#MRPearls Can consider fecal immunochemical test (FIT) for blood for colorectal cancer (CRC) screening. It directly measures hemoglobin in the stool and should be repeated annually. The sensitivity for CRC is 73.8% and 23.8% for adenomas >10mm. @VCU_IMRes@AudreyBJernigan (1/4)
#MRPearls Fecal occult blood test (gFOBT) identifies hemoglobin by turning guaiac reagent paper blue. It should be done annually. Requires dietary and med restrictions. Not an ideal option given sens. 70% for CRC. Sens. 23.9% for adenomas >10mm. (2/4)
#MRPearls Multitarget stool DNA testing (FIT-DNA) is a composite of tests that assesses for DNA mutations along with FIT testing. No dietary or medication restrictions. Studied to be done every 3 years. Sens. for CRC 92.3%. Sens. 42.4% for adenomas >10mm. (3/4)
#MRPearls This chart from @UpToDate summarizes the estimated sensitivity, specificity, and cancer-specific deaths averted for each colorectal cancer screening strategy. (4/4) @DrDaniGenMed
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2/CF results from a pathogenic mutation on a single gene located on chromosome 7 that encodes the cystic fibrosis transmembrane conductance regulator protein (CFTR). The CFTR serves as a regulated chloride channel that is important in the viscosity of secretions. @mdlizs
3/The CFTR2 database currently reports over 2k different mutations of the CFTR gene; however, the phenotypic expression of these mutations varies based on the functionality of the gene. The most common mutation is the F508del mutation, which is found in ~ 90% of CF patients.
2/Sweat chloride testing can help confirm the diagnosis; however, in individuals with intermediate results (30-59 mmol/L) further testing needs to be completed. These charts from @CF_Foundation highlights sweat chloride testing results.
3/However, sweat chloride testing can result in false positives for a multitude of different reasons. Here a few common causes:
1⃣Adrenal Insufficiency
2⃣Hypothyroidism
3⃣Panhypopituitarism
4⃣Pancreatitis
5⃣Malnutrition/Anorexia
6⃣Glycogen Storage Disorders
7⃣Atopic Dermatitis
2/A snow globe is a great analogy to discuss and frame delirium with patient’s families. How well the snow is packed at the bottom of the globe can be thought of as predisposing factors. When the snow globe is shaken it represents active delirium from a precipitating cause.
3/Known predisposing factors for delirium include:
1/ Have you ever heard your friendly pulmonologist use the terms “entrapped” or “trapped” lung and were confused about the terminology? If so you are not alone and this is the tweetorial for you! #MedTwitter#tweetorial@crit_caring_MD@lkbrath@VCU_PCCM@PSinkam
2/Let’s first start with some definitions. The term “non-expandable lung” is an umbrella term that is used to describe when the lung is unable to expand to the chest wall in order to achieve visceral and parietal pleura apposition. @AvrahamCooperMD@michellebr00ks@mdlizs