54 träffar

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

…after presentation Mechanical complications of myocardial infarction Recurrent dynamic ECG changes suggestive of ischaemia, especially intermittent ST segment elevation Patients may initially stabilize and subsequently…

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

…mask and cap. Lidocaine 10 mg/mL for local anaesthesia in the awake patient — the anaesthetic also improves the chance of success by counteracting vascular…

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
Left Ventricular Thrombus After Myocardial Infarction

…In patients with recurrent chest pain and hemodynamic compromise after MI, mechanical complications should be considered. Transthoracic echocardiography (TTE) can help assess for these complications…

ArticleEchocardiography
Physics of ultrasound

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

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

…the drug is responsible for the first week. Indications A mechanical valve prosthesis — warfarin is mandatory, and direct oral anticoagulants (DOACs) are contraindicated. Antiphospholipid syndrome…

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

…main beam. As the ultrasound beam sweeps back and forth, multiple side lobe artifacts can be generated on both sides of the true reflector. If…

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

…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

…mechanical tricuspid prosthesis the lead must not be passed through the valve. The order of management in acute bradycardia Atropine is given in doses of…

ArticleCardiology
Diuretic Strategy and Decongestion in Heart Failure

…organ injury Consider mechanical circulatory support Refractory advanced disease Consider palliative care Right ventricular failure is characterized by increased right atrial and right ventricular pressures…

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

…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

…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

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

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

…three distinct ventricular contractions, namely longitudinal, radial and circumferential contraction (refer to Myocardial Mechanics and Figure 1). Diastole starts immediately after systole. The entire ventricular…

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…