//At the top of the script:

new Float:posX[MAX_PLAYERS], Float:posY[MAX_PLAYERS], Float:posZ[MAX_PLAYERS];
new VW[MAX_PLAYERS], INTERIOR[MAX_PLAYERS];

// OnPlayerDeath

GetPlayerPos(playerid, posX[playerid], posY[playerid], posZ[playerid]);
INTERIOR[playerid] = GetPlayerInterior(playerid);
VW[playerid] = GetPlayerVirtualWorld(playerid);

// Then, you should detect class selection and spawn player sending the pos and putting player in position.

SetPlayerPos(playerid, posX[playerid], posY[playerid], posZ[playerid]);
SpawnPlayer(playerid);

// OnPlayerSpawn

SetPlayerPos(playerid, posX[playerid], posY[playerid], posZ[playerid]);
SetPlayerInterior(playerid, INTERIOR[playerid]);
SetPlayerVirtualWorld(playerid, VW[playerid]);
// You can set an animation if you want.
// Now you have to send a message to the medic faction. I don't know how your system goes so I can't help you more.