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Evaluation of exercise stress test: ECG, symptoms, blood pressure, heart rate, performance

…shortness of breath. Dyspnea may be due to poor exercise capacity (with normal ventilatory capacity and cardiac output), diminished ventilatory capacity, diminished cardiac output or…

Digoxin: Dosing, Therapeutic Range and Toxicity Management

…rate or decreasing blood pressure, making it a consideration for patients with low blood pressure secondary to a low cardiac output. Its primary clinical utility…

Right Ventricular Infarction: Recognition and Haemodynamic Management

…s sign Hepatomegaly as evidence of systemic venous congestion Blood pressure and evidence of hypotension Clinical evidence of low cardiac output or shock RVI may…

Short and long-term prognostication in cardiac arrest

…occurs within minutes thereafter; survival is highly unlikely after 8–10 minutes of no flow (i.e. cardiac arrest without any circulation). These estimates should…

Physiological Assessment of Coronary Stenoses and Revascularization Decisions

…index of microcirculatory resistance (IMR). This review synthesizes the physiological basis, diagnostic performance, and outcome evidence for each index, situates two recent noninferiority trials of…

Stress Echocardiography: Protocols and Interpretation

…requires assessment of dynamic LV function, valve disease, pulmonary pressure, or haemodynamics Stress imaging is not recommended in patients undergoing urgent non cardiac surgery or…

What is the difference between cardioversion and defibrillation for arrhythmias?

…versus ventricular distinction less critical. Performance involves sedation (e.g., intravenous midazolam, propofol, or etomidate), routine blood pressure and oximetry monitoring, availability of atropine, isoproterenol…

Heart Failure With Preserved Ejection Fraction: Diagnosis and Treatment

…are elevated. The syndrome is therefore defined by symptoms and signs of congestion or impaired cardiac performance rather than by ejection fraction alone. Heart failure…

Heart Failure With Mildly Reduced Ejection Fraction

…failure occurring with mildly impaired LV systolic function. The syndrome remains fundamentally one of impaired cardiac performance, in which the heart cannot provide blood flow…

Indications, Contraindications, and Preparations for Exercise Stress Testing

…symptoms, and ECG changes. Although the risk of cardiac arrest is very small, personnel must be well trained in resuscitation. Subject preparations The procedure must…

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