Article

Intravascular temperature control system to maintain normothermia in organ donors.

Davee Department of Neurology and Clinical Neurological Sciences, Northwestern Memorial Hospital, Northwestern University, Feinberg School of Medicine, 710 N. Lake Shore Dr. Abbott Hall, Room 1123, Chicago, IL, 60611, USA.
Neurocritical Care (Impact Factor: 2.6). 02/2008; 8(1):31-5. DOI: 10.1007/s12028-007-9008-0
Source: PubMed

ABSTRACT Temperature regulation in humans is controlled by the hypothalamus. After death by neurological criteria, the hypothalamus ceases to function and poikilothermia ensues. Preservation of normothermia in those patients destined to become organ donors is an important part of maintaining the normal physiology of the organs and organ systems. Typical means of achieving normothermia include increasing the temperature of the ambient air, infrared warming lights, instillation of warmed intravenous fluids, and warm air or water blankets.
In this prospective case series of five organ donors, we used an intravascular temperature modulation catheter (Alsius, Irvine, CA) to maintain normothermia in organ donors declared dead by neurological criteria. Data on accuracy of temperature maintenance at 37 degrees C and nursing ease of use were collected.
This intravascular temperature modulation catheter provided an accurate method of temperature regulation in brain death donor and easier to use from a nursing workload perspective.
Intravascular warming is a viable method for the maintenance of normothermia in organ donors. The experience here provides some insight into the ability of these devices to warm patients in other clinical situations.

0 Followers
 · 
200 Views
  • [Show abstract] [Hide abstract]
    ABSTRACT: Maintaining burn patients' body temperature during surgery is a significant challenge. Although increasing the ambient operating room (OR) temperature and other passive rewarming methods help, such measures have limited effectiveness and prove taxing on OR personnel. Initial studies indicate that an intravascular warming catheter may improve and sustain burn patient body temperatures. The authors hypothesize that the warming catheter is similarly effective at maintaining normothermia despite a lower OR temperature than in a cohort of matched control burn patients. This is a retrospective case-control study involving patients with major burns treated between January 2006 and June 2011. Cases received an intravascular warming catheter, whereas controls receive traditional temperature conserving interventions. As the catheters maintained body temperature, the room temperature was gradually lowered to normal. Twenty-three patients were involved in 31 cases using the catheter, compared with 39 controls in 62 surgeries. The mean temperature deviation for each catheter group was -0.76 ± 1°C and -0.80 ± 0.9°C for the control group. Given 20-minute intervals throughout the operations, the mean patient temperature for cases and controls never deviated by more than 1°C. OR staff satisfaction has improved with decreased room temperatures. An intravenous warming catheter reliably maintained patient core body temperature during surgery. To date, this is the largest cohort study of such a catheter among burn patients. This system may be more effective than current warming techniques, with the potential to decrease the total number of procedures and the time to complete wound closure.
    Journal of burn care & research: official publication of the American Burn Association 01/2013; 34(1):191-5. DOI:10.1097/BCR.0b013e31826c32a2 · 1.55 Impact Factor
  • Der Unfallchirurg 12/2009; 112(12):1062-1065. DOI:10.1007/s00113-009-1719-6 · 0.61 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The understanding of keyhole behavior is always a topic of great importance where many questions are still of concern. We have analyzed the keyhole dynamics in the case of a very simple configuration where we have used full penetration laser welding conditions. We will present the results of the study of these welding configurations, where experimentally a 4 kW Nd:YAG laser has been used, characterized with a 0.4 mm spot diameter and a "top-hat" intensity distribution