26 träffar

ArticleCPR
Cardiac arrest due to electrolyte imbalance

…hyponatremia requires careful identification of its etiology, severity (Table 2), and temporal onset. Distinguishing between acute and chronic hyponatremia, based on the rapidity of onset…

ArticleEchocardiography
M-mode (motion mode) echocardiography

…time). Since M mode only analyzes a single ultrasound line, its temporal and axial resolution is very high, as compared with 2D echocardiography. M mode…

ArticleCardiology
Management of bradycardia (bradyarrhythmia)

…intermittent symptoms of bradycardia, it is fundamental to establish a temporal correlation between the symptoms and ECG recordings confirming a bradyarrhythmia. Potentially reversible causes should…

ArticleConduction defects
Overview of atrioventricular (AV) blocks

…Figure 1. Components of the ventricular conduction system and the temporal association between the ECG waveforms and impulse transmission through the heart. Atrioventricular (AV) blocks…

ArticleEchocardiography
Relaxation of the left ventricle

…ventricular contraction. Rapid impulse conduction is crucial; slow spread of the impulse results in temporal dissociation of cellular activation, and thus desynchronization of contraction. Importantly…

ArticleEchocardiography
Two-dimensional (2D) echocardiography

…frames ) displayed per second. High frame rate (i.e many frames per second) is desirable because it provides better temporal resolution. Frame rate depends on…

ArticleMyocardial ischemia and infarction
Periprocedural Myocardial Infarction After PCI and CABG

Myocardial ischemia and infarction Definition and pathophysiology Periprocedural myocardial infarction (MI) is myocardial necrosis temporally related to coronary revascularization. It may follow percutaneous coronary intervention…

ArticleCardiology
Post-Infarction Pericarditis and Dressler Syndrome

Cardiology Myocardial ischemia and infarction Definition and pathophysiology Post infarction pericarditis encompasses two temporally and clinically distinct complications of acute myocardial infarction (AMI): Early infarct…

ArticleArrhythmias and arrhythmology
Atropine: Dosing in Bradycardia and Its Limitations

…and hyperkalemia. For recurrent symptomatic bradycardia, temporary or permanent pacing may be required. However, transcutaneous pacing in the setting of cardiac arrest has not demonstrated…

ArticleMyocardial ischemia and infarction
Intravascular Imaging: IVUS and OCT for PCI Optimisation

…backscatter of the light signal. Imaging is therefore typically performed during contrast injection or another method of temporary blood displacement. OCT is particularly useful for…