From: Electrocardiographic findings of methanol toxicity: a cross-sectional study of 356 cases in Iran
 |  | Frequency | Percent | |
---|---|---|---|---|
Alcohol dependency | 142 | 39.9 | ||
Other substance abuse | 32 | 9.0 | ||
Comorbidity | Cardiac | HTN | 18 | 5.1 |
PCI | 4 | 1.1 | ||
PTE | 1 | 0.3 | ||
Non-cardiac | DM | 6 | 1.7 | |
Seizure | 2 | 0.6 | ||
Probably Asthma | 3 | 0.8 | ||
Malignancy | 2 | 0.6 | ||
Psychiatry | 2 | 0.6 | ||
Hemophilia | 1 | 0.3 | ||
Down syndrome | 1 | 0.3 | ||
Fatty liver | 1 | 0.3 | ||
Splenectomy | 1 | 0.3 | ||
Hypothyroid | 1 | 0.3 | ||
Decreased visual acuity | 251 | 70.5 | ||
Death | 59 | 16.6 | ||
Renal failure | 137 | 38.5 | ||
GCSS | GCSS 15 | 252 | 72.6 | |
GCSS 3 | 48 | 13.8 | ||
GCSS 4–14 | 47 | 13.5 | ||
Rhythm | Sinus | 341 | 98.0 | |
Atrial fibrillation | 3 | 0.9 | ||
Low atrial rhythm | 2 | 0.6 | ||
Accelerated idio-ventricular rhythm | 2 | 0.6 | ||
Rate | Normal | 251 | 71.3 | |
> 100 | 89 | 25.3 | ||
< 60 | 12 | 3.4 | ||
Axis | Normal | 296 | 83.5 | |
Right | 36 | 10.1 | ||
Left | 19 | 5.3 | ||
Extreme | 4 | 1.1 | ||
Hypertrophy and enlargement | RV | 9 | 2.6 | |
RA | 8 | 2.3 | ||
LV | 6 | 1.7 | ||
LA | 9 | 2.6 | ||
Mixed | 8 | 2.3 | ||
Infarction | 19 | 5.5 | ||
AVB | First degree | 11 | 3.2 | |
Third degree | 1 | 0.3 | ||
J point elevation | 245 | 70.6 | ||
Brugada pattern | Type 1 | 4 | 1.2 | |
Type 2 | 3 | 0.9 | ||
Type 3 | 13 | 3.7 | ||
Early repolarization | 168 | 48.4 | ||
Osborn wave | 13 | 3.7 | ||
QTc | <=500 | 278 | 80.1 | |
> 500 | 69 | 19.9 | ||
QTd | < 40 | 179 | 51.6 | |
> = 40 | 168 | 48.4 | ||
Fragmented QRS | 120 | 34.7 | ||
BBB | RBBB | 24 | 7.0 | |
LBBB | 2 | 0.6 | ||
IVCD | 2 | 0.6 | ||
U wave | 212 | 61.3 | ||
Poor R progression | 14 | 7.0 | ||
Low voltage | 15 | 4.3 |