What treatment may be needed for patients who have frequent episodes of sinus exit block with bradycardia?

Your patient has ingested cyanide in a suicide attempt. Which of the following is the primary threat to life you should anticipate?

A) Hypotension B) Pulmonary edema C) Cellular asphyxia D) Liver failure

Radiation dose is directly proportional to the square of the distance to the source

Indicate whether the statement is true or false.