Well personally I would not recommend a voice recorder. At what point are you going to be speaking into this thing, or do you mean something that continuously records your entire interview?
How do you think the patient will feel about it? You should also inform them at the start that they are being recorded as well. Now I don't know about you, but I have run across many patients in precarious situations that would extremely object to being recorded. I also would never get some vital information pertinent to their exam or history had I been recording.
Also, if this is some sort of questionable patient (crime, assault, rape, whatever) and the police know about your recording, or your service knows of this practice, the possibility exists that your recordings could be declared as evidence. I certainly do not want any recordings of me in a court of law ever. It has been a scary enough experience when just my reports were there and I was testifying.
It seems like a very bad idea. I would just practice over and over with your exam questions, and eventually you will formulate a pattern that works for you, one that flows every time.
Practice practice practice. It is ok to be nervous and none of us were doing the perfect, error free patient interview from the get go.
As for taking pictures on scene, this is a bad idea for a couple reasons.
1. Possible privacy invasions/complaints
2. Loss of control of the photos ( you share with a buddy, they get on the net, then see #1) This has already happened unfortunately
3. It does NOT help the doctor perform a better exam. The doctor should perform the same exam for every patient regardless of how the vehicle looks.
Damage of a vehicle is not a good indicator of injury. I have had multiple roll overs where they walked away, and then I have had fender benders with critical patients.
The Level I trauma center I used to transport to asked us specifically to STOP bringing in Polaroids because they did not want to tunnel vision their assessments. They wanted to do a complete and detailed exam every time with no preconceived notions of what potential injuries may exist by glancing at a picture. It did nothing for them or their assessments.
Newer cars are made to crumple to absorb impact, so a low impact, no injured patient may still present as the most awful wreck you ever seen until you delve deeper into your exam and realize the pt is ok.
Older cars were heavier and did not crumple, so while the car may look undamaged, the patient probably is not, as they absorbed the impact with their bodies.