A Man With Incessant Narrow Complex Tachycardia

Sharma, Esseim; Wu, Michael

doi:10.1001/jama.2019.16560

Cited by 4 publications

(4 citation statements)

References 10 publications

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“…5 A 12-lead ECG should always be obtained for the analysis of characteristics of the QRS complex; typically, and most importantly, analysis of a wide QRS complex tachycardia carefully examines the presence of P waves and analyzes their relation to the QRS complexes. 6 In the present case, a slurred initial QRS deflection and regular P wave preceding each QRS complex suggested supraventricular tachycardia via an accessory pathway. Termination of tachycardia in Figure, B further confirmed the preexcited tachycardia.…”

Section: Discussionmentioning

confidence: 44%

“…A wide complex tachycardia may represent either VT (>80% of cases) or a supraventricular rhythm with aberrant intraventricular conduction and ventricular preexcitation via an accessory pathway (20%) . A 12-lead ECG should always be obtained for the analysis of characteristics of the QRS complex; typically, and most importantly, analysis of a wide QRS complex tachycardia carefully examines the presence of P waves and analyzes their relation to the QRS complexes . In the present case, a slurred initial QRS deflection and regular P wave preceding each QRS complex suggested supraventricular tachycardia via an accessory pathway.…”

Section: Discussionmentioning

confidence: 87%

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An Interesting Wide QRS Complex Tachycardia

Chang,

Wang,

Liu

2023

JAMA Intern Med

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Section: Discussionmentioning

confidence: 44%

Section: Discussionmentioning

confidence: 87%

An Interesting Wide QRS Complex Tachycardia

Chang,

Wang,

Liu

2023

JAMA Intern Med

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“…A retrospective study of 136 COVID-19 patients showed that initial clinical and laboratory characteristics at admission were not predictive of this deterioration, further supporting that parameters measured at a single time point might not be sensitive enough to identify patients at risk 9 . To increase the model accuracy, we included two known demographic risk factors (age and hypertension), which have been identified consistently as demographic characteristics associated with a worse outcome 2 , 5 .…”

Section: Discussionmentioning

confidence: 99%

“…In the absence of effective and/or preventive treatments, the outcome for critically ill COVID-19 patients depends on the availability of supportive intensive medical care 5 . The rapid spread of COVID-19 as a global pandemic has brought extraordinary challenges to the healthcare system.…”

Section: Introductionmentioning

confidence: 99%

Predication of oxygen requirement in COVID-19 patients using dynamic change of inflammatory markers: CRP, hypertension, age, neutrophil and lymphocyte (CHANeL)

Lee

Hwang

Song

et al. 2021

Sci Rep

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The objective of the study was to develop and validate a prediction model that identifies COVID-19 patients at risk of requiring oxygen support based on five parameters: C-reactive protein (CRP), hypertension, age, and neutrophil and lymphocyte counts (CHANeL). This retrospective cohort study included 221 consecutive COVID-19 patients and the patients were randomly assigned randomly to a training set and a test set in a ratio of 1:1. Logistic regression, logistic LASSO regression, Random Forest, Support Vector Machine, and XGBoost analyses were performed based on age, hypertension status, serial CRP, and neutrophil and lymphocyte counts during the first 3 days of hospitalization. The ability of the model to predict oxygen requirement during hospitalization was tested. During hospitalization, 45 (41.8%) patients in the training set (n = 110) and 41 (36.9%) in the test set (n = 111) required supplementary oxygen support. The logistic LASSO regression model exhibited the highest AUC for the test set, with a sensitivity of 0.927 and a specificity of 0.814. An online risk calculator for oxygen requirement using CHANeL predictors was developed. “CHANeL” prediction models based on serial CRP, neutrophil, and lymphocyte counts during the first 3 days of hospitalization, along with age and hypertension status, provide a reliable estimate of the risk of supplement oxygen requirement among patients hospitalized with COVID-19.

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