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The Lancet. Digital Health Nov 2023Sudden cardiac arrest is a global public health problem with a mortality rate of more than 90%. Prearrest warning symptoms could be harnessed using digital technology to...
BACKGROUND
Sudden cardiac arrest is a global public health problem with a mortality rate of more than 90%. Prearrest warning symptoms could be harnessed using digital technology to potentially improve survival outcomes. We aimed to estimate the strength of association between symptoms and imminent sudden cardiac arrest.
METHODS
We conducted a case-control study of individuals with sudden cardiac arrest and participants without sudden cardiac arrest who had similar symptoms identified from two US community-based studies of patients with sudden cardiac arrest in California state, USA (discovery population; the Ventura Prediction of Sudden Death in Multi-Ethnic Communities [PRESTO] study), and Oregon state, USA (replication population; the Oregon Sudden Unexpected Death Study [SUDS]). Participant data were obtained from emergency medical services reports for people aged 18-85 years with witnessed sudden cardiac arrest (between Feb 1, 2015, and Jan 31, 2021) and an inclusion symptom. Data were also obtained from corresponding control populations without sudden cardiac arrest who were attended by emergency medical services for similar symptoms (between Jan 1 and Dec 31, 2019). We evaluated the association of symptoms with sudden cardiac arrest in the discovery population and validated our results in the replication population by use of logistic regression models.
FINDINGS
We identified 1672 individuals with sudden cardiac arrest from the PRESTO study, of whom 411 patients (mean age 65·7 [SD 12·4] years; 125 women and 286 men) were included in the analysis for the discovery population. From a total of 76 734 calls to emergency medical services, 1171 patients (mean age 61·8 [SD 17·3] years; 643 women, 514 men, and 14 participants without data for sex) were included in the control group. Patients with sudden cardiac arrest were more likely to have dyspnoea (168 [41%] of 411 vs 262 [22%] of 1171; p<0·0001), chest pain (136 [33%] vs 296 [25%]; p=0·0022), diaphoresis (50 [12%] vs 90 [8%]; p=0·0059), and seizure-like activity (43 [11%] vs 77 [7%], p=0·011). Symptom frequencies and patterns differed significantly by sex. Among men, chest pain (odds ratio [OR] 2·2, 95% CI 1·6-3·0), dyspnoea (2·2, 1·6-3·0), and diaphoresis (1·7, 1·1-2·7) were significantly associated with sudden cardiac arrest, whereas among women, only dyspnoea was significantly associated with sudden cardiac arrest (2·9, 1·9-4·3). 427 patients with sudden cardiac arrest (mean age 62·2 [SD 13·5]; 122 women and 305 men) were included in the analysis for the replication population and 1238 patients (mean age 59·3 [16·5] years; 689 women, 548 men, and one participant missing data for sex) were included in the control group. Findings were mostly consistent in the replication population; however, notable differences included that, among men, diaphoresis was not associated with sudden cardiac arrest and chest pain was associated with sudden cardiac arrest only in the sex-stratified multivariable analysis.
INTERPRETATION
The prevalence of warning symptoms was sex-specific and differed significantly between patients with sudden cardiac arrest and controls. Warning symptoms hold promise for prediction of imminent sudden cardiac arrest but might need to be augmented with additional features to maximise predictive power.
FUNDING
US National Heart Lung and Blood Institute.
Topics: Male; Humans; Female; Aged; Middle Aged; Case-Control Studies; Heart Arrest; Death, Sudden, Cardiac; Chest Pain; Dyspnea
PubMed: 37640599
DOI: 10.1016/S2589-7500(23)00147-4 -
HNO Aug 2023
Topics: Humans; Dyspnea
PubMed: 37245174
DOI: 10.1007/s00106-023-01313-x -
Pulmonology Dec 2023The diagnosis and severity assessment of COPD relies on spirometry, and in particular the FEV1. However, it has been proposed that hyperinflation and air-trapping are... (Observational Study)
Observational Study
INTRODUCTION
The diagnosis and severity assessment of COPD relies on spirometry, and in particular the FEV1. However, it has been proposed that hyperinflation and air-trapping are better predictors of exercise capacity and mortality than the FEV1.
RESEARCH
QUESTION: Does static hyperinflation predict exercise capacity?
METHODS
We conducted an observational prospective study. Patients with COPD referred to the lung function laboratory were consecutively recruited. Patients with hyperinflation (the experimental group) were compared to patients without hyperinflation (the control group). The sample sizes were determined assuming an effect size of 0.5 and a power of 0.80.
RESULTS
We recruited 124 participants, of whom 87% were male, the mean age was 66.1 ± 8.8 years. 67% were symptomatic (GOLD B or D). Airflow limitation was moderate to severe in the majority of patients (median FEV1 47%, IQR 38-65%) and 43% of patients had static hyperinflation. The median 6MWD was 479 meters (404-510) and peak workload in CPET was 64 watts (46-88) with peak VO2 1.12 L/min, 0.89-1.31 L/min. Patients with lower FEV1, DLCO and IC/TLC and higher RV/TLC had reduced exercise capacity in both 6MWT and CPET, measured as lower distance, greater desaturation and ∆Borg dyspnoea, and reduced workload, peak VO2 and peak VE and higher desaturation and ventilatory limitation (VE/MVV). An IC/TLC < 0.33 predicted reduced exercise performance (peak O2 <60%). Dyspnoea assessed by mMRC and QoL measured by CAT and CCQ were also worse in the hyperinflation in COPD patients.
CONCLUSION
In COPD patients, IC/TLC and RV/TLC are valuable predictors of exercise performance in both 6MWT and CPET and PRO.
Topics: Humans; Male; Middle Aged; Aged; Female; Pulmonary Disease, Chronic Obstructive; Prospective Studies; Exercise Tolerance; Quality of Life; Dyspnea
PubMed: 34629326
DOI: 10.1016/j.pulmoe.2021.08.011 -
Tidsskrift For Den Norske Laegeforening... May 2024A woman in her seventies presented to the accident and emergency department (A&E) with shortness of breath that had increased over a period of three weeks. She had a...
BACKGROUND
A woman in her seventies presented to the accident and emergency department (A&E) with shortness of breath that had increased over a period of three weeks. She had a history of COPD, hypertension and polymyalgia rheumatica. A medication error involving methotrexate, used for autoimmune diseases, was discovered during her medical history review.
CASE PRESENTATION
The patient arrived with stable vital signs, including 94 % oxygen saturation and a respiratory rate of 20 breaths/min. She had been taking 2.5 mg of methotrexate daily for the past three weeks instead of the prescribed weekly dose of 15 mg. Other examinations revealed no alarming findings, except for a slightly elevated D-dimer level.
INTERPRETATION
Considering her medical history and exclusion of other differential diagnoses, methotrexate toxicity was suspected. The patient was admitted to the hospital and intravenous folinic acid was initiated as an antidote treatment. Five days later, the patient was discharged with an improvement in the shortness of breath. This case underscores the importance of effective communication in health care, particularly in complex cases like this, where understanding dosages and administration is crucial. Medical history, clinical examinations and medication reviews, often involving clinical pharmacists, are vital in the A&E to reveal medication errors.
Topics: Humans; Medication Errors; Female; Methotrexate; Aged; Dyspnea; Leucovorin; Antidotes; Antirheumatic Agents
PubMed: 38747669
DOI: 10.4045/tidsskr.23.0657 -
International Journal of Chronic... 2023Chronic obstructive pulmonary disease (COPD) has been associated with worse clinical evolution/survival during a hospitalization for SARS-CoV2 (COVID-19). The objective... (Observational Study)
Observational Study
BACKGROUND
Chronic obstructive pulmonary disease (COPD) has been associated with worse clinical evolution/survival during a hospitalization for SARS-CoV2 (COVID-19). The objective of this study was to learn the situation of these patients at discharge as well as the risk of re-admission/mortality in the following 12 months.
METHODS
We carried out a subanalysis of the RECOVID registry. A multicenter, observational study that retrospectively collected data on severe acute COVID-19 episodes and follow-up visits for up to a year in survivors. The data collection protocol includes general demographic data, smoking, comorbidities, pharmacological treatment, infection severity, complications during hospitalization and required treatment. At discharge, resting oxygen saturation (SpO2), dyspnea according to the mMRC (modified Medical Research Council) scale and long-term oxygen therapy prescription were recorded. The follow-up database included the clinical management visits at 6 and 12 months, where re-admission and mortality were recorded.
RESULTS
A total of 2047 patients were included (5.6% had a COPD diagnosis). At discharge, patients with COPD had greater dyspnea and a greater need for prescription home oxygen. After adjusting for age, sex and Charlson comorbidity index, patients with COPD had a greater risk of hospital re-admission due to respiratory causes (HR 2.57 [1.35-4.89], p = 0.004), with no significant differences in survival.
CONCLUSION
Patients with COPD who overcome a serious SARS-CoV2 infection show a worse clinical situation at discharge and a greater risk of re-admission for respiratory causes.
Topics: Humans; Pulmonary Disease, Chronic Obstructive; COVID-19; Retrospective Studies; RNA, Viral; SARS-CoV-2; Hospitalization; Dyspnea; Respiratory Insufficiency; Oxygen
PubMed: 37955022
DOI: 10.2147/COPD.S428316 -
The Clinical Respiratory Journal Aug 2023The prognosis for acute exacerbation of chronic obstructive pulmonary disease (AECOPD) is not optimistic, and severe AECOPD leads to an increased risk of mortality.... (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
The prognosis for acute exacerbation of chronic obstructive pulmonary disease (AECOPD) is not optimistic, and severe AECOPD leads to an increased risk of mortality. Prediction models help distinguish between high- and low-risk groups. At present, many prediction models have been established and validated, which need to be systematically reviewed to screen out more suitable models that can be used in the clinic and provide evidence for future research.
METHODS
We searched PubMed, EMBASE, Cochrane Library and Web of Science databases for studies on risk models for AECOPD mortality from their inception to 10 April 2022. The risk of bias was assessed using the prediction model risk of bias assessment tool (PROBAST). Stata software (version 16) was used to synthesize the C-statistics for each model.
RESULTS
A total of 37 studies were included. The development of risk prediction models for mortality in patients with AECOPD was described in 26 articles, in which the most common predictors were age (n = 17), dyspnea grade (n = 11), altered mental status (n = 8), pneumonia (n = 6) and blood urea nitrogen (BUN, n = 6). The remaining 11 articles only externally validated existing models. All 37 studies were evaluated at a high risk of bias using PROBAST. We performed a meta-analysis of five models included in 15 studies. DECAF (dyspnoea, eosinopenia, consolidation, acidemia and atrial fibrillation) performed well in predicting in-hospital death [C-statistic = 0.91, 95% confidence interval (CI): 0.83, 0.98] and 90-day death [C-statistic = 0.76, 95% CI: 0.69, 0.82] and CURB-65 (confusion, urea, respiratory rate, blood pressure and age) performed well in predicting 30-day death [C-statistic = 0.74, 95% CI: 0.70, 0.77].
CONCLUSIONS
This study provides information on the characteristics, performance and risk of bias of a risk model for AECOPD mortality. This pooled analysis of the present study suggests that the DECAF performs well in predicting in-hospital and 90-day deaths. Yet, external validation in different populations is still needed to prove this performance.
Topics: Humans; Hospital Mortality; Prognosis; Dyspnea; Pulmonary Disease, Chronic Obstructive; Risk Assessment; Disease Progression
PubMed: 36945821
DOI: 10.1111/crj.13606 -
Annals of Medicine and Surgery (2012) Nov 2023Platypnea-orthodeoxia syndrome is defined as dyspnoea and deoxygenation when changing from a recumbent to an upright position. Post-Covid-19 sequelae can induce or...
INTRODUCTION AND IMPORTANCE
Platypnea-orthodeoxia syndrome is defined as dyspnoea and deoxygenation when changing from a recumbent to an upright position. Post-Covid-19 sequelae can induce or exacerbate pulmonary hypertension and thereby render a previously mild and asymptomatic platypnea-orthodeoxia syndrome to manifest with new or worsening symptoms.
CASE PRESENTATION
The authors present the case of an 80-year-old man who following an episode of moderate-severe Covid-19 infection developed type I respiratory failure that required hospital discharge with long-term oxygen therapy. He had a background history of postural paroxysmal hypoxaemia which had previously raised the suspicion of a right-to-left shunt through either a patent foramen ovale, atrial septal defect or an intrapulmonary arteriovenous malformation. However, given the low burden of symptoms this was not explored further. Following recovery from Covid-19 infection, the patient experienced marked dyspnoea and oxygen desaturation in an upright position that was relieved by a return to a supine position.
DISCUSSION AND CONCLUSION
Persistent dyspnoea and hypoxia are common symptoms in patients who experience post-Covid-19 syndrome. However, when patients with prior moderate-to-severe Covid-19 illness present with new onset breathlessness and/or desaturation that is worsened in an upright position, platypnea-orthodeoxia syndrome should be considered.
PubMed: 37915703
DOI: 10.1097/MS9.0000000000001383 -
Respiratory Medicine 2023Chronic respiratory diseases represent a significant burden of disease globally, with high morbidity and mortality. Individuals living with these conditions, as well as... (Review)
Review
INTRODUCTION
Chronic respiratory diseases represent a significant burden of disease globally, with high morbidity and mortality. Individuals living with these conditions, as well as their families, face considerable physical, emotional and social challenges. Palliative care might be a valuable approach to address their complex needs, but evidence to prove this is still scarce.
OBJECTIVES
This systematic review aimed to study the effectiveness of palliative care interventions in health-related outcomes (quality of life, symptom control, symptom burden, psychological well-being, advance care planning, use of health services, and survival) in chronic respiratory patients.
METHODS
Pubmed, Cochrane and Web of Science were searched for trials published in the last 10 years, comparing palliative care interventions to usual care, in patients with chronic respiratory diseases. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were followed.
RESULTS
Eight studies were included, seven randomized controlled trials and one cluster-controlled trial; the former with moderate risk of bias and the latter with high risk of bias. Findings revealed that palliative interventions improve breathlessness control and advance care planning. There were no significant differences for the other outcomes.
CONCLUSIONS
Palliative care appears to have a beneficial effect on breathlessness, one of the most distressing symptoms in patients suffering from chronic respiratory diseases and allows for advanced care planning. Additional research, with more robust trials, is needed to draw further conclusions about other health-related outcomes.
Topics: Humans; Palliative Care; Quality of Life; Advance Care Planning; Dyspnea; Anxiety
PubMed: 37717791
DOI: 10.1016/j.rmed.2023.107411 -
British Journal of Hospital Medicine... Aug 2023Post-thrombotic syndrome and chronic thromboembolic pulmonary hypertension are two distinct clinical syndromes associated with adverse patient outcomes following a... (Review)
Review
Post-thrombotic syndrome and chronic thromboembolic pulmonary hypertension are two distinct clinical syndromes associated with adverse patient outcomes following a venous thromboembolism. Clinical manifestations of post-thrombotic syndrome include persistent pain, swelling and ultimately venous ulceration following a deep venous thrombosis. Patients experiencing chronic thromboembolic pulmonary hypertension may have symptoms ranging from exertional dyspnoea to overt right heart failure. From a physician's perspective, the most effective preventative strategy is good quality anticoagulation for prophylaxis of primary and secondary venous thromboembolism. The treatment of post-thrombotic syndrome mainly involves lifestyle modifications alongside the use of elastic compression stockings while patients with chronic thromboembolic pulmonary hypertension should be offered targeted surgical and medical treatment options available at expert centres. Further research is warranted for both conditions to determine the role of direct oral anticoagulants when used with a preventive or therapeutic intent.
Topics: Humans; Hypertension, Pulmonary; Venous Thromboembolism; Dyspnea; Heart Failure; Life Style
PubMed: 37646549
DOI: 10.12968/hmed.2023.0114 -
Annals of Palliative Medicine Jan 2024Death rattle (DR) is a common symptom in dying patients, caused by secretions in the upper airway. Experiences regarding DR differ among patients, relatives, and health... (Review)
Review
BACKGROUND AND OBJECTIVE
Death rattle (DR) is a common symptom in dying patients, caused by secretions in the upper airway. Experiences regarding DR differ among patients, relatives, and health professionals. However, evidence of patients', relatives', and health professionals' needs for DR management in order to improve their experiences is lacking. In addition, little is known about the actual effects of non-pharmacological interventions on DR intensity or DR-related distress. This narrative review aims to explore (I) the experiences and needs of patients, relatives, and health professionals regarding DR sound and its management; and (II) studies on non-pharmacological interventions in DR management.
METHODS
Based on a PubMed literature search with the free-text term "death rattle", nine studies published in the last ten years were included.
KEY CONTENT AND FINDINGS
No significant correlation between DR intensity and patients' respiratory distress could be found. Some relatives experience high levels of distress and express a need for DR care improvement. Health professionals are often influenced in their decision-making to intervene by external pressure or their need 'to do something'. Both repositioning and explaining DR to relatives are seen as useful first-line non-pharmacological interventions by health professionals. The severity of DR does not improve when suctioning is performed before starting anticholinergics.
CONCLUSIONS
Variation in DR-related experiences and needs exists among relatives and health professionals. More research is needed into the effectiveness of non-pharmacological interventions for DR management and the most suitable measurement tools to objectify DR-related outcomes.
Topics: Humans; Respiratory Sounds; Dyspnea; Health Personnel
PubMed: 38073292
DOI: 10.21037/apm-23-507