54 träffar

ArticleEchocardiography
Left Ventricular Thrombus After Myocardial Infarction

…or reinfarction. Ventricular tachyarrhythmia. Features suggesting systemic embolization. In patients with recurrent chest pain and hemodynamic compromise after MI, mechanical complications should be considered. Transthoracic…

ArticleEmergency medicine
STEMI: Primary PCI and System-of-Care Time Targets

…Mechanical or pump failure complications , including heart failure and cardiogenic shock. Most out of hospital deaths occur early and are commonly related to ventricular fibrillation…

ArticleProcedurer
Arterial line

…cardiac arrest. Repeated blood gases, for example during mechanical ventilation or severe metabolic derangement. Major surgery with expected blood loss or large volume shifts. Patients…

ArticleMyocardial ischemia and infarction
NSTEMI: Risk Stratification and Timing of the Invasive Strategy

…Haemodynamic instability or cardiogenic shock Life threatening arrhythmias or cardiac arrest after presentation Mechanical complications of myocardial infarction Recurrent dynamic ECG changes suggestive of ischaemia…

ArticleProcedurer
Pleural aspiration and chest drain

Procedurer Almost all the complications of pleural aspiration arise from two errors: the needle is placed in the wrong site, and too much is drained…

ArticleMyocardial ischemia and infarction
Stent Thrombosis: Timing, Causes, Diagnosis, and Prevention

…of several possibilities: Extension of the original infarction or reinfarction Acute native vessel thrombosis Stent thrombosis Mechanical complications of myocardial infarction Pericarditis Dynamic recurrence of…

ArticleEchocardiography
Physics of ultrasound

…will transfer the mechanical (pressure) energy to the new medium, which may also start to vibrate (Figure 1). Figure 1. The principle of how sound…

ArticleCardiology
The ischemic cascade

…this sequence, before mechanical dysfunction ( i.e. left ventricular systolic or diastolic dysfunction) or electrical changes (ST T changes on ECG) become apparent. In contrast…

ArticleProcedurer
Edrophonium test

…EMG about 95 %). Contraindications Known hypersensitivity to edrophonium. Mechanical obstruction of the bowel or the urinary tract. Marked bradycardia, sick sinus syndrome or high grade…

ArticleProcedurer
Warfarin therapy

…coagulopathy. Severe uncontrolled hypertension. Recent intracranial haemorrhage without a fresh assessment of benefit and risk. An inability to attend for sampling and follow up — relative…

ArticleCardiology
Anticoagulation Strategies in Atrial Fibrillation

…intimate understanding of the underlying pathophysiology, which is classically framed by Virchow’s triad: blood stasis, endothelial dysfunction, and hypercoagulability [1] [2] . Mechanical stasis in…

ArticleEchocardiography
Artifacts in ultrasound imaging

…g skeleton, calcifications, mechanical heart valves) and reflect virtually all sound waves, leaving too few waves to explore the area behind the reflector. This results…

ArticleCPR
The chain of survival in sudden cardiac arrest

…endotracheal intubation, mechanical chest compressions, targeted temperature management, etc.) and are much less effective in terms of the number needed to treat (NNT). The Number…

ArticleEchocardiography
The ultrasound transducer

…ultrasound waves, they begin to vibrate and these mechanical vibrations are converted into electric current that is sent back to the ultrasound machine, where the…

ArticleEchocardiography
Tricuspid stenosis

…replacement can be performed with biological or mechanical prostheses. The former is preferred due to the lower risk of thrombosis and evidence demonstrating long term…

ArticleProcedurer
Electrical cardioversion

…happens to fall in the T wave can precipitate ventricular fibrillation, and cardioversion of fibrillation of unknown duration without anticoagulation can cause a stroke hours…

ArticleReferensvärden
Intensive care parameters

…raises the intracranial pressure. Circulation Parameter Target Comment : : : MAP ≥ 65 mmHg 80–85 mmHg in chronic hypertension or when there are signs of inadequate perfusion…

ArticleProcedurer
Transcutaneous and transvenous pacing

…resolution of the underlying cause. Contraindications Hypothermia with a body temperature below about 30 °C — the hypothermic myocardium is irritable and pacing can precipitate ventricular…

ArticleCardiology
Diuretic Strategy and Decongestion in Heart Failure

…the full range of left ventricular ejection fraction and may result from systolic dysfunction, diastolic dysfunction, or both. The clinical consequences of extracellular volume expansion…

ArticleMyocardial ischemia and infarction
In-Stent Restenosis: Mechanisms and Treatment

…Incomplete lesion preparation Persistent stenosis within the treated segment Mechanical factors are particularly important because correction of the underlying problem is necessary for durable treatment…

ArticleCPR
Epidemiological aspects of cardiac arrest

…ECG) is a very strong predictor of survival. This is because cardiac arrest presenting with ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT) can be…

ArticleCardiology
Levosimendan (Simdax, Simendan) in acute heart failure

…resuscitated cardiac arrest, cardiac transplantation or mechanical circulatory support, nonfatal myocardial infarction, transient ischemic attack or stroke, and initiation of renal replacement therapy. The study…

ArticleConduction defects
Overview of atrioventricular (AV) blocks

…intentionally slow (due to the low concentration of gap junctions in AV nodal cells), which allows for ventricular filling to complete prior to ventricular contraction…

ArticleCPR
Traumatic cardiac arrest

…cordis occurs as a result of a blunt, non penetrating blow to the chest, typically over the precordium. The mechanical impact can induce ventricular fibrillation…

ArticleEchocardiography
Left Ventricular Function

…and ventricular function. A large body of science has demonstrated that these parameters are highly interdependent and rather complex. Indeed, myocardial mechanics constitute a whole…

ArticleCardiology
Heart Failure with Preserved Ejection Fraction (HFpEF)

…predominance. Women have a substantially higher lifetime risk of developing HFpEF, a phenomenon attributed to intrinsic sex differences in cardiovascular aging, including smaller ventricular cavities…

ArticleEchocardiography
Left ventricular diastolic function

…may appear as a simple and passive process, it is actually a complicated and fundamental aspect of ventricular function. Impaired diastolic function (i.e diastolic…

ArticleEchocardiography
Aortic regurgitation

…Chronic aortic regurgitation leads to dilatation and hypertrophy of the left ventricle. Cardiac remodeling Ventricular dilatation and hypertrophy lead to myocardial remodeling and neurohormonal changes…

ArticleECG
Cardiac electrophysiology and ECG interpretation

…wave reflects the recovery (repolarization) of the ventricles. Note that the ECG rarely shows atrial recovery (repolarization) since it coincides with ventricular depolarization (i.e…