scholarly journals A rare case of gestational thyrotoxicosis as a cause of acute myocardial infarction

2016 ◽  
Vol 2016 ◽  
Author(s):  
Varalaxmi Bhavani Nannaka ◽  
Dmitry Lvovsky
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Rare Case ◽  
Hyperemesis Gravidarum ◽  
Coronary Artery Spasm ◽  
Medical Community ◽  
Channel Blockers ◽  
List Type ◽  
Cardiac Events ◽  
Almost All

Summary Angina pectoris in pregnancy is unusual and Prinzmetal’s angina is much rarer. It accounts for 2% of all cases of angina. It is caused by vasospasm, but the mechanism of spasm is unknown but has been linked with hyperthyroidism in some studies. Patients with thyrotoxicosis-induced acute myocardial infarction are unusual and almost all reported cases have been associated with Graves’ disease. Human chorionic gonadotropin hormone-induced hyperthyroidism occurs in about 1.4% of pregnant women, mostly when hCG levels are above 70–80 000 IU/L. Gestational transient thyrotoxicosis is transient and generally resolves spontaneously in the latter half of pregnancy, and specific antithyroid treatment is not required. Treatment with calcium channel blockers or nitrates reduces spasm in most of these patients. Overall, the prognosis for hyperthyroidism-associated coronary vasospasm is good. We describe a very rare case of an acute myocardial infarction in a 27-year-old female, at 9 weeks of gestation due to right coronary artery spasm secondary to gestational hyperthyroidism with free thyroxine of 7.7 ng/dL and TSH <0.07 IU/L. Learning points: AMI and cardiac arrest due to GTT despite optimal medical therapy is extremely rare. Gestational hyperthyroidism should be considered in pregnant patients presenting with ACS-like symptoms especially in the setting of hyperemesis gravidarum. Our case highlights the need for increased awareness of general medical community that GTT can lead to significant cardiac events. Novel methods of controlling GTT as well as medical interventions like ICD need further study.

scholarly journals Pericoronary fat inflammation and Major Adverse Cardiac Events (MACE) in prediabetic patients with acute myocardial infarction: effects of metformin

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Celestino Sardu ◽  
Nunzia D’Onofrio ◽  
Michele Torella ◽  
Michele Portoghese ◽  
Francesco Loreni ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Adipose Tissue ◽  
Artery Bypass ◽  
Major Adverse Cardiac Events ◽  
Cardiac Events ◽  
Metformin Therapy ◽  
Adverse Cardiac Events ◽  
Factor Α

Abstract Background/objectives Pericoronary adipose tissue inflammation might lead to the development and destabilization of coronary plaques in prediabetic patients. Here, we evaluated inflammation and leptin to adiponectin ratio in pericoronary fat from patients subjected to coronary artery bypass grafting (CABG) for acute myocardial infarction (AMI). Furthermore, we compared the 12-month prognosis of prediabetic patients compared to normoglycemic patients (NG). Finally, the effect of metformin therapy on pericoronary fat inflammation and 12-months prognosis in AMI-prediabetic patients was also evaluated. Methods An observational prospective study was conducted on patients with first AMI referred for CABG. Participants were divided in prediabetic and NG-patients. Prediabetic patients were divided in two groups; never-metformin-users and current-metformin-users receiving metformin therapy for almost 6 months before CABG. During the by-pass procedure on epicardial coronary portion, the pericoronary fat was removed from the surrounding stenosis area. The primary endpoints were the assessments of Major-Adverse-Cardiac-Events (MACE) at 12-month follow-up. Moreover, inflammatory tone was evaluated by measuring pericoronary fat levels of tumor necrosis factor-α (TNF-α), sirtuin 6 (SIRT6), and leptin to adiponectin ratio. Finally, inflammatory tone was correlated to the MACE during the 12-months follow-up. Results The MACE was 9.1% in all prediabetic patients and 3% in NG-patients. In prediabetic patients, current-metformin-users presented a significantly lower rate of MACE compared to prediabetic patients never-metformin-users. In addition, prediabetic patients showed higher inflammatory tone and leptin to adiponectin ratio in pericoronary fat compared to NG-patients (P < 0.001). Prediabetic never-metformin-users showed higher inflammatory tone and leptin to adiponectin ratio in pericoronary fat compared to current-metformin-users (P < 0.001). Remarkably, inflammatory tone and leptin to adiponectin ratio was significantly related to the MACE during the 12-months follow-up. Conclusion Prediabetes increase inflammatory burden in pericoronary adipose tissue. Metformin by reducing inflammatory tone and leptin to adiponectin ratio in pericoronary fat may improve prognosis in prediabetic patients with AMI. Trial registration Clinical Trial NCT03360981, Retrospectively Registered 7 January 2018

Association of Stress hyperglycemia and adverse cardiac events in acute myocardial infarction – A cohort study

2021 ◽  
Vol 22 ◽  
Author(s):  
Annu Rajpurohit ◽  
Bharat Sejoo ◽  
Rajendra Bhati ◽  
Prakash Keswani ◽  
Shrikant Sharma ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Heart Failure ◽  
Acute Myocardial Infarction ◽  
Blood Glucose ◽  
Clinical Outcomes ◽  
P Value ◽  
Cardiac Events ◽  
Stress Hyperglycemia ◽  
Adverse Cardiac Events ◽  
Hba1c Levels

Background: Stress hyperglycemia is a common phenomenon in patients presenting with acute myocardial infarction (MI). We aim to evaluate the association of stress hyperglycemia at the time of hospital presentation and adverse cardiac events in myocardial infarction during the course of hospital stay. Methods: Subjects with age ≥18 years with acute MI were recruited on hospital admission and categorized based on admission blood glucose (<180 and ≥180 mg/dl, 50 patients in each group). Both groups were compared for clinical outcomes, adverse cardiac events and mortality. We also compared the adverse cardiac outcomes based on HbA1c levels (<6% and ≥6%). Results: Patients with high blood glucose on admission (stress hyperglycemia) had significant increased incidences of severe heart failure (Killip class 3 and 4), arrythmias, cardiogenic shock and mortality (p value = 0.001, 0.004, 0.044, and 0.008 respectively). There was no significant association between adverse cardiac events and HbA1c levels (heart failure 18.8% vs. 25%, p value = 0.609 and mortality 16.7% vs. 17.3%, p value = 0.856). Conclusions: Stress hyperglycemia is significantly associated with adverse clinical outcomes in patients with MI irrespective of previous diabetic history or glycemic control. Clinicians should be vigilant for admission blood glucose while treating MI patients.

scholarly journals Participation in Disease Management Programs and Major Adverse Cardiac Events in Patients After Acute Myocardial Infarction.

2020 ◽  
Author(s):  
Christian Fischer ◽  
Jens Höpner ◽  
Saskia Hartwig ◽  
Michel Noutsias ◽  
Rafael Mikolajczyk
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Disease Management ◽  
Cardiac Rehabilitation ◽  
Lower Risk ◽  
Major Adverse Cardiac Events ◽  
Cardiac Events ◽  
Disease Management Programs ◽  
Cardiovascular Morbidity And Mortality ◽  
Adverse Cardiac Events

Abstract Background Cardiovascular diseases are still the main cause of death in the western world. However, diminishing mortality rates of acute myocardial infarction (AMI) are motivating the need to investigate the process of stationary and ambulatory secondary prevention after AMI. Besides cardiac rehabilitation, disease management programs (DMPs) are an important component of outpatient care after AMI in Germany. This study aims to analyze outcomes after AMI among those who participated in DMPs and stationary cardiac rehabilitation (CR) in a region with overall increased cardiovascular morbidity and mortality. Methods: On the basis of data from a regional myocardial infarction registry and a 2-years follow up period, we assessed the occurrence of major adverse cardiac events (MACE) in relation to participation in CR and DMP, risk factors for complications and individual health, and lifestyle characteristics. Multivariable Cox regression was performed to compare survival time until an adverse event occurred.Results Out of 1,094 observed patients AMI, 272 were enrolled in a DMP. A weak association between DMP participation and hazard rates for MACE compared to non-enrollees was found in the crude model (hazard ratio = 0.93; 95% confidence interval = 0.65–1.33). When adjusted for possible confounders, this difference disappeared (1.03; 0.72–1.48). Furthermore, smokers and obese patients showed a distinctly lower chance of DMP enrollment. In contrast, participants of CR showed a lower risk for MACE in crude (0.52; 0.41–0.65) and adjusted analysis (0.56; 0.44–0.71).Conclusions Participation in DMP was not associated with a lower risk of MACE, while CR showed beneficial effects. Adjustment only slightly changed effect estimates in both cases, still potential effects of confounding need to be considered.

scholarly journals Influence of oral magnesium supplementation on cardiac events among survivors of an acute myocardial infarction.

BMJ ◽  
1993 ◽  
Vol 307 (6904) ◽  
pp. 585-587 ◽  
Author(s):  
A M Galloe ◽  
H S Rasmussen ◽  
L N Jorgensen ◽  
P Aurup ◽  
S Balslov ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Cardiac Events ◽  
Magnesium Supplementation ◽  
Oral Magnesium

scholarly journals Full-Size and Partially Truncated Cardiac Troponin Complexes in the Blood of Patients with Acute Myocardial Infarction

2019 ◽  
Vol 65 (7) ◽  
pp. 882-892 ◽  
Author(s):  
Alexandra V Vylegzhanina ◽  
Alexander E Kogan ◽  
Ivan A Katrukha ◽  
Ekaterina V Koshkina ◽  
Anastasia V Bereznikova ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Troponin I ◽  
Troponin T ◽  
Gel Filtration ◽  
Free Form ◽  
Plasma Samples ◽  
Full Size ◽  
Troponin Complex ◽  
Almost All

AbstractBACKGROUNDThe measurement of cardiac isoforms of troponin I (cTnI) and troponin T (cTnT) is widely used for the diagnosis of acute myocardial infarction (AMI). However, there are conflicting data regarding what forms of cTnI and cTnT are present in the blood of AMI patients. We investigated cTnI and cTnT as components of troponin complexes in the blood of AMI patients.METHODSGel filtration techniques, sandwich fluoroimmunoassays, and Western blotting were used.RESULTSPlasma samples from patients with AMI contained the following troponin complexes: (a) a cTnI-cTnT-TnC complex (ITC) composed of full-size cTnT of 37 kDa or its 29-kDa fragment and full-size cTnI of 29 kDa or its 27-kDa fragments; (b) ITC with lower molecular weight (LMW-ITC) in which cTnT was truncated to the 14-kDa C-terminal fragments; and (c) a binary cTnI-cTnC complex composed of truncated cTnI of approximately 14 kDa. During the progression of the disease, the amount of ITC in AMI samples decreased, whereas the amounts of LMW-ITC and short 16- to 20-kDa cTnT central fragments increased. Almost all full-size cTnT and a 29-kDa cTnT fragment in AMI plasma samples were the components of ITC. No free full-size cTnT was found in AMI plasma samples. Only 16- to 27-kDa central fragments of cTnT were present in a free form in patient blood.CONCLUSIONSA ternary troponin complex exists in 2 forms in the blood of patients with AMI: full-size ITC and LMW-ITC. The binary cTnI-cTnC complex and free cTnT fragments are also present in patient blood.

Sign in / Sign up

Export Citation Format

Share Document