-
BMJ Open May 2024This study aimed to describe the clinical characteristics of adults with suspected acute community-acquired pneumonia (CAP) on hospitalisation, evaluate their prediction...
Community-acquired pneumonia: use of clinical characteristics of acutely admitted patients for the development of a diagnostic model - a cross-sectional multicentre study.
OBJECTIVES
This study aimed to describe the clinical characteristics of adults with suspected acute community-acquired pneumonia (CAP) on hospitalisation, evaluate their prediction performance for CAP and compare the performance of the model to the initial assessment of the physician.
DESIGN
Cross-sectional, multicentre study.
SETTING
The data originated from the INfectious DisEases in Emergency Departments study and were collected prospectively from patient interviews and medical records. The study included four Danish medical emergency departments (EDs) and was conducted between 1 March 2021 and 28 February 2022.
PARTICIPANTS
A total of 954 patients admitted with suspected infection were included in the study.
PRIMARY AND SECONDARY OUTCOME
The primary outcome was CAP diagnosis assessed by an expert panel.
RESULTS
According to expert evaluation, CAP had a 28% prevalence. 13 diagnostic predictors were identified using least absolute shrinkage and selection operator regression to build the prediction model: dyspnoea, expectoration, cough, common cold, malaise, chest pain, respiratory rate (>20 breaths/min), oxygen saturation (<96%), abnormal chest auscultation, leucocytes (<3.5×10/L or >8.8×10/L) and neutrophils (>7.5×10/L). C reactive protein (<20 mg/L) and having no previous event of CAP contributed negatively to the final model. The predictors yielded good prediction performance for CAP with an area under the receiver-operator characteristic curve (AUC) of 0.85 (CI 0.77 to 0.92). However, the initial diagnosis made by the ED physician performed better, with an AUC of 0.86 (CI 84% to 89%).
CONCLUSION
Typical respiratory symptoms combined with abnormal vital signs and elevated infection biomarkers were predictors for CAP on admission to an ED. The clinical value of the prediction model is questionable in our setting as it does not outperform the clinician's assessment. Further studies that add novel diagnostic tools and use imaging or serological markers are needed to improve a model that would help diagnose CAP in an ED setting more accurately.
TRIAL REGISTRATION NUMBER
NCT04681963.
Topics: Humans; Community-Acquired Infections; Cross-Sectional Studies; Male; Female; Middle Aged; Aged; Pneumonia; Emergency Service, Hospital; Hospitalization; Denmark; Adult; ROC Curve; Prospective Studies; C-Reactive Protein
PubMed: 38816044
DOI: 10.1136/bmjopen-2023-079123 -
PeerJ 2024During the COVID-19 pandemic, universal mask-wearing became one of the main public health interventions. Because of this, most physical examinations, including lung...
OBJECTIVE
During the COVID-19 pandemic, universal mask-wearing became one of the main public health interventions. Because of this, most physical examinations, including lung auscultation, were done while patients were wearing surgical face masks. The aim of this study was to investigate whether mask wearing has an impact on pulmonologist assessment during auscultation of the lungs.
METHODS
This was a repeated measures crossover design study. Three pulmonologists were instructed to auscultate patients with previously verified prolonged expiration, wheezing, or crackles while patients were wearing or not wearing masks (physician and patients were separated by an opaque barrier). As a measure of pulmonologists' agreement in the assessment of lung sounds, we used Fleiss kappa (K).
RESULTS
There was no significant difference in agreement on physician assessment of lung sounds in all three categories (normal lung sound, duration of expiration, and adventitious lung sound) whether the patient was wearing a mask or not, but there were significant differences among pulmonologists when it came to agreement of lung sound assessment.
CONCLUSION
Clinicians and health professionals are safer from respiratory infections when they are wearing masks, and patients should be encouraged to wear masks because our research proved no significant difference in agreement on pulmonologists' assessment of auscultated lung sounds whether or not patients wore masks.
Topics: Humans; Masks; COVID-19; Cross-Over Studies; Auscultation; Male; Respiratory Sounds; Female; SARS-CoV-2; Middle Aged; Adult; Pandemics; Pulmonologists; Aged
PubMed: 38803582
DOI: 10.7717/peerj.17368 -
Sensors (Basel, Switzerland) May 2024Cervical auscultation is a simple, noninvasive method for diagnosing dysphagia, although the reliability of the method largely depends on the subjectivity and experience...
Cervical auscultation is a simple, noninvasive method for diagnosing dysphagia, although the reliability of the method largely depends on the subjectivity and experience of the evaluator. Recently developed methods for the automatic detection of swallowing sounds facilitate a rough automatic diagnosis of dysphagia, although a reliable method of detection specialized in the peculiar feature patterns of swallowing sounds in actual clinical conditions has not been established. We investigated a novel approach for automatically detecting swallowing sounds by a method wherein basic statistics and dynamic features were extracted based on acoustic features: Mel Frequency Cepstral Coefficients and Mel Frequency Magnitude Coefficients, and an ensemble learning model combining Support Vector Machine and Multi-Layer Perceptron were applied. The evaluation of the effectiveness of the proposed method, based on a swallowing-sounds database synchronized to a video fluorographic swallowing study compiled from 74 advanced-age patients with dysphagia, demonstrated an outstanding performance. It achieved an F1-micro average of approximately 0.92 and an accuracy of 95.20%. The method, proven effective in the current clinical recording database, suggests a significant advancement in the objectivity of cervical auscultation. However, validating its efficacy in other databases is crucial for confirming its broad applicability and potential impact.
Topics: Humans; Deglutition; Deglutition Disorders; Auscultation; Databases, Factual; Support Vector Machine; Male; Female; Aged; Machine Learning; Algorithms; Sound
PubMed: 38793908
DOI: 10.3390/s24103057 -
BMC Medical Education May 2024Cardiac auscultation is an efficient and effective diagnostic tool, especially in low-income countries where access to modern diagnostic methods remains difficult. This...
BACKGROUND
Cardiac auscultation is an efficient and effective diagnostic tool, especially in low-income countries where access to modern diagnostic methods remains difficult. This study aimed to evaluate the effect of a digitally enhanced cardiac auscultation learning method on medical students' performance and satisfaction.
METHODS
We conducted a double-arm parallel controlled trial, including newly admitted 4th -year medical students enrolled in two medical schools in Yaoundé, Cameroon and allocated into two groups: the intervention group (benefiting from theoretical lessons, clinical internship and the listening sessions of audio recordings of heart sounds) and the control group (benefiting from theoretical lessons and clinical internship). All the participants were subjected to a pretest before the beginning of the training, evaluating theoretical knowledge and recognition of cardiac sounds, and a post-test at the eighth week of clinical training associated with the evaluation of satisfaction. The endpoints were the progression of knowledge score, skills score, total (knowledge and skills) score and participant satisfaction.
RESULTS
Forty-nine participants (27 in the intervention group and 22 in the control group) completed the study. The knowledge progression (+ 26.7 versus + 7.5; p ˂0.01) and the total progression (+ 22.5 versus + 14.6; p ˂ 0.01) were higher in the intervention group with a statistically significant difference compared to the control group. There was no significant difference between the two groups regarding skills progression (+ 25 versus + 17.5; p = 0.27). Satisfaction was higher in general in the intervention group (p ˂ 0.01), which recommended this method compared to the control group.
CONCLUSION
The learning method of cardiac auscultation reinforced by the listening sessions of audio recordings of heart sounds improves medical students' performances (knowledge and global - knowledge and skills) who find it satisfactory and recommendable.
TRIAL REGISTRATION
This trial has been registered the 29/11/2019 in the Pan African Clinical Trials Registry ( http://www.pactr.org ) under unique identification number PACTR202001504666847 and the protocol has been published in BMC Medical Education.
Topics: Humans; Cameroon; Heart Auscultation; Male; Female; Clinical Competence; Students, Medical; Educational Measurement; Education, Medical, Undergraduate; Young Adult; Computer-Assisted Instruction
PubMed: 38783278
DOI: 10.1186/s12909-024-05501-3 -
The Egyptian Heart Journal : (EHJ) :... May 2024Cardiac myxomas present a diagnostic challenge due to their ability to mimic various cardiovascular and systemic conditions. Timely identification is crucial for...
BACKGROUND
Cardiac myxomas present a diagnostic challenge due to their ability to mimic various cardiovascular and systemic conditions. Timely identification is crucial for implementing surgical intervention and averting life-threatening complications.
CASE PRESENTATION
We reported the case of a 49-year-old male patient who presented sudden legs weakness and slurred speech and was admitted 10 h later in emergency department. Physical examination was significant for paraparesis and paraphasia. Cardiac and carotid auscultation was normal. CT brain revealed multiple acute ischemic strokes and MRA was suggestive of cerebral vasculitis. As pre-therapy assessment, the EKG revealed no electrical abnormalities and the chest X-ray showed signs of left atrial enlargement. Transthoracic and transesophageal echocardiography showed a left atrial mass attached to the interatrial septum, measuring 9*5*4 cm and extending into the left ventricular cavity during diastole, which suggested the diagnosis of left atrial myxoma. The patient was referred for open-heart surgery and histopathological examination confirmed the diagnosis of myxoma. The patient weaned off from cardiopulmonary bypass and the postoperative period was uneventful.
CONCLUSION
We reported an interesting case with an unusual and misleading neurological presentation of a cardiac myxoma. The unpredictability of serious complications occurrence must awaken our medical flair, for an early diagnosis among a long list of differentials.
PubMed: 38782794
DOI: 10.1186/s43044-024-00488-0 -
African Journal of Paediatric Surgery :... May 2024Evaluation of quality of life (QoL) in paediatric surgical patients has not always received enough attention in the past. Our aim was to follow up patients with...
BACKGROUND
Evaluation of quality of life (QoL) in paediatric surgical patients has not always received enough attention in the past. Our aim was to follow up patients with abdominal wall defects for a decade and (1) to analyse children's view on QoL and to analyse parent's view on QoL, (2) to evaluate satisfaction and psychological problems, (3) to assess present complaints including subjective aspects such as food intake, reduced appetite, pain in scar area and general abdominal pain and (4) verifiable clinical symptoms assessed through a physical examination and ultrasound. It was hypothesised that QoL would differ from gastroschisis (GS) and omphalocele (OC) children depending on the type of abdominal wall defect.
AIMS AND OBJECTIVES
A retrospective case-control design was used to compare children with GS (n = 36) and OC (n = 18). A clinical examination, including abdominal inspection, palpation and auscultation of bowel sounds with abdominal ultrasound, was offered, combined with a structured interview and specific QoL questionnaire (KINDL®). The focus was on QoL, child development, present complaints and satisfaction with the cosmetic outcome.
RESULTS
During clinical examinations with ultrasound, GS children were significantly more likely to have bowel loops stuck at the scar area (P = 0.008) with bowel malrotation and abnormal appendix position, compared to OC children (P = 0.037). They were significantly more likely to report irregular stools (P = 0.02) but were satisfied with the cosmetic outcome of the abdominal skin scar in 81% of cases. The KINDL® evaluation showed in the dimensions of QoL, namely 'body awareness', 'mental health', 'self-esteem', 'family', 'friends' and 'school', that there were no significant differences to healthy children. OC/GS parents were satisfied with their children's physical development and QoL, noting no limitations in normal daily activities. Parents of OC children reported suffering from OC/GS-associated problems (P = 0.028) at the time point of interview.
CONCLUSION
Subjective QoL did not differ significantly between OC and GS children. The satisfaction with the cosmetic outcome of the abdominal skin scar was good. On ultrasound examination, adherent bowel loops and bowel malrotation with resulting stool irregularities affect GS children. OC children's parents reported suffering from OC/OS-associated problems, and all parents need to be educated about the symptoms of recurrent sub-ileus events or atypical appendicitis.
PubMed: 38770839
DOI: 10.4103/ajps.ajps_140_22 -
The Lancet. Global Health Jun 2024Early detection and diagnosis of acute rheumatic fever and rheumatic heart disease are key to preventing progression, and echocardiography has an important diagnostic... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Early detection and diagnosis of acute rheumatic fever and rheumatic heart disease are key to preventing progression, and echocardiography has an important diagnostic role. Standard echocardiography might not be feasible in high-prevalence regions due to its high cost, complexity, and time requirement. Handheld echocardiography might be an easy-to-use, low-cost alternative, but its performance in screening for and diagnosing acute rheumatic fever and rheumatic heart disease needs further investigation.
METHODS
In this systematic review and meta-analysis, we searched Embase, MEDLINE, LILACS, and Conference Proceedings Citation Index-Science up to Feb 9, 2024, for studies on the screening and diagnosis of acute rheumatic fever and rheumatic heart disease using handheld echocardiography (index test) or standard echocardiography or auscultation (reference tests) in high-prevalence areas. We included all studies with useable data in which the diagnostic performance of the index test was assessed against a reference test. Data on test accuracy in diagnosing rheumatic heart disease, acute rheumatic fever, or carditis with acute rheumatic fever (primary outcomes) were extracted from published articles or calculated, with authors contacted as necessary. Quality of evidence was appraised using GRADE and QUADAS-2 criteria. We summarised diagnostic accuracy statistics (including sensitivity and specificity) and estimated 95% CIs using a bivariate random-effects model (or univariate random-effects models for analyses including three or fewer studies). Area under the curve (AUC) was calculated from summary receiver operating characteristic curves. Heterogeneity was assessed by visual inspection of plots. This study was registered with PROSPERO (CRD42022344081).
FINDINGS
Out of 4868 records we identified 11 studies, and two additional reports, comprising 15 578 unique participants. Pooled data showed that handheld echocardiography had high sensitivity (0·87 [95% CI 0·76-0·93]), specificity (0·98 [0·71-1·00]), and overall high accuracy (AUC 0·94 [0·84-1·00]) for diagnosing rheumatic heart disease when compared with standard echocardiography (two studies; moderate certainty of evidence), with better performance for diagnosing definite compared with borderline rheumatic heart disease. High sensitivity (0·79 [0·73-0·84]), specificity (0·85 [0·80-0·89]), and overall accuracy (AUC 0·90 [0·85-0·94]) for screening rheumatic heart disease was observed when pooling data of handheld echocardiography versus standard echocardiography (seven studies; high certainty of evidence). Most studies had a low risk of bias overall. Some heterogeneity was observed for sensitivity and specificity across studies, possibly driven by differences in the prevalence and severity of rheumatic heart disease, and level of training or expertise of non-expert operators.
INTERPRETATION
Handheld echocardiography has a high accuracy and diagnostic performance when compared with standard echocardiography for diagnosing and screening of rheumatic heart disease in high-prevalence areas.
FUNDING
World Health Organization.
TRANSLATIONS
For the Chinese, French, Italian, Persian, Portuguese, Spanish and Urdu translations of the abstract see Supplementary Materials section.
Topics: Humans; Rheumatic Heart Disease; Echocardiography; Mass Screening; World Health Organization; Practice Guidelines as Topic; Sensitivity and Specificity
PubMed: 38762298
DOI: 10.1016/S2214-109X(24)00127-X -
Cureus Apr 2024Background Pulse oximetry screening (POS) is acknowledged globally as a noninvasive method to detect critical congenital heart diseases (CCHDs) and respiratory...
Background Pulse oximetry screening (POS) is acknowledged globally as a noninvasive method to detect critical congenital heart diseases (CCHDs) and respiratory illnesses. However, its value for early diagnosis and treatment remains unrecognized in many hospitals with limited resources around the world. This study aimed to evaluate POS's application in CCHDs, persistent pulmonary hypertension (PPHN), and respiratory distress syndrome (RDS) for early diagnosis and its influence on clinical procedures in rural areas. Methods This prospective observational study included all eligible newborn infants in the regional neonatal unit of a community healthcare center. Their peripheral oxygen saturation was assessed at <24 hours and >24 hours after birth, in the right upper limb and either lower limb. An oxygen saturation of <95% or >3% difference between pre-ductal and post-ductal circulations was considered abnormal. All neonates with abnormal oxygen saturations at >24 hours after birth were subjected to another POS test within two hours of the last test. If the oxygen saturation was still abnormal, it was considered a positive POS test. The POS results were classified as oxygen saturation abnormal (<90%), abnormal (90-94%), and normal (≥95%). All neonates with a positive POS test were referred for echocardiography. Results Overall, 440 infants had documented POS results. A total of 65 (14.77%) infants had a positive POS test result, out of which 39 (8.86%) cases were diagnosed on further evaluation. Four neonates had CCHD (positive predictive value (PPV) = 6.15%), 26 had RDS (PPV = 40%), and nine had PPHN (PPV = 13.85%). Without any further delay, the doctor directed them all to a more advanced facility. Conclusion Our research showed that, in large-scale clinical settings, the addition of pulse oximetry to routine cardiac auscultation could be a reliable and feasible method to screen newborns for CCHD, PPHN, and RDS early on. Our research underscores the importance of implementing routine POS to detect CCHD, RDS, and PPHN in clinical practice.
PubMed: 38756257
DOI: 10.7759/cureus.58398 -
NPJ Digital Medicine May 2024Healthcare datasets are becoming larger and more complex, necessitating the development of accurate and generalizable AI models for medical applications. Unstructured...
Healthcare datasets are becoming larger and more complex, necessitating the development of accurate and generalizable AI models for medical applications. Unstructured datasets, including medical imaging, electrocardiograms, and natural language data, are gaining attention with advancements in deep convolutional neural networks and large language models. However, estimating the generalizability of these models to new healthcare settings without extensive validation on external data remains challenging. In experiments across 13 datasets including X-rays, CTs, ECGs, clinical discharge summaries, and lung auscultation data, our results demonstrate that model performance is frequently overestimated by up to 20% on average due to shortcut learning of hidden data acquisition biases (DAB). Shortcut learning refers to a phenomenon in which an AI model learns to solve a task based on spurious correlations present in the data as opposed to features directly related to the task itself. We propose an open source, bias-corrected external accuracy estimate, P, that better estimates external accuracy to within 4% on average by measuring and calibrating for DAB-induced shortcut learning.
PubMed: 38744921
DOI: 10.1038/s41746-024-01118-4 -
Alternative Therapies in Health and... May 2024Postoperative pneumonia in critically ill patients is becoming an important cause for adverse clinical outcomes. It is very important to predict postoperative pneumonia....
OBJECTIVE
Postoperative pneumonia in critically ill patients is becoming an important cause for adverse clinical outcomes. It is very important to predict postoperative pneumonia. Surgical Intensive Care Unit(SICU), is an intensive care unit that deals with post-surgical patients, and is usually staffed by a team of surgeons, critical care specialists, and nurses to provide close monitoring and care. The purpose of this study is to investigate the risk factors of postoperative pneumonia in patients in SICU after surgery, establish a risk prediction model, and help surgeons and SICU doctors to early identify patients with high-risk postoperative pneumonia.
METHODS
To explore risk factors for postoperative pneumonia, Patients in the SICU from January 1, 2019, to December 31, 2019, were collected and retrospectively analyzed. The data were randomly divided into a derivation set (n=533) and a validation set (n=277). Patients were divided into postoperative pneumonia (PP) group and non-postoperative pneumonia (NPP) group. t test and Chi-square test were used to compare the differences between the PP and NPP groups before and after surgery. The risk factors of postoperative pneumonia in SICU patients were identified using univariate and multivariate logistic regression. A derivation set was used to build the model, and a validation set was used for model evaluation. The receiver operating characteristic (ROC) curve and the area under the curve (AUC) were used to evaluate the model performance. The model was validated by AUC using a validation set.
RESULTS
With this model, a total of 8 independent risk factors were identified to be associated with postoperative pneumonia in SICU patients after surgery. Patients with the 8 risk factors were assigned the following scores: recorded aspiration: 8, preoperative disturbance of consciousness: 4, thoracic and abdominal surgery: 3, contaminated wound: 10, abnormal choking cough on SICU admission: 9, abnormal pulmonary auscultation on SICU admission: 5, postoperative sedation, 4 points, and postoperative analgesia >1 day: 3. Eight risk factors were significantly correlated with postoperative pneumonia. Based on the scoring standard above, a risk factor table was created using the 8 predictors with a total score of 46. The AUC was 0.933 and 0.908 in derivation set and validation set. A cumulative score > 12 indicates high risk of postoperative pneumonia.
CONCLUSIONS
This study identified 8 risk factors that are significantly associated with postoperative pneumonia in SICU patients after surgery and provides operable clinical tools for early prevention and intervention of postoperative pneumonia. The implementation of this model has significant potential to enhance patient outcomes in the SICU by enabling early identification and stratification of patients at elevated risk of developing postoperative pneumonia. This model allows for the timely initiation of targeted preventative and therapeutic interventions, potentially reducing the incidence of pneumonia, shortening hospital stays, and improving overall patient survival rates. Furthermore, the use of a cumulative scoring system, simplifies clinical decision-making, making it accessible and actionable for surgeons and SICU staff.
PubMed: 38743891
DOI: No ID Found