Timothy R. Spencer

ORCID: 0000-0002-3128-2034
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About
Contact & Profiles
Research Areas
  • Central Venous Catheters and Hemodialysis
  • Vascular Procedures and Complications
  • Hemodynamic Monitoring and Therapy
  • Patient Safety and Medication Errors
  • Coronary Interventions and Diagnostics
  • Ultrasound in Clinical Applications
  • Venous Thromboembolism Diagnosis and Management
  • Cardiac Imaging and Diagnostics
  • Ultrasound Imaging and Elastography
  • Retinal Imaging and Analysis
  • Retinal Diseases and Treatments
  • Cardiovascular Disease and Adiposity
  • Cerebrovascular and Carotid Artery Diseases
  • Acute Kidney Injury Research
  • Cardiac Arrest and Resuscitation
  • Mechanical Circulatory Support Devices
  • Ultrasound and Hyperthermia Applications
  • Radiomics and Machine Learning in Medical Imaging
  • Photoacoustic and Ultrasonic Imaging
  • Infection Control in Healthcare
  • Intravenous Infusion Technology and Safety
  • Chemotherapy-related skin toxicity
  • Antibiotics Pharmacokinetics and Efficacy
  • Airway Management and Intubation Techniques
  • Gastric Cancer Management and Outcomes

Access to Wholistic and Productive Living Institute
2016-2022

University Hospitals Bristol NHS Foundation Trust
2020-2022

UNSW Sydney
2008-2021

University Hospitals Bristol and Weston NHS Foundation Trust
2021

Vitalant
2017-2021

Hamad Medical Corporation
2021

University Hospital Leipzig
2021

Children's Hospital
2021

Spencer Foundation
2021

Cheltenham General Hospital
2018

Thrombosis of coronary arteries is a condition responsible for many acute syndromes. The ability to categorise thrombus belonging distinct pathological groups, would contribute the understanding pathophysiologic structure individual lesions, as well making significant contribution treatment choice. Here, authors investigate use statistical texture analysis techniques assess 30 MHz intravascular ultrasound (IVUS) data, in raw and scan-converted form, characterise intracoronary thrombus. Three...

10.1109/icip.1996.560490 article EN 2002-12-24

To report procedural characteristics and outcomes from a central venous catheter placement service operated by advanced practice nurses.Single-center observational study.A tertiary care university hospital in Sydney, Australia.Adult patients the general wards critical areas receiving catheter, peripherally inserted high-flow dialysis or midline for parenteral therapy between November 1996 December 2009.None.Prevalence rates indication, site, type were assessed. Nonparametric tests used to...

10.1097/ccm.0b013e3182a667f0 article EN Critical Care Medicine 2013-10-21

<h3>Objective</h3> To determine whether spectral analysis of unprocessed radiofrequency (RF) signal offers advantages over standard videodensitometric in identifying the morphology coronary atherosclerotic plaques. <h3>Methods</h3> 97 regions interest (ROI) were imaged at 30 MHz from postmortem, pressure perfused (80 mm Hg) arteries saline baths. RF data digitised 250 MHz. Two different sizes ROI identified scan converted images, and relative amplitudes frequency components analysed raw...

10.1136/hrt.79.5.459 article EN Heart 1998-05-01

MR imaging of pituitary adenoma: CT, clinical, and surgical correlationPC Davis, JC Hoffman, Jr, T Spencer, GT Tindall IF BraunAudio Available | Share

10.2214/ajr.148.4.797 article EN American Journal of Roentgenology 1987-04-01

Background Venous access devices (VADs) play a vital role within the neonatal intensive care unit. However, there are significant risks associated with use of VADs, complications such as infection, thrombosis, device occlusion, and infiltration/extravasation frequently contributing to device-related failures increasing risk patient harm or injury. This study aimed explore relationships between factors different venous in setting, then that evidence develop an algorithm based on observational...

10.3389/fped.2022.980725 article EN cc-by Frontiers in Pediatrics 2022-11-03

Evidence-based insertion and maintenance strategies for neonatal vascular access devices (VAD) exist to reduce the causes of VAD failure complications in neonates. Peripheral intravenous catheter including, infiltration, extravasation, phlebitis, dislodgement with/without removal, infection are majorly influenced by securement methods.

10.1177/11297298231154629 article EN cc-by-nc The Journal of Vascular Access 2023-02-16

Abstract Aim and objectives: The aim of this paper was to review published manuscripts on the use midline catheters, implications study findings recommendations for clinical practice in acute care setting. Design: Modified integrative literature Methods: Using key MeSH terms, we searched electronic databases: CINAHL, Medline, Embase. Cochrane Joanna Briggs databases, Google Search Engine reference lists materials were also searched. Studies included if they English language reported...

10.2309/java.16-1-5 article EN Journal of the Association for Vascular Access 2011-03-01

Background: To evaluate novice and expert clinicians’ procedural confidence utilizing a blended learning mixed fidelity simulation model when applying standardized ultrasound-guided central venous catheterization curriculum. Methods: Simulation-based education catheter insertion aims to provide facility-wide efficiencies improves patient safety through interdisciplinary collaboration. The objective of this quality improvement research was both (&lt;50) (&gt;50) across 100 courses were...

10.1177/1129729819882602 article EN The Journal of Vascular Access 2019-11-06

Within every neonatal clinical setting, vascular access devices are considered essential for administration of fluids, nutrition, and medications. However, use is not without danger failure. Catheter securement adhesives being evaluated among adult populations, but to date, studies in settings scant.This research describes the prevalence peripherally inserted central catheter failure related before after introduction tissue adhesive securement. The identified modifiable risks might be used...

10.1097/anc.0000000000000963 article EN Advances in Neonatal Care 2021-05-27
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