Bradycardia Without Hypertension: Is It a Common Clinical Presentation of Ventriculoperitoneal Shunt Malfunction in Pediatric Patients?

BACKGROUND: Mechanical shunting of cerebrospinal fluid is an effective treatment for hydrocephalus. Some studies suggest that bradycardia without hypertension may also be observed in ventriculoperitoneal (VP) shunt malfunction; however, in our experience, this is not a common presenting sign. OBJECTIVE: The aim of this study was to evaluate whether bradycardia without hypertension was a common sign in patients presenting to the pediatric emergency department (ED) with a VP shunt malfunction. METHODS: A retrospective observational study, from May 2006 to April 2015, which included a random sample of children admitted to the ED with clinical features suggestive of possible VP shunt malfunction. Control patients were defined as those who arrived at our ED with suspected VP shunt malfunction that was later ruled out on further workup. RESULTS: A total of 65 patients were included in this study. A significantly greater number of patients with a confirmed shunt pathology presented with vomiting (P = 0.01) and lethargy/apathy (P = 0.01). In the control group, a significantly greater number of patients presented with fever (P = 0.004) and seizures (P = 0.02). The number of patients presenting with bradycardia was not significantly different between the shunt pathology and control groups (P > 0.05). CONCLUSIONS: Bradycardia is not a common presentation in patients with VP shunt malfunction. Bradycardia is often recognized as a significant sign; however, it is one of the last presenting signs. Educating patients about the early signs must be considered as part of the treatment for VP shunt malfunction.

Peer-Reviewed Journal Publication of Abstracts Presented at an International Emergency Medicine Scientific Meeting: Outcomes and Comparison With the Previous Meeting.

Scientific presentations at professional organization meetings have long been recognized as a method of providing up-to-date and novel information to both the medical and scientific community. After abstract presentation at a medical conference, the subsequent publication rate of full-text articles is variable, and few studies have examined this topic with respect to international emergency medicine conferences. This study's goals were to determine the publication rate of articles resulting from abstracts presented at the 12th International Conference on Emergency Medicine 2008 in San Francisco, Calif, and to compare this with data from the previous International Conference on Emergency Medicine 2006 conference in Halifax, Nova Scotia, Canada. We found a reduction in publication rate from 33.2% in 2006 to 22.8% in 2008 and that the host country furnished a greater proportion of the abstracts. It would be interesting to examine how these potential trends played out over more extended periods.

The role of physical examination in establishing the diagnosis of pneumonia.

BACKGROUND: Community-acquired pneumonia (CAP) is an important cause of acute respiratory disease in ambulatory care settings. The objective of this study was to assess the accuracy of medical history and physical examination in diagnosing CAP. METHODS: Pediatric residents prospectively completed a questionnaire documenting patients' medical history and physical examination whenever a chest radiograph was ordered on patients 1 month to 16 years of age. Chest radiographs were read by a pediatric radiologist. RESULTS: Of 525 children participating in the study, 181 (34%) demonstrated findings of pneumonia. Thirty-four (19%) had no symptoms other than fever, and 51 (28%) had normal lung auscultation. Pediatric residents had the same interpretation in 85% of cases in which radiographic CAP was diagnosed by the radiologist, and in 76% of cases in which radiographic pneumonia was excluded by the radiologist. CONCLUSIONS: Results demonstrate the significant added value of chest radiography as an ancillary test for diagnosis of pneumonia in the emergency department setting.

Unintentional oral beta agonist overdose: case report and review of the literature.

An 18-month-old male infant with oral albuterol intoxication was admitted to our pediatric emergency medicine unit with agitation, moderate hypokalemia (2.36 mEq/L), and hyperglycemia (180 mg/dL). His initial electrocardiogram showed sinus tachycardia with a low-amplitude T waves. He was admitted for observation, intravenous hydration was started with added potassium, blood glucose levels were closely monitored along with serum potassium and magnesium, and serial electrocardiography was performed. It should be stressed that as an oral bronchodilator, albuterol does not improve symptoms of asthma, and it can lead to severe complications, which can be avoided when this drug is delivered by inhalation or by a metered dose inhaler.

Use of physostigmine for hallucinogenic plant poisoning in a teenager: case report and review of the literature.

The objective of this study was to utilize a case report to review the use of physostigmine for jimsonweed intoxication. A 15-year-old girl was found at school hallucinating and incoherent. Upon presentation to the emergency department, she was found to be tachycardic and confused with dilated pupils and dry, flushed, hot skin. She was admitted to our institution. Hallucinations and symptoms resolved after the use of physostigmine. She subsequently admitted to ingesting 'moonflower seeds,' which are derived from Jimsonweed (Datura stramonium). She was discharged when she got well. Jimsonweed is known to contain high concentrations of anticholinergic substances; hence, ingestion can result in the anticholinergic toxidrome. Signs and symptoms include hallucinations, tachycardia, dilated pupils, and disorientation. In our patient, the use of the physostigmine as an antidote resulted in a favorable outcome without any complications. Ingestion of the Datura species can result in severe toxicity. Each plant varies in the concentrations of alkaloid substances. For this reason, it is very important for individuals to become educated on the toxicities and potential risks associated with recreational use of these plants. The use of physostigmine can help in both the diagnosis and management of patients intoxicated with these substances.

Pharmacologic treatment of hyperthyroidism during lactation.

QUESTION: I have a patient who has hyperthyroidism due to Graves disease. She was taking methimazole but discontinued when she found out she was pregnant. She is currently close to delivery and might require antithyroid therapy in the postpartum period. Can methimazole cross into human milk, and is breastfeeding safe for her infant? ANSWER: The exposure of infants to methimazole or propylthiouracil through breast milk is minimal and not clinically significant. Women with hyperthyroidism using methimazole or propylthiouracil should not be discouraged from breastfeeding, as the benefits of breastfeeding largely outweigh the theoretical minimal risks.

Use of hypoglycemic drugs during lactation.

QUESTION: My patient was taking glipizide (an oral sulfonylurea) for type 2 diabetes. Now she is pregnant and taking insulin instead. She is very anxious to return to her previous treatment immediately after delivery because of the pain and hurdles associated with the administration of insulin. Can sulfonylureas cross into human milk and, if so, is it safe for her to breastfeed her infant? ANSWER: The exposure of infants to second-generation sulfonylureas (eg, glipizide, glyburide) through breast milk is expected to be minimal, based on the limited data available. Women with type 2 diabetes treated with sulfonylureas should not be discouraged from breastfeeding. The benefits of breastfeeding greatly outweigh the risks of these medications, if any. The baby should, however, be monitored for signs of hypoglycemia.

Methadone exposure during lactation.

QUESTION: One of my patients is currently using methadone for maintenance of opioid dependence. She wants to breastfeed. Is breastfeeding safe for her infant? ANSWER: The exposure of infants to methadone through their mothers' breast milk is minimal. Women using methadone for treatment of opioid dependence should not be discouraged from breastfeeding. The benefits of breastfeeding largely outweigh any theoretical minimal risks.