Hence, we hypothesise that diabetes has no effect on either myocardial work output or heat production and, consequently, the dependence of myocardial efficiency on afterload of diabetic tissue is the same as that of healthy tissue.
It was their serendipitous choice of this value that allowed them to find no effect of diabetes upon myocardial work output, oxygen consumption or total efficiency – a result in accord with our findings reported in Figure 4.
However, the first-generation HBOCs led to systemic and pulmonary hypertension with decreased cardiac output, myocardial damage, and other effects, such as NO scavenging, oxidative stress, and hyperoxia.
AVP reduced systolic myocardial contractility, cardiac output, heart rate and troponin I levels compared with norepinephrine.
Analyzed in 10 patients were: cardiac output, myocardial blood flow, and aorta, right atrium, and coronary perfusion pressures.
In a large cohort of cardiac surgical patients (n = 4,418), Zittermann and colleagues recently demonstrated a significantly increased risk of major cardiac and cerebrovascular events (defined as in-hospital death, myocardial infarction, low output syndrome and stroke) in patients with low (<20 ng/ml), but also high-normal vitamin D status (>40 ng/ml) [ 55].
CO: cardiac output; IVA: myocardial isovolumic acceleration; mPAP: mean and pulse arterial; PVR: pulmonary vascular resistance; Sm: myocardial peak systolic velocity; TAPSE: tricuspid annular plane systolic excursion.
Dobutamine (DOB) is the actual recommended b-adrenergic inotropic drug to support sepsis-induced myocardial dysfunction when cardiac output index is still low after preload correction.
Experimental studies suggest that metabolic acidemia can impair myocardial contractility, reduce cardiac output, affect oxyhemoglobin dissociation and tissue oxygen delivery, inhibit intracellular enzymes, such as phosphofructokinase, alter cellular metabolism, and result in vital organ dysfunction [9 12].
In addition to major disturbance of phagocyte function, excessive C5a levels during sepsis have been linked to impaired myocardial contractility and cardiac output [26], profound coagulatory and fibrinolytic changes [27], and enhanced production of proinflammatory cytokines and chemokines [17], [28], all of which result in reduced survival in rodents.
