| More severe episodes may progress to respiratory difficulties, hypotension, or cardiac dysrhythmias. |
| Other reasons for sudden death include cardiac dysrhythmias related to hypoxia, hyperinflation leading to air trapping, and tension pneumothorax. |
| An electrocardiogram should be obtained to detect dysrhythmias, and brain imaging should be performed if neurologic findings are present. |
| The role of digoxin in the treatment of a failing heart without dysrhythmias is unclear. |
| Signs of toxicity include cardiac dysrhythmias, nausea, tremor, and headache. |
| Although rare, cardiac dysrhythmias, heart failure, or intracerebral hemorrhage can occur. |
