Objectives: To find correlation between serum Mg, serum Ca, and cardiac arrhythmia. Materials and Methods: The present case–control analytical study includes records of 100 participants; 50 patients (both male and female average age: 47 ± 12 years, mean ± SD) admitted during the period of March 2019–March 2020 into the Coronary Care Unit of LG Hospital, AMCMET Medical College who were clinically diagnosed as arrhythmia and 50 subjects for control group from OPD patients coming to the same institution for health check-up. Mg was estimated with xylitol blue colorimetric end-point method and Ca was estimated by NM-BAPTA Method by Roche Cobas c311 instrument. Results: In 50 cases, mean Mg value was 1.454 mg/dl and SD 0.2566 while in control group, mean value was 2.2 mg/dl and SD is 0.3110 with 95% confidence interval of 1.381–1.527 and 2.199–2.375 for cases and controls group, respectively, which was statistically significant (p < 0.0001). In 50 cases, mean Ca value was 8.6426 mg/dl and SD 1.3 mg/dl while in control group, mean value was 9.5 mg/dl and SD 0.47 with 95% confidence interval of 8.268–9.018 and 9.377–9.643 for cases and controls, respectively, which was statistically significant (p < 0.0028) and shows correlation between serum Ca and serum Mg which are low in cardiac arrhythmias. Receiver operating characteristic analysis of Ca: Mg (3.36) ratio showed optimum cutoff in diagnosis of cardiac arrhythmia. Conclusion: We concluded that serum Mg and Ca along with Ca/Mg ratio should be considered as an important parameter for investigation of cardiac disorders, especially for patients of cardiac arrhythmia.

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Background: Cardiac troponin I (cTnI) is reported to be very specific for myocardial cell damage  without cross reactivity with skeletal muscle isoform. Evaluation of cTnI after CABG will be useful  as an early marker of excessive post operative myocardial damage when a specific therapeutic  intervention can still be efficient and improve outcome. Methodology: The study comprised of 50 patients who undergo Coronary artery bypass surgery  at V.S group of Hospital. Blood sample were taken after 12 hour ( T12) and 24 hour ( T24 ) of post  CABG. The sample were analysed for cTnI. Results: Our results show that Troponin I levels after 2 hours, 12 hours and 24 hours in patients  who had better outcome after CABG was 9.2 ng/ml, 13.9 ng/ml and 10.9 ng/ml respectively.  Whereas, Troponin I levels after 2 hours, 12 hours and 24 hours in patients who had adverse  outcome like death of patients after CABG was 10.6 ng/ml, 38.7 ng/ml and 28.9 ng/ml respectively. Conclusion: Routine measurement of cardiac troponin levels after cardiac troponin can identify  group of patients at increased risk of complications or death.

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