Acute hypopituitarism in a pregnant patient after cardiac gunshot injury

Sheehan's syndrome is a well described entity that refers to hypopituitarism with pituitary infarction secondary to postpartum shock or hemorrhage. Antepartum pituitary infarction is a very rare condition that has been reported only in patients with longstanding type 1 diabetes mellitus or uncontrolled gestational diabetes. A case of severe, acute hypopituitarism in the setting of hemorrhagic shock from a gunshot wound is presented. Our case report highlights the importance of including hypopituitarism in the differential diagnosis of a critically ill parturient.

Successful management of a morbidly obese patient for electroconvulsive therapy with elective tracheostomy

Electroconvulsive therapy (ECT) is a treatment for affective catatonia and requires multiple general anesthetics. Morbid obesity is an increasingly prevalent condition that may complicate the standard anesthetic management of a patient undergoing ECT. We report the successful airway management of a morbidly obese ECT patient via elective tracheostomy.

Introduction of guidelines to facilitate enteral nutrition in a surgical intensive care unit is associated with earlier enteral feeding

PURPOSE

Patients treated postoperatively in surgical intensive care units often receive delayed enteral nutrition. We hypothesized that the introduction of guidelines promoting early enteral nutrition is associated with earlier enteral feeding.

METHODS

Enteral nutrition guidelines were created by the consensus of a multidisciplinary team consisting of intensivists, nurses, nutritionists, and surgeons. The guidelines were implemented through repeated staff education. We prospectively compared data on nutritional support in the surgical intensive care unit of a tertiary care center before (pre-intervention period, from January 27 to April 30, 2008) and after (post-intervention period, from May 1st to August 15th, 2008) implementation of the guidelines. The primary outcome was time to enteral feeding (oral or tube feeding).

RESULTS

146 patients were evaluated during the pre-period and 141 patients during the post-period. Patients during the two time periods had similar demographics and clinical characteristics. None of the patients were without nutrition for longer than 7 days. Oral or feeding tube nutrition was started earlier in the post-period (median 1 vs. 2 days, p < 0.001). There was no difference in the percentages of patients receiving parenteral nutrition (7.4 vs. 10%, p = 0.360). There was no increase in aspiration events in the post-period (8 vs. 9.4%, p = 0.606).

CONCLUSIONS

Introduction of guidelines to facilitate enteral nutrition in a surgical intensive care unit was associated with earlier enteral feeding.

Brief review: anesthetic neurotoxicity in the elderly, cognitive dysfunction and Alzheimer's disease

PURPOSE

Postoperative cognitive decline in the elderly has emerged as a major health concern. In addition, there is a growing interest in the potential relationship between general anesthetic exposure and the onset and progression of Alzheimer's disease (AD). The available evidence of a possible association between anesthesia, surgery, and long-term cognitive effects, including AD, deserves consideration. In this review, we summarize the evidence for anesthesia-induced neurotoxicity in the elderly, while highlighting the limitations of existing data, and we put the literature into perspective for the clinician.

PRINCIPAL FINDINGS

A growing body of evidence suggests that general anesthetics may be neurotoxic to both young and aging brains. Much of the evidence originates from in vitro and in vivo studies with cells, rodents, and nonhuman primates. Despite the animal data suggesting a relationship between anesthesia and neurotoxicity in the elderly, a definitive link remains elusive in humans.

CONCLUSIONS

The possible relation between anesthetic neurotoxicity, postoperative cognitive dysfunction, and AD remains elusive. It remains unclear whether postoperative cognitive decline in the elderly is related more to perioperative stress and related medical co-morbidities.

Emergency airway management

Emergency airway management is associated with a high complication rate. Evaluating the patient prior to airway management is important to identify patients with increased risk of failed airways. Pre-oxygenation of critically ill patients is less effective in comparison to less sick patients. Induction agents are often required, but most induction agents are associated with hypotension during emergency intubation. Use of muscle relaxants is controversial for emergency intubation, but they are commonly used in the emergency department. Supervision of emergency airway management by attending physicians significantly decreases complications. Standardized algorithms may increase the success of emergency intubation. Attention should be paid to cardiopulmonary stability in the immediate post-intubation period.

Improvement in emergency airway equipment transport

BACKGROUND

Airway management out of the operating room in many major institutions is often performed by teams, requiring airway providers to carry their own materials at all times. The bag containing airway equipment must be light enough to be carried easily, while containing sufficient equipment to manage airways in various settings. Additionally, transport of the bag throughout the hospital raises concern about transmission of infection. We hypothesized that a new system of multiple, smaller bags would decrease weight, facilitate prompt location of equipment, and reduce the risk of bags acting as fomites.

METHODS

The service purchased small, nylon laryngoscope bags with dividers to keep equipment organized. The contents of the original bag and a new replacement bag were cataloged and both bags were weighed. Fourteen clinicians working on emergency airway consults at the time of the study were timed as they searched the bags for predetermined equipment with 2 scenarios and intubated a mannequin. The surfaces of the bags were swabbed for culture.

RESULTS

Clinicians were significantly faster to locate equipment with the new compared to the original bag, with a difference of 39 s (P < .001, 95% CI 19-58 s) in the first scenario, and 22 s (P < .001, 95% CI 13-32 s) in the second. The cultures from the original bag demonstrated coagulase-negative Staphylococcus, enterococcus, Bacillus species, alpha-hemolytic Streptococcus, non-hemolytic Streptococcus, and a Staphylococcus species of a second type. The culture of the new bag after clinical use but before cleaning grew rare Aspergillosis species. The culture of the new bag after undergoing proper cleaning demonstrated no growth.

CONCLUSIONS

Exchanging a large canvas bag for several smaller nylon bags has improved the transport of emergency airway equipment, with benefits in carrying the bag, locating equipment, and reducing the transport of pathogens throughout the hospital.

Postoperative residual curarization from intermediate-acting neuromuscular blocking agents delays recovery room discharge

BACKGROUND

Postoperative residual curarization (PORC) [train-of-four ratio (T4/T1) <0.9] is associated with increased morbidity and may delay postoperative recovery room (PACU) discharge. We tested the hypothesis that postoperative T4/T1 <0.9 increases PACU length of stay.

METHODS

At admission to the PACU, neuromuscular transmission was assessed by acceleromyography (stimulation current: 30 mA) in 246 consecutive patients. The potential consequences of PORC-induced increases in PACU length of stay on PACU throughput were estimated by application of a validated queuing model taking into account the rate of PACU admissions and mean length of stay in the joint system of the PACU plus patients recovering in operation theatre waiting for PACU beds.

RESULTS

PACU length of stay was significantly longer in patients with T4/T1 <0.9 (323 min), compared with patients with adequate recovery of neuromuscular transmission (243 min). Age (P=0.021) and diagnosis of T4/T1 <0.9 (P=0.027), but not the type of neuromuscular blocking agent, were independently associated with PACU length of stay. The incidence of T4/T1 <0.9 was higher in patients receiving vecuronium. Delayed discharge significantly increases the chances of patients having to wait to enter the PACU. The presence of PORC is estimated to be associated with significant delays in recovery room admission.

CONCLUSIONS

PORC is associated with a delayed PACU discharge. The magnitude of the effect is clinically significant. In our system, PORC increases the chances of patients having to wait to enter the PACU.

Temporal trends in the epidemiology of severe postoperative sepsis after elective surgery: a large, nationwide sample

INTRODUCTION

Multiple studies have used administrative datasets to examine the epidemiology of sepsis in general, but the entity of postoperative sepsis has been studied less intensively. Therefore, we undertook an analysis of the epidemiology of postoperative sepsis using the Nationwide Inpatient Sample, the largest in-patient dataset available in the United States.

METHODS

Elective admissions of patients aged 18 yr or older with a length of stay more than 3 days for any 1 of the 20 most common elective operative procedures were extracted from the dataset for the years 1997-2006. Postoperative sepsis was defined using the appropriate International Classification of Diseases, Ninth Revision, Clinical Modification codes; severe sepsis was defined as sepsis along with organ dysfunction. Logistic regression was used to assess the significance of temporal trends after adjusting for relevant demographic characteristics, operative procedure, and comorbid conditions.

RESULTS

We identified 2,039,776 admissions for analysis. The rate of severe sepsis increased from 0.3% in 1997 to 0.9% in 2006. This trend persisted after adjusting for relevant covariables-the adjusted odds ratio of severe sepsis per year increase in the study period was 1.12 (95% CI, 1.11-1.13; P < 0.001). The in-hospital mortality rate for patients with severe postoperative sepsis declined from 44.4% in 1997 to 34.0% in 2006; this trend also persisted after adjustment for relevant covariables-the adjusted odds ratio per year was 0.94 (95% CI, 0.93-0.95; P < 0.001).

CONCLUSION

During the 10-yr period that we studied, there was a marked increase in the rate of severe postoperative sepsis but a concomitant decrease in the in-hospital mortality rate in severe sepsis.

Effects of supervision by attending anesthesiologists on complications of emergency tracheal intubation

BACKGROUND

Emergent intubation is associated with a high complication rate. These intubations are often performed by resident physicians in teaching hospitals. The authors evaluated whether supervision by an anesthesia-trained intensivist decreases complications of emergent intubations.

METHODS

The authors performed a prospective cohort study in an Academic Tertiary Care Hospital. They enrolled 322 consecutive patients who required emergent intubation between November 1, 2006, and April 15, 2008. Emergency intubations are performed by anesthesia residents during their surgical intensive care unit rotation. An attending anesthesiologist was assigned to supervise these intubations at predetermined periods. A respiratory therapist assisted with airway management and ventilation. Information related to the intubation, detailing patient demographics, indication for intubation, attending anesthesiologist presence, medications used, and immediate complications, was recorded. Disposition and duration of mechanical ventilation were also recorded.

RESULTS

There were no differences in demographics, clinical characteristics, or illness severity among patients intubated with and without attending supervision. Attending physician supervision was associated with a significant decrease in complications (6.1% vs. 21.7%; P = 0.0001). There was no difference in ventilator-free days or 30-day mortality.

CONCLUSION

Supervision by an attending anesthesiologist was associated with a decreased incidence of complications during emergent intubations.

Perioperative spinal cord infarction in nonaortic surgery: report of three cases and review of the literature

Paraplegia caused by a spinal cord infarction (SCI) is a devastating perioperative complication, most often associated with aortic and spine surgery. We present two other clinical scenarios in which perioperative SCI may occur. They happened during surgical procedures performed with epidural anesthesia, in the presence of several specific risk factors such as spinal stenosis, vascular disease, intraoperative hypotension, or the use of epinephrine in the local anesthetic solution. Second, SCI may occur during episodes of postoperative hypotension in patients with a history of aortic aneurysms.