|Must Uncomplicated Lacerations Be Repaired Within Eight Hours?|
|By Jeffrey E. Keller MD|
What do you think of the rule for lacerations that says a laceration has to be sutured within six hours or it cannot be sutured at all? At our facility, we send lots of inmates to the ER for simple cuts because the PA isn’t scheduled to be at the facility until the next day. If a cut is 10 hours old, why can’t it be fixed? Where did this rule come from? Kim A.
Thanks for the question, Kim. The short answer to this question is that that this belief is a myth. Uncomplicated lacerations can, indeed, wait more than 6 hours to be repaired.
Early in my medical career, I was taught the same rule, only I heard that it was the Eight Hour Rule. I remember patients coming to the ER where I was working as an orderly being told that their laceration could not be sutured because it was, say, ten hours old. I was told that the reason for this was that the risk of infection goes up way up with laceration age and after eight hours, they mostly all got infected. Wrong-o!
The first inkling I had that this is not true was when I was doing my Emergency Medicine residency and was taught about “Delayed Primary Closure.”Delayed primary closure works like this: Let’s say you are faced with a really dirty laceration. Let’s say, for example, that the patient is a dairy worker and the wound has cow manure in it. What you do is clean the wound thoroughly and then pack the wound with a saline dressing and send the patient home. A day or two later, you check the open wound. If it still looks good, you again place a moist dressing. On day 3-5, if the wound looks clean with no signs of infection, you sew it up. (Details about Delayed Primary Closure can be found in Roberts: Roberts and Hedges’ Clinical Procedures in Emergency Medicine, 6th ed.; Chapter 34 – Principles of Wound Management >> Closure>>Delayed Primary or Secondary Closure).
Note that this dirty wound was eventually sutured not just longer than 8 hours but up to five (5) days later! If you believe in the original 8-hour rule, this leads to the logical head scratcher that if a wound is ten hours old and is clean and uncomplicated, we can’t sew it up; but if it is grossly dirty, then we can—by doing delayed primary closure. Hmmmm.
Fortunately, we have more to go on than just this comparison to delayed primary closure. The timing of wound closure has actually been studied several times. Here is a sampling:
Of course, these should be uncomplicated wounds. Examples of complicating factors that might lead you to send the patient to the ER immediately include:
I have noticed that many practitioners in correctional medicine are “rusty” or even have never had adequate training in suturing and wound closure techniques. Closing The Gap is a wonderful free web site devoted to teaching principles of suturing. It has sections on basic suturing techniques, such as basic interrupted sutures, mattress sutures and running sutures, as well as more advanced stuff for those interested.
Definitely bookmark this site in the “Education” folder on your browser!
As always, I express my own opinions on this site. Feel free to disagree! I could be wrong. But if you do, please tell us why in comments!
Corrections.com author, Jeffrey E. Keller is a Board Certified Emergency Physician with 25 years of practice experience before moving full time into the practice of Correctional Medicine. He is the Chief Medical Officer of Centurion. He is also the author of the "Jail Medicine" blog
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