A hospital decided to streamline its surgical suite operation.The nurses in charge studied the amount of time patients actually spent in various activities.They found that,on average,a patient scheduled for an operation spent about 2 hours waiting and 2.5 hours moving from the lab to the X-ray to the operating room.The average operation takes 120 minutes.What is the MCE?
A)20.0%
B)30.8%
C)50.0%
D)60.8%

Question

Quizplus · Accepted Answer

MCE (Manufacturing Cycle Efficiency) is calculated as the ratio of value-added time to total lead time. 
Value-added time in surgical suite operation is the actual operation time, which is 120 minutes in this case. 
Total lead time is the sum of waiting time and moving time, plus the actual operation time. 
Hence,

Total lead time = waiting time + moving time + actual operation time 
= 2 + 2.5 + 2 = 6.5 hours or 390 minutes

Value-added time = actual operation time = 120 minutes

Therefore,

MCE = Value-added time / Total lead time x 100% 
= 120 / 390 x 100% 
= 30.8%

So, the best choice is B) 30.8%.

A Hospital Decided to Streamline Its Surgical Suite Operation