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segunda-feira, 19 de junho de 2017

Parar de fumar: Melhor parar de uma vez que diminuir aos poucos


Após decidir uma dada para parar de fumar, pacientes que param abruptamente parecem ter mais chance de sucesso do que os que diminuem até parar.


Abrupt smoking cessation compared with gradual smoking reduction
Earlier evidence from randomized trials had suggested that, after a quit date is set, abstinence rates were equivalent for patients who reduced smoking prior to the quit date or stopped smoking abruptly on the quit date. However, more recent studies suggest that among smokers who plan to quit in the near future, quit rates are higher for patients who stop abruptly. The most recent randomized trial included 697 smokers in England and found that gradual smoking cessation (decreasing by 75 percent in the two weeks prior to quitting) was associated with decreased likelihood of abstinence at four weeks when compared with abrupt smoking cessation (39 versus 49 percent) [1].
See 'Overview of smoking cessation management in adults', section on 'Setting a quit date'.
1. Lindson-Hawley N, Banting M, West R, et al. Gradual versus abrupt smoking cessation: A randomized, controlled noninferiority trial. Ann Intern Med. 2016; 164:585.





Clinical Pearls - Dematology 2017


Segue artigo com casos clínicos e pérolas clínicas em dermatologia discutidos na sessão de hoje. 





segunda-feira, 12 de junho de 2017

Corticoide para faringite aguda: pouco benefício, não prescrever de rotina


De novo sobre corticoides...
Estudo mostra benefícios modestos e lembremos dos efeitos colaterais

Dexamethasone and acute pharyngitis pain in adults
Studies of oral glucocorticoids for acute pharyngitis pain have generally found only modest benefit but have been limited by confounding factors such as concurrent antibiotic use. In an office-based randomized trial that compared a single dose of dexamethasone with placebo for adults who visited a primary care clinician for acute pharyngitis and were not given an immediate prescription for antibiotics, there was no difference in the proportion of patients who achieved full pain relief at 24 hours, and there was only a small difference in symptom relief at 48 hours (35 versus 27 percent with placebo) [2]. These results support our suggestion to not prescribe glucocorticoids routinely for acute pharyngitis and to limit their use to severely symptomatic patients.
2. Hayward GN, Hay AD, Moore MV, et al. Effect of Oral Dexamethasone Without Immediate Antibiotics vs Placebo on Acute Sore Throat in Adults: A Randomized Clinical Trial. JAMA 2017; 317:1535.




Fotos mês de Abril - Clínica Médica (tardou, mas chegou!)

Fotos do mês de Abril



F



sexta-feira, 2 de junho de 2017

Mesmo cursos breves de corticoides: 2x mais fraturas, 3x mais TVP e 5x a chance de Sepse em um mês




A prescrição de corticoides (e mesmo corticoides de depósito[!]) não tem sido incomum para alívio sintomático de quadros relativamente banais como infecções de vias aéreas sem maiores complicações e outras afecções como dores articulares leve e quadros inflamatórios diversos.




A despeito da melhora sintomática importante que trazem, critérios judiciosos para a prescrição dessas medicações devem ser tomados, pois não são isentos de riscos! Lembrem-se do Dr. Otho: "O corticoide leva o paciente para a mesa de Laennec sorrindo".

Segundo estudo do BMJ, no primeiro mês após uso de corticoides, há 2 vezes mais chances de fratura, 3 vezes mais chance de trombose venosa profunda e 5 vezes o risco de sepse. Esses eventos se manifestaram mesmo com 5-6 dias de curso e com doses de somente 20 mg equivalente de prednisona. 

Vejam mais informações e link para o artigo abaixo.



Even Short-term Oral Steroids Carry Serious Risk

The millions of Americans prescribed short-term oral corticosteroids are taking a dose of risk along with their medication, according to a cohort study of more than 1.5 million adults.

Within 30 days of initiating these drugs, even at relatively low doses, users had a nearly twofold increased risk for fracture, a threefold increased risk for venous thromboembolism, and a fivefold increased risk for sepsis.

"Greater attention to initiating prescriptions of these drugs and monitoring for adverse events may potentially improve patient safety," write Akbar K. Waljee, MD, an assistant professor of gastroenterology at the University of Michigan in Ann Arbor, and colleagues. They present their findings in an article published April 12 in the BMJ.

They found that more than one in five adults included in the Clinformatics DataMart, a large national database of commercial insurance claims, received prescriptions for short-term oral corticosteroids during the 3-year study, which ran from January 1, 2012, to December 31, 2014.

Although corticosteroids are among the most common cause for hospitalization for drug-related adverse events, and various specialties have long focused on optimizing their long-term use, the short-term risks associated with the drugs have been less carefully studied.

"Although physicians focus on the long-term consequences of steroids, they don't tend to think about potential risks from short-term use," said Dr Waljee in a university news release. "We see a clear signal of higher rates of these three serious events within 30 days of filling a prescription. We need to understand that steroids do have a real risk and that we may use them more than we really need to. This is so important because of how often these drugs are used."

Of 1,548,945 adults aged 18 to 64 years included in the database, 327,452 (21.1%) received at least one outpatient prescription for short-term oral corticosteroids (30 or fewer days). The mean age of users was 45.5 years (standard deviation [SD], 11.6 years) compared with 44.1 years (SD, 12.2 years) for nonusers (P < .001). The median duration of use was 6 days (interquartile range, 6 - 12 days).

The six most common indications for the drugs were upper respiratory tract infections, spinal conditions, intervertebral disc disorders, allergies, bronchitis, and nonbronchitic lower respiratory tract disorders. Together, those indications accounted for about half of all prescriptions. The two most common physician specialties prescribing short-term oral corticosteroids were family medicine and general internal medicine.

Nearly half (46.9%) of recipients were prescribed a 6-day prepackaged methylprednisolone "dosepak," which tapers the dose from highest to lowest. Dr Waljee noted in the news release that although individual oral steroid pills can cost less than a dollar each for a 7-day course, the prepackaged version may cost several times that and often initiates therapy with a higher high dose than may be necessary.

Use was more frequent among older patients, women, and white adults, with significant regional variation (all P < .001).

Within 30 days of drug initiation, there was an increase in incidence rate of the following: sepsis, with a rate ratio of 5.30 (95% CI, 3.80 - 7.41); venous thromboembolism, with a rate ratio of 3.33 (95% CI, 2.78 - 3.99); and fracture, with a rate ratio of 1.87 (95% CI, 1.69 - 2.07).

The increased risk persisted at prednisone equivalent doses of less than 20 mg/day, with an incidence rate ratio of 4.02 for sepsis, 3.61 for venous thromboembolism, and 1.83 for fracture (all P < .001).

Rate ratios decreased during the following subsequent 31 to 90 days, however.

Although rare, hospitalizations were also more frequent in users than nonusers, with 0.05% of users admitted for sepsis compared with 0.02% of nonusers. For blood clots, the admission rate was 0.14% versus 0.09%, and for fractures, it was 0.51% vs 0.39%.

Dr Waljee and associates found it significant that the most frequent corticosteroid prescribers were not rheumatologists or other subspecialists experienced in treating inflammatory conditions long-term. "A substantial challenge to improving use of oral corticosteroids will be the diverse set of conditions and types of providers who administer these drugs in brief courses," they write. "This raises the need for early general medical education of clinicians about the potential risks of oral corticosteroids and the evidence basis for their use, given that use may not be specific to a particular disease or specialty."

On the basis of these findings, Dr Waljee recommended prescribing the smallest possible amount of corticosteroids for treating the condition in question. "If there are alternatives to steroids, we should be use those when possible," he said in the release. "Steroids may work faster, but they aren't as risk-free as you might think."

This study was supported partly supported by the University of Michigan's Institute for Healthcare Policy. The authors have disclosed no relevant financial interests.





Curso de Boas Práticas em Saúde: Guardem as datas!



O curso de boas práticas em saúde, com características de treinamento introdutório para a residência médica, será desenvolvido em 5 módulos em período vespertino!

Guardem as datas!





terça-feira, 9 de maio de 2017

segunda-feira, 8 de maio de 2017

Hipotireoidismo subclínico em idosos: Tratar ou não tratar?


Hipotireoidismo subclínico em idosos: Tratar ou não tratar?

Treatment with levothyroxine provides no symptomatic benefit in older adults with subclinical hypothyroidism
Subclinical hypothyroidism is defined biochemically as an elevated serum thyroid-stimulating hormone (TSH) and a normal serum-free thyroxine (T4) level. Some patients with subclinical hypothyroidism may have vague, nonspecific symptoms. Although virtually all experts recommend treatment of subclinical hypothyroidism when serum TSH concentrations are ≥10 mU/L, treatment of patients with TSH values between the upper reference limit and 9.9 mU/L remains controversial, particularly in older patients who are more likely to have complications from unintended overtreatment. In a randomized trial evaluating the effect of levothyroxine versus placebo on quality of life measures in over 700 older patients (mean age 74.4 years) with mean TSH 6.4 mU/L, there was no difference in hypothyroid symptoms or tiredness scores after one year [2]. We do not routinely treat older patients with TSH between the upper reference limit and 9.9 mU/L (algorithm 1).
2. Stott DJ, Rodondi N, Kearney PM, et al. Thyroid Hormone Therapy for Older Adults with Subclinical Hypothyroidism. N Engl J Med 2017.




quinta-feira, 4 de maio de 2017

Dicas para uso racional de sangue: O menos é mais na transfusão também! 1 CHF é melhor do que 2

Caros,


Durante este mês, faremos a divulgação da campanha do HEMOCE para transfusão segura de hemocomponentes! Peço que encaminhem e compartilhem para divulgação ampla de tema tão importante.


Na primeira parte, seguindo o paradigma do "menos é mais", traz-se a seguinte recomendação:



Realizar a transfusão de somente 1 (um) concentrado de hemácias por vez e REAVALIAR clinicamente ao invés de transfusões múltiplas no mesmo dia.


De forma geral, o volume de hemácias transfundido deve ser somente o mínimo necessário a prevenir ou reverter a hipóxia tissular resultante da diminuição da massa eritrocitária, dessa forma garantindo a estabilidade hemodinâmica. Idealmente transfundir um concentrado a cada dia, de acordo com necessidade clínica, seguido de reavaliação. Ou seja, não há necessidade de normalização de índices hematimétricos à custa de politransfusões.

Preferir também realizar a transfusão, quando possível, no período diurno, uma vez que tem-se maior vigilância com relação às reações transfusionais.

Claro que existem situações clínicas específicas (politrauma, por exemplo) que necessitam de politransfusões, entretanto, a recomendação acima é para evitar múltiplas transfusões de forma rotineira, sem reavaliação clínica, guiando-se apenas por exames.

Dica:

Estima-se que cada 4 ml/kg de CHF elevam a Hb em 1 ponto e o Ht em 3%