Let us say the barbarian in the group took a lot of damage in a fight. Maybe due to several hits or even a critical hit or two.
Can you use treat deadly wound (1 hour) and later spend 8 more hours for long-term care to regain hit points? To me it appears as if they are two different sources of regaining hit points, but that the character needs to be quite beaten to qualify for being treated as if deadly wounded.
I see no restrictions to what treat deadly wounds qualifies to treat and not. Damage and loss of hit points is not a complex thing in D&D if not using called shot rules. I`ve read in forums that others say that generally loss of hit point represents the character being worn down.
As answered here by Pulsehead on the topic on treating several people with deadly wounds:
This is different from getting cut and needing a few stitches. Treat Deadly Wounds is a character's Aorta is nicked/cut. They are bleeding out. You need both hands on the wounded character, your attention to keep them awake/alert (so they don't pass out/go into shock) and frequently you need someone else to pass you stuff as necessary.
Doesn´t a injury of this kind represent dropping to -1 hp and bleeding 1 hp a round? Of course you can be dropped to -1 and bleed out and the GM says its because of a cut vein (great roleplaying flavour!), but then again you need to use heal to first stabilizing the character before using treat deadly wound right? As the character would die in 10 rounds and 1 hour would take to long as it does not stop the bleeding? You need first aid for that first (Not considering a hit point loss of 1 per hour here).
So a new scenario:
- The barbarian kills the boss but drops to -1 hp and bleeds for 1 hp a round.
- A party member runs over and use the heal skill: First aid to top the bleeding.
Provide First Aid
You usually use first aid to save a dying character. If a character has negative hit points and is losing hit points (at the rate of 1 per round, 1 per hour, or 1 per day), you can make him stable. A stable character regains no hit points but stops losing them. First aid also stops a character from losing hit points due to effects that cause bleed.
Action/Time: 1 standard action.
- Next the same party member begins "treating deadly wound" with the heal skill taking one full hour of work spending two charges of his healer´s kit.
Treat Deadly Wounds*
Requirement: You must expend two uses from a healer's kit to perform this task. You take a –2 penalty on your check for each use from a healer's kit that you lack.
When treating deadly wounds, you can restore hit points to a damaged creature. Treating deadly wounds restores 1 hit point per level of the creature. If you exceed the DC by 5 or more, add your Wisdom modifier (if positive) to this amount. A creature can only benefit from its deadly wounds being treated within 24 hours of being injured and never more than once per day.
Action/Time: 1 hour.
- After one hour the same party member decides to put the barbarian to bed with a fresh cold mug of mead and begin to perform Long-term care.
Provide Long-Term Care
Providing long-term care means treating a wounded person for a day or more. If your Heal check is successful, the patient recovers hit points or ability score points (lost to ability damage) at twice the normal rate: 2 hit points per level for a full 8 hours of rest in a day, or 4 hit points per level for each full day of complete rest; 2 ability score points for a full 8 hours of rest in a day, or 4 ability score points for each full day of complete rest.
You can tend as many as six patients at a time. You need a few items and supplies (bandages, salves, and so on) that are easy to come by in settled lands. Giving long-term care counts as light activity for the healer. You cannot give long-term care to yourself.
Action/Time: 8 hours.
I see nothing that states that you can´t do all of this in the following order. Or do you have to choose to either treat deadly wounds or using long-term care? (as long as the GM and players agree to that the amount of lost hit points "qualifies" as a deadly wound I see no reason as to not use both in as separate actions).
I think it´s a matter of judgement and perspective as RAW does not have any clear lines to this subject.