Mostly used by moms in their 40s when they talk about parenting. This case is continued in the example of Combinations in corresponding section below. A clinician (who becomes the "diagnostician" in this example), who does not currently see the patient, gets to know about his finding. One method of performing a differential diagnosis by epidemiology aims to estimate the probability of each candidate condition by comparing their probabilities to have occurred in the first place in the individual. Rules out or treats possible causes, beginning with the most urgently dangerous condition and working down the list. It is based on probabilities related both to the presentation (such as pain) and probabilities of the various candidate conditions (such as diseases). Get the dd neck … degenerative disc disease. What does DD Stand For in Medical & Science ?. Please look for them carefully. Gathers all information about the patient and create a symptoms list. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007. [1] Differential diagnostic procedures are used by clinicians to diagnose the specific disease in a patient, or, at least, to eliminate any imminently life-threatening conditions. Find more definitions for :DD on Slang.org! Please look for them carefully. Flag. With the likelihood ratio positive of 7 for the blood test, the post-test odds is calculated as: An Odds(PostBTPH) of 4.16 is again converted to the corresponding probability by: The sum of the probabilities for the rest of the candidate conditions should therefore be: Before the blood test for parathyroid hormone, the sum of their probabilities were: Therefore, to conform to a sum of 100% for all candidate conditions, each of the other candidates must be multiplied by a correcting factor: For example, the probability of cancer after the test is calculated as: The probabilities for each candidate conditions before and after the blood test are given in following table: These "new" percentages, including a profile-relative probability of 80% for primary hyperparathyroidism, underlie any indications for further tests, treatments or other actions. Such an end point mainly occurs when one candidate condition becomes so certain that no test can be found that is powerful enough to change the relative probability-profile enough to motivate any change in further actions. As an analogy, when a die has landed the outcome is certain by 100%, but the probability that it Would Have Occurred in the First Place (hereafter abbreviated WHOIFP) is still 1/6. To continue the example used above, let's say that the history and physical examination was indicative of cancer as well, with a likelihood ratio of 3, giving an Odds(PostH&E) of 0.057, corresponding to a P(PostH&E) of 5.4%. This page illustrates how DD/D is used in messaging and chat forums, in addition to social networking software like VK, Instagram, Whatsapp, and Snapchat. DD - WordReference English dictionary, questions, discussion and forums. ‘DD and I went shopping then stayed in the warm and watched TV.’ ‘After dinner DD went to a friends for a sleepover.’ ‘I had made an appointment for DD to have her haircut at 10 am.’ ‘So much left to do to get DD ready for Brownies camp this weekend!’ ‘Taking DD to the doctor today, after she was ill again last nite.’ Possible DD meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Texting Abbreviations See more texting abbreviations here. In healthcare, a differential diagnosis is the distinguishing of a particular disease or condition from others that present similar clinical features. What is DD? The presence of unspecific pathologic symptoms and signs in the history and examination are often concurrently indicative of cancer as well, and let's say that the tests gave an overall likelihood ratio estimated at 1.5 for cancer. At this point, the probability of "other conditions" is so low that the physician cannot think of any test for them that could make a difference that would be substantial enough to form an indication for such a test, and the physician thereby practically regards "other conditions" as ruled out, in this case not primarily by any specific test for such other conditions that were negative, but rather by the absence of positive tests so far. Often, each individual option of a possible disease is called a differential diagnosis (e.g., acute bronchitis could be a differential diagnosis in the evaluation of a cough, even if the final diagnosis is common cold). The main causes of hypercalcemia are primary hyperparathyroidism (PH) and cancer, so for simplicity, the list of candidate conditions that the clinician could think of can be given as: The probability that 'primary hyperparathyroidism' (PH) would have occurred in the first place in the individual (P(PH WHOIFPI)) can be calculated as follows: Let's say that the last blood test taken by the patient was half a year ago and was normal, and that the incidence of primary hyperparathyroidism in a general population that appropriately matches the individual (except for the presentation and mentioned heredity) is 1 in 4000 per year. dense deposit disease. [21] Thus, non-professionals should still see a health care provider for a proper diagnosis. This page was last edited on 10 January 2021, at 20:07. This page illustrates how DD is used in messaging and chat forums, in addition to social networking software like VK, Instagram, Whatsapp, and Snapchat. Developmental Disability. daily dose
Tagesdosis {f} pharm. This example case demonstrates how this method is applied, but does not represent a guideline for handling similar real-world cases. By practical reasons, the clinician considers that there is enough test indication to have a look at the patient's medical records. The American television medical drama House featuring Hugh Laurie as the main protagonist Dr. Gregory House who leads a team of diagnosticians at the fictional Princeton–Plainsboro Teaching Hospital in New Jersey revolves around using differential diagnostics procedures in a bid to come up with the right diagnosis. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical… Thus, a differential diagnosis in this sense is medical information specially organized to aid in diagnosis. This would correspond to a "Sum of known P(PostH&E)” of 101.5%. Such a constellation can be estimated to have a sensitivity of approximately 70% and a specificity of approximately 90% for primary hyperparathyroidism. Also, the example uses relatively specified numbers with sometimes several decimals, while in reality, there are often simply rough estimations, such as of likelihoods being very high, high, low or very low, but still using the general principles of the method. DD: Delightful Daughter: DD: Direct Downlink: DD: Damaged Dwelling (FEMA) DD: Double Desktop: DD: Decoy Discrimination: DD: Directives Documentation (NASA) DD: Dionicko Drustvo (Croatian: limited partnership) DD: Deo Dedit (Latin: Gave To God) DD: Differential Doppler: DD: Differential Detector: DD: Dangerous, Detected Failure: DD: Delniska Druzba (Slovenian company) DD: Development Directive For simplicity, let's say that the clinician first receives the blood test (in formulas abbreviated as "BT") result for the parathyroid hormone analysis, and that it showed a parathyroid hormone level that is elevated relatively to what would be expected by the calcium level. What does DD mean? With updated probabilities for each of the candidate conditions, the indications for further tests, treatments or other actions changes as well, and so the procedure can be repeated until an end point where there no longer is any indication for currently performing further actions. Methods similar to those of differential diagnostic processes in medicine are also used by biological taxonomists to identify and classify organisms, living and extinct. Top Menu. Till now you might have got some idea about the acronym, abbreviation or meaning of DD For DD we have found 500 definitions. For other conditions, as well as the instance of not having any disease at all, let's say that it's unknown how they are affected by the tests at hand, as often happens in reality. Shiloh Jolie-Pitt is Angelina Jolie and Brad Pitt's DD. Education, Special Education, Occupational Therapy. Patient safety requires that the clinician: If, after this process of winnowing down possible causes, no diagnosis remains, it means either that the clinician has made an error, or that the condition is undocumented or under-appreciated in the literature. A clinician visit can, theoretically, be regarded as a series of tests, including both questions in a medical history as well as components of a physical examination, where the post-test probability of a previous test can be used as the pre-test probability of the next. The condition of highest profile-relative probability (except "no disease") is primary hyperparathyroidism (PH), but cancer is still of major concern, because if it is the actual causative condition for the hypercalcemia, then the choice of whether to treat or not likely means life or death for the patient, in effect potentially putting the indication at a similar level for further tests for both of these conditions. For an individual (who becomes the "patient" in this example), a blood test of, for example, serum calcium shows a result above the standard reference range, which, by most definitions, classifies as hypercalcemia, which becomes the "presentation" in this case. However, these tools all still require advanced medical skills to rate symptoms and choose additional tests to deduce the probabilities of different diagnoses. Yet, the contributive probability fractions of each condition are assumed the same, relatively: When an individual presents with a symptom or sign, Pr(Presentation has occurred in individual) is 100% and can therefore be replaced by 1, and can be ignored since division by 1 does not make any difference: The total probability of the presentation to have occurred in the individual can be approximated as the sum of the individual candidate conditions: Also, the probability of the presentation to have been caused by any candidate condition is proportional to the probability of the condition, depending on what rate it causes the presentation: The probability that a condition would have occurred in the first place in an individual is approximately equal to that of a population that is as similar to the individual as possible except for the current presentation, compensated where possible by relative risks given by known risk factor that distinguish the individual from the population: The following table demonstrates how these relations can be made for a series of candidate conditions: One additional "candidate condition" is the instance of there being no abnormality, and the presentation is only a (usually relatively unlikely) appearance of a basically normal state. However, this probability can be further specified by considering how much the measurement deviates from the mean in the standard reference range. It was estimated at 37.3%, corresponding to an odds of 0.595. death domain Todesdomäne {f}biochem. DD definition / DD means?
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