Effect of Anesthesia Technique on Early Outcome in Diabetic Patients Undergoing Lower Extremity Amputation

early prognosis (mortality)

death within 30days after surgery

Time frame: 30days after surgery

early prognosis (Unexpected return To The Operation Room)

Indicate whether the patient was unexpectedly returned to the Operation Room during this hospital visit.

Time frame: 30days after surgery

early prognosis (Renal failure)

Indicate whether the patient had acute renal failure or worsening renal function resulting in ONE OR BOTH of the following: 1. Increase in serum creatinine level 3.0 x greater than baseline, or serum creatinine level \>=4 mg/dL. Acute rise must be at least 0.5 mg/dl 2. A new requirement for dialysis postoperatively.

Time frame: 30days after surgery

early prognosis (Pneumonia)

Indicate if the patient experienced pneumonia in the postoperative period. Pneumonia is defined as meeting three of five characteristics: fever, leucocytosis, CXR with infiltrate, positive culture from sputum, or treatment with antibiotics.

Time frame: 30days after surgery

early prognosis (Respiratory failure)

Indicate whether the patient experienced respiratory failure in the postoperative period requiring mechanical ventilation and/or reintubation.

Time frame: 30days after surgery

early prognosis (DVT Requiring Treatment)

Indicate whether the patient has experienced a deep venous thrombosis (DVT) confirmed by doppler study, contrast study, or other study that required treatment.

Time frame: 30days after surgery

early prognosis (Myocardial Infarct)

Indicate if the patient experienced a MI postoperatively as evidenced by: 1. Transmural infarction: Defined by the appearance of a new Q wave in two or more contiguous leads on ECG, or 2. Subendocardial infarction: (non-Q wave) Infarction, which is considered present in a patient having clinical, angiographic, electrocardiographic, and/or 3. Laboratory biomarker (CPK,Troponin) evidence of myocardial necrosis with an ECG showing no new Q waves