54 träffar

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

…acute severe heart failure and cardiogenic shock. Identification of life threatening arrhythmias. Assessment for high risk mechanical complications. Determination of symptom onset time and anticipated…

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

…deterioration, heart failure, malignant arrhythmias, or mechanical complications. Risk assessment is intended to identify patients most likely to benefit from early coronary angiography and revascularization…

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

…thrombosis Mechanical complications of myocardial infarction Pericarditis Dynamic recurrence of ST segment elevation is particularly concerning for a new infarction. A pericardial rub and poor…

ArticleEchocardiography
Left Ventricular Thrombus After Myocardial Infarction

…heart failure. Recurrent ischemia or reinfarction. Ventricular tachyarrhythmia. Features suggesting systemic embolization. In patients with recurrent chest pain and hemodynamic compromise after MI, mechanical complications…

ArticleProcedurer
Arterial line

…artery is the first choice : superficial, easy to compress, with a dual collateral supply to the hand through the palmar arches and the lowest complication…

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…

ArticleEchocardiography
Physics of ultrasound

…metal, or tissue and fluids in the human body. Sound waves arise when a sound source generates mechanical vibrations in the particles of the medium…

ArticleCPR
Terminology of sudden cardiac arrest and resuscitation

…possibly ventilation and automatic external defibrillator (AED). Return of Spontaneous Circulation (ROSC) : Return of mechanical cardiac function resulting in circulation with pulse. Coronary perfusion pressure…

ArticleCardiology
The ischemic cascade

…with known coronary artery disease: Achieving 85% of age adjusted MHR resulted in myocardial perfusion defects in all patients,, anginal symptoms in 83%, and ECG…

ArticleProcedurer
Edrophonium test

…Mechanical obstruction of the bowel or the urinary tract. Marked bradycardia, sick sinus syndrome or high grade AV block without pacemaker protection. Asthma and other…

ArticleProcedurer
Warfarin therapy

…Warfarin has a narrow therapeutic index, a half life of several days and more than a hundred clinically relevant interactions. What determines whether the treatment…

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

…less ultrasound and become darker in the image. Acoustic shadowing Some structures have very high echogenicity (e.g skeleton, calcifications, mechanical heart valves) and reflect…

ArticleCPR
The chain of survival in sudden cardiac arrest

…determinants of survival in cardiac arrest. All subsequent actions require trained professionals (e.g endotracheal intubation, mechanical chest compressions, targeted temperature management, etc.) and are…

ArticleEchocardiography
The ultrasound transducer

…from the transducer. These sound waves travel through tissues and fluids. Some of the sound waves are reflected back to the transducer. By analyzing 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

…can precipitate ventricular fibrillation, and cardioversion of fibrillation of unknown duration without anticoagulation can cause a stroke hours to weeks later. Everything else in the…

ArticleReferensvärden
Intensive care parameters

…about 7.20. Different targets apply when the intracranial pressure is raised: normocapnia (PaCO₂ 4.5–5.0 kPa) and avoidance of hypoxia, since hypercapnia…

ArticleProcedurer
Transcutaneous and transvenous pacing

…complete heart block without current symptoms, alternating bundle branch block in acute anterior infarction, and before drugs or procedures with a known risk of bradycardia…

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

…The occurrence of neoatherosclerosis helps explain why ISR and other stent related events may arise well after the initial intervention. Mechanical mechanisms Mechanical abnormalities may…

ArticleCPR
Epidemiological aspects of cardiac arrest

…cardiac arrest presenting with ventricular fibrillation (VF) or pulseless ventricular tachycardia (VT) can be defibrillated to restore an organized rhythm and thus mechanical cardiac function…

ArticleCardiology
Levosimendan (Simdax, Simendan) in acute heart failure

…points Levosimendan alleviates heart failure symptoms, increases cardiac output, and lowers pulmonary artery pressure without increasing myocardial oxygen consumption. The inotropic effect of levosimendan is…

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…

ArticleCPR
Traumatic cardiac arrest

…In severe cases, there can be a rupture of the atria or ventricles. Myocardial infarction : The contusion can cause coronary artery dissection, atherothrombosis or rupture…

ArticleEchocardiography
Left Ventricular Function

…geometry, and function of the left ventricle is fundamental for the diagnosis and prognosis of most cardiac diseases, including coronary artery disease, heart failure, arrhythmias…

ArticleCardiology
Heart Failure with Preserved Ejection Fraction (HFpEF)

…epicardial ischemic heart disease and myocardial infarction are primary drivers, HFpEF is more frequently associated with coronary microvascular dysfunction, though epicardial coronary artery disease frequently…

ArticleEchocardiography
Left ventricular diastolic function

…a complicated and fundamental aspect of ventricular function. Impaired diastolic function (i.e diastolic dysfunction ) may lead to diastolic heart failure (i.e heart failure…

ArticleEchocardiography
Aortic regurgitation

…aortic regurgitation gradually leads to impaired contractile function and the development of myocardial fibrosis. Contractile dysfunction further aggravates the regurgitation (the regurgitation volume increases). Mechanically…