Wednesday, 2 November 2016

NEJM Week of 20th October (# 65)

                                                                                                                                   Professor Brian Andrews NEJM Recommendations for Medical Students and Tutors
Week of 20th October 2016 (#65)
University of Notre Dame Australia (Fremantle Campus)



Occasional Editorial Comment



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Must Read Articles

MEDICINE AND SOCIETY
Closing the Mortality Gap — Mental Illness and Medical Care


People with mental illness die, on average, 13 to 30 years earlier than similar people without mental illness, mostly from medical conditions such as cancer and cardiovascular disease. One contributing factor may be that physicians allow such patients to refuse care.

This article, second in a series on Serious Mental Illness, involves the management of patients who have significant medical or surgical disease along with severe mental illness. This is a Must Read article.

I found several statements (with slight amendments) worth considering:
1.     Doctors assume that because the patient has mental illness, he/she has no quality of life. You can’t just let him/she refuse the treatment.
2.     But though coercion is rarely justifiable, the rationalization that “there’s only so much you can do” risks misrepresenting laziness as respect.
3.     It’s infinitely easier to document that the “patient refused” care than to ensure that the care is provided.
4.     We focus on “fixing the broken system,” but do we stop seeking solutions from within ourselves?
5.     Far harder is overcoming any collective belief that what mentally ill people truly need is not something we can offer.


REVIEW ARTICLE

Graves’ Disease



Graves' disease is an autoimmune disorder in which the thyroid is activated by antibodies to the thyrotropin receptor. The hyperthyroidism that develops is one of many somatic and psychiatric manifestations of the disease that can affect the quality and length of life.

This is an excellent review article particularly on the pathogenesis (Figure 2) and management (Figure 3, Table 2) of Graves’ disease.



Articles Recommended for Medical Students

CLINICAL PRACTICE
Chronic Cough


http://www.nejm.org/doi/full/10.1056/NEJMcp1414215


The evaluation of chronic cough should address the possibilities of asthma, gastroesophageal reflux disease, and postnasal drip and may require more specialized investigations. For patients with refractory chronic cough, other treatment approaches may be necessary.

 

This is an important Clinical Practice article on the approach patients with a chronic cough (persisting for greater than three weeks).  After the common causes have been excluded (lingering viral respiratory tract infection, asthma, GORD, postnasal drip), there still remains a population of patients who will need management of their symptoms. This article provides an approach to this group of patients. The Figures are informative and should be reviewed.


ORIGINAL ARTICLE
Prevalence of Pulmonary Embolism among Patients Hospitalized for Syncope


Among 560 patients hospitalized for syncope, 97 (17.3%) received a diagnosis of pulmonary embolism. In 61 patients, the most proximal location of the embolus was a main pulmonary artery or a lobar artery or the perfusion defect was larger than 25% of the total area of both lungs.

2584 patients presented to the EDs in Italy with syncope. 1867 were sent home as the cause was apparent (vasovagal syncope, volume depletion, drug-induced hypotension, situational syncope, although eight declined hospitalization). 717 patients were admitted but 157 were excluded for various reasons, leaving the 560 patients for the study.

560 patients were admitted with their first episode of syncope, irrespective of the cause. The question posed by the study was what percentage of the patients were found to have a pulmonary embolus as the cause of the syncope. Of the 560 cohort, 330 (60%) were excluded from further analysis because of low-probability for pulmonary embolism (low probability based on Wells score for PE together with a negative D-dimer). Of the remaining 230 patients (high probability), 42% were found to have a PE. Of the entire 560 patients who were admitted for syncope, the overall risk for PE was 17.3%.


CASE RECORDS OF THE MASSACHUSETTS GENERAL HOSPITAL

Case 32-2016 — A 20-Year-Old Man with Gynecomastia


A 20-year-old man reported a 3-year history of gynecomastia and a 4-year history of polyuria and polydipsia that had recently resolved. Evaluation revealed bilateral gynecomastia, minimal facial hair, small testes, and an elevated serum sodium level. Diagnostic tests were performed.

The patient presented with gynaecomastia and an elevated prolactin level.
He was subsequently diagnosed with hypopituitarism associated with diabetes insipidus (adipsic type i.e. without thirst). An intracranial germ-cell tumour resulted in damage to cells in the hypothalamus producing ADH together with the osmoreceptor cells leading to loss of thirst.

The discussion of pituitary and hypothalamic physiology and the method of determining the site of the lesions by the neuro-ophthalmologist is worth reading.

ORIGINAL ARTICLE

Romosozumab Treatment in Postmenopausal Women with Osteoporosis



Romosozumab binds sclerostin, increases bone formation, and decreases bone resorption. Postmenopausal women with osteoporosis were assigned to romosozumab or placebo for 1 year, followed by 1 year of denosumab. Romosozumab was associated with lower vertebral and clinical fracture risk.


EDITORIAL

Building Better Bones with Biologics — A New Approach to Osteoporosis?



An earlier article comparing romosozumab with alendronate and teriparatide for the treatment of postmenopausal osteoporosis (DEXA results only) was published in the Journal in 2014 (review Figure 2) (http://www.nejm.org/doi/full/10.1056/NEJMoa1305224 ).

In this issue of the Journal, patients with postmenopausal osteoporosis were treated with romosozumab (a monoclonal antibody against sclerostin which is produced by osteocytes and inhibits new bone matrix formation by osteoblasts) for 12 months followed by denosumab (a monoclonal antibody which inhibits the action of RANKL leading to decreased bone resorption) for a second 12 months.
The improvement in bone density and reduction in fracture rate in the lumbar spine were very impressive, but similar changes were not statistically significant in non-vertebral sites (Figure 3). Moreover in the 65 patients treated with romosozumab, one developed osteonecrosis of the jaw and one developed an atypical femoral fracture at 12 months, and one patient developed osteonecrosis of the jaw at 24 months following both romosozumab and denosumab.  These events have been previously associated with bisphosphonate use.
The Editorial provides an historical perspective to bisphosphonate use and a critical analysis of the study and should be read.


First Branchial Cleft Cyst



A 3-year-old boy presented to the ED with pain in the right ear and swelling in the postauricular area. When gentle pressure was applied to the postauricular area (shown in a video), keratin debris and purulence were expressed into the osteocartilaginous junction of the ear canal.

This is an interesting case on an inflammatory post-auricular swelling in a three year old boy, particularly the video.



Important Articles Related to Mechanisms of Disease and Translational Research


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Other Articles which should interest medical students


ORIGINAL ARTICLE

Guillain–Barré Syndrome Associated with Zika Virus Infection in Colombia



The Guillain–Barré syndrome has been associated with Zika virus infection. In this report from Colombia, further evidence of the association is provided, as well as further characterization of the associated neurologic syndrome.                                                                                                                                                                                                                                                                                       
EDITORIAL

Zika Getting on Your Nerves? The Association with the Guillain–Barré Syndrome




CORRESPONDENCE

Zika Virus and the Guillain–Barré Syndrome — Case Series from Seven Countries



During the past year and a half, Zika virus has been spreading rapidly throughout Latin America. In this letter, evidence for the Guillain–Barré syndrome being temporally associated with Zika virus transmission is presented.

Comparing the article, the Editorial and the Correspondence, the most information can be derived from the Correspondence which describes the chronological association between ZIKV infection and GBS in seven countries. The Editorial discusses the requirements for establishing epidemiological causality between the virus and GBS and the difficulties establishing this relationship.



New Pharmacological Therapies


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Other articles which may be of interest to certain students



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