Cardiac Surgery Patient Magnesium Levels and Postoperative Atrial Fibrillation

200 patients were enrolled over a six-month period in the iMagic single-center prospective cohort study. The dataset contains clinical measurements, including plasma ionized and total magnesium levels at multiple time points, for patients undergoing on-pump cardiac surgery. It was created by Mahan Sadjadi to investigate the association between magnesium dynamics and new-onset postoperative atrial fibrillation.

Use Cases

• Predict the incidence of postoperative atrial fibrillation (POAF) using ionized magnesium (iMg) levels measured at anesthesia induction and other time points.
• Analyze the correlation between total magnesium (tMg) concentration and patient outcomes like POAF across 200 patient records.
• Compare electrolyte level trajectories, such as iMg at five pre-specified time points, between patients who developed POAF and those who did not.
• Investigate subgroup associations, for example, whether iMg dynamics have a stronger link to POAF in patients undergoing isolated coronary artery bypass graft (CABG) surgery.

Strengths

• Contains data from 200 prospectively enrolled patients in a clinical cohort study.
• Includes repeated measurements of ionized and total magnesium at multiple perioperative time points.
• Primary outcome (POAF incidence) is clearly defined, with 55 recorded events (27.5%).

Limitations

• Small sample size of 200 patients limits statistical power for subgroup analyses.
• Single-center study design may limit generalizability of findings.
• Dataset is very small at 9.5 KB, indicating limited scope and likely a summary or key variables only.

Provenance

Source

Figshare, authored by Mahan Sadjadi.

Collection Method

Single-center prospective cohort study (iMagic study).

Time Range

Data collected over a six-month enrollment period.

Freshness

Last updated in April 2026.

Geography

Single-center study; specific location not stated.