Loading presentation...

Present Remotely

Send the link below via email or IM


Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.


OM Chapter10 CaseStudy

By Stephanie & Sarita

Sarita Needham

on 15 November 2013

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of OM Chapter10 CaseStudy

Chapter 10: Orthopedic Surgeon Case Study
David Christopher:
Orthopedic Surgeon

Surgery clinic of him
& one other surgeon
12 support personnel

Surgeries 5 hours every morning, 4 days/week
7am-12pm Monday-Thursday

Clinic hours from 1pm-6pm
Both surgeons working long hours
Do they need to hire more surgeons for the weekly workload they have?
Want 10% safety capacity
Current Workload
Available Working Hours per Surgeon per Week:
1 surgeon x 5 hrs/day x 4 days/week x 60 min/hr

= 1200 minutes/surgeon/week
x 2 surgeons = 2400 min/week of available surgery time
The 2415 scheduled mins is above the 2400 maximum capacity

10% safety capacity = 90% utilization rate
1200 minutes x 0.10 = 120 min of safety capacity per doctor
= 240 min total
Safety Capacity:
1200 minutes/surgeon/week – 120 minutes
= 1080 minutes per surgeon
2400 minutes – 240 minutes = 2160 minutes per week available total

Total Actual Available Hours with 10% Safety Capacity:
Determining Ideal Number of Surgeons:
2415 min/wk/surgeon / 1080 min/wk/surgeon
= 2.2361 surgeons
Demand = 2415
Available hours (with safety capacity) per surgeon = 1080

a. Hire one part time surgeon (only mornings four days a week)
3 surgeons x 1080 minutes/doctor/week = 3240 minutes

b. Hire one part time surgeon (2 mornings for a total of 10 extra hrs)
2.5 surgeons x 1080 minutes/doctor/week = 2700 minutes

(These are too high for our needed capacity)

c. Hire an extra surgeon only one day a week (total of 5 extra hrs)
2.25 surgeons x 1080 minutes/doctor/week = 2430 minutes

(This is closest to the 2415 scheduled minutes and thus would have the least idle paid time)
How many surgeons?
Other Alternatives to Optimize Throughput:
Current workload = 2415 minutes per week
No extra surgeons - use current two surgeons to capacity, but schedule
one less achillies tendon repair:

2415 minutes – 50 minutes (achillies tendon repair)
= 2,365 scheduled minutes

This results in approximate 1.5% safety capacity:

1 – 2365 min scheduled/2400 min available x 100% = 1.458%

Alternative A:
Alternative B:
Alternative C:
Alternative D:
Maintain a 10% safety capacity and 2 surgeons, but schedule less surgeries:

2415 minutes scheduled – 2160 minutes available = 255 minutes above capacity

If we take out a rotator cuff (90 minutes) and 2 ACL ligament repairs (80 minutes each) this adds up to 250 minutes, which is close to the 10% safety capacity that we want.

Safety capacity = 1 – 2165 minutes schedules/2400 minutes available x 100%
= 9.792%

Extend hours of surgery to 7am – 1pm with lunch from 1 – 2pm and maintain 10%
safety capacity:
2 surgeons x 6 hr/day x 4 days/wk x 60 min/hr = 2880 minutes per week
2880 x 0.10 = 288 minutes safety capacity
2880 – 288 = 2592 minutes available surgery time

This results in 177 more minutes than currently scheduled. Possible surgeries to schedule in this time:
• A knee surgery repair (180 minutes – would result in just under 10% safety capacity
• Two extra rotator cuff surgeries (180 minutes)
• 2 extra ACL ligament repairs (160 minutes)
• Highest in demand, and still more than 10% safety capacity

Alternative C fails to support post-surgery patient care normally from 12-2pm

Hire an additional doctor for the extra 2 hours each day to take care of the patients normally scheduled for the surgeons during those hours.
Lacking information:
on cost to hire extra doctor vs. hiring extra surgeon
on how excess revenue earned from the extra surgeries would off-set the cost of another doctor or surgeon.
We assume:
more cost effective to hire a doctor 8 hours/week compared to a surgeon for 5 hours/week
that this is in an ideal world

We recommend:
Questions or
Alternative D
Full transcript