum-chewing to the conventional postoperative feeding regimen on restoring postoperative bowel function and length of stay in hospital of patients undergoing elective hip …

A Cbct Based Evaluation Of Root Proximity Of Maxillary Posterior Teeth To Sinus Floor In A Subset Of Pakistani Population, Momina Motiwala, Aysha Arif, Rabia Ghafoor

Section of Dental-Oral Maxillofacial Surgery

Objective: To evaluate the vertical relationship of the roots of maxillary posterior teeth with maxillary sinus floor, and its association with age, gender and bilateral jaw symmetry.
Methods: The cross-sectional study was conducted at a tertiary care hospital in Karachi from June to December 2018, and comprised patients who visited the dental clinics and underwent cone-beam computed tomography scans. The scans were evaluated in the axial, coronal and sagittal planes and roots were classified using Jungs classification for proximity to maxillary sinus floor. The distance between the sinus floor and the apices of maxillary posterior teeth was measured. Data was …

Comparison Of Surgical Site Infection After Skin Closure By Prolene Or Staples In Bilateral Simultaneous Knee Arthroplasty Patients: A Parallel Design Randomized Controlled Trial Protocol, Obada Hussein Hasan, Ahsun Jiwani, Laraib Mazhar, Dilshad Begum, Riaz Hussain Lakdawala, Shahryar Noordin

Department of Medicine

Introduction: Knee arthroplasty also known as the total knee replacement is an orthopedic surgical procedure done to resurface the knee that has been severely damaged by arthritis. After the completion of the surgical procedure, the skin closure is done. The optimal goal of skin closure after the procedure is to promote rapid healing and an acceptable cosmetic result while minimizing the risk of infection. Skin closure after knee arthroplasty is done by using either of the two widely used sutures i.e., polypropylene (Prolene) sutures or the skin staple sutures. There are no standard guidelines as which type of the suture …

Resilience And Its Associated Factors In Head And Neck Cancer Patients In Pakistan: An Analytical Cross-Sectional Study, Nida Zahid, Wajeeha Zahid, Wardah Khalid, Syed Iqbal Azam, Mubasher Ikram, Aneesa Hassan, Haissan Iftikhar, Shireen Shehzad Bhamani, Adnan Jabbar, Shabbir Akhtar, Moghira Siddiqui, Mohammad Sohail Awan, Nargis Asad, Khabir Ahmad

Department of Surgery Docs

Introduction: The study aimed to assess resilience and its associated factors in head and neck cancer patients, post-treatment in a low middle income country (LMIC) such as Pakistan.
Methods: An analytical cross-sectional study was conducted from November 2019 to May 2020 among head and neck cancer patients aged at least 18 years at the largest private tertiary care hospital, in Karachi, Pakistan. Information regarding their resilience scores was collected through Wagnild and Young's Resilience scale that comprises of 14 items (RS-14). Moreover, depression and anxiety were also assessed via Hospital Anxiety and Depression Scale (HADS) and social support was assessed …

Pathophysiology Of Delayed Cerebral Ischemia After Subarachnoid Hemorrhage: A Review., William S. Dodd, Dimitri Laurent, Aaron S. Dumont, David M. Hasan, Pascal M. Jabbour, Robert M. Starke, Koji Hosaka, Adam J. Polifka, Brian L. Hoh, Nohra Chalouhi

Department of Neurosurgery Faculty Papers

Delayed cerebral ischemia is a major predictor of poor outcomes in patients who suffer subarachnoid hemorrhage. Treatment options are limited and often ineffective despite many years of investigation and clinical trials. Modern advances in basic science have produced a much more complex, multifactorial framework in which delayed cerebral ischemia is better understood and novel treatments can be developed. Leveraging this knowledge to improve outcomes, however, depends on a holistic understanding of the disease process. We conducted a review of the literature to analyze the current state of investigation into delayed cerebral ischemia with emphasis on the major themes that have …

Functional Outcomes And Complications Of Total Hip Arthroplasty With Dual Mobility Cup : An Audit, Muhammad Younus Khan Durrani, Javeria Saeed, Masood Umer, Pervaiz Hashmi

Section of Orthopaedic Surgery

Objective: To determine the functional outcomes in total hip arthroplasty with a dual mobility cup, performed in our hospital.
Methods: After receiving an exemption from the Ethics review committee of the hospital, data collection for audit was started in January 2019. Records from July 2016 to June 2018 were included. All patients who underwent total hip arthroplasty with dual mobility prosthesis without any age limit were included. A proforma was prepared to collect the required information. Data was entered and analyzed on SPSS v. 21.
Results: Two hundred and ten patients were included, 114 females and 96 males. Of the …

Frequency Of Angular Malalignment After Intramedullary Nailing For Femur Shaft Fractures - A Cross-Sectional Study, Hammad Naqi Khan, Moiz Ali, Rizwan Haroon Rashid, Yasir Mohib, Pervaiz Hashmi

Section of Orthopaedic Surgery

Objective: To determine the frequency of angular malalignment of femur in patients undergoing Intra Medullary nailing for femur shaft fracture by measuring axis on immediate postoperative plain radiographs.
Methods: A cross-sectional study was conducted at the Section of Orthopaedics, Department of Surgery, Aga Khan University Hospital, Karachi from 1st January 2019 till 30th June 2019. All patients between the ages of 15 to 80 years who underwent IM nailing for femur shaft fractures were included. Angulation was measured on immediate post-operative X-ray films and an angle of ≥5° on AP and/or lateral views was defined as malalignment.
Results: A total …

Aging Gracefully - Orthocon 2021, Masood Umer, Haroon Ur Rashid, Rizwan Haroon Rashid

Section of Orthopaedic Surgery

No abstract provided.

Outcome Of Percutaneous Screw Fixation Of Posterior Pelvic Ring Injuries, Hussain Wahab, Pervaiz Hashmi, Haroon Kasi, Naveed Baloch, Tashfeen Ahmad, Haroon Rashid, Masood Umer

Section of Orthopaedic Surgery

Objective: To evaluate the clinical outcome of percutaneous fixation for unstable pelvic ring injury.
Methods: This retrospective study was conducted at orthopaedics section of Aga Khan University Hospital Karachi, Pakistan from July 2015 to December 2018. Data was retrieved from trauma registry from July 2015 till December 2018, including all patients who underwent percutaneous fixation for pelvic ring injury. Majeed pelvic score was used to determine the functional outcome.
Results: A total number of 30 patients were included, 27(90.0%) adults, and 3(10.0%) paediatrics patients. There were 21(70.0%) males and 9(30.0%)females. . Mean age of patients was 37.1±16.1 years. Post op …

Our Experience Of Treating Adult Bone Lymphoma, A Retrospective Cross-Sectional Study In A Tertiary Care Center, Aga Khan University Hospital, Karachi, Masood Umer, Muhammad Younus Khan Durrani, Javeria Saeed, Nasir Ud Din

Section of Orthopaedic Surgery

Objective: To determine the experience at the Aga Khan University Hospital in diagnosing and treating adult patients with primary lymphoma of bone.
Methodology: All patients with Primary lymphoma of bone (PLB) that were diagnosed and/or treated at Aga Khan University Hospital, Karachi from 2005 to 2019 were included as part of this study.
Results: There were 17 patients with PLB including 13 (76.5%) males and 4 (23.5%) females with a mean age of 44 ± 16.5 years. Nine patients were between 30-59 years of age at diagnosis. The mean follow-up time of patients was 80±46.7 months. Six patients had tumours …

Our Experience Of Mega-Prosthesis In Bone Tumours: A Retrospective Cross-Sectional Study In A Tertiary Care Hospital, Masood Umer, Eraj Khurshid Khan, Javeria Saeed

Section of Orthopaedic Surgery

Objective: To evaluate the oncological and functional outcomes of bone tumour patients who underwent reconstruction with mega prosthesis.
Methodology: A retrospective study was conducted in the department of Orthopaedics Aga Khan University Hospital, Karachi. All the paediatric and adult age group patients diagnosed with malignant, benign and metastatic bone tumours and meeting the inclusion criteria were selected and analysed. Retrospective data was collected from January 2008-January 2018.
Results: Sixty-two patients, 30 (48.4%) females and 32 (51.6%) males. were included in the study. Of these 57 (92%) cases had involvement of the lower limb. The mean age was 36.95±19.1 years with …

Solitary Langerhans Cell Histiocytosis Of Skull: Case Report With One-Year Follow-Up, Muhammad Junaid, Syed Sarmad Bukhari, Ali Afzal

Section of Neurosurgery

Langerhans cell histiocytosis (LCH) is a rare disorder characterised by increased production of Langerhans-type histiocytes. It is more common in the pediatric age group with a predilection for osseous involvement, though any organ may be involved. A 10-year male child was brought to the neurosurgical clinic with a slow growing painful tender mass on the head. Initial attempt to biopsy the lesion failed due to excessive bleeding. It was later imaged and removed with a frontal craniotomy. Histopathological evaluation along with immunohistochemistry revealed the true nature of the lesion. Follow-up revealed complete excision of the lesion and no recurrence at …

Functional And Radiological Outcomes Of Atypical Femur Fractures Among Elderly In Karachi, Pakistan, Rizwan Haroon Rashid, Marij Zahid, Usama Khan, Yasir Mohib, Pervaiz Hashmi

Section of Orthopaedic Surgery

Objective: To assess the functional and radiological outcomes in a unique class of fractures i.e. atypical femur fractures and to assess the effects of osteoblastic agents in healing.
Methods: It is a retrospective observational study conducted at Aga Khan University Hospital, Karachi, Pakistan. All patients with atypical femur fractures who were surgically managed with intramedullary nailing from January, 2013 to June, 2017 and with a follow-up till December 2019, were included in the study. Radiological outcomes were expressed as mean healing time and functional outcomes were recorded as mean Short Musculoskeletal Functional Assessment (SMFA) score.
Results: A total of twenty-four …

Perceptions Of Surgeons On Surgical Antibiotic Prophylaxis Use At An Urban Tertiary Hospital In Tanzania, Elizabeth Mmari, Eunice Pallangyo, Authar Ali, Dereck A. Kaale, Isaac Mawalla, Muzdalfat Abeid

General Surgery, East Africa

Background: Surgical Site Infections are a major cause of morbidity and mortality among operated patients. In spite of the accessibility of universal and national guidelines for surgical prophylaxis, recent studies surveying the present routine of prophylaxis have demonstrated overutilization of a wide range antibacterial medication for a single patient. Few studies have shown qualitatively factors influencing this and perceptions of surgeons on surgical antibiotic prophylaxis use. Unfortunately, none of these studies have been done in Tanzania.

Objective: To describe the perceptions of surgeons on surgical antibiotic prophylaxis use at an urban tertiary hospital.

Methods: A qualitative study …

Evaluating The Correlation Of Academic Pursuits And Relative Value Unit Reimbursement In Trauma Surgery, Erin Gilbert, Joseph J. Stirparo Md

Research Scholars

No abstract provided.

Impact Of Fellow/Resident Involvement During Colonoscopy In A High-Volume Colorectal Surgical Practice, Zachary Chomitzky, William Sangster

Research Scholars

No abstract provided.

Abdominal Vascular Injuries- What General/ Trauma Surgeons Should Know?, Zia Ur Rehman

Department of Surgery Docs

Abdominal vascular injuries are the common cause of death post-trauma. These are challenging injuries to manage due to severe haemodynamic instability, other associated injuries and difficulty in accessing and controlling these deep-seated vessels. Early control of bleeding can decrease mortality in these patients. Abdominal vasculature is divided into three zones, each requiring different operative strategy for exposure. Standard vascular surgery principles of achieving proximal and distal control before exploring any haematoma are followed when managing these injuries. Resuscitative endovascular balloon occlusion of aorta is a minimally invasive method of achieving proximal aortic occlusion. This also acts as bridge for definitive …

Seizure Control After Surgical Resection Of Insular Glioma, Fatima Gauhar, Saqib Kamran Bakhshi, Muhammad Shahzad Shamim

Medical College Documents

Insular gliomas most commonly present with drug-resistant seizures, irrespective of the tumour grade. Even though surgery is the mainstay of treatment, complex anatomical location and close proximity to eloquent cortex makes surgical resection difficult. Herein the authors have reviewed the literature with regards to seizure control after surgical management of these tumours. The review does not address quality of life, or survival benefits of surgery. In summary, excision of these gliomas significantly improves seizure control, and extent of resection along-with trans-cortical approach are important predictors of seizure outcome.

Comparison Of Brachiobasilic Transposition Arteriovenous Fistula Outcomes Among Diabetic And Non-Diabetic Patients: A Case Controlled Study, Zia Ur Rehman, Waryam Muhammad Saleh, Anum Sadruddin Pidani

Department of Surgery Docs

Diabetes is considered a risk factor for arteriovenous fistula failure and increased perioperative complications; but this view is not proven for patients undergoing brachiobasilic transposition arteriovenous fistula (BBT-AVF). Fifty-one (68.9%) diabetic and 23 (31.08%) non-diabetic patients undergoing single-stage BBT-AVF were compared in terms of perioperative complications, access maturation and patency rates at The Aga Khan University Hospital from between January 2016 to December 2017. Diabetics were elder and more obese. The perioperative complications 19 (37.2%) vs. 8 (34.7%), and access maturation rates were compared (93.2% vs. 95.5%) between the two groups. At 6 months, access patency in diabetics was lower …

Institutional Factors In General Surgery Resident Wellness And Burnout: Identification Via A Modified Delphi Technique, Darci C. Foote, Gurjit Sandhu, Kathryn Ziegler, James Lau

Conference Presentation Abstracts

Background: While there has been significant focus on individual and programmatic factors impacting general surgical residents wellbeing and burnout, the effect of the greater institutional macrocosm has not been well studied. Our work seeks to identify organizational factors that may be implicated in resident wellness. Summary of Work: Using a modified Delphi technique, a survey structured around six domains of the Maslach Burnout Theory (workload, control, reward, community, fairness, values) was distributed to wellness stakeholders at two institutions. Participants identified factors that may be implicated in resident wellness and burnout. Two subsequent multiple-choice survey iterations were distributed to stakeholders who …

Treatment And Outcomes Of Soft Tissue Sarcoma Of Groin, Hip And Thigh: A Retrospective Review From A Tertiary Care Hospital, Masood Umer, Javeria Saeed, Zaid Ahmed Shamsi, Muhammad Usman Tariq

Section of Orthopaedic Surgery

Objective: To study the frequency of the thigh, hip and groin soft tissue sarcomas and retrospectively analyse the management, treatment results, and outcomes of these uncommon malignant tumours, in a tertiary care hospital of the city of Karachi.
Methodology: Data of soft tissue tumours registered from 2017-2018 was retrieved during January 2019 to March 2019 from Aga Khan University Hospital, Karachi bone and soft tissue tumour registry. A retrospective review was performed and all soft tissue tumour cases treated with surgical intervention (with adjuvant /neoadjuvant therapy) or palliative intention were included.
Results: Total 119 cases of soft tissue tumours (STS) …

Prevention Of Falls In Hospital: Audit Report From A Tertiary Care Hospital Of Pakistan, Anum Sadruddin Pidani, Tashfeen Ahmad, Nasreen Panjwani, Shahryar Noordin

Department of Surgery Docs

Objective: The study aims to assess the fall incidents in past 5 years and fall assessment practices at the Aga Khan University Hospital, Karachi.
Methods: We performed a single-center retrospective audit at Aga Khan University Hospital from October 2019 to December 2019. A list of all patients admitted to Aga Khan University Hospital under the Musculoskeletal and Sports Medicine Service Line was obtained using the Hospital Information Management System (HIMS) from Jan 2017 to June 2018. Data including fall assessment scores was collected retrospectively from medical record files.
Results: A total of 1499 patients were admitted during this time period, …

Concurrent Primary Cardiac Tumors In A High-Risk Patient Presenting With Tamponade., Jay V Gopal, Lauren Crowley, Shawn M Quinn, Timothy S Misselbeck, Joseph B Zackary

Department of Emergency Medicine

Primary cardiac tumors are rare, particularly in the elderly population. The patient described in this report presented with symptoms of dyspnea on exertion, leg swelling, and weight gain and was found to have two histologically distinct cardiac masses: atrial myxoma with concurrent aortic fibroelastoma. Given her history of cirrhosis and end-stage renal disease, the patient was a poor surgical candidate but opted for excision of both masses. The patient eventually succumbed to her cirrhosis six weeks after presentation. In this report, we advocate for further research into medical management for the unique presentation of concurrent primary cardiac tumors in high-operative-risk …

Synchronous Primary Diffuse Large B-Cell Lymphoma And Papillary Thyroid Carcinoma: A Case Report Highlighting "Lymphoma First Approach", Rahim Dhanani, Ambreen Abdullah Unar, Muhammad Hassan Danish, Hamdan Ahmed Pasha, Ummiya Tahir, Mubasher Ikram

Section of Otolaryngology, Head & Neck Surgery

Papillary thyroid carcinoma (PTC) is the most common type of all thyroid carcinomas and accounts for up to 90% of all thyroid malignancies. It is the most indolent form of the disease and has an excellent prognosis. On the other hand, Primary thyroid lymphoma (PTL) is a rare entity accounting for only about 1% to 5% of all thyroid malignancies and only 2% of extranodal lymphomas. Synchronous PTC and PTL is a very rare condition and only a few cases have been reported in the literature up till now. We report one such case in a 52-year-old lady who was …

The Effect Of Patient Age In Progression To A Hemorrhoidectomy, Justin Yoon, William Sangster

Research Scholars

No abstract provided.

Angiovac Outcome Analysis In Tricuspid Valve Endocarditis, Maya Parekh, James K. Wu Md

Research Scholars

No abstract provided.

Is There A Difference Between Burn Patients Treated With Topical Mafenide Acetate Before And During Covid-19?, Morgan Anderson, Sigrid A. Blome-Eberwein Md

Research Scholars

No abstract provided.

Evaluating Patient Outcomes Following Redo Sternotomies In Cardiac Surgery, Sajan Patel, James K. Wu Md

Research Scholars

No abstract provided.