I think it's worth looking at the dilemma of ESP - we use the same scale (A1,A2,B1 etc) as we use for General English but still expect students to deal with specialised vocabulary. Fortunately, many students of English for Nurses have the advantage of knowing these specialised terms in their own language. Unfortunately, many teachers of English for Nurses do not have this background knowledge.
The difficulties for learners are:
1. How to spell the terms in English e.g. hypertension not hipertensión. Similar but not the same!
2. How to pronounce terms which look similar to familiar terms - there are several online dictionaries which offer a pronunciation button. Examples are The Free Dictionary or Merrriam Webster Medical Dictionary. Look up the term and listen to the pronunciation.
I recommend making your own small notebook which you can carry around with you. Write the term down, listen to the pronunciation and mark the stressed part of the word. Saying words with the correct stress is an important part of being understood easily.
As far as knowledge of English for Nurses at A2 level is concerned - it is really no different from any other level. It's about communication. At a lower level, you need to be able to use simple questions and make simple statements accurately, e.g. Asking for information - simple 'Wh' questions:
- How do you feel today?
- Where is the pain?
- Where do you live?
As you improve you can move onto open questions (ones which get the other person talking). These are more complex, e.g. 'Can you tell me a bit more about how you are feeling today?'
You need to practise simple requests - Can you....,please? Will you..... ,please?:
- Can you lift your arm,please?
- Will you take this tablet,please?
It's a good idea to go back to your General English lessons and see how they fit in with a hospital situation. For example, the lesson you did on making an arrangement to meet a friend for a coffee becomes 'Making an appointment for a patient to have an X-ray'. The language structures are the same. You talk about times and future forms.
Try to learn expressions you will come across frequently, especially 'verb + preposition'. Learn them together. Examples are:
- refer (a patient) for ( a test)
- present with (chest pain, heart burn, shortness of breath)
- commence on (a medication)
Try to learn the everyday expressions used in place of medical terms:
- shortness of breath = dyspnoea
- heartburn = dyspepsia
- high blood pressure = hypertension
If you can, find role plays ( e.g I have made many role plays into short videos on my You Tube channel). Practise them with a friend or study buddy. Write your own and practise them. This helps you get a feel of the language you will use in authentic situations.