To identify determinants of 'good and bad recovery' from ICUAW and build knowledge around the timing of these processes. Also, the investigators want to discover the effects of ICUAW on physical function and HRQoL following aortic surgery.
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To observe the change in cross sectional area of the Rectus Femoris (RFcsa) during critical illness and recovery.
Timeframe: Pre-operatively, day 7/Hospital Discharge and 6-15week follow up clinic.
To Observe a change in Hand Held Dynamometry strength (grip strength) and correlate this with RFcsa, function and HRQoL during critical illness and recovery.
Timeframe: Pre-operatively, Day 7/Hospital Discharge and 6-15 week follow up clinic.
To observe a change in Knee straightening dynamometry, strength and joint moment (torque) and correlate this with RFcsa, function and HRQoL during critical illness and recovery.
Timeframe: Pre-operatively, Day 7/Hospital Discharge and 6-15 week follow up clinic.
To observe a change in Short Physical Performance Battery (SPPB) and correlate this with RFcsa, function and HRQoL during critical illness and recovery.
Timeframe: Pre-operatively, Day 7/Hospital Discharge and 6-15 week follow up clinic.
Lying and Standing Vital Capacity (FVC - forced vital capacity) and correlate this with RFcsa, function and HRQoL during critical illness and recovery.
Timeframe: Pre-operatively, Day 7/Hospital Discharge and 6-15 week follow up clinic.
To measure Free Fat Mass Index (FFMI) and correlate this with RFcsa, function and HRQoL during critical illness and recovery.
Timeframe: Pre-operatively, Day 7/Hospital Discharge and 6-15 week follow up clinic.
To measure the EQ-5D-5L (Euroscore) to assess general health and correlate this with the primary objective (RFcsa).
Timeframe: Pre operatively, Day 7/Hospital discharge and 6-15 week follow up.
Hospital anxiety and depression score (HADS) to assess HRQoL and correlate this with the overall primary objective (RFcsa).
Timeframe: Pre-operatively, Day 7/Hospital discharge and 6-15 week follow up.
Reintegration to normal living index (RNLI) to assess HRQoL and correlate this with the overall primary objective (RFcsa).
Timeframe: Pre-operatively and 6-15 week follow up clinic.