may I plz take your opinion about patient I cared for during my sho year in Egypt. I had a 17yr old girl with prosthetic mitral valve for rheumatic heart disease. she came few months postop with heart failure, endocarditis, was cachectic, anemic, and in chronic slow AF which frequently turned into rapid AF. the resident had prescribed her 0.9 saline and dextrose infusion due at night over a short infusion period. she was stable before the infusion but 15 minutes before it, she developed markedly increased dypnoea orthopnoea restlessness as used to happen to her. the nurse asked me whether to run the prescribed infusion of saline according to previous residents order in view of her current deterioiration. I told her there was no problem and she started the drip; the patient took about 125-150ml over a 10 minute period and then suddenly arrested and died inspit of cpr.without any preceding warning signs. I am quite worried know that perhaps the saline bolus aggravated her heart failure markedly causing hypoxic death or inciting Vtac and VF. the resident had told me that her episode of dyspnea which started before infusion was probably rapid AF. thank you very much