Which of the following are true regarding 12 lead ECGs’?    …

Which of the following are true regarding 12 lead ECGs’?           I.        There are a total of 10 leads           II.       There are a total of 12 leads           III.      There are 6 limb leads           IV.     Avr lead  stands for advanced precordial lead in the retrocardiac reference

The client diagnosed with angina is prescribed nitroglyerin…

The client diagnosed with angina is prescribed nitroglyerin (Nitrobid) and tells the nurse, “I don’t understand why I can’t take my Viagra. I need to take it so that I can make love to my wife.” Which complication and statement is the nurse’s best response?