I don’t know 100% what you mean by a “PVS” but by the responses I am assuming that this is some form of incapacitation caused through no action of the husband. That being the case, in most states sex with your wife in that state is likely not rape (due to implied consent laws) - IANAL, so take this as you will. For example, see the WV Statute: http://www.fris.org/Pages/WVLaw.html
Relevant Section:
61-8b-5. Sexual Assault of a Spouse
(a) For the purpose of this subsection:
“Sexual intercourse” means any act between persons married to each other involving penetration, however slight, of the female sex organ by the male sex organ or involving contact between the sex organs of one person and the mouth or anus of his or her spouse.
“Sexual intrusion” means any act between persons married to each other involving penetration, however slight, of the female sex organ or of the anus of either person by an object for the purpose of degrading or humiliating the person so penetrated or for gratifying the sexual desire of either party.
(b) A person is guilty of sexual assault of a spouse when such person engages in sexual penetration or sexual intrusion with his or her spouse without the consent of the spouse; and
(i) The lack of consent results from forcible compulsion; or
(ii) Such person inflicts serious bodily injury upon anyone; or
(iii) Such person employs a deadly weapon in the commission of the offense.
© Any person who violates the provisions of this section shall be guilty of a felony, and, upon conviction thereof, shall be imprisoned in the penitentiary not less than 2 nor more than 10 years, or fined not more than $5,000.00 and confined in the penitentiary not less than 2 nor more than 10 years.
So you don’t just need lack of consent, you have to have lack of consent from forciple compulsion for it to be rape:
“Forcible compulsion” means:
(a) Physical force that overcomes such earnest resistance as might reasonably be expected, under the circumstances; or
(b) Threat or intimidation, expressed or implied, placing a person in fear of immediate death or bodily injury to himself or another person or in fear that he or another person will be kidnapped; or
© Fear by a child under sixteen years of age caused by intimidation, expressed or implied, by another person four years older than the victim.
For the purpose of this definition “resistance” includes physical resistance or any clear communication of the victim’s lack of consent.
So it looks like you would be in the clear, in WV as long as you didn’t have to assualt anyone to get to your wife, and you didn’t have anything to do with incapacitating her…