Cardiology
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LDL Cholesterol: How Low Do We Go?
A meta-analysis of 29 cholesterol-lowering outcome studies with baseline average low-density lipoprotein (LDL) cholesterol levels ≤ 70 mg/dL showed consistent major adverse cardiovascular event risk reductions down to average LDL levels of 21 mg/dL without any increase in adverse events.
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Primary Headaches: Look, Listen, and Diagnose Rather Than Image
The diagnosis of primary headache disorders by a computerized and clinical paradigm can predict a baseline prevalence of intracranial abnormalities on brain imaging. Some historical “red flags” in children with headaches, including morning headaches and occipital pain, are not associated with increased intracranial abnormalities.
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Prophylactic Antibiotics for Acute Aspiration
Researchers compared outcomes in patients with aspiration pneumonitis who received prophylactic antibiotics during the first two days after macroaspiration to patients who received only supportive care during this time. Among 200 patients meeting the acute aspiration pneumonitis case definition, antimicrobial prophylaxis was not associated with improvement in mortality.
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Infections Associated With Travel to the United States
Infectious illness is common in travelers from other countries visiting the United States. Skin and soft tissue infections, respiratory infections, and gastrointestinal illness are most likely, but specific geographic illnesses such as Lyme disease also occur.
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A Review of Updated Guidelines Regarding Bradycardia and Cardiac Conduction Delay
The American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society have established updated guidelines on the evaluation and management of patients with bradycardia and conduction delays. Many key elements remain largely unchanged from prior guideline recommendations on pacemakers published in 2008 and 2012, but there also are important new definitions, recommendations, and areas of emphasis.
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Early Identification of Cardiac Amyloidosis in Carpal Tunnel Surgery Patients
In a cohort of older patients undergoing carpal tunnel release surgery, an analysis of tenosynovial tissue revealed amyloid deposits in 10% of patients. This development may facilitate early diagnosis of cardiac amyloidosis.
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Mitral Annulus Disjunction and Ventricular Arrhythmias
A patient cohort with mitral annular disjunction (MAD) identified by echo was characterized clinically and by MRI. Ventricular arrhythmias were common in MAD patients and related to the degree of MAD and papillary muscle fibrosis by MRI but not the presence of mitral valve prolapse.
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Detection of Prosthetic Heart Valve Endocarditis
A multicenter, retrospective, observational study of patients undergoing 18F-fluorodeoxyglucose PET/CT for prosthetic valve endocarditis or other indications showed that if certain obvious confounders are excluded, this imaging technique offers a high degree of accuracy for diagnosing prosthetic valve endocarditis, especially if performed early in the course of the disease.
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Study Adds Complexity to Post-TAVR Anticoagulation
In this large contemporary, prospective transcatheter aortic valve replacement registry, oral anticoagulation appears to be protective against valve degeneration but is associated with increased mortality. The strongest predictors of mortality at three years were male gender, renal failure, and atrial fibrillation.
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Finding a Consensus on ARDS Diagnostics and Determining a Relationship to Hospital Mortality
Critical care physicians reviewed more than 700 mechanically ventilated patients with acute hypoxemia and reached a consensus on the presence of acute respiratory distress syndrome (ARDS) in 15% of patients and nonconsensus on the presence of ARDS in an additional 14% of cases. Hospital mortality was not different between these cohorts (37% and 35%, respectively).