Postoperative Atrial Fibrillation and Magnesium Levels in Cardiac Surgery Patients

Plasma ionized and total magnesium measurements from 200 patients undergoing on-pump cardiac surgery, collected at five pre-specified time points. The dataset records the incidence of new-onset postoperative atrial fibrillation (POAF), which affected 55 patients (27.5%). Mahan Sadjadi created this dataset from a single-center prospective cohort study conducted over six months.

Use Cases

• Analyze association between ionized magnesium levels at anesthesia induction and POAF incidence in isolated CABG patients.
• Compare temporal dynamics of plasma-iMg and plasma-tMg measurements across five time points between patients with and without POAF.
• Investigate subgroup differences in magnesium levels for patients undergoing isolated coronary artery bypass graft surgery versus other cardiac procedures.
• Model the risk of new-onset atrial fibrillation using perioperative electrolyte measurements and patient surgery type.

Strengths

• 200 patient records from a prospective cohort study design.
• Measurements for ionized and total magnesium captured at five specific perioperative time points.
• Clear primary outcome with 55 POAF cases (27.5% incidence rate) documented.

Limitations

• Small sample size of 200 patients from a single center limits generalizability.
• Exploratory findings on iMg association with POAF in CABG patients are preliminary and require validation.
• Dataset is very small at 5.5 KB, indicating limited scope and likely few variables beyond core measurements.

Provenance

Source

figshare, authored by Mahan Sadjadi.

Collection Method

Single-center prospective cohort study (iMagic study) with plasma measurements taken at pre-specified time points.

Time Range

Data collected over a six-month study period.

Freshness

Last updated in April 2026.

Geography

Single-center study; geographic location not specified.