Delayed dilated cardiomyopathy for major burn injuries

New-onset, postoperative tachyarrhythmias in critically ill surgical patients

Tachyarrhythmias in critically ill surgical patients can have varying effects, from minimal consequence to lifetime sequelae. Atrial fibrillation can be common in the post-operative period, often a result of fluctuations in volume status and electrolyte derangements. While there is extensive literature regarding the critically ill medical or cardiac patient, there is less focusing on the critically ill surgical or trauma patient. More specifically, there is minimal regarding tachyarrhythmias in burn patients. The latter population tends to have frequent and wide variations in volume status given initial resuscitation and after major excisions, concomitant with acute blood loss anemia, which can contribute to cardiac disturbances. A literature review was conducted to investigate the incidence and consequences of tachyarrhythmias in critically ill surgical and trauma patients, with a focus on the burn population. While some similarities and conclusions can be drawn between these surgical populations, further inquiry into the unique burn patient is necessary.

Burn-associated delayed dilated cardiomyopathy evaluated by cardiac PET and SPECT: Report of a case

Dilated cardiomyopathy is a delayed-onset and rarely reported cardiac complication of burn injury although the mechanism remains unclear. We thus report a case of dilated cardiomyopathy following severe burn injury, in which technetium 99m sestamibi single-photon emission computed tomography (SPECT), iodine-123 beta-methyl-iodophenylpentadecanoic acid SPECT and ¹⁸F-fluorodeoxyglucose positron emission tomography (PET) were performed to evaluate the pathophysiologic condition in combination with cardiac catheterization and myocardial biopsy. The cardiac PET and SPECT images showed reduced myocardial blood flow, decreased fatty acid metabolism, and increased glucose utilization in the left ventricular lateral wall in spite of normal coronary angiography, no significant cardiac fibrosis, and inflammatory cell infiltration, which suggests that myocardial ischemia due to microcirculatory disturbance in hypermetabolic state associated with burn injury might be a causative mechanism of dilated cardiomyopathy in this case. A beta blocker, bisoprolol, was successfully introduced in this patient in combination with oral inotropic agents, pimobendan and digitalis after the prolonged use of intravenous dobutamine infusion, which might have been beneficial for this patient with burn-associated dilated cardiomyopathy not only to reduce regional myocardial ischemia but also to attenuate hypermetabolic state after severe burn injury. <Learning objective: Dilated cardiomyopathy complicated with burn injury has been reported to cause a sudden attack of dyspnea and death. This case report suggests that burn-associated dilated cardiomyopathy may be caused by relative myocardial ischemia due to microvascular disturbance in hypermetabolic state associated with burn injuries and can be treated effectively with beta blockers with or without oral inotropic agents.>.

Increased systemic Th17 cytokines are associated with diastolic dysfunction in children and adolescents with diabetic ketoacidosis

Diastolic dysfunction suggestive of diabetic cardiomyopathy is established in children with T1DM, but its pathogenesis is not well understood. We studied the relationships of systemic inflammatory cytokines/chemokines and cardiac function in 17 children with T1DM during and after correction of diabetic ketoacidosis (DKA). Twenty seven of the 39 measured cytokines/chemokines were elevated at 6-12 hours into treatment of DKA compared to values after DKA resolution. Eight patients displayed at least one parameter of diastolic abnormality (DA) during acute DKA. Significant associations were present between nine of the cytokine/chemokine levels and the DA over time. Interestingly, four of these nine interactive cytokines (GM-CSF, G-CSF, IL-12p40, IL-17) are associated with a Th17 mediated cell response. Both the DA and CCL7 and IL-12p40, had independent associations with African American patients. Thus, we report occurrence of a systemic inflammatory response and the presence of cardiac diastolic dysfunction in a subset of young T1DM patients during acute DKA.

Reversible Cardiomyopathy After Severe Burn Injury

Cardiomyopathy can result in significant morbidity and mortality, leading to long-term cardiac disability or consideration for transplantation. This study reviewed our experience with pediatric burn patients who developed cardiomyopathy during their acute hospitalization. We identified five patients admitted from 1991 to 2003 who were diagnosed with cardiomyopathy during their initial hospitalization and retrospectively collected data regarding hospital course, cardiac dysfunction, radiographic and echocardiographic studies, pharmacologic treatment, and long-term cardiac function. All children were Caucasian males with extensive full-thickness burns requiring prolonged ventilatory support. Initial signs and symptoms of cardiomyopathy, including radiographic and echocardiographic evidence, were noted greater than 30 days after injury. Patients received a combination of digoxin, diuretics, angiotensin-enzyme converting inhibitor, and beta-blocker therapy. During follow-up over the course of 2 to 11 years, all patients returned to normal cardiac function. Cardiomyopathy after extensive burn injury appears reversible. With prompt diagnosis and treatment, cardiac function normalizes within 9 to 21 months after the initiation of treatment.

Delayed death in burns and the allegations of medical negligence

Burns and deaths due to burns to remain an important public health and social problem in India. Most of the victims, who survive the initial 24h after burns, succumb to infection of the burnt area and its complications. Burns cause devitalization of tissues, leaving extensive raw areas, which usually remain moist due to the outflow of serous exudate. This exposed, moist area along with the dead and devitalized tissue provides the optimum environment favoring colonization and proliferation of numerous microorganisms, which is further enhanced by the depression of the immune response. All these factors, i.e., disruption of the skin barrier, a large cutaneous bacterial load, the possibility of the normal bacterial flora turning into opportunistic pathogens and the severe depression of the immune system, contribute towards sepsis in a burns victim, which usually is life threatening. Despite various advances in infection control measures, early detection of microorganisms and newer, broader spectrum antibiotics, management of burn septicemia still remains a challenge. Pulmonary, cardiac and other complications also contribute to the delayed deaths following severe burn.