Open Access. Powered by Scholars. Published by Universities.®
Analytical, Diagnostic and Therapeutic Techniques and Equipment Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Medical Specialties (12)
- Anesthesia and Analgesia (7)
- Anesthesiology (7)
- Diseases (5)
- Life Sciences (4)
-
- Physiology (4)
- Anatomy (3)
- Biochemistry, Biophysics, and Structural Biology (3)
- Bioinformatics (3)
- Engineering (3)
- Health Information Technology (3)
- Other Analytical, Diagnostic and Therapeutic Techniques and Equipment (3)
- Surgery (3)
- Surgical Procedures, Operative (3)
- Systems and Integrative Physiology (3)
- Biomedical Engineering and Bioengineering (2)
- Cardiovascular Diseases (2)
- Congenital, Hereditary, and Neonatal Diseases and Abnormalities (2)
- Mechanical Engineering (2)
- Acoustics, Dynamics, and Controls (1)
- Applied Mechanics (1)
- Bioethics and Medical Ethics (1)
- Cardiology (1)
- Cardiovascular System (1)
- Clinical Psychology (1)
- Communication Sciences and Disorders (1)
- Curriculum and Instruction (1)
- Diagnosis (1)
- Institution
- Keyword
-
- Humans (4)
- Acoustic Emission (2)
- Aged (2)
- Bone (2)
- Female (2)
-
- Microdamage (2)
- Adult (1)
- Algorithms (1)
- Analysis (1)
- Benchmark 8F (1)
- Brain damage -- Computer simulation (1)
- Breast (1)
- Breast neoplasms (1)
- Carcinoma (1)
- Cardiac (1)
- Cholecystitis (1)
- Clinical trials -- Computer simulation (1)
- Computer-assisted (1)
- Death (1)
- Death, Sudden, Cardiac (1)
- Defibrillators (1)
- Defibrillators, Implantable (1)
- Diagnosis, Differential (1)
- Ductal (1)
- Fontan Procedure (1)
- Health care essentials (1)
- Heart Failure (1)
- Heart Transplantation (1)
- Hemoglobins (1)
- Hernia (1)
Articles 1 - 20 of 20
Full-Text Articles in Analytical, Diagnostic and Therapeutic Techniques and Equipment
Analysis Of Indentation Loading Of Cortical Bone Using Acoustic Emission Techniques, Ashkan Safari, Ger Reilly, Brendan Mccormack
Analysis Of Indentation Loading Of Cortical Bone Using Acoustic Emission Techniques, Ashkan Safari, Ger Reilly, Brendan Mccormack
Conference Papers
In this study, we recorded the number of Acoustic emission (AE) hits and related AE energy during indentation fracture of cortical bone using a PAC PCI-2 card and pico sensor. A threshold value of 43dB was used to filter premature trigger due to background noise. Registered AE hits had more than one count (threshold crossing). Amplifier gain was set at 40dB with a (0.1-1) MHz band pass filter. 8mm cubes of cortical bones were indented in the longitudinal direction at constant crosshead speed of 1 mm min-1 using a large 2D, 50˚ wedge indenter. We hypothesised that signals occurring as …
Retrospective Review Of The Use Of Swan Ganz Catheters In Our Intensive Care Unit (Icu): A Short Report, Shahla Siddiqui
Retrospective Review Of The Use Of Swan Ganz Catheters In Our Intensive Care Unit (Icu): A Short Report, Shahla Siddiqui
Department of Anaesthesia
The widespread and often 'misuse' of the Swan Ganz (SG) or Pulmonary artery catheter has often been seen in intensive care patients. The objective of this preliminary review was to observe the trends and possibly formulate an association with outcome of the use of SG catheters as well as to determine the frequency of use and possible complications. The chart review of ten patients was carried out for the months of January and February 2004 in a retrospective manner. The incidence of SG catheter insertion was 12% per month on average. Nine out of 10 patients received the SG catheters …
Cardiac Transplant Following Failed Fontan Or Glenn Procedures., Naveen L. Pereira, Girish S. Shirali
Cardiac Transplant Following Failed Fontan Or Glenn Procedures., Naveen L. Pereira, Girish S. Shirali
Manuscripts, Articles, Book Chapters and Other Papers
No abstract provided.
Near-Infrared Characterization Of Breast Tumors In Vivo Using Spectrally-Constrained Reconstruction, Subhadra Srinivasan, Brian W. Pogue, Ben Brooksby, Shudong Jiang, Hamid Dehghani, Christine Kogel, Wendy A. Wells, Steven P. Poplack, Keith D. Paulsen
Near-Infrared Characterization Of Breast Tumors In Vivo Using Spectrally-Constrained Reconstruction, Subhadra Srinivasan, Brian W. Pogue, Ben Brooksby, Shudong Jiang, Hamid Dehghani, Christine Kogel, Wendy A. Wells, Steven P. Poplack, Keith D. Paulsen
Dartmouth Scholarship
Multi-wavelength Near-Infrared (NIR) Tomography was utilized in this study to non-invasively quantify physiological parameters of breast tumors using direct spectral reconstruction. Frequency domain NIR measurements were incorporated with a new spectrally constrained direct chromophore and scattering image reconstruction algorithm, which was validated in simulations and experimental phantoms. Images of total hemoglobin, oxygen saturation, water, and scatter parameters were obtained with higher accuracy than previously reported. Using this spectral approach, in vivo NIR images are presented and interpreted through a series of case studies (n=6 subjects) having differing abnormalities. The corresponding mammograms and ultrasound images are also evaluated. Three of six …
Detection Of Microcracks During Bone Cutting Using Acoustic Emission Techniques, Ashkan Safari, Ger Reilly, Brendan Mccormack
Detection Of Microcracks During Bone Cutting Using Acoustic Emission Techniques, Ashkan Safari, Ger Reilly, Brendan Mccormack
Conference Papers
Surgeons may use a number of cutting instruments such as osteotomes and chisels to cut bone during operative procedures. The initial loading of cortical bone during the cutting process results in the formation of microcracks in the vicinity of the cutting zone with main crack propagation to failure occurring with continued loading; microcracking acts as a stimulus for main crack formation and has also been shown to occur during the propagation of the main crack. It has also been reported that Acoustic Emission (AE) is generated due to microcrack formation and crack growth, prior to, and during final fracture in …
Charge-Switch Nucleotides, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
Charge-Switch Nucleotides, John G. K. Williams, Gregory R. Bashford, Jiyan Chen, Dan Draney, Nara Narayanan, Bambi L. Reynolds, Pamela Sheaff
Biomedical Imaging and Biosignal Analysis Laboratory
The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation Without interference from unincorporated NPs and Without illuminating the polymerase-DNA complex.
Prevention Of Deep Vein Thrombosis And Pulmonary Embolism In The Perioperative Period: A Review, Aliya Ahmed
Prevention Of Deep Vein Thrombosis And Pulmonary Embolism In The Perioperative Period: A Review, Aliya Ahmed
Department of Anaesthesia
No abstract provided.
Unanticipated Hospital Admission After Ambulatory Surgery, Mueenullah Khan, Aliya Ahmed, Laila Abdullah, Azmeena Nizar, Aslam Fareed, Fauzia Anis Khan
Unanticipated Hospital Admission After Ambulatory Surgery, Mueenullah Khan, Aliya Ahmed, Laila Abdullah, Azmeena Nizar, Aslam Fareed, Fauzia Anis Khan
Department of Anaesthesia
The unplanned admission rate is considered to be an important measure of the quality of ambulatory surgical units. The objective of our study was to evaluate the unanticipated hospital admission rate from the Surgical Day Care (SDC) unit of our university affiliated teaching hospital and to analyze the reasons for admission. A review of all unanticipated admissions over a one-year period was done. The admission rate was calculated and the reasons for admission were analysed. The overall admission rate was 4.93%. Most of the admissions were ordered by the surgeons (97%). The main reasons for admission were patient observation indicated …
Apache Ii Score As A Predictor Of Length Of Stay And Outcome In Our Icus, Shahla Siddiqui, Saad Ahmed, Roshan Manasia
Apache Ii Score As A Predictor Of Length Of Stay And Outcome In Our Icus, Shahla Siddiqui, Saad Ahmed, Roshan Manasia
Department of Anaesthesia
The APACHE II (acute physiology and chronic health evaluation) is used widely for predicting probability of hospital mortality and length of stay in the ICU. APACHE II forms were available to all ICU residents within 24 hours of admission, and a score was assigned to them. Based on our results the APACHE II score has reliably predicted an outcome of the least amount of length of stay (LOS) in the ICU as well as a 100% probability of being shifted out of the ICU for a score of < 10 (according to international benchmarks). This reliable scoring system can be used for predicting mortality and length of stay and therefore, resource allocation, antibiotic use and ethical decisions regarding counseling families about end of life decisions--all within 24 hours of admissions.
Perioperative Anaesthetic Management Of A Patient With Relapsed Aplastic Anaemia, Aliya Ahmed, Abdul Monem
Perioperative Anaesthetic Management Of A Patient With Relapsed Aplastic Anaemia, Aliya Ahmed, Abdul Monem
Department of Anaesthesia
Aplastic anaemia occurs due to failure of blood cell production by bone marrow. All blood cell counts are low. Untreated patients may die within one year mainly due to uncontrolled infection due to neutropenia. Anaemia and thrombocytopenia cause troublesome symptoms and necessitate frequent red cell and platelets transfusions. Surgery poses a very high risk for these patients because of the several complications that can occur in the perioperative period. In this paper we report on a patient with relapsed aplastic anaemia who was optimized preoperatively and underwent a total abdominal hysterectomy under general anaesthesia.
Tracking The Time To Recovery After Induced Loudness Reduction (L), Yoav Arieh, Karen Kelly, Lawrence E. Marks
Tracking The Time To Recovery After Induced Loudness Reduction (L), Yoav Arieh, Karen Kelly, Lawrence E. Marks
Department of Psychology Faculty Scholarship and Creative Works
In induced loudness reduction (ILR), a strong tone causes the loudness of a subsequently presented weak tone to decrease. The aim of the experiment was to determine the time required for loudness to return to its initial level after ILR. Twenty-four subjects were exposed to 5, 10, 20, or 40 brief bursts of 2500-Hz pure tones at 80-dB SPL (inducers) and then tested in a series of paired comparison trials. Subjects compared the loudness of a weak target (2500 Hz at 60-dB SPL) to the loudness of a comparison tone at 500 Hz previously judged to match the target. The …
Nucleic Acid Sequencing Using Charge-Switch Nucleotides, John G. K. Williams, Gregory R. Bashford
Nucleic Acid Sequencing Using Charge-Switch Nucleotides, John G. K. Williams, Gregory R. Bashford
Biomedical Imaging and Biosignal Analysis Laboratory
The present invention provides compounds, methods and systems for sequencing nucleic acid using single molecule detection. Using labeled NPs that exhibit charge-switching behavior, single-molecule DNA sequencing in a microchannel sorting system is realized. In operation, sequencing products are detected enabling real-time sequencing as successive detectable moieties flow through a detection channel. By electrically sorting charged molecules, the cleaved product molecules are detected in isolation without interference from unincorporated NPs and without illuminating the polymerase-DNA complex.
Surgical Images: Soft Tissue. Incarcerated Gallbladder In A Parastomal Hernia., Shawn D. St Peter, Jacques Heppell
Surgical Images: Soft Tissue. Incarcerated Gallbladder In A Parastomal Hernia., Shawn D. St Peter, Jacques Heppell
Manuscripts, Articles, Book Chapters and Other Papers
No abstract provided.
Knowledge, Attitude And Practice Of Parturients Regarding Epidural Analgesia For Labour In A University Hospital In Karachi, Mohammed Raheel Minhas, Rehana Kamal, Gauhar Afshan, Hafsa Raheel
Knowledge, Attitude And Practice Of Parturients Regarding Epidural Analgesia For Labour In A University Hospital In Karachi, Mohammed Raheel Minhas, Rehana Kamal, Gauhar Afshan, Hafsa Raheel
Department of Anaesthesia
Objective: To assess the knowledge, sources of knowledge, attitude (fears and misconceptions) regarding Epidural Analgesia (EA) and practices of parturients delivery at Aga Khan University hospital (AKUH).Methods: A hospital based cross sectional study was conducted at the obstetric unit of AKUH, from November to December 2003. A questionnaire was filled through verbal interviews conducted on 448 parturients fulfilling the inclusion criteria.Results: Seventy six percent of the females were aware of epidural analgesia as a labor pain relieving method. However, only 19% availed EA. About 40% had heard about EA from their obstetricians and 64% from friends or relatives. Twenty even …
Imposed Constraints On The Smith-Waterman Alignment Algorithm For Enhanced Modeling Of A Single-Molecule Dna Sequencer, Patrick G. Humphrey, Gregory R. Bashford
Imposed Constraints On The Smith-Waterman Alignment Algorithm For Enhanced Modeling Of A Single-Molecule Dna Sequencer, Patrick G. Humphrey, Gregory R. Bashford
Biomedical Imaging and Biosignal Analysis Laboratory
An effort has been underway to develop a system for de novo sequencing of single DNA molecules with very long reads. The system operates by optically detecting the passage of fluorescently tagged DNA bases through a detection zone. A successful system would be revolutionary with respect to speed, read length, cost and minimized laboratory infrastructure. An important part of system development is modeling of the detection process. In particular, predicting the expected error from a set of sequencing parameters is helpful in system design. This paper describes variations on the Smith-Waterman algorithm for subsequence alignment used in a single-molecule detection …
Medical Technology: Contexts And Content In Science And Technology, Michael A. De Miranda, Mark Doggett, Jane T. Evans
Medical Technology: Contexts And Content In Science And Technology, Michael A. De Miranda, Mark Doggett, Jane T. Evans
Architectural and Manufacturing Sciences Faculty Publications
No abstract provided.
Prophylactic Defibrillator Implantation—Toward An Evidence-Based Approach, Alan H. Kadish
Prophylactic Defibrillator Implantation—Toward An Evidence-Based Approach, Alan H. Kadish
Office of the President Publications and Research
The author discusses research on using implantable cardioverter-defibrillators for the primary prevention of sudden death.
Implantable Cardioverter–Defibrillators: Reply, Alan H. Kadish
Implantable Cardioverter–Defibrillators: Reply, Alan H. Kadish
Office of the President Publications and Research
The author replies to comments on a previously published article discussing implantable cardioverter-defibrillators.
Estimation Of Subject Specific Icp Dynamic Models Using Prospective Clinical Data, Wayne W. Wakeland, Joe Fusion, B. Goldstein
Estimation Of Subject Specific Icp Dynamic Models Using Prospective Clinical Data, Wayne W. Wakeland, Joe Fusion, B. Goldstein
Systems Science Faculty Publications and Presentations
We used a prospective clinical trial to generate physiologic data to create subject-specific in silico (computer simulation) models of intracranial pressure dynamics in children with severe traumatic brain injury. The trial included a physiologic challenge protocol with changes in head-of-bed elevation and minute ventilation, applied over multiple iterations to three subjects. Physiologic signals (electrocardiogram, respiration, arterial blood pressure, intracranial pressure [ICP], oxygen saturation) were recorded continuously, along with clinical annotations indicating the precise timing of physiologic challenges. Several parameters within the model of ICP dynamics were estimated for each subject based on the ICP response to the challenges. Estimation was …
Drug Related Critical Incidents, F A. Khan, M Q. Hoda
Drug Related Critical Incidents, F A. Khan, M Q. Hoda
Department of Anaesthesia
Drug related incidents are a common form of reported medical errors. This paper reviews the critical incidents related to drug errors reported from the main operating theatre suite in a teaching hospital in a developing country from January 1997 to December 2002. Each report was evaluated individually by two reviewers using a structured process. During this period, 44 874 anaesthetics were administered; 768 critical incidents were reported, 165 (21%) of which were related to drug errors. Underdosage, side-effect/drug reaction and syringe swap were the most common. A total of 76% were classified as preventable; 56% due to human error and …