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Query: UMLS:C0243026 (sepsis)
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Current research on the efficacy of CPR in specific patient groups may lead to the withholding of CPR in groups that statistically show minimal success. Prognosticative factors that indicate minimal-at-best success with CPR include age greater than 70, dysrhythmias such as asystole and electromechanical dissociation, sepsis, metastatic cancer, GI hemorrhage, and acute stroke. Although physicians are under no legal or ethical obligation to provide futile treatments, how one defines a treatment as "futile" is unclear. As a patient advocate, the nurse acts to ensure the autonomous patient is fully informed, freely consenting, and actively directing his/her own health care. End-of-life decisions regarding health care must be based on the patient's goals, which will be revealed through the moral discourse among health care professionals, patients, and their loved ones.
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PMID:Limiting care: is CPR for everyone? 235 36

Outcome of cardiac arrest (CA) is very much influenced by pre-CPR conditions. To assess the importance of these pre-CPR factors, an analysis of the Belgian CPCR registry was made according to some pre-CPR conditions. In this registry, several variables related to pre-arrest, arrest, CPR and post CPR period have been recorded in 4548 patients. The pre-CPR conditions studied were: age, witnessed event or not, pre-arrest health state, underlying disease, site of cardiac arrest, type of respiratory arrest and type of cardiac arrest. Age did not influence outcome significantly. The importance of witnessing is very significant. Severe pre-arrest disability reduces chances on long-term survival (LTS) to half and overall health status longterm survivors is clearly less. Intoxication and metabolic origin of CA have good prognosis (LTS, 21%). Trauma/exsanguination, drowning, SIDS and sepsis have bad prognosis (LTS, 1-3%). Cardiac (LTS, 12%) and respiratory (LTS, 14%) origin have similar outcome, although significant difference exists in occurrence of cerebral failure, suggesting that post-ischemic encephalopathy is more severe in respiratory than in cardiac origin. The most frequent site of CA, the home of the patient, has poor outcome results (LTS, 5%). Gasping is significantly related to successful outcome. In the out-of-hospital setting the type of CA was 25% VF (LTS, 77%), 65% asystole (LTS, 4%) and 10% EMD (LTS, 3%). Outcome of the subgroup out-of-hospital, witnessed, VF is comparable to other reports. This sub-group seems to us the most appropriate for clinical trials.
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PMID:Pre-CPR conditions and the final outcome of CPR. The Cerebral Resuscitation Study Group. 255 Oct 6

We conducted a prospective study of CPR in our hospital in order to learn more of the factors influencing outcome. In a 7-month period, 71 patients underwent CPR. Twenty-nine (41%) were successfully resuscitated; of these, 13 (18% of the total group) survived to be discharged from the hospital. Factors associated with a successful outcome included occurrence of cardiopulmonary arrest within 24 h of hospitalization, short duration of CPR, and the absence of cardiogenic shock, sepsis, acute renal failure, cancer, and pneumonia. Factors which did not influence outcome included the patients' age, sex, location in hospital during the arrest (general ward vs. intensive cardiac care unit), time of day of the arrest, or the participation of senior physicians or anesthesiologists in the resuscitation.
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PMID:Predicting outcome of inhospital cardiopulmonary resuscitation. 337 Oct 21

This retrospective review of 83 infants undergoing CPR in the neonatal ICU of a teaching hospital found that 12 (14%) patients were discharged from the hospital and seven (8%) were alive at least 1 yr after discharge. Of these seven, five appeared neurologically intact. From another perspective, 41% (12/29) of the patients who survived at least 24 h after CPR were discharged alive. Factors significantly (p less than .05) associated with poor outcome included sepsis, oliguria 24 h before and/or after arrest, prematurity, and intraventricular hemorrhage. Variables significantly (p less than .05) related to good outcome were the need for intubation during resuscitation and the diagnosis of major congenital anomalies. Intraventricular hemorrhage was the single most powerful variable in the regression analysis. Outcome statistics from this study were strikingly similar to currently available adult data.
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PMID:Outcome of cardiopulmonary resuscitation in the neonatal intensive care unit. 374 95

There is a type of cerebral lesion, which kills neuronal cells at a later stage (greater than 48 hrs) post CA, while the systemic circulation is functioning normally. Although this lesion is probably dependent on multiple factors (----multiple therapies), a keyfactor in the pathogenesis is the loss of autoregulation and "finetuning" of the cerebral bloodflow according to local tissue metabolic needs. Although beneficial effect of almost none of the following therapies has been documented in randomised clinical studies, the following suggestions are made: a) In the CA-CPR phase: efficient respiratory care and external cardiac compressions (ECC), especially during bicarbonate administration; consider open chest CPR early, especially in cases of long arrest time and ineffective ECC. The socalled new CPR does not improve neurological outcome. b) In the post CPR phase: The non-autoregulated brain (cfr. focal ischemia) is kept preferentially at pCO2 values 25-30 mmHg, pO2 values greater than 100 mmHg, and normotension. Some form of stress, seizure and hyperthermia control prevents further imbalance metabolism/bloodflow. Relative dehydration, oncotic balance, steroids, early control of sepsis and uremia, early CT scan and measurement/control of ICP. All the above is currently grouped under "standard neuro-intensive therapy". Some other therapies, presently suggested by animal research are not very obvious, need first randomised clinical studies and are not suggested at this stage for clinical use: barbiturate coma, diphantoine, streptokinase, multifaceted therapy including hemodilution-brainflushing, Ca++ influx blocking drugs (lidoflazine). One such "innovative" therapy, barbiturate coma, has already been proven to be relatively ineffective (BRCT I) (Acta anaesth. belg., 1984, 25, suppl., 219-226).
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PMID:Brain protection in the immediate post-resuscitation phase. 651 33

Many of our patients in ICUs suffer from shock, be it due to sepsis, trauma, arrest, or other causes. These patients continue to have a very high mortality rate in spite of very labor intensive and expensive treatment. The ability to identify patients who are likely to succumb to their illness is of utmost importance. Of the multitude of scoring systems published, the APACHE seems to accurately stratify shock patients according to severity of illness. However, these systems tend to be more useful for stratifying risk groups of patients than assessing the risk of death. Hemodynamic data can specifically assess the severity of the shock state in an individual patient. Those who maintain a relatively low cardiac index (< 4.5 L/m/M2) and oxygen delivery (< 15 mL/m/kg or 600 mL/m/M2) have persistent tissue hypoperfusion. Arterial lactate concentrations reflect the severity of this perfusion defect and correlate with outcome. Therefore, by restoring tissue perfusion, we can clearly improve mortality. CPP, although not generally obtainable during cardiac arrest, is the major physiologic determinant of outcome from CPR. ETCO2 monitoring during cardiac arrest in humans correlates with resuscitability, however, provides a rapid noninvasive monitor of cardiac output, and therefore has secured its role as an invaluable tool for assessing the effectiveness of CPR. An ETCO2 over 10 mm Hg is associated with effective CPR. A rapid rise in ETCO2 during CPR heralds recovery of spontaneous circulation. In conclusion, the use of prognostic indicators as predictors of outcome is supported as an important adjunct to the management of critically ill patients. These indicators serve as useful monitors to evaluate treatment and guide clinical management. Understanding the underlying pathophysiologic mechanisms responsible for the wide variety of illnesses associated with circulatory failure is crucial in our concerted effort to reduce mortality in these patients. As knowledge is gained, we hopefully will be able to develop more accurate and specific predictors of outcome to prudently select patients most likely to benefit.
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PMID:Predictors of outcome from critical illness. Shock and cardiopulmonary resuscitation. 811 27

Almost half of patients respond acutely to resuscitation but most die within the first several days after arrest. The incidence of survival to discharge from the hospital after cardiopulmonary arrest is about 15%; one third of those surviving have evidence of neurologic deficits. Although some prognostic variables are useful in determining which patients are most likely to die prior to discharge from the hospital, each patient needs to be evaluated on an individual basis and the various risk factors weighed carefully. As additional data accumulate, we may well be more effective at deciding which patients are more likely to benefit from CPR so that we can more judiciously apply this therapeutic modality. A number of studies have identified factors that contribute to poor outcome. Patients over 70 years of age usually fare poorly after CPR, but this is more a reflection of the number of coexisting diagnoses rather than years. Although initial survival may not be different from younger patients, fewer elderly patients live to discharge and more are likely to have neurologic sequelae. Concurrent diagnoses such as sepsis, AIDS, gastrointestinal bleeding, renal failure, cancer, and central nervous system disease have a universally poor response to CPR. If defibrillation occurs more than 6 minutes after arrest or on the general ward or if the resuscitative attempt lasts longer than 15 minutes, mortality is greater than 95%. If CPR continues for more than 30 minutes, there are no survivors. A low exhaled CO2 concentration (< 2%) during cardiac massage, asystole or EMD as the first identified rhythm, and recurrent arrest also carry a poor prognosis. On the other hand, at the time of arrest or during the immediate postarrest period, poor neurologic status is a less helpful predictor. The absence of spontaneous respiration is the only variable at the time of admission after out-of-hospital arrest that is particularly ominous. There is no evidence to suggest that the absence of spontaneous respiration implies any better prognosis for patients arresting in the hospital. Coma, hypoxic myoclonus, and absent reflexes, while not useful immediately following arrest, are of greater prognostic significance 48 hours later. Only 5% of patients who are unconscious 48 hours after arrest will have a full neurologic recovery. The Glasgow Coma Scale has also been used for prognostication.(ABSTRACT TRUNCATED AT 400 WORDS)
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PMID:Resuscitation: when is enough, enough? 1014 87

Carboxypeptidase R (EC 3.4.17.20; CPR) and carboxypeptidase N (EC 3. 4.17.3; CPN) cleave carboxyl-terminal arginine and lysine residues from biologically active peptides such as kinins and anaphylatoxins, resulting in regulation of their biological activity. Human proCPR, also known as thrombin-activatable fibrinolysis inhibitor, plasma pro-carboxypeptidase B, and pro-carboxypeptidase U, is a plasma zymogen activated during coagulation. CPN, however, previously termed kininase I and anaphylatoxin inactivator, is present in a stable active form in plasma. We report here the isolation of mouse proCPR and CPN cDNA clones that can induce their respective enzymatic activities in culture supernatants of transiently transfected cells. Potato carboxypeptidase inhibitor can inhibit carboxypeptidase activity in culture medium of mouse proCPR-transfected cells. The expression of proCPR mRNA in murine liver is greatly enhanced following LPS injection, whereas CPN mRNA expression remains unaffected. Furthermore, the CPR activity in plasma increased 2-fold at 24 h after LPS treatment. Therefore, proCPR can be considered a type of acute phase protein, whereas CPN is not. An increase in CPR activity may facilitate rapid inactivation of inflammatory mediators generated at the site of Gram-negative bacterial infection and may consequently prevent septic shock. In view of the ability of proCPR to also inhibit fibrinolysis, an excess of proCPR induced by LPS may contribute to hypofibrinolysis in patients suffering from disseminated intravascular coagulation caused by sepsis.
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PMID:Pro-carboxypeptidase R is an acute phase protein in the mouse, whereas carboxypeptidase N is not. 1087 83

Profound hypothermia (core temperature of less than 28 degrees C) is a life threatening state and a medical emergency associated with a high mortality rate. The prognosis depends on underlying diseases, advanced or very early age, the duration prior to treatment, the degree of hemodynamic deterioration, and especially, the methods of treatment, including active external or internal rewarming. This is a case study of an 80-year-old female patient with severe accidental hypothermia (core temperature 27 degrees C). She was found in her home lying immobile on the cold floor after a fall. The patient was in a profound coma with cardiocirculatory collapse, and the medical staff treating her was inclined to pronounce her deceased. On her arrival at the hospital, she was resuscitated, put on a respirator and actively warmed. Very severe metabolic disorders were found, including a marked metabolic acidosis composed of diabetic ketoacidosis (she had suffered from insulin treated type 2 diabetes mellitus) and lactic acidosis with a very high anion gap (42) and a hyperosmotic state (blood glucose 1202 mg/dl). There were pathognomonic electrocardiographic abnormalities, J-wave of Osborn and prolonged repolarization. Slow atrial fibrillation with a ventricular response of 30 bpm followed by a nodal rhythm of 12 bpm and reversible cardiac arrest were recorded. The pulse and blood pressure were unobtainable. Despite the successful resuscitation and hemodynamic and cognitive improvement, rhabdomyolysis (CKP 6580 u/L), renal failure and hepatic damage developed. She was extubated and treated with intravenous fluids containing dopamine, bicarbonate, insulin and antibiotics. Her medical condition gradually improved, and she was discharged clear minded, functioning very well and independent. Renal and liver tests returned eventually to normal limits. Progressive bradycardia, hypotension and death due to ventricular fibrillation or asystole commonly occur during severe hypothermia. Respiratory and metabolic, sometimes lactic, acidosis, lethargy and coma, hypercoagulopathy, hyperosmolar state, acute pancreatitis and renal and hepatic failure are frequent complications of hypothermia. Underlying predisposing causes of hypothermia are diabetic ketoacidosis, cerebrovascular disease, mental retardation, hypothyroidism, pituitary and adrenal insufficiency, malnutrition, acute alcoholism, liver damage, hypoglycemia, sepsis, hypothalamic dysfunction, sepsis and polypharmacy, and especially, the use of sedative and narcotic drugs. Our case demonstrates once again that CPR once begun should continue until the successful rewarming because "no one is dead until warm and dead".
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PMID:[Severe accidental hypothermia in an elderly woman]. 1175 73

OBJECTIVES: To describe the characteristics of the patients not resuscitated in a university affiliated pediatric hospital. To characterize the data registered in the chart regarding the resuscitation and evaluate ethical and legal aspects of CPR (cardiopulmonary resuscitation). METHODS: Retrospective study of 176 deaths that occurred in a one year time period. The chart was reviewed and compared to information received directly from the physician that participated in the patientacute;s resuscitation. Ethical and legal aspects involved in resuscitation efforts were discussed. RESULTS: During the study period 176 deaths occurred. 47 (26.7%) patients did not receive CPR as reported directly by the physician in charge of the patient when the dead occurred. Two patients were excluded, because the chart could not be found. Prior to their death, 64.4% (29/45) received mechanical ventilatory support and 48.5% (33/45) received inotropic support. 60% (27/45) of the deaths occurred in the intensive care unit. The most common diagnoses at admission were sepsis in 28% (13/45) and pneumonia with respiratory failure in 27% (12/45). The most common underlying medical conditions were malignancies in 28.8% (13/45). Of these 45 patients, the medical record about CPR was available in 40 charts. It was documented that 11/40 (27.5%) were declared dead without resuscitation efforts and in 29/40 (72.5%) the medical record stated that CPR was performed without improvement in vital signs. CONCLUSION: There was a discrepancy between the actual cardiopulmonary resuscitation efforts and the documentation of cardiopulmonary resuscitation in the medical record. This behavior may be due to fear of possible legal consequences of not performing cardiopulmonary resuscitation. However, in patients with very poor prognosis it may be ethically justified to withhold CPR.
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PMID:[Cardiopulmonary resuscitation: discrepancy between the actual cardiopulmonary resuscitation and the documentation in the medical record] 1464 30


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