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Abduo J, Lau D. Accuracy of Static Computer- Assisted Implant Placement in Posterior Edentulous Areas with Different Levels of Tooth- Support by Novice Clinicians. Eur J Prosthodont Restor Dent 2023; 31:373-382. [PMID: 37191579 DOI: 10.1922/ejprd_2494abduo10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/21/2023] [Indexed: 05/17/2023]
Abstract
Correct implant placement is necessary for satisfactory implant restoration. Therefore, the use of surgical guide is recommended. This study evaluated the accuracy of implant placement in posterior edentulous areas with different levels of tooth-support by novice clinicians according to fully-guided (FG), pilot-guided (PG), and freehand (FH) placement protocols. A mandibular model with missing first molars was designed. On one side, the model had a bound edentulous area (BEA), and on the other side, a free end edentulous area (FEA). Fourteen clinicians new to implant dentistry participated in the study, and each clinician inserted an implant in the BEA and FEA sites for every placement protocol. Angle, vertical and maximum horizontal platform and apex deviations were measured. The FG placement was more accurate than the PG and FH placements. This was significant for BEA angle deviation, BEA and FEA maximum horizontal platform deviations, and BEA maximum horizontal apex deviation. The PG placement was significantly more accurate than the FH placement for BEA and FEA maximum horizontal platform deviations. FG shows significantly greater angle, maximum horizontal platform and maximum horizontal apex deviations at FEA than BEA. This can be attributed to reduced guide support and the possibility of guide displacement during surgery.
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Affiliation(s)
- J Abduo
- Melbourne Dental School, Melbourne University, 720 Swanston Street, Melbourne, Victoria 3010
| | - D Lau
- Melbourne Dental School, Melbourne University, 720 Swanston Street, Melbourne, Victoria 3010
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2
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Xayachak T, Haque N, Lau D, Emami N, Hood L, Tait H, Foley A, Pramanik BK. White spill: Life cycle assessment approach to managing marine EPS litter from flood-released pontoons. Chemosphere 2023; 337:139400. [PMID: 37406937 DOI: 10.1016/j.chemosphere.2023.139400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 06/22/2023] [Accepted: 06/30/2023] [Indexed: 07/07/2023]
Abstract
Expanded polystyrene (EPS) pollution in the marine environment is a pressing issue in Queensland, Australia due to a recent flood that scattered hundreds of EPS-containing pontoons along the coastline, causing severe ecological damage. To assist in the clean-up effort and provide crucial data for developing management guidelines, this study investigates the environmental performance of different end-of-life (EoL) disposal/recycling methods, including (i) landfill; (ii) on-site mechanical re-processing using a thermal densifier (MR); and (iii) on-site dissolution/precipitation using d-limonene (DP). Applying the life cycle assessment framework, the results showed that DP was the most environmentally favourable option. Its impacts in climate change (GWP), acidification (TAP), and fossil fuel depletion (FFD) were 612 kg CO2 eq, 4.3 kg SO2 eq, and 184.7 kg oil eq, respectively. For comparison, the impacts of landfilling EPS in these categories were found to be 700 kg CO2 eq, 3.5 kg SO2 eq, and 282 kg oil eq, respectively. Landfill also contributed considerably to eutrophication potential (MEP), at 3.77 kg N eq. Impacts from MR were most significant due to the need to transport the densifier unit to the site. The analysis also revealed that the transportation of personnel and heavy machinery to the site, was the biggest contributor to impacts in the EoL stage. Its impacts in GWP, TAP, MEP, and FFD were 1369.8 kg CO2 eq, 6.5 kg SO2 eq, 0.2189 kg N eq, and 497.7 kg oil eq, respectively. Monte Carlo analysis showed that the conclusions made from these results were stable and reliable. Limitations of this model and recommendations for future investigations were also discussed in this work.
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Affiliation(s)
- Tu Xayachak
- School of Engineering, RMIT University, VIC, 3001, Australia
| | - Nawshad Haque
- CSIRO Mineral Resources, Clayton South, Melbourne, VIC, 3169, Australia
| | - Deborah Lau
- CSIRO Manufacturing, Private Bag 10, Clayton South, VIC, 3169, Australia
| | - Nargessadat Emami
- CSIRO Land & Water, Black Mountain Science & Innovation Park, Acton, ACT, 2601, Australia
| | - Lincoln Hood
- Tangaroa Blue Foundation, Dunsborough, WA, 6281, Australia
| | - Heidi Tait
- Tangaroa Blue Foundation, Dunsborough, WA, 6281, Australia
| | - Alison Foley
- Ten Little Pieces, Sunshine Coast, QLD, Australia
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3
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Lau D, Shaw E, McMullen S, Cowling T, Witges K, Amitay E, STEUBL D, Girard L. WCN23-0604 ACUTE AND CHRONIC COMPLICATION PROFILES AMONG PATIENTS IDENTIFIED WITH CHRONIC KIDNEY DISEASE IN ALBERTA, CANADA. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023] Open
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4
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Kennedy LP, Reddy RK, Health KM, Pitman BP, Hnin K, De Voir C, Whittington H, Lau D. Accurate respiratory rate determination using a novel insertable cardiac monitor algorithm: implications for diagnostic and monitoring potentials beyond heart rhythm disorders. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Respiratory rate (RR) is a critical vital sign that is highly relevant in patients with cardiopulmonary disorders. The implantable cardiac monitor (ICM) provides useful data pertaining to heart rhythm, but little is known up to this point regarding its potential diagnostic value in the direct measurement of respiratory parameters. The addition of respiration information could improve understanding of overall health status of heart rhythm patients with ICM.
Objective
The primary objective of this study was to evaluate the accuracy of the RR detected by an existing implanted ICM as compared to gold-standard polysomnography (PSG) measurement of respiration.
Methods
This prospective single center study enrolled 25 patients (17 male, 62.7±12.2 yesrs) with an implanted ICM and suspected sleep-disordered breathing. The ICM was custom configured with research software to collect respiration data (Fig. 1). Simultaneous, time-synchronized PSG and ICM data were evaluated in two-minute epochs episodically during the night. The offline novel prototype RR algorithm was evaluated on episodes collected by the ICM and compared against expert manual adjudicated RR from PSG by two separate investigators. The interobserver agreement was assessed using intraclass correlation coefficient (ICC). The performance of the novel algorithm was assessed using Bland-Altman analysis with 95% limits of agreement (LOA).
Results
A total of 495 epochs were graded by two independent observers, with good ICC of 0.83 (95% C.I. 0.79–0.86). Epochs free of severe sleep disordered breathing/apnea (n=363) were included in this analysis with 106 of these containing periods of hypopnea. The development and validation datasets were comprised of 235 and 128 epochs, respectively. In the development data, the mean RR was 14.99±3 breaths per minute, and the mean RR was 13.44±2 breaths per minute in the test data. Using Bland-Altman analysis, the bias for the novel prototype algorithm was only −0.13 and +0.32 breaths per minute with 95% LOA of −2.24 to +1.98 and −2.56 to +3.19 breaths per minute (Fig. 2), in the in the development and test dataset respectively.
Conclusion
The novel prototype algorithm applied to the ICM data provided accurate determination of respiratory rate as compared to gold-standard PSG data. The capability to determine respiratory rate accurately from an existing ICM platform demonstrates the potential to extend the diagnostic power of ICMs beyond heart rhythm abnormalities to address a broad range of comorbidities including breathing disorders and heart failure.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- L P Kennedy
- Royal Adelaide Hospital , Adelaide , Australia
| | - R K Reddy
- BIOTRONIK Inc , Lake Oswego , United States of America
| | - K M Health
- Royal Adelaide Hospital , Adelaide , Australia
| | - B P Pitman
- Royal Adelaide Hospital , Adelaide , Australia
| | - K Hnin
- Norwood Specialist Clinic , Adelaide , Australia
| | - C De Voir
- BIOTRONIK Inc , Lake Oswego , United States of America
| | - H Whittington
- BIOTRONIK Inc , Lake Oswego , United States of America
| | - D Lau
- Royal Adelaide Hospital , Adelaide , Australia
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Saw S, Tan A, Chen J, Lai G, Hlaing N, Takano A, Lau D, Yeong J, Lim K, Skanderup A, Chan J, Teh Y, Rajasekaran T, Jain A, Tan W, Ng Q, Kanesvaran R, Lim WT, Tan E, Ang MK, Tan D. EP16.03-036 Clinical and Genomic Features of HER2 exon 20 Insertion Mutations in East Asian NSCLC. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.1097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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6
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Proud D, Datta D, Ketchell I, Douglas M, Manning DE, Addy C, Lau D, Duckers J. P160 “Seeing a trend” - increasing vitamin A levels on elexacaftor/tezacaftor/ivacaftor therapy. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00491-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Lau D, Speight L, Melindo F, Prosser A, Lee J, Addy C, Duckers J, Ketchell I. ePS4.03 Outcomes of COVID-19 in patients with cystic fibrosis in Wales, UK. J Cyst Fibros 2022. [PMCID: PMC9184778 DOI: 10.1016/s1569-1993(22)00311-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Taylor M, Lau D, Proud D. P092 Exploring the association between hand grip strength (HGS) and lung function (FEV1%) in cystic fibrosis: does HGS offer an insight into pulmonary function? J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)00425-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Pitman B, Lim M, Margaritis C, Mills N, Wong C, Sanders P, Lau D. Characterisation Of Implantable Cardioverter Defibrillator (ICD) Patients Receiving Elective In-hospital Palliative Device Deactivation. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Pitman B, Zanker A, Lim M, McLoughney J, Tarone R, McInnes K, Heath K, Gieve M, Evans S, Wong C, Sanders P, Lau D. Optimal Sensing Vector Orientation For Maximal R-Wave Amplitude, Implications for Insertable Cardiac Monitor (ICM) Implantation. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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11
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Langdon A, Seeley M, Gallagher C, Ong E, Slater P, Lau D. Gastrointestinal Dysfunction in Postural Orthostatic Tachycardia is Associated With Significantly Lower Health Related Quality of Life. Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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12
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Griffin A, Thiyagarajah A, Middeldorp M, Lau D, Sanders P. Incidence of new-onset atrial fibrillation after cavotricuspid isthmus ablation for isolated typical atrial flutter: a systematic review and meta-analysis. Europace 2021. [DOI: 10.1093/europace/euab116.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
There is a lack of consensus guidelines regarding the continuation of anticoagulant therapy following cavotricuspid isthmus (CTI) ablation for typical atrial flutter. This is despite a significant number of patients developing new-onset atrial fibrillation (AF) following the procedure. Furthermore, a summary of Kaplan-Meier estimates for drug-free, arrhythmia-free survival has never been reported.
Purpose
To estimate the incidence of drug-free, new-onset AF stratified by rhythm monitoring strategy in patients undergoing CTI ablation for isolated typical atrial flutter.
Methods
PubMed, Embase and MEDLINE databases were searched to identify relevant studies. Only studies where anti-arrhythmic drugs were discontinued post-ablation and that accounted for patient censoring by reporting results in the form of time to event data were included. Data was extracted from published Kaplan-Meier curves using a digitizing software and confidence intervals for the survivor function were estimated based on the number at risk at the time point of interest. Results were pooled in a random effects model using the DerSimonian-Laird estimator.
Results
Thirteen relevant studies incorporating 1712 patients (79 % male, mean age 63.2 +/-11.2 years, LVEF 55.2 +/-10.8%) were identified. The estimated freedom from new-onset atrial fibrillation was 89.7% (95% CI: 80.3-90.1%) at 1 year and 86.2% (95% CI: 78.4-94.0%) at 2 years in patients undergoing predominantly symptom –based monitoring, 74.6% (95%CI: 67.0-82.3%) at 1 year and 69.5% (95%CI: 63.5-75.6%) at 2 years in patients undergoing regular clinic follow-up with periodic Holter monitoring and 51.4% (95% CI: 41.8-61.0%) at 1 year and 22.7% (95% CI: 8.7% - 36.6%) at 2 years in patients with implantable loop recorders.
Conclusion
With the advent of implantable loop recorders, it is apparent that most patients with isolated atrial flutter manifest new-onset AF following CTI ablation and the merits of discontinuing anticoagulation must be carefully considered in this population. Symptom-based monitoring likely severely underestimates the incidence of new-onset AF and may lead to adverse outcomes, particularly in patients with a high risk of stroke.
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Affiliation(s)
- A Griffin
- Royal Adelaide Hospital, Cardiology, Adelaide, Australia
| | - A Thiyagarajah
- Royal Adelaide Hospital, Cardiology, Adelaide, Australia
| | - M Middeldorp
- Royal Adelaide Hospital, Cardiology, Adelaide, Australia
| | - D Lau
- Royal Adelaide Hospital, Cardiology, Adelaide, Australia
| | - P Sanders
- Royal Adelaide Hospital, Cardiology, Adelaide, Australia
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Deneke T, Mariani J, Cabanas P, Lau D, Gaspar T, Steffel J, Pierre B, Martens E, Sanfins VM, Schrader J, Bisignani G. Real-world experience with the insertion of a new implantable cardiac monitor. Europace 2021. [DOI: 10.1093/europace/euab116.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Private company. Main funding source(s): Biotronik SE & Co.KG
OnBehalf
BIO|CONCEPT.BIOMONITOR III study group, BIO|MASTER.BIOMONITOR III study group, BIO|STREAM-ICM study group
Background
Implantable Cardiac Monitors (ICM) provide continuous long-term heart rhythm monitoring. The new ICM BIOMONITOR III / IIIm (BM III) is provided with a single-step insertion tool.
Purpose
To report on the insertion procedure of the BM III in a large real-world patient population.
Methods
The BM III combines a low cross-section (4.5 x 8.5 mm) with an extended ICM length (77 mm, including flexible antenna). It is inserted into subcutaneous tissue with an ‘injection’ tool that forms the pocket and delivers the device in a single step. We report results of the insertion procedure from a pooled data set from the BIO|CONCEPT BM III (completed) and the BIO|MASTER BM III and BIO|STREAM-ICM (ongoing) studies.
Results
From 54 investigational sites in 11 countries, 455 insertions were reported (including 39 BM IIIm). The patients were 63 ± 16 years old, had a BMI of 27.6 ± 5.4, and 43% were women. The indications were syncope or pre-syncope (57%), cryptogenic stroke (23%), management of AF (11%) or other (9%). Insertions took 1.7 ± 1.8 minutes until removal of the insertion tool, 4.7 ± 3.4 minutes until wound closure, and 7.1 ± 5.6 minutes including wound cleaning. The wound was sutured (79%) or closed with staples (10%) or adhesive strips (10%). General anaesthesia was used in 8% of the patients and antibiotic prophylaxis in 50% (44% systemic and 6% local). Insertions took place in the catheter laboratory (62%), operating theatre (22%) or in a consultation room (16%) without specific precautional equipment.
The insertion site was parallel to the heart"s long axis (56%), parasternal (39%), in the 2nd/3rd intercostal space (3.5%), axillary (0.9%) or at the clavicula (0.7%). The device was repositioned in one case (0.2%). 13 adverse events were reported in connection to the insertion procedure. 5 cases of device pocket bleeding or hematoma occurred. In 5 further cases, the device migrated, posing the risk of extrusion, or actually extruded. Three of these cases used only adhesive strips or no wound closure at all. In two cases, an incorrect usage of the incision tool and substantial subcutaneous fatty tissue may have contributed. One device was damaged by a 200 J defibrillation shock with a shock electrode placed over the device. One patient suffered from dyspnoea, possibly due to psychogenic hyperventilation. One patient had a vasovagal syncope due to pain after an insertion with insufficient local anaesthesia. No infections were reported until the day of analysis, which was more than 30 days after insertion in 92% of all cases.
Conclusion
The new BM III was inserted in typically less than 5 minutes until wound closure. A relevant number of insertions took place in a consultation room. Prophylactic antibiotics may be unnecessary, because no pocket infections were reported, although no antibiotic prophylaxis was used in one half of all cases (N = 229). In summary, the insertion with the new tool is fast and has a low risk of complications.
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Affiliation(s)
- T Deneke
- Heart Center Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - J Mariani
- The Alfred Hospital, Melbourne, Australia
| | - P Cabanas
- University Hospital Alvaro Cunqueiro, Vigo, Spain
| | - D Lau
- Royal Adelaide Hospital, Adelaide, Australia
| | - T Gaspar
- University Hospital Dresden, Dresden, Germany
| | - J Steffel
- University Hospital Zurich, Zurich, Switzerland
| | - B Pierre
- University Hospital of Tours, Tours, France
| | - E Martens
- Klinikum rechts der Isar, Munich, Germany
| | - VM Sanfins
- Hospital Senhora da Oliveira - Guimaraes, Guimaraes, Portugal
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Verdicchio C, Elliott A, Mahajan R, Linz D, Lau D, Sanders P. Greater cardiorespiratory fitness reduces incidence of atrial fibrillation: a meta-analysis. Eur J Prev Cardiol 2021. [DOI: 10.1093/eurjpc/zwab061.200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Atrial Fibrillation (AF) is the most common sustained cardiac arrhythmia affecting 1-2% of the global population, with the prevalence of AF increasing dramatically over the past two decades. Although low levels of cardiorespiratory fitness (CRF) and physical activity are predictive of cardiovascular disease onset and mortality, only recently has this emerged as a potential risk factor for AF.
Purpose
The aim of this meta-analysis was therefore to quantify the relationship between CRF, measured by a symptom limited exercise stress test, and incident AF. We hypothesised that there would be an inverse relationship between CRF and the incidence of AF.
Methods
The systematic literature review was conducted using PUBMED, MEDLINE and EMBASE databases, with seven studies meeting the inclusion criteria. A random-effects meta-analysis was then used to compare the multivariate risk estimates of the lowest CRF group from each cohort with the group of the highest CRF.
Results
Data from 206,925 individuals (55.8% males) was used for analysis with a mean age of 55 ± 2.5 years and a mean follow-up period of 10.3 ± 5 years. The total number of AF events across the studies was 19,913. The overall pooled risk of AF in the high-CRF group versus the low-CRF group showed a significant lower risk of incident AF in those with high-CRF (OR: 0.52, 95% CI, 0.44-0.605, p < 0.001). There was evidence of statistical heterogeneity between the studies (I2 = 81%, p < 0.001). AF incidence rates demonstrated an overall decline in rates across the CRF quartiles from low to high. The mean incidence rate for low-CRF was 21 ± 13.4 compared to 6.9 ± 0.7 per 1000 person-years for the high CRF group (p = 0.03).
Conclusion
There is an inverse association between a lower CRF and an increased risk of AF, with a higher level of CRF protective against AF. This study highlights that low-CRF may be an additional risk factor for AF along with already other established lifestyle-based risk factors such as obesity and hypertension. Exercise interventions should be promoted as a primary prevention strategy in those at risk of developing AF with known risk factors. Future studies are warranted to identify the mechanism(s) through which improved CRF confers a reduction in AF incidence.
Abstract Figure. AF risk between high and low-CRF
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Affiliation(s)
- C Verdicchio
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - A Elliott
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - R Mahajan
- University of Adelaide, Adelaide, Australia
| | - D Linz
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - D Lau
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - P Sanders
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
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Tu S, Gallagher C, Elliott A, Linz D, Pitman B, Hendriks J, Lau D, Sanders P, Wong C. Alcohol Intake and Bradyarrhythmia Risk: A Cohort Study of 385,670 Individuals. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Griffin A, Thiyagarajah A, Lau D, Sanders P. Spontaneous Termination of Ventricular Fibrillation Captured on Implantable Loop Recorder. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Pitman B, Chew S, Wong C, Jaghoori A, Iwai S, Lyrtzis E, Lim M, Chew R, Chew A, Sanders P, Lau D. Atrial Fibrillation Prevalence and Risk Factors in a Semi-Rural African Population: Findings From the Australian-led TEFF-AF Study. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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18
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Malik V, Elliott A, Thomas G, Arnolda L, Lau D, Sanders P. Catheter Ablation of Atrial Fibrillation is Not Associated With Cardiac Volume-regulating Afferent Nerve Disruption. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Griffin A, Thiyagarajah A, Elliott A, Lau D, Sanders P. Incidence of New-Onset Atrial Fibrillation After Cavotricuspid Isthmus Ablation for Isolated Atrial Flutter: A Systematic Review and Meta-analysis. Heart Lung Circ 2021. [DOI: 10.1016/j.hlc.2021.06.149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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20
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Proud D, Tan L, Lau D, Ketchell R, Jones H, Rezaie M, Duckers J. P281 Body composition in adults with cystic fibrosis – are measurements taken using single frequency and multifrequency devices interchangeable? J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30611-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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21
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Proud D, Ketchell R, Lau D, Rezaie M, Lea-Davies M, Duckers J. P272 High dose vitamin D supplementation: the patient knows best. J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30604-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rattanakosit T, Franke K, Marshall H, Agbaedeng T, Sanders P, Lau D, Mahajan R. P1428The outcome of atrial fibrillation ablation in patients undergoing radiofrequency ablation, guided by novel indices incorporating force, time and power. Europace 2020. [DOI: 10.1093/europace/euaa162.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Ablation index (AI) and Lesion Size Index (LSI) are novel parameters that incorporates contact force, time, and power in a weighted formula. Recent studies have shown that such indices predict lesion size and durability of pulmonary vein isolation (PVI). However, the outcomes of ablation guided by indices of force-time-power, such as PV reconnections and atrial fibrillation recurrence, have not been well characterised.
Objectives
To determine the association between indices of force-time-power and acute PV reconnections, procedure and fluoroscopy time and AF recurrence in patients undergoing radiofrequency PVI.
Methods
PUBMED and EMBASE were searched using the terms "catheter ablation" AND "Ablation index" OR "Contact force" OR "Force time integral" OR "lesion size" from inception through 22 May 2019. Studies reporting the procedure time, ablation time, fluoroscopy time, and incidence of AI acute and late reconnection and AF recurrence were included.
Result
Six studies were included in this study with 530 patients, which n = 416 were paroxysmal AF and 114 non-paroxysmal AF. All procedural characteristics (procedure, radiofrequency, and fluoroscopy times) were similar between AI guided and non-AI guided ablation (p > 0.05). Two studies comparing mean PV reconnections in AI guided vs. AI Blinded. Two studies compared minimum AI in reconnected vs. non-reconnected PV segments. Acute PV segment reconnection was associated with a lower minimum AI vs. non-reconnection. In 3 studies reporting AI guided vs. AI blinded ablations, AI was associated with an increased freedom from AF after average follow-up of 12 months.
Conclusions
Radiofrequency ablation guided by AI/LSI was associated with lower acute PV reconnection rates and improved AF freedom after PVI. There was no difference in fluoroscopy, ablation or procedure time with the use of these novel parameters.
Abstract Figure.
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Affiliation(s)
- T Rattanakosit
- South Australian Health and Medical Research Institute, Centre of Heart Rhythm Disorder , Adelaide, Australia
| | - K Franke
- South Australian Health and Medical Research Institute, Centre of Heart Rhythm Disorder , Adelaide, Australia
| | - H Marshall
- South Australian Health and Medical Research Institute, Centre of Heart Rhythm Disorder , Adelaide, Australia
| | - T Agbaedeng
- South Australian Health and Medical Research Institute, Centre of Heart Rhythm Disorder , Adelaide, Australia
| | - P Sanders
- South Australian Health and Medical Research Institute, Centre of Heart Rhythm Disorder , Adelaide, Australia
| | - D Lau
- South Australian Health and Medical Research Institute, Centre of Heart Rhythm Disorder , Adelaide, Australia
| | - R Mahajan
- South Australian Health and Medical Research Institute, Centre of Heart Rhythm Disorder , Adelaide, Australia
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Wilson C, Ketchell I, Lau D, Goble P, Speight L, Duckers J. ePS2.07 Are women with cystic fibrosis at the All Wales Adult Cystic Fibrosis Centre attending for cervical screening? J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30297-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Tan L, Speight L, Lau D, Lea-Davies M, Jones H, Proud D, Duckers J. P211 Real-world experience of lumacaftor/ivacaftor combination in Welsh cystic fibrosis patients homozygous for the F508del CFTR mutation with severe lung disease. J Cyst Fibros 2020. [DOI: 10.1016/s1569-1993(20)30545-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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25
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Entis P, Bryant D, Bryant J, Bryant RG, Inami G, Cholensky JS, Garcia GR, Ramsey SM, Courtney T, Pruett WP, Dagdag EB, Davis-DeBella PE, San D, Humes LM, Lau D, Watson J, Erickson J, Hayes M, Ingham S, Sage J, Jirele K, Zuroski K, Kelley G, Lerner I, Patel DR, Peery DA, Simpso S, Zachary C. Direct 24-Hour Presumptive Enumeration of Escherichia coli 0157:H7 in Foods Using Hydrophobic Grid Membrane Filter Followed by Serological Confirmation: Collaborative Study. J AOAC Int 2020. [DOI: 10.1093/jaoac/81.2.403] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
abstract
Fifteen laboratories took part in a collaborative study to validate a method for enumerating Escherichia coli 0157:H7. The method is based on use of a hydrophobic grid membrane filter and consists of 24 h presumptive enumeration on SD-39 Agar and serological confirmation to yield a confirmed E. coli 0157:H7 count. Six food products were analyzed: pasteurized apple cider, pasteurized 2% milk, cottage cheese, cooked ground pork, raw ground beef, and frozen whole egg. The test method produced significantly higher confirmed count results than did the reference method for milk, pork, and beef. Test method results were numerically higher than but statistically equivalent to reference method results for cheese, cider, and egg. The test method produced lower repeatability and reproducibility values than did the reference method for most food/inoculation level combinations and values very similar to those of the reference method for the remaining combinations. Overall, 94% of presumptive positive isolates from the test method were confirmed serologically as E. coli 0157:H7, and 98% of these were also biochemically typical of E. coli 0157:H7 (completed test). Corresponding rates for the reference method were 69 and 98%, respectively. On the basis of the results of this collaborative study and the precollaborative study that preceded it, it is recommended that this method be adopted official first action for enumeration of E. coli 0157:H7 in meats, poultry, dairy foods, infant formula, liquid eggs, mayonnaise, and apple cider
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Affiliation(s)
- Phyllis Entis
- QA Life Sciences, Inc., 6645 Nancy Ridge Dr, San Diego, CA 92121
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26
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Clarke N, Gallagher C, Pitman B, Tu S, Hanna-Rivero N, Kangaharan N, Roberts-Thomson K, Lau D, Mahajan R, Sanders P, Wong C. 692 Anticoagulation Prescription for Indigenous and Non-Indigenous Patients With Atrial Fibrillation in Central Australia. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Clarke N, Gallagher C, Pitman B, Tu S, Hanna-Rivero N, Kangaharan N, Roberts-Thomson K, Lau D, Mahajan R, Sanders P, Wong C. 033 Age Discrepancy in Cardiometabolic Risk Factor Profiles in Indigenous and Non-Indigenous Australians With Atrial Fibrillation. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Rana K, Sabab A, Tu S, Hanna-Rivero N, Clarke N, Pitman B, Gallagher C, Mahajan R, Lau D, Sanders P, Wong C. 246 Prevalence and Prognostic Impact of Iron Deficiency Anaemia in Atrial Fibrillation. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Pitman B, Tarone R, Jones E, Kadhim K, Linz D, Roberts-Thomson K, Young G, Mariani J, Wong C, Sanders P, Lau D. 210 Does Length of Sensing Vector Matter on the Detection of P- and R- Wave Amplitude in Insertable Cardiac Monitors? Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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30
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Pitman B, Chew S, Wong C, Jaghoori A, Iwai S, Chew A, Sanders P, Lau D. 009 Performance of a Mobile Single-Lead Electrocardiogram Technology for Atrial Fibrillation Screening in a Semi-Rural African Population: Insights from the Australian Led TEFF-AF Study. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Santos CDRD, Sampaio MV, Lau D, Redaelli LR, Jahnke SM, Pivato J, Carvalho FJ. Taxonomic Status and Population Oscillations of Aphidius colemani Species Group (Hymenoptera: Braconidae) in Southern Brazil. Neotrop Entomol 2019; 48:983-991. [PMID: 31823153 DOI: 10.1007/s13744-019-00716-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Aphidius colemani (Viereck) was reported in Brazil before the Biological Control Program of Wheat Aphids (BCPWA) when Mediterranean genotypes were introduced from France and Israel. This species was re-described as a complex called A. colemani group composed of three species. Consequently, uncertainty remains about which parasitoid of the group is occurring in southern Brazil. This study has two main objectives: (i) re-examine the species status of A. colemani group collected during the introduction of parasitoids and from a 10-year (2009-2018) monitoring program in wheat fields in northern Rio Grande do Sul (RS), Brazil; (ii) describe the variation in the population density of parasitoids and its association with meteorological factors during this period. We examined 116 specimens from the Embrapa Wheat entomological collection, and those collected in Moericke traps in Coxilha, RS. All the parasitoids of the A. colemani group from the BCPWA period were identified as Aphidius platensis (Brèthes). In traps, 6541 cereal aphid parasitoids were collected, of which 61.9% (n = 4047) were from A. colemani group and all those were identified as A. platensis. Temperature was the factor that effected population density with the highest number of parasitoids recorded in the winter months. Sex ratio changed between years varying from 0.50 to 0.97. The parasitoid A. platensis was the only species in the A. colemani group sampled during 10 years of monitoring.
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Affiliation(s)
- C D R D Santos
- Posgraduate Program in Plant Science, Faculty of Agronomy, Federal Univ of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brasil.
| | - M V Sampaio
- Agricultural Sciences Institute, Federal Univ of Uberlândia (UFU), Uberlândia, Minas Gerais, Brasil
| | - D Lau
- Embrapa Tigo, Passo Fundo, Rio Grande do Sul, Brasil
| | - L R Redaelli
- Posgraduate Program in Plant Science, Faculty of Agronomy, Federal Univ of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brasil
| | - S M Jahnke
- Posgraduate Program in Plant Science, Faculty of Agronomy, Federal Univ of Rio Grande do Sul (UFRGS), Porto Alegre, Rio Grande do Sul, Brasil
| | - J Pivato
- Faculty of Agronomy, Passo Fundo Univ (UPF), Passo Fundo, Rio Grande do Sul, Brasil
| | - F J Carvalho
- Agricultural Sciences Institute, Federal Univ of Uberlândia (UFU), Uberlândia, Minas Gerais, Brasil
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32
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Silbernagel KM, Carver CN, Jechorek RP, Johnson RL, Alejo W, Aleo V, Buresh J, Cagri A, Campbell S, Carson M, Chinault K, Clayborn J, Cook F, Dammann H, Dorn S, Elko B, Farmer D, Farmer R, Gasses T, Greiman L, Guzman C, Hemker M, Hintz C, Jechorek R, Jenkins J, Kexel N, Kildisg J, Knickerbocker J, Kora L, Koziczkowski J, Krieg D, Lal A, Lam L, Lau D, Loftis M, Madewell L, Matisko V, Miele A, Muzzy T, Park J, Peters C, Pickett J, Radermacher S, Romero H, Ross J, Rotten J, Rule P, Ryser E, Satterwhite LK, Schultz A, Shell D, Smith J, Storment E, Ulmer M, Walia J, Whetzel S, Woltman N. Evaluation of VIDAS Listeria monocytogenes II (LMO2) Immunoassay Method for the Detection of Listeria monocytogenes in Foods: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/87.5.1123] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
A multilaboratory study was conducted to compare the VIDAS®Listeria monocytogenes II (LMO2) immunoassay and the standard cultural methods for the detection of Listeria monocytogenes in foods. Five food types—vanilla ice cream, brie cheese, cooked roast beef, frozen green beans, and frozen tilapia fish—at 3 levels were analyzed by each method. A total of 26 laboratories representing government and industry participated. In this study, 1404 test portions were analyzed of which 1152 were used in the statistical analysis. There were 448 positive by the VIDAS LMO2 assay and 457 positive by the standard culture methods. A χ2 analysis of each of the 5 food types, at the 3 inoculation levels tested, was performed. The resulting χ2 value, 0.36, indicates that overall, there are no statistical differences between the VIDAS LMO2 assay and the standard methods at the 5% level of significance.
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Silbernagel KM, Jechorek RP, Kaufer AL, Johnson RL, Aleo V, Brown B, Buen M, Buresh J, Carson M, Franklin J, Ham P, Humes L, Husby G, Hutchins J, Jechorek R, Jenkins J, Kaufer A, Kexel N, Kora L, Lam L, Lau D, Leighton S, Loftis M, Luc S, Martin J, Nacar I, Nogle J, Park J, Schultz A, Seymore D, Smith C, Smith J, Thou P, Ulmer M, Voss R, Weaver V. Evaluation of the VIDAS® Listeria (LIS) Immunoassay for the Detection of Listeria in Foods Using Demi-Fraser and Fraser Enrichment Broths, as Modification of AOAC Official Method 999.06 (AOAC Official Method 2004.06). J AOAC Int 2019. [DOI: 10.1093/jaoac/88.3.750] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
A multilaboratory study was conducted to compare the VIDAS® LIS immunoassay with the standard cultural methods for the detection of Listeria in foods using an enrichment modification of AOAC Official Method 999.06. The modified enrichment protocol was implemented to harmonize the VIDAS LIS assay with the VIDAS LMO2 assay. Five food types—brie cheese, vanilla ice cream, frozen green beans, frozen raw tilapia fish, and cooked roast beef—at 3 inoculation levels, were analyzed by each method. A total of 15 laboratories representing government and industry participated. In this study, 1206 test portions were tested, of which 1170 were used in the statistical analysis. There were 433 positive by the VIDAS LIS assay and 396 positive by the standard culture methods. A Chi-square analysis of each of the 5 food types, at the 3 inoculation levels tested, was performed. The resulting average Chi square analysis, 0.42, indicated that, overall, there are no statistical differences between the VIDAS LIS assay and the standard methods at the 5% level of significance.
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Feldsine PT, Lienau AH, Roa NH, Green ST, Braut-Taormina J, Braymen C, Chavey C, Cohen A, Deans A, Delancey S, Elems C, Forgey R, Gonzalez E, Hall V, Huang MCJ, Humes L, Johnson F, Kerdaji K, King J, Kipker L, Lau D, Nogle J, Peters C, Pinkston J, Porter M, Potter L, Rogers S, Stephens J, Skorupa G, Taylor R, Tuncan E, Vought K, Vrana D. Enumeration of Total Coliforms and E. coli in Foods by the SimPlate® Coliform and E. coli Color Indicator Method and Conventional Culture Methods: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/88.5.1318] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
The relative effectiveness of the SimPlate® Coliform and E. coli Color Indicator (CEc-CI) method was compared to the AOAC 3-tube Most Probable Number (MPN) methods for enumerating and confirming coliforms and Escherichia coli in foods (966.23 and 966.24). In this study, test portions were prepared and analyzed according to the conditions stated in both the AOAC methods and SimPlate directions for use. Six food types were artificially contaminated with coliform bacteria and E. coli: frozen burritos, frozen broccoli, fluid pasteurized milk, whole almond nut meats, cheese, and powdered cake mix. Method comparisons were conducted. Overall, the SimPlate method demonstrated <0.3 log difference for total coliform and E. coli counts compared to the AOAC reference methods for the majority of food types and levels analyzed. In all cases, the repeatability and reproducibility of the SimPlate CEc-CI method were not different from those of the reference methods and in certain cases, were statistically better than those of the AOAC 3-tube MPN methods. These results indicate that the SimPlate CEc-CI method and the reference culture methods are comparable for enumeration of both total coliforms and E. coli in foods.
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Affiliation(s)
| | - Andrew H Lienau
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - Nerie H Roa
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
| | - Shannon T Green
- BioControl Systems, Inc., 12822 SE 32nd St, Bellevue, WA 98005
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35
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Ferreira JL, Maslanka S, Johnson E, Goodnough M, Barash J, Boersma T, Brown E, Dykes J, Eliasberg S, Inami G, Lau D, Lindsey C, Ludwig G, Minor E, Parker T, Reddy R, Skinner G, Solomon H, Tepp B, Tetzloff R. Detection of Botulinal Neurotoxins A, B, E, and F by Amplified Enzyme-Linked Immunosorbent Assay: Collaborative Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/86.2.314] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
An amplified enzyme-linked immunosorbent assay (amp-ELISA) was compared with the AOAC Official Method 977.26 for detection of Clostridium botulinum and its toxins in foods. Eleven laboratories participated and the results of 10 laboratories were used in the study. Two anaerobic culture media, tryptone peptone glucose yeast extract (TPGY) and cooked meat medium (CMM) were used to generate toxic samples with types A, B, E, and F botulinal strains. Nonbotulinal clostridia were also tested. The toxicity of each botulinal culture was determined by the AOAC method, and the cultures were then diluted, if necessary, to high (about 10 000 minimal lethal dose [MLD]/mL) and low (about 100 MLD/mL) test samples. The overall sensitivity of detection in TPGY and CMM cultures with the amp-ELISA was 94.7% at about 100 MLD/mL and 99.6% for samples with ≥10 000 MLD/mL toxicity. The amp-ELISA detection sensitivity for low toxin samples was 92.3% in TPGY and 99.4% in CMM. The false-positive rate ranged from 1.5% for type A to 28.6% for type F in TPGY, and from 2.4% for type A to 11.4% for type F in CMM. Most of the cross-reactivity was due to detection of other botulinal types, especially in high toxin samples. The amp-ELISA could be used to screen suspect cultures for botulinal toxins. Positive amp-ELISA samples would be confirmed by the AOAC reference method.
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Affiliation(s)
| | - Susan Maslanka
- Centers for Disease Control and Prevention, 1600 Clifton Rd, Atlanta, GA 30333
| | - Eric Johnson
- University of Wisconsin–Madison, Department of Food Microbiology and Toxicology, 1925 Willow Dr, Madison, WI 53706
| | - Mike Goodnough
- Present address: Metabiologics, Inc., 505 S. Rosa Rd, Madison, WI 53719
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Cieri UR, Bertrand R, Choi KK, Gagnon J, Krol P, Latzo P, Lau D, Melendez J, Pyramides G, Sen S, Steible D, Weigand J. Determination of Atropine (Hyoscyamine) Sulfate in Commercial Products by Liquid Chromatography with UV Absorbance and Fluorescence Detection: Multilaboratory Study. J AOAC Int 2019. [DOI: 10.1093/jaoac/86.6.1128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
A liquid chromatographic (LC) method with 2 detection systems for determining atropine (hyoscyamine) sulfate in commercial products was tested in a multilaboratory study. Depending on the type of product, sample solutions are prepared in methanol or methanol–water (1 + 1). The standard solution contains about 1.0 mg atropine sul-fate/100 mL and is prepared in the same solvent used in sample preparation. LC separations are performed on a 7.5 cm Novapak silica column. The mobile phase is prepared by mixing 970 mL methanol with 30 mL of a 1% aqueous solution of 1-pentanesulfonic acid, sodium salt. Detection is by 2 systems, UV absorbance detection at 220 nm and fluorescence detection with excitation at 255 nm and emission at 285 nm. The injection volume is 100 or 200 μL. The following materials were used for the study: 2 separate samples of tablets labeled to contain 0.4 mg atropine sulfate, 2 separate samples of extended-release tablets labeled to contain 0.375 mg hyoscyamine sulfate, one sample of atropine sulfate injection labeled to contain 2 mg/mL, and one sample of 1% (v/v) atropine sul-fate ophthalmic. Eight participants analyzed 2 separate portions of the 6 samples by both detection systems. A ninth participant analyzed the samples in duplicate but only by UV absorbance detection because of the unavailability of a fluorescence detector. The relative standard deviation (RSD) between laboratories ranged from 1.4 to 3.3% for samples of tablets and injections but higher for ophthalmic solutions (5.1–5.2%). A linearity study was conducted in the originating laboratory before the multilaboratory study with 5 solutions ranging in concentration from 0.80 to 1.20 mg atropine sul-fate in 100 mL. Average recoveries were 100.0% by UV absorbance detection and 99.9% by fluorescence detection; the RSDs were 1.1 and 1.2%, respectively.
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Affiliation(s)
- Ugo R Cieri
- U.S. Food and Drug Administration, 2nd and Chestnut Sts, Philadelphia, PA 19106
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Kadhim K, Elliott A, Middeldorp M, Hendriks J, Gallagher C, Mahajan R, McEvoy RD, Lau D, Sanders P, Linz D. P3794MOODS: a novel risk score to identify patients with atrial fibrillation and sleep apnoea. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Sleep-disordered breathing (SDB) is an important risk factor for developing atrial fibrillation (AF), and treatment of concomitant SDB can improve AF rhythm outcomes. Diagnosis of SDB requires sleep studies which can pose a significant time and resource burden. We sought to develop a prediction score based on clinical characteristics that can help identify AF patients who require further assessment for SDB.
Methods
Prospectively-collected data for 442 consecutive patients treated for AF from 2009 to 2017 were analysed. All patients were considered candidates for rhythm-control and therefore referred for sleep studies. The diagnosis of SDB was confirmed using in-lab polysomnography and classified using the apnoea-hypopnoea-index (AHI), with cut-offs of ≥15/hr and ≥30/hr indicating moderate-to-severe and severe SDB respectively. Patients treated up to 2015 formed the derivation cohort (n=311) and the remainder (n=113) formed the validation cohort. Multivariate logistic regression analysis was used to identify clinical variables predictive of moderate-to-severe SDB. A risk score model was developed based on regression coefficients and tested using receiver-operating-characteristics analyses on the validation cohort.
Results
Overall, mean age was 60±11 years, mean body mass index (BMI) was 30±5 kg/m2 and 69% were men. The prevalence of moderate-to-severe SDB was 33.7%. There were no significant differences in baseline characteristics between the derivation and validation cohorts. Male gender (score=1), overweight (BMI: 25–29 kg/m2, score=2), obesity (BMI≥30 kg/m2, score=3), diabetes (score=1), and stroke (score=2) were significantly independently predictive of moderate-to-severe SDB and formulated the score. The score performed well to predict moderate-to-severe SDB with a C-statistic of 0.73 (95% CI: 0.67–0.79, P<0.001) in the derivation cohort, and 0.67 (95% CI: 0.57–0.77, P<0.001) in the validation cohort. As a rule-out test, a score of ≤3 had a negative predictive value of 77% for moderate-to-severe SDB (91% for severe SDB). A score of ≥4 had an intermediate positive likelihood ratio (PLR) of 2 for moderate-to-severe SDB (2.2 for severe SDB), while a score of ≥5 had a high PLR of 6.5 and 6.8 for moderate-to-severe SDB and severe SDB respectively.
Sensitivity and specificity table
Conclusion
A novel risk score comprising clinical characteristics can identify patients with AF likely to benefit from further assessment for SDB. Application of this model may aid optimise resource utilisation and facilitate timely patient care.
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Affiliation(s)
- K Kadhim
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - A Elliott
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - M Middeldorp
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - J Hendriks
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - C Gallagher
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - R Mahajan
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - R D McEvoy
- Flinders Medical Centre and Flinders University, Adelaide Institute for Sleep Health (AISH), Adelaide, Australia
| | - D Lau
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - P Sanders
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
| | - D Linz
- University of Adelaide, Centre for Heart Rhythm Disorders, Adelaide, Australia
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38
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Choudhury M, Taylor P, Morgan PH, Duckers J, Lau D, George L, Ketchell RI, Wong FS. Association between HbA 1c and the development of cystic fibrosis-related diabetes. Diabet Med 2019; 36:1251-1255. [PMID: 30697808 DOI: 10.1111/dme.13912] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/28/2019] [Indexed: 01/09/2023]
Abstract
AIMS To examine HbA1c as a predictor of risk for future development of cystic fibrosis-related diabetes and to assess the association with the development of retinopathy in people with cystic fibrosis-related diabetes. METHODS A 7-year retrospective longitudinal study was conducted in 50 adults with cystic fibrosis, comparing oral glucose tolerance test results with HbA1c values in predicting the development of cystic fibrosis-related diabetes. Retinal screening data were also compared with HbA1c measurements to assess microvascular outcome. RESULTS An HbA1c value ≥37 mmol/mol (5.5%; hazard ratio 3.49, CI 1.5-8.1) was significantly associated with the development of dysglycaemia, as defined by the oral glucose tolerance test over a 7-year period. Severity of diabetic retinopathy was associated with a higher HbA1c and longer duration of cystic fibrosis-related diabetes. CONCLUSION There is a link between HbA1c level and the future development of dysglycaemia in cystic fibrosis based on oral glucose tolerance test, as well as microvascular outcomes. Although current guidance does not advocate the use of HbA1c as a diagnostic tool in cystic fibrosis-related diabetes, it may be of clinical use in determining individuals at risk of future development of cystic fibrosis-related diabetes.
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Affiliation(s)
- M Choudhury
- All Wales Adult Cystic Fibrosis Centre, University Hospital Llandough, Cardiff, UK
- Diabetes Research Group, Division of Infection and Immunity, Cardiff, UK
| | - P Taylor
- Thyroid Research Group, Division of Infection and Immunity, Cardiff University School of Medicine, Cardiff, UK
| | - P H Morgan
- Cardiff Business School, Cardiff University, Cardiff, UK
| | - J Duckers
- All Wales Adult Cystic Fibrosis Centre, University Hospital Llandough, Cardiff, UK
| | - D Lau
- All Wales Adult Cystic Fibrosis Centre, University Hospital Llandough, Cardiff, UK
| | - L George
- All Wales Adult Cystic Fibrosis Centre, University Hospital Llandough, Cardiff, UK
| | - R I Ketchell
- All Wales Adult Cystic Fibrosis Centre, University Hospital Llandough, Cardiff, UK
| | - F S Wong
- All Wales Adult Cystic Fibrosis Centre, University Hospital Llandough, Cardiff, UK
- Diabetes Research Group, Division of Infection and Immunity, Cardiff, UK
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Linz D, Saha S, Kutieleh R, Kadhim K, Lau D, Baumert M, Sanders P. P2843Impact of bipolar vector orientation and inter-electrode spacing on electrograms during human atrial fibrillation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
In patients with atrial fibrillation (AF), local atrial bipolar electrograms (EGM) are clinically used to determine peak-to-peak voltage (Vpp), dominant frequency (DF) and Shannon Entropy (ShEn) for electroanatomical substrate characterization and substrate-based ablation. The effect of bipolar vector orientation and inter-electrode spacing on these EGM-derived measures during AF is unclear.
Methods
To quantify the impact of bipolar vector orientation and inter-electrode spacing, bipolar EGM (10,496 and 20,968 atrial sites, respectively) were reconstructed from unipolar EGM recorded with an array of 18 electrodes in 14 patients with persistent AF. We compared Vpp, DF and ShEn between any two adjacent bipolar vectors with a difference of 45 degree. Vpp, DF and ShEn values were ranked into different classes from highest to lowest value. To quantify the effect of inter-electrode spacing, bipolar EGM were constructed from electrodes spaced 4mm, 8mm, and 12mm apart, respectively.
Results
First, bipolar vector orientation significantly impacts Vpp (maximal difference: 1.341±2.169 mV vs. 0.595±0.652 mV; p<0.01) and the percentage of atrial low voltage areas (Vpp<0.05mV) (maximal difference: 62.31% vs. 32.54%). Bipolar vector orientation also influences DF (maximal difference: 8.547±2.971 Hz vs. 6.360±1.077 Hz; p<0.01) and ShEn (maximal difference: 4.898±0.488 vs. 4.120±0.650; p<0.01) measurements. Second, inter-electrode spacing affects Vppincreasing from 0.854±1.299 mV to 1.013±1.302 mV for 4mm, and 12mm, respectively (p<0.01). The percentage of atrial low voltage areas differed between 53.77% and 42.03% for 4mm and 12mm, respectively. Furthermore, inter-electrode spacing alters DF (maximal difference: 7.316±2.239 Hz vs. 7.234±2.124 Hz; p<0.01) and ShEn (maximal difference: 4.364±0.714 vs. 4.514±0.624; p<0.01) measurements.
Conclusions
Bipolar vector orientation and inter-electrode spacing both significantly affect bipolar EGM-derived measures that may result in significant uncertainty around the electroanatomical substrate characterization in AF patients, which should be considered in the development of future mapping catheter tools and algorithms.
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Affiliation(s)
- D Linz
- University of Adelaide, Adelaide, Australia
| | - S Saha
- University of Adelaide, Adelaide, Australia
| | - R Kutieleh
- University of Adelaide, Adelaide, Australia
| | - K Kadhim
- University of Adelaide, Adelaide, Australia
| | - D Lau
- University of Adelaide, Adelaide, Australia
| | - M Baumert
- University of Adelaide, Adelaide, Australia
| | - P Sanders
- University of Adelaide, Adelaide, Australia
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Elezagic D, Mörgelin M, Hermes G, Hamprecht A, Sengle G, Lau D, Höllriegl S, Wagener R, Paulsson M, Streichert T, Klatt AR. Antimicrobial peptides derived from the cartilage.-specific C-type Lectin Domain Family 3 Member A (CLEC3A) - potential in the prevention and treatment of septic arthritis. Osteoarthritis Cartilage 2019; 27:1564-1573. [PMID: 31279936 DOI: 10.1016/j.joca.2019.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 05/20/2019] [Accepted: 06/11/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate the antimicrobial activity of peptides derived from C-type Lectin Domain Family 3 Member A (CLEC3A), shed light on the mechanism of antimicrobial activity and assess their potential application in prevention and treatment of septic arthritis. DESIGN We performed immunoblot to detect CLEC3A peptides in human cartilage extracts. To investigate their antimicrobial activity, we designed peptides and recombinantly expressed CLEC3A domains and used them to perform viable count assays using E.coli, P.aeruginosa and S.aureus. We investigated the mechanism of their antimicrobial activity by fluorescence and scanning electron microscopy, performed ELISA-style immunoassays and transmission electron microscopy to test for lipopolysaccharide binding and surface plasmon resonance to test for lipoteichoic acid (LTA) binding. We coated CLEC3A peptides on titanium, a commonly used prosthetic material, and performed fluorescence microscopy to quantify bacterial adhesion. Moreover, we assessed the peptides' cytotoxicity against primary human chondrocytes using MTT cell viability assays. RESULTS CLEC3A fragments were detected in human cartilage extracts. Moreover, bacterial supernatants lead to fragmentation of recombinant and cartilage-derived CLEC3A. CLEC3A-derived peptides killed E.coli, P.aeruginosa and S.aureus, permeabilized bacterial membranes and bound lipopolysaccharide and LTA. Coating CLEC3A antimicrobial peptides (AMPs) on titanium lead to significantly reduced bacterial adhesion to the material. In addition, microbicidal concentrations of CLEC3A peptides in vitro displayed no direct cytotoxicity against primary human chondrocytes. CONCLUSIONS We identify cartilage-specific AMPs originating from CLEC3A, resolve the mechanism of their antimicrobial activity and point to a novel approach in the prevention and treatment of septic arthritis using potent, non-toxic, AMPs.
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Affiliation(s)
- D Elezagic
- Institute for Clinical Chemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany
| | - M Mörgelin
- Department of Clinical Sciences, Division of Infection Medicine, Biomedical Center, Lund University, 22184 Lund, Sweden
| | - G Hermes
- Institute for Clinical Chemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany
| | - A Hamprecht
- Institute for Medical Microbiology, Immunology and Hygiene, Faculty of Medicine, University of Cologne, 50935 Cologne, Germany
| | - G Sengle
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany; Center for Molecular Medicine Cologne, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany; Department of Pediatrics and Adolescent Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - D Lau
- Institute for Clinical Chemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany
| | - S Höllriegl
- Cologne Braunsfeld Trinity Hospital, 50933 Cologne, Germany
| | - R Wagener
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany; Center for Molecular Medicine Cologne, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany
| | - M Paulsson
- Center for Biochemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany; Center for Molecular Medicine Cologne, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany; Cologne Excellence Cluster on Cellular Stress Responses in Ageing-associated Diseases, University of Cologne, 50931 Cologne, Germany
| | - T Streichert
- Institute for Clinical Chemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany
| | - A R Klatt
- Institute for Clinical Chemistry, Faculty of Medicine, University of Cologne, 50931 Cologne, Germany.
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Linz D, Nalliah C, Baumert M, Kadhim K, Middeldorp M, Elliott A, Lau D, McEvoy D, Kalman J, Sanders P. P661Nocturnal hypoxemic burden in ambulatory patients with atrial fibrillation: a disease-orientated assessment of sleep-disordered breathing severity. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Studies investigating the relationship between sleep-disordered breathing (SDB) and atrial fibrillation (AF) have largely assessed SDB-severity by the apnea–hypopnea index (AHI). However, the AHI does not incorporate nocturnal hypoxemic burden, which may increase the risk of non-paroxysmal AF (nPAF) as the clinical manifestation of more progressed AF substrates. This investigation sought to systematically characterize and compare the composition of AHI and hypoxemic burden with the aim to defining a disease-orientated metric for SDB-severity best associated with prevalent nPAF.
Methods
Polysomnography including overnight oximetry data were obtained in 435 consecutive ambulatory AF patients to determine the composition of AHI (apneas vs. hypopneas), the number of acute episodic desaturations per hour (oxygen desaturation index, ODI) and the composition of total time spent below 90% oxygen saturation (T90Total) attributed to acute desaturations (T90Desaturation). Logistic regression analysis was used to characterize the association with prevalent nPAF.
Results
One hundred sixty-nine AF patients (38%) had nPAF and one third (n=149, 34%) had moderate-to-severe SDB (AHI>15). 82% of the median total AHI (9.4 [3.6–20.1]) could be attributed to hypopneas. Only 29% of events were associated with episodic desaturations, which contributed to 96% (T90Desaturation) of the variation in T90Total. The high variability in durations and nadirs of distinct desaturation events can expose patients to long T90Total, even if the AHI is low. Not AHI, but T90Total and ODI were associated with nPAF independent of gender and age. However, diabetes, hypertension and body mass index contributed more significantly to the overall risk of nPAF.
Conclusions
In AF patients, hypopneas constitute a majority of respiratory events during sleep. Patients with low AHI can still be exposed to high nocturnal hypoxemic burden, which is mainly a cumulative consequence of episodic desaturations. T90Total and ODI, but not AHI, were associated with nPAF independent of gender and age, but concomitant modifiable risk factors made a more significant contribution to the overall risk of nPAF versus PAF.
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Affiliation(s)
- D Linz
- University of Adelaide, Adelaide, Australia
| | - C Nalliah
- Royal Melbourne Hospital, Royal Melbourne Hospital, Melbourne, Australia
| | - M Baumert
- University of Adelaide, Adelaide, Australia
| | - K Kadhim
- University of Adelaide, Adelaide, Australia
| | | | - A Elliott
- University of Adelaide, Adelaide, Australia
| | - D Lau
- University of Adelaide, Adelaide, Australia
| | - D McEvoy
- University of Adelaide, Adelaide, Australia
| | - J Kalman
- Royal Melbourne Hospital, Royal Melbourne Hospital, Melbourne, Australia
| | - P Sanders
- Royal Melbourne Hospital, Royal Melbourne Hospital, Melbourne, Australia
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O'Shea C, Brooks A, Campbell K, Hendriks J, Lau D, Sanders P. A Retrospective Analysis of Remote Monitoring Alerts for Atrial Fibrillation: Implications for Anticoagulation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Malik V, Thiyagarajah A, Munawar D, Linz D, Elliott A, Emami M, Mishima R, Mahajan R, Sanders P, Lau D. Abnormal Cardiac Electrical Remodelling in POTS: Mechanistic Insights on Potential Autonomic Dysregulation. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Agbaedeng T, Emami M, Kadhim K, Linz D, Mahajan R, Lau D, Sanders P. Cardiac Fibrosis as a Risk Factor for Atrial Fibrillation: A Meta-Analysis. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Gallagher C, Wong C, Hendriks J, Bednarz J, Elliott A, Linz D, Middeldorp M, Mahajan R, Lau D, Sanders P. Predictors of Health Care Resource Utilisation in AF: The REVIEW AF Study. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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O'Shea C, Campbell K, Hendriks J, Brooks A, Lau D, Sanders P. Remote Monitoring Alert Burden from Implantable Cardioverter Defibrillators: An Analysis of >4000 Patients. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Khokhar K, Lau D, Stiles M, Mahajan R, Bednarz J, Misihima R, Gallagher C, Thiyagarajah A, Verdicchio C, Munawar D, Kadhim K, Sanders P. Assessment of Residual Aortic Stiffness in AF: Exploring the Role of Central Haemodynamics Response to Exercise. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Westaway S, Nye E, Gallagher C, Pitman B, Lau D, Mahajan R, Sanders P, Wong C. Trends in the Use of Permanent Pacemakers in Australia: A Nationwide Study from 2008–2017. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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49
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Nalliah C, Baumert M, Kadhim K, Middeldorp M, Elliott A, Lau D, Mahajan R, Wong C, McEvoy D, Kalman J, Sanders P, Linz D. Nocturnal Hypoxemic Burden in Ambulatory Patients with Atrial Fibrillation: a Disease-Orientated Assessment of Sleep-Disordered Breathing Severity. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Agbaedeng T, Twomey D, Thanigaimani S, Linz D, Lau D, Mahajan R, Sanders P. Weight Fluctuation Induces Formation of Pro-Arrhythmic Substrate by Fibro-Fatty Depositions and Residual Electro-Structural Remodelling: Evidence from an Ovine Model. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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