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Dan Poenaru

Publications and source records attributed to Dan Poenaru.

8 recordsLinked to original sources

Why are women deterred from general surgery training?

BACKGROUND: This study explored the factors contributing to the low application rates to general surgery (GS) residency by female students and compared perceptions of GS between students and female surgeons. METHODS: We distributed surveys to final-year students at 4 medical schools and nationwide to every female general surgeon in Canada. RESULTS: Of students who were deterred from GS, women were less likely than men to meet a same-sex GS role model and more likely to experience gender-based discrimination during their GS rotation (P < .05). Female students had the perception that GS was incompatible with a rewarding family life, happy marriage, or having children, whereas female surgeons were far more positive about their career choice. CONCLUSIONS: Both real and perceived barriers may deter women from a career in GS. Real barriers include sex-based discrimination and a lack of female role models in GS. There are also clear differences in perception between students and surgeons regarding family and lifestyle in GS that must be addressed.

Career Choice↗

Minimum postoperative antibiotic duration in advanced appendicitis in children: a review.

The suitable duration of antibiotic use following appendectomy for advanced appendicitis in children is still debated. A systematic review was performed, including published experimental and observational data of antibiotic use in children who had undergone appendectomy for advanced appendicitis. Data were extracted and analyzed according to predefined criteria. Twenty-eight studies were selected that included 2,284 patients. There was no consistency among the protocols regarding length of antibiotic use, discharge criteria, or use of home antibiotics following discharge. Limiting duration of antibiotic use to 3 days did not appear to be associated with higher rates of intraabdominal abscess or wound infection. In the absence of higher-level evidence, shortening of antibiotic regimens following surgery for pediatric complicated appendicitis appears to be safe.

Anti-Bacterial Agents↗

Duodenal perforation associated with breath stacking and annular pancreas.

Gastrointestinal perforations have been reported occasionally in neonates. The authors describe a 9-month-old girl with mosaic trisomy 8 on home breath-stacking therapy who presented with an acute abdomen. A large perforation in the first portion of the duodenum was found as well as an incidental annular pancreas. Despite occupying approximately half of the circumference of the lumen, the perforation was able to be closed primarily without complications. Several etiologies have been suggested for intestinal perforations. This report hypothesizes the possible involvement of breath stacking in conjunction with partial obstruction by an annular pancreas.

Chromosomes, Human, Pair 8↗

Tensions influencing operating room team function: does institutional context make a difference?

BACKGROUND: A recent study of operating room (OR) team communication in a large, urban hospital described recurrent tension catalysts and a preliminary theory of team members' interpretive processes. To determine to what extent these findings were transferable to other institutional contexts, we conducted a validation study in 2 small, academic hospitals in a mid-size city. METHODS: Eight focus groups and 8 interviews were conducted with 6 general surgeons, 22 OR nurses, 5 anaesthesiologists and 10 trainees. Observations of 10 surgeons and their team members were conducted over 4 months. Data were analysed by applying thematic codes derived from previous research and engaging a grounded theory process to reveal additional, emergent themes. RESULTS: Observed tension catalysts were consistent with those described previously. However, 'higher tension' events occurred in only 70% of procedures in the smaller institutional context, as compared with at least 1 such event in all procedures in the larger setting. Interpretive processes were similar in teams from large and small institutional contexts. Team members referenced professional roles to interpret discourse, and they displayed recurrent role disagreements. Role perception influenced the motivations individuals attributed to colleagues' discourse, which influenced interpretations and reactions. CONCLUSIONS: Overall tension levels are lower in OR teams in smaller institutions; however, tension catalysts and interpretive processes appear similar to those in larger settings. Consistency in tension catalysts and interpretive processes across contexts allows us to begin to model theoretical principles of OR team communication, enabling the development of generic communication curricula applicable in a wide variety of institutional contexts.

Canada↗

Comparison of delayed complications of central venous catheters placed surgically or radiologically in pediatric oncology patients.

PURPOSE: Pediatric central venous catheters (CVCs) traditionally have been placed surgically, guided by anatomic landmarks. Increasingly, interventional radiology services are inserting CVCs using ultrasound image guidance. This study compares the frequency of delayed complications in CVCs placed surgically or radiologically in a pediatric oncology population. METHODS: Data on CVCs placed in one academic institution over 10 years were collected and analyzed retrospectively. Main outcomes assessed were infectious complications, mechanical complications, and premature catheter removal. RESULTS: Ninety-eight CVCs-comprising 52 external tunneled catheters (ETCs) and 46 subcutaneous ports-were assessed in 67 patients. Median patient age was 6.1 years for children with external catheters and 7.8 years for those with ports. Both infectious and mechanical complications were significantly more common among surgically placed ETCs than those placed radiologically (P <.05). Complications per 1,000 catheter days and premature removal showed a trend toward greater frequency among surgical ETCs, although this did not reach statistical significance. No consistent trends were seen in complications among ports. CONCLUSIONS: Pediatric patients with CVCs, especially those with external catheters, experience frequent delayed complications. Patients with radiologically inserted ETCs may encounter fewer complications than those with surgically placed ones. This corroborates previous reports in the literature suggesting image-guided CVC placement as a preferable alternative to traditional techniques.

Catheterization, Central Venous↗

A study of career choice patterns among Canadian medical students.

BACKGROUND: The number of students pursuing general surgery (GS) has declined in Canada. The reasons for this, and program directors' (PDs) perception of it, are unclear. METHODS: A survey was distributed to medical students at Queen's University and the University of Manitoba, and to all Canadian GS program directors to explore causes for the trend and identify potential solutions. RESULTS: Students pursuing GS were more likely to feel that GS fit their lifestyle needs (P < 0.05) and to have met positive role models (P < 0.05). Hardship of the training and practice, length of training, need for prestige, income and enjoyment of procedures did not correlate with specialty choice. Half of GS PDs did not perceive a decline in the number of applicants. CONCLUSIONS: Attention to student-raised concerns regarding GS programs and increased awareness of the applicants' trends among PDs can be used to address the current decline in applications to GS.

Adult↗

The in-house education of clinical clerks in surgery and the role of housestaff.

BACKGROUND: While on surgical rotations, clinical clerks spend more time on the ward and in the emergency department than in any other location. Consequently, their in-house experience is of great importance to their education-yet the teaching processes in these settings have never been fully explored. Unlike the structured pre-clerkship years, the exact breakdown of a clerk's hospital-based education is difficult to elucidate. To effectively evaluate a clerkship curriculum, it is essential to know what clerks are being taught outside of seminars, how that teaching occurs, and by whom. This study proposes a methodology by which a surgical clerkship curriculum can be evaluated. METHODS: For the purpose of the study, surgery clerks carried written and audio logs of their informal teaching encounters during one on-call period (30 hours). These included who taught them, where, by what methods, for how long, and what prompted the teaching. A survey of similar variables was administered to all clerks who rotated through general surgery over 4 months and to all general surgery residents. RESULTS: Four clerks returned completed logs (100% response rate), and 17 clerks (85% response) and 15 residents (100% response) were surveyed. Audiotaped and written logs were similar, demonstrating good recall. Students recorded an average of 11 teaching encounters (range 3 to 20) per 30 hour period, lasting a total of 73 minutes (range 17 to 178) and each 6.7 +/- 14 minutes long. Both logs and surveys identified most teaching as unsolicited, done mostly by junior and chief residents, focused chiefly on diagnosis and using a Socratic style. Most teaching occurred in the operating room, yet its occurrence was unpredictable; in surveys the emergency room and clinic settings were perceived as more important. Staff surgeons contributed 27% of the logged encounters yet were perceived in surveys as the least contributors. Residents' and clerks' perceptions of teaching were similar except for residents overvaluing the amount of senior teaching (P = 0.04). The resident level correlated significantly with the comfort of teaching (r = 0.618, P = 0.04). Senior residents encouraged more problem-solving, whereas juniors favored minilectures. Only one resident had received formal teaching instruction. CONCLUSIONS: Informal teaching of surgery clerks is variable and occurs through multiple short encounters in many settings and by various trainees. Efforts to improve the teaching process should focus on providing formal teaching instruction early in residency, specifically geared toward short encounters in flexible settings. Both the operating room as a learning environment and staff surgeons as informal teachers must be intentionally integrated into the teaching process.

Adult↗

Neostigmine for the treatment of pediatric acute colonic pseudo-obstruction.

Acute colonic pseudo-obstruction (ie, Ogilvie's syndrome) is an uncommon but serious condition in the pediatric population. Definitive management traditionally has consisted of endoscopic decompression. Recent studies have documented the effectiveness of neostigmine as a pharmacologic alternative to mechanical decompression. To date, however, this literature has focused exclusively on the adult population. The authors present the first reported case of the successful administration of neostigmine to treat acute colonic pseudo-obstruction in a child.

Child, Preschool↗