Calibrated Systems Archives

Life-Stat® Saves the Life of a Woman Clinically Dead for 45 Minutes

Julia Sims is a family woman.  On March 19, 2011, she suffered a massive cardiac arrest.  Just minutes after her arrest Julia’s husband called 911 and began performing manual CPR.  Local EMS responded to his 911 call within four minutes and immediately switched to Life-Stat mechanical CPR.  After 45 minutes of continuous, uninterrupted chest compressions and 12 shocks from an AED Julia was revived. 

Julia survived her cardiac arrest “Neurologically Intact,” which is to say that she suffered no brain damage as a result of the incident.  In many cases of cardiac arrest the brain can suffer massive damage as blood flow to it can be inconsistent, unpredictable, and ultimately ineffective.  The Life-Stat®, allows for “High-Impulse” compressions that ensure good circulation of blood both to the brain and to other vital organs. Immediate manual CPR is extremely important, but its effectiveness is lessened over time as responders get tired.  Even the downtime that results from responders swapping out during a code can cause serious damage to vital organs due to a lack of circulation[1].  The Life-Stat® eliminates this downtime and has been successfully used on patients for more than 14 hours at a time[2].  

 

 

The Life-Stat® Model 1008 in Action

Leonard Osborn, 56, suffered a heart attack in July of 2011.  His wife, Carol, responded by performing manual CPR and contacting the local emergency department immediately.  An ambulance arrived four minutes later and transferred Leonard to a Life-Stat® 1008 mechanical CPR device (sometimes referred to as a "Thumper").  Twelve minutes later Leonard achieved “Return of Spontaneous Circulation” (ROSC) and was eventually discharged from the hospital, neurologically intact.   He was without a heartbeat of his own for 16 minutes.

Leonard’s survival was a result of a combination of a quick response time and the presence of proper equipment.  In the case of any cardiac arrest, the most important determining factor in the survival of the patient is prompt action.  Carol’s use of manual CPR allowed her husband to maintain cell function long enough for the EMS team to arrive.  This, combined with the perfusion pressure and flow produced by the Life-Stat® allowed Leonard to survive cardiac arrest.

 

Mechanical CPR offers many great advantages to medical personnel.  Use of a Life-Stat during a rescue attempt delivers a 97% compression performance as compared to manual CPR’s estimated 37%[1], drastically improving the patient’s chance of survival, especially in cases of long-term treatment.  It takes less than 5 seconds to transfer a patient from manual CPR to a Life-Stat, which will both ventilate the patient and continue chest compressions, leaving paramedics and other responders with their hands free during a rescue operation.  Use of a Life-Stat® is recommended in all adult cases of cardiac arrest. 

 

 


[1] Stapleton, Edward R.  (1991) Comparing CPR During Ambulance Transport.  Manual vs. Mechanical Methods.  JEMS, 1991 Sep; 16(9): 63-4, 66, 68, 71-72.

[2]Schaar, H.; A. Reininghaus; and H. Schmitt (1985) Long-term mechanical cardiac massage in a case of intoxication with a lethal dose of beta-blocker, antidepressants and flurazepam. Proceedings of the Ludwig-Boltzmann Symposium, Academic Teaching Hospital of RWTH Aachen, 1985 Mar; 1-3.

 

Michigan Instruments operates under an ISO 13485:2003 Quality Management System, in addition to FDA Good Manufacturing Practices (GMP) / Quality Systems (QS) Regulation (CFR 820) which requires continuous control over all activities that affect the quality of our products and services.  Records and documentation are maintained that provide complete device specifications and production history that demonstrate the achievement of product quality.  Our comprehensive quality program emphasizes preventing occurrences of deficiencies and is capable of responding to any problem with appropriate corrective action.

 

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