Myxedema Coma: A New Look into an Old Crisis

Mathew, Vivek; Misgar, Raiz Ahmad; Ghosh, Sujoy; Mukhopadhyay, Pradip; Roychowdhury, P.; Pandit, Kaushik; Mukhopadhyay, Satinath; Chowdhury, Subhankar

doi:10.4061/2011/493462

Cited by 148 publications

(199 citation statements)

References 44 publications

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“…[74][75][76] Thyroid disorders, both hyperthyroidism and hypothyroidism, can also cause circulatory collapse. 77,78 Pregnancy-associated cardiac conditions, including both peripartum cardiomyopathy and acute coronary dissection, may present as CS. Numerous additional causes of CS have been reported, but they typically occur in <1% of patients.…”

Section: Pathogenesismentioning

confidence: 99%

Contemporary Management of Cardiogenic Shock: A Scientific Statement From the American Heart Association

Diepen¹,

Katz²,

Albert³

et al. 2017

Circulation

1,343

1,165

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Cardiogenic shock is a high-acuity, potentially complex, and hemodynamically diverse state of end-organ hypoperfusion that is frequently associated with multisystem organ failure. Despite improving survival in recent years, patient morbidity and mortality remain high, and there are few evidence-based therapeutic interventions known to clearly improve patient outcomes. This scientific statement on cardiogenic shock summarizes the epidemiology, pathophysiology, causes, and outcomes of cardiogenic shock; reviews contemporary best medical, surgical, mechanical circulatory support, and palliative care practices; advocates for the development of regionalized systems of care; and outlines future research priorities. Cardiogenic shock (CS) is a low-cardiac-output state resulting in life-threatening end-organ hypoperfusion and hypoxia.1,2 Acute myocardial infarction (MI) with left ventricular (LV) dysfunction remains the most frequent cause of CS. 1,3 Advances in reperfusion therapy have been associated with improvements in survival, but significant regional disparities in evidence-based care have been reported, and in-hospital mortality remains high (27%-51%).1,4-9 Management recommendations are distributed between disease-specific statements and guidelines, and a dedicated and comprehensive clinical resource in this area is lacking. Thus, consolidating the evidence to define contemporary best medical and surgical CS practices for both MI-associated CS and other types of CS may be an important step in knowledge translation to help attenuate disparities in evidence-based care.Regional systems of care coupled with treatment algorithms have improved survival in high-acuity time-sensitive conditions such as MI, out-of-hospital cardiac arrest (OHCA), and trauma.10-12 Applying a similar framework to CS management may lead to similar improvements in survival, and CS systems of care are emerging within existing regional cardiovascular emergency care networks; however, guidance from a national expert group on structure and systems of care has not been available. 13,14 Accordingly, the purposes of this American Heart Association (AHA) scientific statement on CS are to summarize our contemporary understanding of the epidemiology, pathophysiology, and in-hospital best care practices into a single clinical resource document; to suggest a stepwise management algorithm that integrates medical, surgical, and mechanical circulatory support (MCS) therapies; and to propose a Mission: Lifelinesupported pathway for the development of integrated regionalized CS systems of care. DEFINITION OF CSAcute cardiac hemodynamic instability may result from disorders that impair function of the myocardium, valves, conduction system, or pericardium, either in isolation HISTORICAL PERSPECTIVESBefore the routine use of early revascularization, MIassociated CS had an in-hospital mortality exceeding 80%. A registry trial of 250 patients with acute MI described the association between bedside physical examination (Killip classification) for the as...

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Section: Pathogenesismentioning

confidence: 99%

Contemporary Management of Cardiogenic Shock: A Scientific Statement From the American Heart Association

Diepen¹,

Katz²,

Albert³

et al. 2017

Circulation

1,343

1,165

View full text Add to dashboard Cite

show abstract

“…Usual precipitating factors are discontinuation of therapy, infections and exposure to cold. Myxedema coma can ensue from long standing untreated hypothyroidism (213,214) (D,D).…”

Section: How To Treat Myxedema Coma?mentioning

confidence: 99%

Clinical practice guidelines for the management of hypothyroidism

Brenta

Vaisman

Sgarbi

et al. 2013

Arq Bras Endocrinol Metab

125

123

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Introduction: Hypothyroidism has long been known for its effects on different organ systems, leading to hypometabolism. However, subclinical hypothyroidism, its most prevalent form, has been recently related to cardiovascular risk and also to maternal-fetal complications in pregnant women. Objectives: In these clinical practice guidelines, several aspects of this field have been discussed with the clear objectives of helping physicians treat patients with hypothyroidism, and of sharing some of our Latin American-based clinical experience. Materials and methods: The Latin American Thyroid Society commissioned a Task Force on Hypothyroidism to develop evidence-based clinical guidelines on hypothyroidism. A systematic review of the available literature, focused on the primary databases of MedLine/PubMed and Lilacs/SciELO was performed. Filters to assess methodological quality were applied to select the best quality studies. The strength of recommendation on a scale from A-D was based on the Oxford Centre for Evidence--based Medicine, Levels of Evidence 2009, allowing an unbiased opinion devoid of subjective viewpoints. The areas of interest for the studies comprised diagnosis, screening, treatment and a special section for hypothyroidism in pregnancy. Results: Several questions based on diagnosis, screening, treatment of hypothyroidism in adult population and specifically in pregnant women were posed. Twenty six recommendations were created based on the answers to these questions. Despite the fact that evidence in some areas of hypothyroidism, such as therapy, is lacking, out of 279 references, 73% were Grade A and B, 8% Grade C and 19% Grade D. Conclusions: These evidence-based clinical guidelines on hypothyroidism will provide unified criteria for management of hypothyroidism throughout Latin America. Although most of the studies referred to are from all over the world, the point of view of thyroidologists from Latin America is also given. Arq Bras Endocrinol Metab. 2013;57(4):265-99

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“…4 In addition, the GCS is often relied upon in prehospital research to help control for degree of TBI (for example, see Davis and colleagues 5 ), even though it was not originally intended, nor validated, for this clinical context. Indeed, the GCS is currently being used for non-TBI patients, for instance, to measure brain function in meningitis 6 and hypothyroidism 7 cases. Overall, the GCS has evolved to become a near-universal measure for global mental function, despite its original intent and validation in TBI patients subsequent to stabilization.…”

Section: Introductionmentioning

confidence: 99%

Prehospital Heart Rate and Blood Pressure Increase the Positive Predictive Value of the Glasgow Coma Scale for High-Mortality Traumatic Brain Injury

Reisner

Chen

Kumar

et al. 2014

Journal of Neurotrauma

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We hypothesized that vital signs could be used to improve the association between a trauma patient's prehospital Glasgow Coma Scale (GCS) score and his or her clinical condition. Previously, abnormally low and high blood pressures have both been associated with higher mortality for patients with traumatic brain injury (TBI). We undertook a retrospective analysis of 1384 adult prehospital trauma patients. Vital-sign data were electronically archived and analyzed. We examined the relative risk of severe head Abbreviated Injury Scale (AIS) 5-6 as a function of the GCS, systolic blood pressure (SBP), heart rate (HR), and respiratory rate (RR). We created multi-variate logistic regression models and, using DeLong's test, compared their area under receiver operating characteristic curves (ROC AUCs) for three outcomes: head AIS 5-6, all-cause mortality, and either head AIS 5-6 or neurosurgical procedure. We found significant bimodal relationships between head AIS 5-6 versus SBP and HR, but not RR. When the GCS was < 15, ROC AUCs were significantly higher for a multi-variate regression model (GCS, SBP, and HR) versus GCS alone. In particular, patients with abnormalities in all parameters (GCS, SBP, and HR) were significantly more likely to have high-mortality TBI versus those with abnormalities in GCS alone. This could be useful for mobilizing resources (e.g., neurosurgeons and operating rooms at the receiving hospital) and might enable new prehospital management protocols where therapies are selected based on TBI mortality risk.

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Myxedema Coma: A New Look into an Old Crisis

Cited by 148 publications

References 44 publications

Contemporary Management of Cardiogenic Shock: A Scientific Statement From the American Heart Association

Contemporary Management of Cardiogenic Shock: A Scientific Statement From the American Heart Association

Clinical practice guidelines for the management of hypothyroidism

Prehospital Heart Rate and Blood Pressure Increase the Positive Predictive Value of the Glasgow Coma Scale for High-Mortality Traumatic Brain Injury

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