Burn patients' pain experiences and perceptions

INTRODUCTION

Burns are painful injuries associated with a long recovery. Patients may not be receiving sufficient pain management education to optimize their experience and recovery after burn injury. Therefore, we aimed to obtain patients' perspectives about the effectiveness of current burn pain education to inform future efforts.

METHODS

We used a mixed-methods research design that included both inpatients and outpatients cared for at a single, American Burn Association-verified burn center. Participants were at least 14 years of age with an acute burn who received a minimum of two wound interventions. The interview was designed by clinician stakeholders using a modified Delphi technique and focused on patient respondent's pain experience, understanding and desire to gain knowledge concerning burn pain and its management. Descriptive quantitative analysis was performed on categorical data. Recorded interview segments were transcribed for content analysis.

RESULTS

Twenty-one adult burn patients were interviewed. Participants reported experiencing variable levels of pain and pain management effectiveness. Inpatients reported more severe pain than outpatients. Only 11% of inpatients reported having received enough pain information, compared to 50% of outpatients. Content analysis yielded 3 themes: patient's pain experience, range of expectations, and clinical information/services desired. Mental and physical effects were key factors in respondents' pain experiences, with many participants reporting mental anguish in addition to pain. Of participants who had pain expectations, most were matched by their experience (56%), although many individuals (44%) described higher pain levels than they anticipated. Positive experiences with the burn care team primarily revolved around receiving pain education from a provider, whereas negative experiences focused on wound care events. Participants desired more information on sleep and pain medications, alternative treatments, weaning and addiction risk, realistic expectations of recovery timelines, and available mental health services. Written (pamphlet) education ranked as the most desirable delivery method, followed by in-person and video education.

CONCLUSIONS

Burn patients reported variable pain experiences and a strong desire to receive additional pain education. This project informs key strategies to educate burn patients on pain: leverage the high-level of interest in pain to foster education, describe pharmacologic and alternative therapies, offer weaning plans and explanation of addiction risks.

APPLICABILITY TO PRACTICE

Burn patients' perspectives help inform strategies and content creation for pain-related education materials that burn centers can provide to improve patients' experiences.

EXTERNAL FUNDING

Project was supported in part by the NIH grant for Insight Student Research Program at the Harborview Injury Prevention and Research Center (R25 HD094336).

Glial cell line-derived neurotrophic factor induces histologic and functional protection of rod photoreceptors in the rd/rd mouse

PURPOSE

To evaluate the neuroprotective potential of glial cell line-derived neurotrophic factor (GDNF) in the retinal degeneration (rd/rd) mouse model of human retinitis pigmentosa.

METHODS

Subretinal injections of GDNF were made into rd/rd mice at 13 and 17 days of age and electroretinograms (ERGs) recorded at 22 days. Control mice received saline vehicle injections or underwent no procedure. At 23 days of age, retinas from treated and control mice were fixed and processed for wholemount immunohistochemistry using an anti-rod opsin antibody, and rod numbers were estimated using an unbiased stereological systematic random approach. Subsequent to counting, immunolabeled retinas were re-embedded and sectioned in a transverse plane and the numbers of rods recalculated.

RESULTS

Although ERGs could not be recorded from sham-operation or nonsurgical rd/rd mice at 22 days of age, detectable responses (both a- and b-waves) were observed in 4 of 10 GDNF-treated mice. Stereological assessment of immunolabeled rods at 23 days showed that control rd/rd retinas contained 41,880+/-3,890 (mean +/- SEM; n = 6), phosphate-buffered saline (PBS)-injected retinas contained 61,165+/-4,932 (n = 10; P < 0.001 versus control retinas) and GDNF-injected retinas contained 89,232+/-8,033 (n = 10; P < 0.001 versus control retinas, P < 0.002 versus PBS). This increase in rod numbers after GDNF treatment was confirmed by cell counts obtained from frozen sections.

CONCLUSIONS

GDNF exerts both histologic and functional neuroprotective effects on rod photoreceptors in the rd/rd mouse. Thus rescue was demonstrated in an animal model of inherited retinal degeneration in which the gene defect was located within the rods themselves, similar to most forms of human retinitis pigmentosa. GDNF represents a candidate neurotrophic factor for palliating some forms of hereditary human blindness.

Clinical and manometric results of laparoscopic partial (Toupet) and complete (Rosetti-Nissen) fundoplication

It is unclear whether a partial or complete gastric fundoplication done laparoscopically will offer the best control of reflux with the fewest side effects. Prospective evaluation of laparoscopic Rosetti-Nissen (360) and Toupet (180) fundoplication was performed with assessment of clinical and manometric data.

METHODS

Patients with severe gastroesophageal reflux referred for surgical correction underwent preoperative motility and upper endoscopy. A Rosetti-Nissen or Toupet fundoplication was then performed laparoscopically. Short gastrics were not divided. No bougie was used in the Toupet, which was sutured intracorporeally. A 2-cm, loose, floppy wrap about a 50-Fr bougie was performed in the Nissen. Eleven patients underwent Rosetti-Nissen and 11 Toupet fundoplication. Mean ages, duration symptoms, weight, and baseline LES, were not different. Preop esophagitis grades were similar, as were Visick Scores and presence of dysphagia.

RESULTS

Visick scores at 6 months were better in the Toupet group than the Rosetti-Nissen (P = 0.07). Persistent Dysphagia in four, Gas-Bloat in two, and Odynophagia in one within the Rosetti-Nissen group accounted for the difference, and were not seen in Toupets. LES pressures differed significantly pre and postop (P < 0.001). The change in LES pressure was significantly different between Toupet and Rosetti-Nissen (chart). Seven patients had postop 24-h pH tests; all had no reflux. Three Rosettis have required revision to Toupet, with resolution of their symptoms.

CONCLUSIONS

In patients with severe GERD, laparoscopic Toupet and Rosetti-Nissen control symptoms and esophageal pH similarly. LES pressures are higher postop in the Rosetti-Nissen. Dysphagia and gas-bloat are more prevalent in the Nissen group. Laparoscopic Toupet fundoplication may be superior to Rosetti-Nissen in reducing the frequency of side effects frequently associated with antireflux surgery, yet with equal control of reflux.

Ultrasonography in obstructive jaundice

The usefulness of ultrasonography in the preliminary evaluation of obstructive jaundice is described in 35 consecutive patients with icterus. Diagnosis was substantiated by laparotomy, autopsy, or liver biopsy. In 23 patients with dilated bile ducts at ultrasonography, obstruction by tumor, stone, or stricture was proven operatively. Obstructive jaundice was differentiated from hepatocellular jaundice in 86% of cases; the site of obstruction was noted to be correct in 85%. The accuracy in the diagnosis of obstructive jaundice was 100% in patients with moderate or severe icterus.

[On the nonexistence of propionic acid in various kinds of breeds (author's transl)]

Analyses of 45 samples of sour dough and various kinds of bread have shown that no appreciable amounts of propionic acid are formed during sour dough fermentation. Bread has no natural propionic acid content.