A near miss

8 Dec
2009

Some time ago, I was making post call rounds.  The team presented a patient admitted from the oncology service.  He was in his 50s and had new chest pain.  He described the chest pain as substernal pressure with radiation down both arms.  He received relief from stretching against the wall.  The pains lasted around an hour.

The team reported a negative nuclear medicine stress test 2 months ago.

When I talked with the patient, his story seemed 50% perfect and 50% strange.  I asked if the patient had ever tried nitroglycerin, and he had not.

His ECG was unremarkable.  His troponins were normal.

The housestaff were skeptical (as I would likely have been at that stage of my career).  They focused on the atypical parts of his story.

I suggested that we try ntg for any pain episodes and obtain a stat ECG.

The story did not make sense, so I looked up the stress test.  Behold it was not a stress test, but rather a MUGA scan.  My team unfortunately did not know the difference.

We rarely use MUGA scans these days.  The scans are primarily used to follow a class of chemotherapeutic drugs that damage the heart – adriamycin being the drug he was taking.  They can show old damage, but are mostly used to estimate ejection fraction.

The team had misinterpreted the scan results.  Because no stress is involved, this test does not substitute for any form of stress test.

Overnight he had chest pain relieved by nitroglycerin, with no ECG changes.  His MIBI was remarkably abnormal, and his cardiac catheterization showed 80% left main disease.

Fortunately, this story turned into a teachable moment.  We had a near miss the sobered us all.  By proceeding with the evaluation the patient did get the appropriate management.

This story reminds me that patients do not always give perfect stories.  As I get older I focus on the parts that fit with the most dangerous diagnosis so that I do not miss something really important.

Related posts:

  1. Too many CT scans
  2. Costs – why they are too high
  3. In which at least 2 commenters miss my point
  4. 17 days at the VA – Day #7
  5. Will biking hurt my bones?

Related posts brought to you by Yet Another Related Posts Plugin.

2 Responses to A near miss

Avatar

Margaret Polaneczky, MD

December 8th, 2009 at 8:43 am

Nice save.
I've learned over the years to get the op notes for any major operation my patient claims to have had on her uterus or ovaries, and the results of their most recent bone density or mammogram that they tell me was "normal". Such reviews have turned up diagnoses such as osteoporosis, cervical cancer, breast cancer and more that my patients failed to tell me about in their history.   

Avatar

Graham

December 8th, 2009 at 8:58 am

And even if the stress test is normal, the sensitivity is at best mid-80s. Still missing a lot!

Comment Form