ABSTRACT
Key Clinical Message: Chronic ketamine use can lead to sphincter of oddi dysfunction (SOD), causing various hepatobiliary complications. Recognizing substance abuse history is vital for early detection. Timely intervention can prevent irreversible liver and pancreas damage. Abstract: Ketamine is commonly abused as a recreational drug worldwide due to its ability to induce euphoria-like effects. Ketamine abuse is associated with many hepatobiliary side effects ranging from cholestasis to biliary sepsis and death. Here we present a case of a young 29-year female with upper abdominal pain due to SOD resulting from chronic use of ketamine. SOD can result in obstruction or dysfunction of the bile and pancreatic ducts. Ketamine induces SOD by activation of the muscarinic receptors in the sphincter of oddi. Detail history of substance abuse is crucial for early identification of ketamine-induced SOD. Early identification and treatment of this rare condition can prevent permanent injury to the liver and pancreas.
ABSTRACT
Reverse takotsubo syndrome, a variant of takotsubo cardiomyopathy, is an acute left ventricular failure characterized by the basal akinesis/hypokinesis associated with apical hyperkinesis. Its presentation is similar to that of the acute coronary syndrome. Case presentation: The authors present a case of a 49-year-old woman, a vice principal at a local school with a history of hypertension, who was brought to our center after she collapsed while giving a graduation speech. Reverse takotsubo was a presumed diagnosis after we ruled out other differentials. Clinical discussion: The pathophysiology of reverse takotsubo syndrome is poorly understood. It might be due to a different pattern of catecholamine-mediated myocardial dysfunction than classic takotsubo cardiomyopathy. It is often associated with physical and/or emotional stressors. Conclusion: Supportive treatment and identification and prevention of triggers can reduce the recurrence of reverse takotsubo cardiomyopathy. Physicians should be aware of various triggers for this condition.
ABSTRACT
Background: The relation between blood vitamin D levels and the risk of cardiovascular outcomes is debatable. To our knowledge this is the first comparative meta-analysis of more than 100,000 patients' data with the aim to inspect the relevance of low vitamin D levels with adverse cardiovascular events. Methods: Online databases including PubMed, Embase and Cochrane Central were queried to compare the cardiovascular outcomes among hypovitaminosis D (HVD) and control group. The outcomes assessed included differences in major adverse cardiovascular events (MACE), mortality, myocardial infarction, and heart failure. Unadjusted odds ratios (OR) were calculated using a random-effect model with a 95% confidence interval (CI) and P less than 0.05 as a statistical significance. Results: A total of 8 studies including 426,039 patients were included in this analysis. HVD group was associated with a higher incidence of MACE (OR 1.92, 95% CI 1.24 to 2.98, p = 0.003), while there was no significant association of HVD and all-cause mortality (OR 1.77, 95% CI 0.75 to 4.17, p = 0.19), risk of myocardial infarction (OR 0.69, 95% CI 0.39 to 1.24, p = 0.22), and heart failure (OR 1.20, 95% CI 0.34 to 4.25, p = 0.78). Conclusions: This meta-analysis suggested that low blood levels of vitamin D are associated with MACE, but no such difference in all-cause mortality, myocardial infarction or heart failure was observed. Appropriate supplementation of vitamin D in selected populations might be cardioprotective in nature and warrants extensive trials.
