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Biomedical subjects

W C Shoemaker

Publications and source records attributed to W C Shoemaker.

At least 361 records · Page 20Linked to original sources
PubMedDate not supplied

Experience with a multidisciplinary critical care center in a community hospital.

A multidisciplinary intensive care unit has been developed in a community hospital by planning techniques which are still not common in the hospital development environment. The resulting Acute Care Center has special attributes, especially in ongoing professional educational and consultation support, in continuous physician staffing aroung the clock, in equipment and in operational policies. The net result appears to be the provision of a higher standard of patient care, a lower mortality rate for the critically ill patient, and various cost benefits. The concepts and policies involved are being met with increasing acceptance in the local medical community.

Adolescent↗
PubMedDate not supplied

Prediction of outcome and severity of illness by analysis of the frequency distributions of cardiorespiratory variables.

Despite the wide variety of illnesses and operations, we observed a common cardiorespiratory pattern of shock that was differenf for the survivors and nonsurvivors, although no one variable was capable of predicting outcome. Differences between the patterns of survivors and nonsurvivors were defined by range criteria and by cut-points operationally obtained from the frequency distributions of cardiorespiratory variables. The values of each of the 33 variables obtained, at times remote from therapy during each successive stage in the postoperative course, were used to predict survival and death in a series of 113 patients by the range and cut-point methods. An average of 13.5% of all the available variables gave a correct prediction by the range cirteria and 35% by the cut-point method. The mean percentage of Right--Wrong classifications throughout all stages for range and cut-point methods was 80 and 85%, respectively. Using the last available stage, the outcome was correctly predicted by the range criteria in 80% and by the cut point method in 88% of the patients. The high percentage of correct predictions suggests that these methods may provide a measure of the severity of acute illness as well as early warning of impending death.

Blood Gas Analysis↗
PubMedDate not supplied

Rapid bedside computation of cardiorespiratory variables with a programmable calculator.

The value prompt assessment of hemodynamic cardiorespiratory function in critically ill medical and surgical patients is widely appreciated. We have presented a system for rapidly computing these variables on real time in the ICU, for a capital outlay of less than $250. In so doing, we hope to extend the benefits of this type of assessment to the smaller community hospital ICU and individual clinicians.

Computers↗
PubMedDate not supplied

Invasive and non-invasive physiological monitoring of blunt trauma patients in the early period after emergency admission.

Pulmonary artery catheterization is usually not available to critically injured patients before admission to the intensive care unit, where action to correct values derived from such monitoring may be too late. Methods allowing hemodynamic monitoring during the early stages after trauma need to be explored. We used non-invasive monitoring systems (bioimpedance cardiac output monitoring, pulse oximetry and transcutaneous oximetry) to evaluate early temporal hemodynamic patterns after blunt trauma, and compared these to invasive PA monitoring. We included prospectively 134 patients monitored shortly after admission to the emergency department. The non-invasive impedance cardiac output estimations under extenuating emergency conditions approximated those of the thermodilution method: r = 0.83, r2 = 0.69, P<0.001; bias and precision were -0.02+/-0.78 l/min/m2. In the intensive care unit, these values improved further to: r = 0.91, r2 = 0.83, P<0.001; bias and precision = 0.36+/-0.59 l/min/m2. Monitoring revealed episodes of hypotension, low cardiac index, arterial hemoglobin desaturation, low transcutaneous oxygen and high transcutaneous carbon dioxide tensions, and low oxygen consumption during initial resuscitation. Low flow and poor tissue perfusion were more pronounced in non-survivors by both methods. Multicomponent non-invasive monitoring systems give continuous on-line, real-time displays of physiological data that allow early recognition of circulatory dysfunction. Such systems provide information similar to that provided by the invasive thermodilution method, and are easier and safer to use.

Adult↗
PubMedDate not supplied

Algorithm for resuscitation: a systematic plan for immediate care of the injured or postoperative patient.

A systematic integrated approach to the diagnostic, monitoring and fluid volume therapy was developed for use in patients with accidental and elective surgical trauma. An algorithm (patient care protocol) is proposed for expeditious resuscitation in emergency situations using: (a) BP as the criteria for initiation of rapid fluid therapy, (b) hematocrit for the choice of blood transfusion or plasma expanders, and (c) CVP, urine output, arterial pressure and wedge pressure as criteria for slowing down or stopping the rate of volume therapy. History, physical examination, laboratory work, X-rays, monitoring and diagnostic procedures are interdigitated in a systematic fashion according to priorities of the most common life-threatening aspects of the total resuscitation problem. In chaotic emergency situations, it is impossible to plan for all possible contingencies; to try to do so results in an impossibly complex and unwiedly plan. However, we believe that almost any reasonable plan is better than no plan at all.

Blood Pressure↗