New Michigan Instruments Thumpers Continue to Save Lives
GRAND RAPIDS, Mich. – Every 90 seconds or less, someone in the United States suffers from cardiac arrest – over 460,000 people in one year. The importance of effectiveCPR has been demonstrated, especially for those victims that do not or cannot respondto defibrillation. These patients need CPR to restore blood flow to the heart and to allowmedications to circulate properly within the body so that defibrillation has a better chance of working.
Studies have proven that manual CPR is difficult to perform properly, even by trained and experienced professionals. Improperly preformed CPR will not adequately restore the blood flow. Even experienced rescuers giving compressions at 80 times per minute will suffer fatigue quickly and cannot go for more than a minute before losing effectiveness through the loss the correct compression rate or depth. The most recent clinical evidence indicates that delays or interruptions in chest compressions were detrimental and manual CPR is best when continuously delivered at 100 compressions per minute. This prompted the AHA to release new guidelines (November 2005), which has increased the emphasis on the performance of chest compressions and placed less emphasis on ventilation.
In response to the new AHA guidelines for CPR Michigan Instruments announces the release of two new models of its mechanical CPR device, most commonly known as the Thumper®. The new models are the 1007CC that provides continuous chest compressions and the 1007CCV which provides the features of the 1007 CC and adds the capability of ventilation. The new models of the Thumper® employ high impulse chest compression technology that has been shown to significantly improve resuscitation compared to previous Thumpers and manual CPR., In the most recent study at the University of Pittsburg Medical College, the Thumper® resuscitated 10 out of 10 subjects that had been in cardiac arrest for 8 minutes, while carefully performed manual CPR, under the best conditions, could only revive 4 out of 9. Sustained use of Thumper CPR has been reported to revive patients to a conscious state; something that rarely if ever happens with manual CPR.
The Thumper® is an oxygen-powered piston device that has been an adjunct to many ambulance and fire departments for over 40 years. The Thumper® can be rapidly set up with virtually no loss of CPR in transition from manual to Thumper® CPR. Easy to operate, it has the versatility to accommodate a wide range of patients from small adults to bariatric patients over 300 lbs. With no expensive disposables, the Thumper® can be used repeatedly without replacement or repair.
The new Thumpers, Models 1007CCV and 1007CC provide AHA compliant 100 consistent compressions per minute, with a chest depression depth of 1½ to 2 inches and 50% time in compression and 50% time in relaxation for each cycle. For more information on the Thumper product line and accessories, or to find out if your ambulance or fire departments have Thumpers, contact Michigan Instruments, Inc. at 800-530-9939 or e-mail mii@michinst.com. Michigan Instruments, Inc.,founded in 1964, is a Grand Rapids, Michigan based manufacturer of mechanical CPR devices.
1 Zeeng ZJ, Croft JB, Giles WH, Mensah GA. Sudden cardiac death in the United States, 1989 to 1998. Circulation. 2001;104:2158-63.
2 Becker LB. The epidemiology of sudden death. IN: Paradis NA, Halperin HR, Nowak RM (eds.) Cardiac Arrest: The Science and Practice
of Resuscitation Medicine. Baltimore, MD: Williams & Wilkins, 1996, pp 28-47.
3 Wik L, Hansen TB, Fylling F, et. al. Delaying defibrillation to give basic cardiopulmonary resuscitation to patients with out-of-hospital ventricular
fibrillation. JAMA 1999; 281:1389-95
4 Wik L, Kramer-Johansen J, Myklebust H, Sorebo H, Svensson L, Fellow B, Stten PA. Quality of Cardiopulmonary Resuscitation During Outof-
Hospital Cardiac Arrest. 2005: JAMA Vol. 293, No.
5 Hightower D, Thomas SH, Stone CK, Dunn K, March JA. Decay in quality of closed-chest compressions over time. 1995: Annals of Emergency
Medicine, 26:300-303.
6 Eftesol T, Sunde K, Steen PA. Effects of interrupting precordial compressions on the calculated probability of defibrillation success during
out-of-hospital cardiac arrest. 2002: Circulation: 105:2270-2273.
7Swart GL, Mateer JR, DeBehnk DJ, Jameson SJ, Osborn JL. The Effect of Compression Duration on Hemodynamics during Mechanical
High-Impulse CPR. 1994: Academy of Emergency Medicine; 1:430-437.
8 Dickinson ET, Verdile VP, Schneider RM, Salluzzo FR. Effectiveness of Mechanical Versus Manual Chest Compressions in Out-of-Hospital
Cardiac Arrest Resuscitation: A Pilot Study. 1998: American Journal of Emergency Medicine. 16(3); 289-292.
9 Betz AE, Menegazzi JJ, Louge ES, Callaway CW, Wang HE. A randomized comparison of manual, mechanical, and high-impulse chest
compression in a porcine model of prolonged ventricular fibrillation. Resuscitation. 2006 Jun;69(3):495-501. Epub 2006 Mar 24

