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Measurement of breathing in patients with post-COVID-19 using structured light plethysmography (SLP).
No full textINTRODUCTION
COVID-19 pandemic has had a huge impact on global health to date, with 5.6 million cases in the UK since its emergence. The respiratory symptoms largely mimic those of pneumonia' with symptoms ranging from mild to severe. The effects on respiratory physiology are not yet fully understood, but evidence is emerging that there is much dysfunctional breathing reported but little information on tidal ventilation from the acute phase of the infection. Structured light plethysmography (SLP) is a contactless technique of respiratory function testing that measures tidal breathing parameters by assessing thoracoabdominal displacement.
METHODS
In a postdischarge clinic, SLP was performed routinely on 110 hospitalised patients recovering from COVID-19 who had been screened for respiratory symptoms to confirm any respiratory changes occurring after the disease. Patients were categorised based on their hospital treatment in (1) the intensive therapy unit (ITU) (requiring intubation) (n=65) or (2) respiratory wards only (n=45). Data from these two patient cohorts were compared with preacquired data from healthy controls (n=30).
RESULTS
We have found a significantly increased respiratory rate (p=0.006) in ITU patients compared with the healthy cohort and also a significant decrease in the inspiratory time (p=0.01), expiratory time (p=0.005) and the total breathing cycle (p=0.008). There were no significant differences between ITU and ward patients and no significant differences in healthy compared with ward patients. We examined the variability of breathing ('entropy') both in terms of the breath-to-breath interval and the volume-to-volume change. The breath-to-breath interval alone was significantly lower in ITU patients compared with healthy cohorts (p=0.02).
CONCLUSION
Our findings suggest that abnormalities in tidal breathing can be detected in COVID-19 recovery patients, and SLP may be a promising tool in assessing the aftermath of diseases such as COVID-19, particularly if more intensive management strategies such as mechanical ventilation are required
British Society for Haematology guidelines for the diagnosis and evaluation of prognosis of Adult Myelodysplastic Syndromes.
No full textERS/ATS technical standard on interpretive strategies for routine lung function tests.
No full textBACKGROUND
Appropriate interpretation of pulmonary function tests (PFTs) involves the classification of observed values as within/outside the normal range based on a reference population of healthy individuals, integrating knowledge of physiologic determinants of test results into functional classifications, and integrating patterns with other clinical data to estimate prognosis. In 2005, the American Thoracic Society and the European Respiratory Society jointly adopted technical standards for the interpretation of PFTs. We aimed to update the 2005 recommendations and incorporate evidence from recent literature to establish new standard for PFT interpretation.
METHODS
This technical standards document was developed by an international joint task force, appointed by the European Respiratory Society and the American Thoracic Society with multidisciplinary expertise in conducting and interpreting pulmonary function tests, and developing international standards. A comprehensive literature review was conducted, and published evidence was reviewed.
RESULTS
Recommendations for the choice of reference equations and limits of normal of the healthy population to identify individuals with unusually low or high results, respectively are discussed. Interpretation strategies for bronchodilator responsiveness testing, limits of natural changes over time and severity are also updated. Interpretation of measurements made by spirometry, lung volumes and gas transfer are described as they relate to underlying pathophysiology with updated classification protocols of common impairments.
CONCLUSIONS
PFTs interpretation must be complemented with clinical expertise and consider the inherent biological variability of the test and the uncertainty of the test result to ensure appropriate interpretation of an individual's lung function measurements
At home parent-administered dressing changes in paediatric burns aftercare: Interviews on parents' experiences of treatment.
No full textOBJECTIVE
Paediatric burn injuries present physical and psychosocial effects for children and their parents, including disruption to family life. Some burns services in the UK enable parents to administer dressing changes at home to reduce the number of hospital visits. To date, there is no research on parents' experiences of administering dressing changes. The aim of this study was to describe parents' experiences of administering dressing changes in paediatric burns aftercare.
METHODS
Semi-structured research interviews were conducted with a purposive sample of parents recruited from a paediatric burns centre in the UK. The interview addressed the initial offer of at-home dressing changes by clinicians; parental decision-making in relation to dressing changes; training and support received; and the experience of administering dressing changes, including practical and emotional considerations. Thematic analysis of the data was informed by the framework approach, including associative analysis using demographic and clinical characteristics.
RESULTS
Seventeen participants were interviewed. Three themes of parents' experiences of administering dressing changes were identified including (1) Parental Identity concerning the newly undertaken responsibility and the impact on the parental role; (2) Challenges, physical or emotional, confronted or lessened by administering dressing changes; and (3) Reassurance provided by healthcare professionals and others to support parents to adopt and maintain parent-administered dressing changes.
CONCLUSION
The qualitative data reported here indicates that parents want to be involved in their child's care by administering dressing changes at home, provided they receive sufficient reassurance that they are able to manage the severity of their child's burn. Parents' concerns about the effectiveness of their dressing changes lacks empirical basis, and this study provides preliminary data to support the development and evaluation of best practice guidance for parent-administered dressing changes in paediatric burns aftercare
European Expert Consensus on Practical Management of Specific Aspects of Parathyroid Disorders in Adults and in Pregnancy: Recommendations of the ESE Educational Program of Parathyroid Disorders.
No full textThis European expert consensus statement provides recommendations for the diagnosis and management of primary hyperparathyroidism (PHPT), chronic hypoparathyroidism in adults (HypoPT), and parathyroid disorders in relation to pregnancy and lactation. Specified areas of interest and unmet needs identified by experts at the second ESE Educational Program of Parathyroid Disorders (PARAT) in 2019, were discussed during two virtual workshops in 2021, and subsequently developed by working groups with interest in the specified areas. PHPT is a common endocrine disease. However, its differential diagnosing to familial hypocalciuric hypercalcemia (FHH), the definition and clinical course of normocalcemic PHPT, and the optimal management of its recurrence after surgery represent areas of uncertainty requiring clarifications. HypoPT is an orphan disease characterized by low calcium concentrations due to insufficient PTH secretion, most often secondary to neck surgery. Prevention and prediction of surgical injury to the parathyroid glands are essential to limit the disease-related burden. Long-term treatment modalities including the place for PTH replacement therapy and the optimal biochemical monitoring and imaging surveillance for complications to treatment in chronic HypoPT, need to be refined. The physiological changes in calcium metabolism occurring during pregnancy and lactation modify the clinical presentation and management of parathyroid disorders in these periods of life. Modern interdisciplinary approaches to PHPT and HypoPT in pregnant and lactating women and their newborns children are proposed. The recommendations on clinical management presented here will serve as background for further educational material aimed for a broader clinical audience, and were developed with focus on endocrinologists in training
S-GRAS score for prognostic classification of adrenocortical carcinoma: an international, multicenter ENSAT study
No full textObjective
Adrenocortical carcinoma (ACC) has an aggressive but variable clinical course. Prognostic stratification based on the European Network for the Study of Adrenal Tumours stage and Ki67 index is limited. We aimed to demonstrate the prognostic role of a points-based score (S-GRAS) in a large cohort of patients with ACC.
Design
This is a multicentre, retrospective study on ACC patients who underwent adrenalectomy.
Methods
The S-GRAS score was calculated as a sum of the following points: tumour stage (1-2 = 0; 3 = 1; 4 = 2), grade (Ki67 index 0-9% = 0; 10-19% = 1; ≥20% = 2 points), resection status (R0 = 0; RX = 1; R1 = 2; R2 = 3), age (<50 years = 0; ≥50 years = 1), symptoms (no = 0; yes = 1), and categorised, generating four groups (0-1, 2-3, 4-5, and 6-9). Endpoints were progression-free survival (PFS) and disease-specific survival (DSS). The discriminative performance of S-GRAS and its components was tested by Harrell's Concordance index (C-index) and Royston-Sauerbrei's R2D statistic.
Results
We included 942 ACC patients. The S-GRAS score showed superior prognostic performance for both PFS and DSS, with best discrimination obtained using the individual scores (0-9) (C-index = 0.73, R2D = 0.30, and C-index = 0.79, R2D = 0.45, respectively, all P < 0.01vs each component). The superiority of S-GRAS score remained when comparing patients treated or not with adjuvant mitotane (n = 481 vs 314). In particular, the risk of recurrence was significantly reduced as a result of adjuvant mitotane only in patients with S-GRAS 4-5.
Conclusion
The prognostic performance of S-GRAS is superior to tumour stage and Ki67 in operated ACC patients, independently from adjuvant mitotane. S-GRAS score provides a new important guide for personalised management of ACC (i.e. radiological surveillance and adjuvant treatment)
Prognostic implications of histological organ involvement in retroperitoneal sarcoma.
No full textBACKGROUND
The prognostic significance of histological organ involvement by retroperitoneal sarcoma subtype is unknown. The present study aimed to describe organ involvement across the subtypes, and the implications for survival.
METHODS
Patients undergoing surgery for primary retroperitoneal sarcoma at the Queen Elizabeth Hospital, Birmingham from April 2005 to September 2018 were identified retrospectively. Histological organ involvement was classed as pushing, infiltrative or neither. Univariable and multivariable Cox regression models were produced to analyse the association between histological organ involvement and both overall (OS) and recurrence-free (RFS) survival for the cohort as a whole, and by histological subtype.
RESULTS
Data were available for a total of 197 patients, of whom 171 (86.8 per cent) had at least one organ resected. Infiltrative organ behaviour was seen in 37 patients (18.8 per cent), and pushing behaviour in 67 (34.0 per cent). For the cohort as a whole, infiltration (hazard ratio (HR) 4.32, 95 per cent c.i. 2.35 to 7.93; P < 0.001), but not pushing (HR 1.62, 0.90 to 2.92; P = 0.106), was associated with significantly shorter OS, in comparisons with a group with neither of these behaviours. However, this effect was found to differ significantly by histological subtype (P = 0.009). For patients with dedifferentiated liposarcoma, there was no significant association between tumour behaviour and either OS (P = 0.508) or RFS (P = 0.313). However, in leiomyosarcoma, infiltrative behaviour was associated with shorter OS (P = 0.002), and both infiltrative (P < 0.001) and pushing (P = 0.010) behaviours were associated with shorter RFS, compared with tumours with neither behaviour. Multivariable analyses of both OS and RFS returned similar results.
CONCLUSION
The prognostic implications of organ involvement in retroperitoneal sarcoma vary by histological subtype
Large cell neuroendocrine lung carcinoma: consensus statement from The British Thoracic Oncology Group and the Association of Pulmonary Pathologists.
No full textOver the past 10 years, lung cancer clinical and translational research has been characterised by exponential progress, exemplified by the introduction of molecularly targeted therapies, immunotherapy and chemo-immunotherapy combinations to stage III and IV non-small cell lung cancer. Along with squamous and small cell lung cancers, large cell neuroendocrine carcinoma (LCNEC) now represents an area of unmet need, particularly hampered by the lack of an encompassing pathological definition that can facilitate real-world and clinical trial progress. The steps we have proposed in this article represent an iterative and rational path forward towards clinical breakthroughs that can be modelled on success in other lung cancer pathologies
Clinical trials in amyotrophic lateral sclerosis: a systematic review and perspective.
No full textAmyotrophic lateral sclerosis is a progressive and devastating neurodegenerative disease. Despite decades of clinical trials, effective disease-modifying drugs remain scarce. To understand the challenges of trial design and delivery, we performed a systematic review of Phase II, Phase II/III and Phase III amyotrophic lateral sclerosis clinical drug trials on trial registries and PubMed between 2008 and 2019. We identified 125 trials, investigating 76 drugs and recruiting more than 15 000 people with amyotrophic lateral sclerosis. About 90% of trials used traditional fixed designs. The limitations in understanding of disease biology, outcome measures, resources and barriers to trial participation in a rapidly progressive, disabling and heterogenous disease hindered timely and definitive evaluation of drugs in two-arm trials. Innovative trial designs, especially adaptive platform trials may offer significant efficiency gains to this end. We propose a flexible and scalable multi-arm, multi-stage trial platform where opportunities to participate in a clinical trial can become the default for people with amyotrophic lateral sclerosis
Low Consciousness in a Patient with Venous Air Embolism Introduced via Peripheral Vascular Cannulation.
No full textIntroduction
Venous air embolism is rarely seen, can be fatal and is associated mostly with large central venous catheters and mechanical ventilation. Some cases due to peripheral intravenous access have also been reported.
Case Description
We present a case of intracranial venous air embolism most likely secondary to peripheral cannulation. On admission, the patient was drowsy with a suddenly deteriorating Glasgow coma scale score. This case emphasizes cautious cannula insertion and close monitoring of the patient in the event of complications.
Conclusion
Intravenous cannulation is common but care should be taken to avoid catastrophic complications. Consider air embolism as the differential diagnosis if a patient has a low level of consciousness after an intravenous cannula is inserted.
LEARNING POINTS
A reduced level of consciousness in a patient should be quickly recognised and the differential diagnosis of air embolism considered.Peripheral vascular cannulation should be carefully monitored.High-flow oxygen and efficient monitoring of the patient are required