54 träffar

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…

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…

ArticleProcedurer
Arterial line

…anaesthetic also improves the chance of success by counteracting vascular spasm. Pressure monitoring set: stiff, short tubing, a transducer, and a flush system with physiological…

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

…form of a sound wave. If the sound waves encounter a new medium, some sound waves will be reflected while others will transfer the mechanical…

ArticleCardiology
The ischemic cascade

…Myocardial perfusion imaging techniques, such as SPECT and PET, can detect perfusion abnormalities early in this sequence, before mechanical dysfunction ( i.e. left ventricular systolic…

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

…that of reverberations. Figure 4. Mirror image artifact. Side lobe artifact A 2D image is formed by allowing the ultrasound beam to sweep back and…

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

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

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

…during and after cardiac arrest with persisting electrical activity. Overdrive pacing in bradycardia dependent torsades de pointes. Standby pacing — pads applied but the device not…

ArticleCardiology
Diuretic Strategy and Decongestion in Heart Failure

…or both. The clinical consequences of extracellular volume expansion include elevated cardiac filling pressures, pulmonary congestion, systemic venous hypertension, and peripheral interstitial edema. These abnormalities…

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

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

ArticleCardiology
Levosimendan (Simdax, Simendan) in acute heart failure

…researchers compared the effectiveness of milrinone and dobutamine . The primary composite outcome included in hospital mortality, resuscitated cardiac arrest, cardiac transplantation or mechanical circulatory support…

ArticleConduction defects
Overview of atrioventricular (AV) blocks

…AV) blocks , subdivided according to the degree of block. First , second and third degree AV block may all be diagnosed using the ECG. First degree…

ArticleCPR
Traumatic cardiac arrest

…prompt interventions can reverse cardiac arrest and survivors of traumatic cardiac arrest often exhibit favorable neurological outcomes ( Rawshani et al ). Traumatic cardiac arrests typically result…

ArticleEchocardiography
Left Ventricular Function

…improve cardiac function and survival dramatically in heart failure ( Yancy et al ). Acquiring a basic understanding of cardiac function requires an understanding of myocardial mechanics…

ArticleEchocardiography
Left ventricular diastolic function

…global cardiac function. Systole is a complicated process involving three distinct ventricular contractions, namely longitudinal, radial and circumferential contraction (refer to Myocardial Mechanics and Figure…

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…