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Leung GM, Hedley AJ, Kong J, Lam TH, Lau FL, Rainer T, Wong TW, Tong YH. Correction to: A clinical prediction rule for diagnosing severe acute respiratory syndrome in the emergency department. Hong Kong Med J 2020; 26. [PMID: 32255435 DOI: 10.12809/hkm0810sp5p8-c] [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: 11/05/2022] Open
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Holmes J, Rainer T, Geen J, Williams JD, Phillips AO. Adding a new dimension to the weekend effect: an analysis of a national data set of electronic AKI alerts. QJM 2018; 111:249-255. [PMID: 29361145 DOI: 10.1093/qjmed/hcy012] [Citation(s) in RCA: 5] [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] [Received: 11/22/2017] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Increased mortality related to differences in delivery of weekend clinical care is the subject of much debate. AIM We compared mortality following detection of acute kidney injury (AKI) on week and weekend days across community and hospital settings. DESIGN A prospective national cohort study, with AKI identified using the Welsh National electronic AKI reporting system. METHODS Data were collected on outcome for all cases of adult AKI in Wales between 1 November 2013 and 31 January 2017. RESULTS There were a total of 107 298 episodes. Weekday detection of AKI was associated with 28.8% (26 439); 90-day mortality compared to 90-day mortality of 31.9% (4551) for AKI detected on weekdays (RR: 1.11, 95% CI: 1.08-1.14, P < 0.001, HR: 1.16 95% CI: 1.12-1.20, P < 0.001). There was no 'weekend effect' for mortality associated with hospital-acquired AKI. Weekday detection of community-acquired AKI (CA-AKI) was associated with a 22.6% (10 356) mortality compared with weekend detection of CA-AKI, which was associated with a 28.6% (1619) mortality (RR: 1.26, 95% CI: 1.21-1.32, P < 0.001, HR: 1.34, 95%CI: 1.28-1.42, P < 0.001). The excess mortality in weekend CA-AKI was driven by CA-AKI detected at the weekend that was not admitted to hospital compared with CA-AKI detected on weekdays which was admitted to hospital (34.5% vs. 19.1%, RR: 1.8, 95% CI: 1.69-1.91, P < 0.001, HR: 2.03, 95% CI: 1.88-2.19, P < 0.001). CONCLUSION 'Weekend effect' in AKI relates to access to in-patient care for patients presenting predominantly to hospital emergency departments with AKI at the weekend.
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Affiliation(s)
- J Holmes
- Welsh Renal Clinical Network, Cwm Taf University Health Board, Cardiff, UK
| | - T Rainer
- Department of Emergency Medicine, University of Cardiff School of Medicine, Cardiff, UK
| | - J Geen
- Department of Clinical Biochemistry, Cwm Taf University Health Board and Faculty of Life Sciences and Education, University of South Wales, Cardiff, UK
| | - J D Williams
- Institute of Nephrology, University of Cardiff School of Medicine, Cardiff, UK
| | - A O Phillips
- Institute of Nephrology, University of Cardiff School of Medicine, Cardiff, UK
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Yang M, Graham C, Rainer T. Outcome after Implementation of Sepsis Guideline in the Emergency Department of a University Hospital in Hong Kong. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791502200305] [Citation(s) in RCA: 4] [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: 01/03/2023] Open
Abstract
Introduction Internationally, standard care of patients with severe sepsis consists of early detection, early antimicrobial therapy, and aggressive intravenous fluid therapy to maintain tissue oxygenation and perfusion. In this retrospective study, we aimed to examine the management of patients with severe sepsis in a local university hospital emergency department before and after the implementation of a sepsis management guideline. Method We collected data on the management and outcome of patients during a three-month period before the implementation of a sepsis guideline (October-December 2009). We then collected similar data one year after the implementation (October-December 2010). Key sepsis management areas and in-hospital mortality rates were compared, as were length of resuscitation, three-month mortality rate, hospital length of stay (LOS) and intensive care unit (ICU) LOS. Results Data from 115 patients were collected in the pre-implementation group, while data on 102 patients were collected for the post-implementation group. There were more patients with hypoperfusion in the post-implementation cohort (25.2% vs. 40.2%, p=0.019). There was no difference in background characteristics, average lactate value, average MAP or number of hypotensive patients between the two groups. Significantly more antibiotics were given after the intervention (13.0% vs. 23.5%, p=0.045) and more patients had a lactate level measured (43.0% vs. 73.5%; p<0.001). There was a trend towards better survival for a subgroup of patients with hypoperfusion (48.0% vs. 29.2%, p=0.060). Conclusions Implementation of a sepsis guideline leads to more antibiotics being given and more lactate measurement in the emergency department. (Hong Kong j.emerg.med. 2015;22:163-171)
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Affiliation(s)
- Mlc Yang
- Queen Elizabeth Hospital, Departments of Accident and Emergency Medicine and Intensive Care Medicine, 30 Gascoigne Road, Kowloon, Hong Kong
| | - Ca Graham
- Prince of Wales Hospital, Accident and Emergency Medicine Academic Unit, 30-32 Ngan Shing Street, N.T., Hong Kong
| | - Th Rainer
- Prince of Wales Hospital, Accident and Emergency Medicine Academic Unit, 30-32 Ngan Shing Street, N.T., Hong Kong
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Abstract
Vibrio parahaemolyticus is one of the commonest pathogens responsible for infectious diarrhoea in Asia. This article highlights recent findings from a retrospective study in an A&E Department in Hong Kong, and reviews current literature in regard to the epidemiological features and laboratory investigations. Prevention, prompt diagnosis and treatment are discussed. Vibrio parahaemolyticus gastroenteritis causes significant morbidity, and is much more prevalent in the summer season. Compared to other bacterial gastroenteritis, patients with this condition may present relatively sooner after the onset of diarrhoea. To ensure prompt detection of outbreaks, an appropriate stool culture medium specific for Vibrio spp. should be used.
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Affiliation(s)
- Ssw Chan
- Prince of Wales Hospital, Accident & Emergency Department, 30–32 Ngan Shing Street, Shatin, N.T., Hong Kong
| | - Kc Ng
- Prince of Wales Hospital, Department of Microbiology
| | | | - Th Rainer
- Prince of Wales Hospital, Accident & Emergency Medicine Academic Unit Timothy
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Rainer T, Chan S, Kwok K, Suen D, Lam W, Cocks R. Severe Trauma Presenting to the Resuscitation Room of a Hong Kong Emergency Department. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490790000700302] [Citation(s) in RCA: 4] [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: 11/15/2022] Open
Abstract
Background Little is known about the epidemiology or mortality associated with trauma in Hong Kong or of its demands on the service of emergency departments. This study describes both the quantity and quality of trauma presenting to an emergency department in Hong Kong. Methods In a retrospective study conducted from January to June 1997 there were 100,000 new patient attendances at the emergency department of the Prince of Wales Hospital of which 227 trauma patients (0.002%) were triaged to the Resuscitation Room. Patient records were scrutinised for types and mechanisms of injury, times of injury and arrival at the emergency department, role of alcohol, and scored using an injury severity score. Important outcomes were mortality and duration of hospital stay. Results Data was available on 221 (97%) subjects (male to female ratio 3.7:1) of which there were 203 adults and 18 children. Blunt injury accounted for 199/215 (92.6%) cases and penetrating for 16/215 (7.4%) cases. Motor vehicle crashes accounted for 113/205 (55%) cases, falls for 47/205 (23%) cases and assault for 18/205 (9%) cases. 51/224 (23%) cases presented between the hours of midnight and 8 am. The median injury severity score (ISS) was 9 (mean 11; range 1–59). 32/227 (14%) patients died, the majority resulting from road traffic accidents or falls. Conclusion Patterns of ‘severe’ trauma in Hong Kong primarily affect male adults, include a preponderance of motor vehicle crashes and falls, and significant mortality.
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Affiliation(s)
- Th Rainer
- Prince of Wales Hospital, Accident & Emergency Medicine Academic Unit, The Chinese University of Hong Kong, Rooms G05/06, Cancer Centre, Shatin, N.T., Hong Kong
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So J, Chow E, Cattermole G, Graham C, Rainer T. A Comparison of the Performance of Different Age-Based Paediatric Weight Estimation Formulae in Hong Kong Children. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791602300101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Objective To evaluate the performance of five existing age-based weight estimation formulae - the original and updated Advanced Paediatric Life Support (APLS) formulae, Luscombe formula, Best Guess formula, Chinese Age Weight Rule (CAWR) - as well as a new two-part weight estimation formula, the Chinese Age Weight Rule-3 (CAWR-3), in Hong Kong children presenting to the emergency department (ED). Methods Data based on children aged 1-12 who presented to the ED of a tertiary referral centre in Hong Kong over a six-month period. Actual weight was compared against estimated weight from the weight estimation formulae. Level of agreement was assessed by Bland-Altman analysis using mean percentage difference (MPD) and 95% limits of agreement (LOA). Root mean squared error (RMSE) and proportions of weight estimates within 10%, 15% and 20% of actual weight were calculated. Results A total of 4600 children were included. The CAWR-3 outperformed the five existing weight estimation formulae. The CAWR-3 had the least MPD in age 4-12 (MPD +3.2%), as well as the second least MPD in age 1-12 (MPD -0.7%). The CAWR-3 had narrowest 95% LOA in age 1-3 (95% LOA -32.6% to 21.9%) and the second narrowest 95% LOA in age 1-12 (95% LOA -37.5% to 36.1%). The CAWR-3 had the smallest RMSE of 6.33 kg in age 4-12 and the smallest RMSE of 4.90 kg in age 1-12. Furthermore, the CAWR-3 had the highest proportion of weight estimates within 10%, 15% and 20% of actual weight. Conclusion The CAWR-3 outperforms the five existing age-based weight estimation formulae in Hong Kong children presenting to the emergency department.
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Affiliation(s)
- Jlt So
- Princess Margaret Hospital, Accident & Emergency Department, 2-10 Princess Margaret Hospital Road, Lai Chi Kok, Kowloon, Hong Kong
| | - Epf Chow
- Monash University, Central Clinical School, Faculty of Medicine, Nursing and Health Sciences, Melbourne, Victoria, Australia
| | - Gn Cattermole
- Princess Royal University Hospital, Emergency Department, London, United Kingdom
| | - Ca Graham
- Princes of Wales Hospital, Accident and Emergency Medicine Academic Unit, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Shatin, New Territories, Hong Kong
| | - Th Rainer
- Princes of Wales Hospital, Accident and Emergency Medicine Academic Unit, The Chinese University of Hong Kong, 30-32 Ngan Shing Street, Shatin, New Territories, Hong Kong
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Affiliation(s)
- R. Renneberg
- Biosensors and Bioelectronics Lab, Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - C.P. Chan
- Biosensors and Bioelectronics Lab, Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | - Y.M. Nie
- Guangzhou Blood Center, PR China
| | - M.F. Leung
- Biosensors and Bioelectronics Lab, Department of Chemistry, The Hong Kong University of Science and Technology, Kowloon, Hong Kong
| | | | - M. Ip
- Department of Microbiology, Prince of Wales Hospital, Shatin, New Territories, Hong Kong, SAR, China
| | - T. Rainer
- Department of Accident & Emergency Medicine Academic Unit, Prince of Wales Hospital, Shatin, New Territories, Hong Kong, SAR, China
| | - H. Schennach
- Central Institute of Blood Transfusion and Immunology, University Clinic, Innsbruck, Austria
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Wai A, Rainer T. PB20 Analysis of Complaints Lodged by Emergency Department Patients in a Teaching Hospital in Hong Kong. Arch Emerg Med 2012. [DOI: 10.1136/emermed-2012-201246.20] [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: 11/04/2022]
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Wong GK, Tang BYH, Yeung JHH, Collins G, Rainer T, Ng SC, Poon WS. Traumatic intracerebral haemorrhage: is the CT pattern related to outcome? Br J Neurosurg 2010; 23:601-5. [PMID: 19922273 DOI: 10.3109/02688690902948184] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [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
It is believed by many neurosurgeons that in addition to age and neurological status, the CT patterns of traumatic intracerebral haemorrhages are related to outcome. The aim of this study was to find out whether this is the case. The study was conducted in a regional level I trauma centre in Hong Kong. We prospectively collected data of patients with traumatic intracerebral haematomas over a 4-year period. Of 464 patients with head injuries, traumatic intracerebral haematoma was significantly associated with inpatient mortality and one year unfavorable outcome after adjustment for age, sex, post-resuscitation GCS, and presence of acute subdural haematoma. One hundred-and-fourteen patients had traumatic intracerebral haematomas and were included for further analysis. The mean age was 49, the male to female ratio was 2 to 1, and the median Glasgow Coma Scale (GCS) score on admission was 12. Logistic regression analysis showed that age and GCS score/GCS motor component score were significant factors for inpatient mortality, one-year mortality and one-year outcome. There was an association between temporal haematomas and inpatient mortality, subdural haematomas and inpatient mortality, and bilateral haematomas and unfavourable one-year outcome. In patients with severe head injury, a traumatic haematoma of more than 50 ml was associated higher inpatient mortality. In addition to age and GCS score, the CT patterns of bilateral haematomas, temporal haematomas and associated subdural haematomas were suggestive of poor outcome or mortality.
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Affiliation(s)
- G K Wong
- Division of Neurosurgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong.
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Wong GK, Tang BYH, Yeung JHH, Collins G, Rainer T, Ng SC, Poon WS. Traumatic intracerebral haemorrhage: Is the CT pattern related to outcome? Br J Neurosurg 2009. [DOI: 10.1080/02688690902948184] [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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Leung GM, Hedley AJ, Kong J, Lam TH, Lau FL, Rainer T, Wong TW, Tong YH. A clinical prediction rule for diagnosing severe acute respiratory syndrome in the emergency department. Hong Kong Med J 2008; 14:8-10. [PMID: 18941266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023] Open
Affiliation(s)
- G M Leung
- Department of Community Medicine, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China.
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Wen HM, Lam WWM, Rainer T, Fan YH, Leung TWH, Chan YL, Wong KS. Multiple acute cerebral infarcts on diffusion-weighted imaging and risk of recurrent stroke. Neurology 2004; 63:1317-9. [PMID: 15477564 DOI: 10.1212/01.wnl.0000140490.22251.b6] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Multiple acute cerebral infarcts (MACIs) detected by diffusion-weighted imaging (DWI) may indicate an unstable source of thromboembolism. The authors studied 119 consecutive acute ischemic stroke patients within 24 hours of onset with DWI. MACIs were present in 20 patients (16.8%). During the follow-up period, there were 15 recurrent strokes, 3 acute coronary syndromes, and 5 deaths. MACI was the only significant independent predictor for vascular events and death (odd ratio [OR]] = 4.34; p = 0.001) and stroke recurrence (OR = 5.93; p = 0.001).
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Affiliation(s)
- H M Wen
- Division of Neurology, Department of Medicine, Chinese University of Hong Kong, Hong Kong
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Lam WWM, So NMC, Wong KS, Rainer T. B0 Images Obtained From Diffusion-Weighted Echo Planar Sequences for the Detection of Intracerebral Bleeds. J Neuroimaging 2003. [DOI: 10.1111/j.1552-6569.2003.tb00165.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Lam WWM, So NMC, Wong KS, Rainer T. B0 images obtained from diffusion-weighted echo planar sequences for the detection of intracerebral bleeds. J Neuroimaging 2003; 13:99-105. [PMID: 12722491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
BACKGROUND AND PURPOSE To evaluate the accuracy of B0 echo planar imaging (EPI) sequences for the detection of intracerebral bleeds. METHODS One hundred patients with acute strokes had magnetic resonance imaging and computed tomography (CT) examinations performed within 48 hours after the onset of symptoms. The detectability of intracerebral bleeds by the B0 EPI sequences was assessed. The results were compared to the gradient echo (GRE) sequence and CT brain examinations. The results of the GRE sequences were used as the gold standard. RESULTS The B0 EPI sequences detected 11 out of 11 acute, intracerebral hematomas; 6 out of 8 acute hemorrhagic strokes; 2 out of 2 acute, intraventricular hemorrhages; 8 out of 8 old hemorrhagic infarcts; 1 out of 1 subarachnoid hemorrhages; and 11 out of 22 patients with microbleeds. For the detection of acute, intracerebral hematomas and acute, hemorrhagic infarcts, B0 EPI sequences had a sensitivity of 89.5%, a specificity of 100%, and an accuracy of 98%. CT had a sensitivity of 57.9%, a specificity of 100%, and an accuracy of 92%. B0 EPI sequences did not miss any acute or chronic hemorrhages detected by CT examinations. CONCLUSIONS B0 EPI sequences could not replace GRE images for the detection of both acute and chronic hemorrhages. Their sensitivity for the detection of acute and chronic blood products, however, was comparable, if not superior, to that of CT examinations.
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Affiliation(s)
- W W M Lam
- Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, Chinese University of Hong Kong, Ngan Shing Street, Shatin, New Territories, Hong Kong.
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Abstract
A case is presented in which prolonged resuscitation and rewarming was performed following post-rescue cardiopulmonary arrest in severe immersion hypothermia. The rescue and resuscitation techniques necessary to optimise outcome in such cases are described.
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Abstract
OBJECTIVE To assess the workload generated by police inquiries to an accident and emergency (A&E) department and the adherence of medical staff to departmental guidelines relating to these inquiries. DESIGN Prospective analysis of the number, nature, and timing of police inquiries and the information released by medical staff. SETTING A&E department of an inner city teaching hospital. OUTCOME MEASURES Number of personal and telephone requests for information from police; completion of a form of inquiry; record of patient consent for release of information. RESULTS A daily average of 8.7 police inquiries were made, but in only 10% of cases was a form of inquiry completed. The patient's consent for release of information to the police was recorded in 4% of cases. CONCLUSIONS Police inquiries generate a significant workload for an A&E department, often at clinically busy times. Medical staff need further education to ensure that patient confidentiality is respected while assisting the police with their investigations.
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Affiliation(s)
- R Marshall
- Department of Accident and Emergency Medicine, Glasgow Royal Infirmary, United Kingdom
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Abstract
Radiotherapy is widely accepted as primary treatment in the T1 stage of glottic cancer, but controversy surrounds the proper approach to T2 lesions of the glottis. A retrospective review of 90 patients addresses treatment results for T1 and T2 lesions of glottic carcinoma managed by primary radiotherapy with 60 to 64 Gy from 1977 to 1989. Seventy-nine patients met the criteria for local control analysis with a minimum follow-up of 5 years. Radiotherapy alone controlled disease in 93% (43 of 46) of patients with T1 lesion and 18% (6 of 33) of those with T2 tumors (including 10 patients in whom radiotherapy was terminated at 40 Gy because of persistent tumor). Ultimate control of disease for T1 and T2 lesions, including surgical salvage, was 100% and 82%, respectively. Larynx preservation was achieved in 100% of T1 and in 45% of T2 lesions. Extension of tumor and impaired vocal cord mobility showed statistical significance for adverse prognosis (p < .001). This paper discusses how these results affect treatment of glottic carcinoma, particularly in the T2 stage.
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Affiliation(s)
- G Kanonier
- Department of Otolaryngology, University of Innsbruck, Austria
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Rainer T, Gordon M, Robertson C, Cusack S. P136 Evaluation of outcome following prehospital cardiac arrest in patients presenting to two scottish accident and emergency departments. Resuscitation 1994. [DOI: 10.1016/0300-9572(94)90273-9] [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: 11/27/2022]
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Abstract
We have assessed a new positive expiratory pressure device, the Flutter VRP1, in 20 patients with moderately severe asthma. Patients were studied for an initial 1-week 'run-in' period, followed by 2 weeks of the flutter device in one of which the ball-bearing was removed from the bowl. Peak expiratory flow rates, salbutamol inhaler requirements and visual analogue scores were recorded daily. Ease of sputum expectoration showed a significant improvement after 6 days of the flutter device, but there were no differences in objective measurements of lung function nor in salbutamol use. The device may be a useful adjunct to asthma therapy.
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Affiliation(s)
- G L Swift
- Department of Chest Medicine, Llandough Hospital, Cardiff, UK
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Abstract
The objective of this study was to assess the standard of advice given by telephone by accident and emergency (A&E) departments following patients' enquiries. In order to do this patient enquiries were simulated and a telephone questionnaire was carried out. The study was carried out in 18 major and 16 minor A&E departments in Wales. Results achieved were that overall, correct telephone advice was given to 72 of 97 simulated patients (74%). Sixty calls were dealt with by the nursing staff (62%) who gave correct advice on 41 (68%) occasions. No A&E department had a formal policy nor provided staff training for handling patients' enquiries by telephone. It is concluded that A&E departments should train designated members of staff, preferably the triage nurse, who would formally deal with telephone enquiries requiring medical advice. There should be formal documentation of the enquiry and advice proffered as part of a departmental policy.
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Affiliation(s)
- R J Evans
- Department of Emergency Medicine, Cardiff Royal Infirmary
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Rainer T, Ofner G, Marckhgott E. [Ultrasound diagnosis of regional lymph node metastasis of the neck in patients with head-neck neoplasms: sono-morphologic criteria and diagnostic accuracy]. Laryngorhinootologie 1993; 72:73-7. [PMID: 8384856 DOI: 10.1055/s-2007-997859] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
High resolution sonography is generally considered a diagnostic tool with high sensitivity but low specificity in the assessment of cervical lymph node metastases. This study shows, that excellent sonographic results regarding sensitivity and specificity can be achieved, if sonomorphologic parameters, such as size, shape, delineation and type of echo pattern are included in the evaluation. We compared sonomorphology and histology of 82 patients operated for head and neck malignancies. The sonomorphological and histological findings in the largest lymph nodes in all neck areas were compared, and if a definite identification was possible, also in the second largest ones. Virtually, all longitudinal nodes of any size and practically all oval nodes of an axial diameter of up to 20 mm were found to be free of metastases, whereas 80% of round nodes with an axial diameter of up to 20 mm and practically all round and oval nodes exceeding 20 mm in axial diameter as well as irregularly shaped, poorly delineated and structurally inhomogeneous nodes demonstrated metastatic disease. On the basis of these results we have established the following criteria for the assessment of cervical lymph node metastases: All findings demonstrating longitudinal nodes of any size and oval nodes less than 20 mm in axial diameter are to be considered sonographically negative, whereas findings in which oval nodes exceeding 20 mm in axial diameter, as well as round, irregularly shaped, poorly delineated or inhomogeneous lymph nodes are found to be classified malignant. Of 58 sonographically positive neck areas, 54 were found to be malignant on histological examination, while 23 of 24 sonographically negative areas corresponded with histologically benign findings.(ABSTRACT TRUNCATED AT 250 WORDS)
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