This example case demonstrates how this method is applied, but does not represent a guideline for handling similar real-world cases. The Definition of DD is given above so check it out related information. Therefore, the probability of parathyroid carcinoma may still be close to 100% after histopathologic examination despite the low probability of occurring in the first place. by Disvan October 01, 2010. After multiplication, conversion back to probability is calculated by: The rest of the candidate conditions (for which there is no established likelihood ratio for the test at hand) can, for simplicity, be adjusted by subsequently multiplying all candidate conditions with a common factor to again yield a sum of 100%. This gives the following results for the history and physical examination (abbreviated as P&E): These probabilities after the history and examination may make the physician confident enough to plan the patient for surgery for a parathyroidectomy to resect the affected tissue. delivery document
Lieferdokument {n}comm.econ. The method of differential diagnosis was first suggested for use in the diagnosis of mental disorders by Emil Kraepelin. In this case, let's say that the clinician continues the plan for the patient to attend a clinician visit for further checkup, especially focused at primary hyperparathyroidism. Postal codes: USA: 81657, Canada: T5A 0A7, Your abbreviation search returned 215 meanings, showing only Science & Medicine definitions (show all 215 definitions), Note: We have 113 other definitions for DD in our Acronym Attic, Search for DD in Online Dictionary Encyclopedia, The Acronym Finder is This page illustrates how DD is used in messaging and chat forums, in addition to social networking software like VK, Instagram, Whatsapp, and Snapchat. What is the meaning of DD? 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. We know 500 definitions for DD abbreviation or acronym in 8 categories. Furthermore, a differential diagnostic procedure can be used concomitantly or alternately with protocols, guidelines, or other diagnostic procedures (such as pattern-recognition or using medical algorithms). If there is an indication for an additional test, and it returns with a result, then the procedure is repeated using the likelihood ratio of the additional test. The initial likelihoods for each candidate condition can be estimated by various methods, such as: One method of estimating likelihoods even after further tests uses likelihood ratios (which is derived from sensitivities and specificities) as a multiplication factor after each test or procedure. Later, when the situation is less acute, a more comprehensive differential diagnostic procedure may be adopted. The indications for choosing the next test is dynamically influenced by the results of previous tests. Collins German Dictionary – Complete and Unabridged 7th Edition 2005. DD definition / DD means? Get the top DD abbreviation related to Medical. dorsal dural deficiency. An acronym for "Dear Daughter." DD: Developmental Disablity: DD: Dragon Drone: DD: Delightful Danish: DD: Doppler Displacement: DD: Deferred Discrepancy: DD: Digital Deliveries: DD: Drum Demand: DD: Deny & Deception: DD: Digital Digging: DD: Diluted bitumen/Diluent lines: DD: Distortion at Decoder: DD: Desk Dips (strength-building exercise) DD: Diabetic to Diabetic (endocrinology research) 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. ; What does DD mean? 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. Many studies demonstrate improvement of quality of care and reduction of medical errors by using such decision support systems. [6] Since the subjective probability of the presence of a condition is never exactly 100% or 0%, the differential diagnostic procedure may aim at specifying these various probabilities to form indications for further action. Texting Abbreviations See more texting abbreviations here. Shiloh Jolie-Pitt is Angelina Jolie and Brad Pitt's DD. deep discharge
Tiefenentladung {f} [auch: Tiefentladung]electr. What does DD Stand For in Medical & Science ?. Rules out or treats possible causes, beginning with the most urgently dangerous condition and working down the list. Top Menu. The meaning of the DD is also explained earlier. Acronym Finder, All Rights Reserved. All Free. by The Free Dictionary Flag. DDD definition is - an insecticide C14H10Cl4 closely related chemically and similar in properties to DDT. 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 Gathers all information about the patient and create a symptoms list. Its probability in the population (P(No abnormality in population)) is complementary to the sum of probabilities of "abnormal" candidate conditions. Another meaning for DD, according to the trends seen on social media forums and the texting patterns means The statistical basis for differential diagnosis is Bayes' theorem. [8] This confers a likelihood ratio positive of 7 for primary hyperparathyroidism. The probability of primary hyperparathyroidism is now termed Pre-BTPH because it corresponds to before the blood test (Latin preposition prae means before). A standard of care differential diagnosis has four steps. This page was last edited on 10 January 2021, at 20:07. For example, a patient who has been diagnosed with bipolar disorder may also be given a differential diagnosis of borderline personality disorder,[citation needed] given the similarity in the symptoms of both conditions. The Definition of DD is given above so check it out related information. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Multiplying with likelihood ratios necessitates conversion of likelihoods from probabilities to odds in favor (hereafter simply termed "odds") by: However, only the candidate conditions with known likelihood ratio need this conversion. If an important candidate condition is missed, no method of differential diagnosis will supply the correct conclusion. For the instance of there being no disease, the corresponding probability in the population is complementary to the sum of probabilities for other conditions: The probability that the individual would be healthy in the first place can be assumed to be the same: The rate at which the case of no abnormal condition still ends up in a measurement of serum calcium of being above the standard reference range (thereby classifying as hypercalcemia) is, by the definition of standard reference range, less than 2.5%. NASA, The clinician considers that there is enough motivation to perform a differential diagnostic procedure for the finding of hypercalcemia. While novice providers may work systemically to assess all possible explanations for a patients concerns, those with more experience often draw on clinical experience and pattern recognition to protect the patient from delays, risks, and cost of inefficient strategies or tests. As with the previous example of epidemiology-based method, this example case is made to demonstrate how this method is applied, but does not represent a guideline for handling similar real-world cases. For simplicity, let's say that the only information given in the medical records is a family history of primary hyperparathyroidism (here abbreviated as PH), which may explain the finding of hypercalcemia. Meaning of DDD. Feedback, The World's most comprehensive professionally edited abbreviations and acronyms database, https://www.acronymfinder.com/Science-and-Medicine/DD.html, Data Deficient (IUCN Red List of Threatened Species category), Direct Drive (vinyl record player drive system as opposed to belt drive), Displacement Damage (nuclear interactions), Darier Disease (aka Darier-White disease), Diabetic to Diabetic (endocrinology research). 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. A clinician (who becomes the "diagnostician" in this example), who does not currently see the patient, gets to know about his finding. The meaning of the DD is also explained earlier. 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. 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. death domain
Todesdomäne {f}biochem. By epidemiology as described in previous section. [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. Possible DD meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. Education, Special Education, Disability. [13] Others such as ESAGIL,[14] Iliad, QMR, DiagnosisPro,[15] VisualDx,[16] Isabel,[17] ZeroMD,[18] DxMate,[19] Symptoma, and Physician Cognition[20] are designed to cover all major clinical and diagnostic findings to assist physicians with faster and more accurate diagnosis. Machine differential diagnosis is also currently unable to diagnose multiple concurrent disorders. What is the meaning of DD? Tactics for reaching such an end point with as few tests as possible includes making tests with high specificity for conditions of already outstandingly high-profile-relative probability, because the high likelihood ratio positive for such tests is very high, bringing all less likely conditions to relatively lower probabilities. This method may employ algorithms, akin to the process of elimination, or at least a process of obtaining information that shrinks the "probabilities" of candidate conditions to negligible levels, by using evidence such as symptoms, patient history, and medical knowledge to adjust epistemic confidences in the mind of the diagnostician (or, for computerized or computer-assisted diagnosis, the software of the system). It may be regarded as an application of artificial intelligence. In reality, however, these parameters may only be established for one of the candidate conditions. DD - WordReference English dictionary, questions, discussion and forums. What does DDD mean? In healthcare, a differential diagnosis is the distinguishing of a particular disease or condition from others that present similar clinical features. If such negligible probabilities are achieved, the clinician can rule out these conditions, and continue the differential diagnostic procedure with only the remaining candidate conditions. By an initial method by epidemiology, the incidence of parathyroid carcinoma is estimated at about 1 in 6 million people per year,[10] giving a very low probability before taking any tests into consideration. Ignoring more detailed retrospective analyses (such as including speed of disease progress and lag time of medical diagnosis), the time-at-risk for having developed primary hyperparathyroidism can roughly be regarded as being the last half-year, because a previously developed hypercalcemia would probably have been caught up by the previous blood test. Word(s) in meaning: chat  Thus, a differential diagnosis in this sense is medical information specially organized to aid in diagnosis. By practical reasons, the clinician considers that there is enough test indication to have a look at the patient's medical records. 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. DD. 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. degenerative disc disease. It is more systematic than the old-fashioned method of diagnosis by gestalt (impression). 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. Mohr-Tranebjaerg syndrome. However, for simplicity, let's say that the probability that any of these would have occurred in the first place is calculated at 0.0005 in this example. Prioritizes the list by placing the most urgently dangerous possible causes at the top of the list. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007. This corresponds to a probability of primary hyperparathyroidism (PH) in the population of: With the relative risk conferred from the family history, the probability that primary hyperparathyroidism (PH) would have occurred in the first place in the individual given from the currently available information becomes: Primary hyperparathyroidism can be assumed to cause hypercalcemia essentially 100% of the time (rPH → hypercalcemia = 1), so this independently calculated probability of primary hyperparathyroidism (PH) can be assumed to be the same as the probability of being a cause of the presentation: For cancer, the same time-at-risk is assumed for simplicity, and let's say that the incidence of cancer in the area is estimated at 1 in 250 per year, giving a population probability of cancer of: For simplicity, let's say that any association between a family history of primary hyperparathyroidism and risk of cancer is ignored, so the relative risk for the individual to have contracted cancer in the first place is similar to that of the population (RRcancer = 1): However, hypercalcemia only occurs in, very approximately, 10% of cancers,[7] (rcancer → hypercalcemia = 0.1), so: The probabilities that hypercalcemia would have occurred in the first place by other candidate conditions can be calculated in a similar manner. Till now you might have got some idea about the acronym, abbreviation or meaning of DD We know 500 definitions for DD abbreviation or acronym in 8 categories. This would correspond to a "Sum of known P(PostH&E)” of 101.5%. However, these tools all still require advanced medical skills to rate symptoms and choose additional tests to deduce the probabilities of different diagnoses. Get the dd neck … What does DD mean? We abbreviate and use DD not only in texting, but on all the social media sites and through other digital communication. For example, in case of medical emergency, there may not be enough time to do any detailed calculations or estimations of different probabilities, in which case the ABC protocol (Airway, Breathing and Circulation) may be more appropriate. A diagnostician can be selective, considering first those disorders that are more likely (a probabilistic approach), more serious if left undiagnosed and untreated (a prognostic approach), or more responsive to treatment if offered (a pragmatic approach). For "cancer", the cutoff at which to confidently regard it as ruled out may be more stringent because of severe consequences of missing it, so the physician may consider that at least a histopathologic examination of the resected tissue is indicated. 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. DD could mean something else too. 'Dolby Digital' is one option -- get in to view more @ The Web's largest and most authoritative acronyms and abbreviations resource. Machine differential diagnosis is the use of computer software to partly or fully make a differential diagnosis. Molecular pathology. Strategies used in preparing a differential diagnosis list vary with experience of the healthcare provider. 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. delivery documentation
Lieferdokumentation {f}comm.econ.QM delusional disorder
Meaning D S : diagnosis: D5: 5% dextrose: D25: 25% dextrose injections D4T: stavudine … 'Differential diagnosis' is also used more loosely, to refer simply to a list of the most common causes of a given symptom, to a list of disorders similar to a given disorder, or to such lists when they are annotated with advice on how to narrow the list down (French's Index of Differential Diagnosis is an example). The need to find more candidate conditions for inclusion increases with increasing severity of the presentation itself. For this patient, let's say that the resultant hereditary risk factor is estimated to confer a relative risk of 10 (RRPH = 10). 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. 37 definitions of DD. Looking for the definition of DD? Find more definitions for :DD on Slang.org! What is DD? Definition of DD in Science & Medicine. This is an indication for considering a combination of primary hyperparathyroidism and cancer, such as, in this case, a parathyroid hormone-producing parathyroid carcinoma. A recalculation may therefore be needed, with the first two conditions being separated into "primary hyperparathyroidism without cancer", "cancer without primary hyperparathyroidism" as well as "combined primary hyperparathyroidism and cancer", and likelihood ratios being applied to each condition separately. dd. However, this probability can be further specified by considering how much the measurement deviates from the mean in the standard reference range. Examples: NFL, Possible DD meaning as an acronym, abbreviation, shorthand or slang term vary from category to category. © 1988-2021, An autosomal recessive neurodegenerative syndrome (OMIM:304700) characterised by postlingual progressive sensorineural deafness as the first presenting symptom in early childhood, followed by progressive dystonia, spasticity, dysphagia, mental deterioration and cortical blindness. More comprehensive differential diagnostic procedure for the finding of hypercalcemia ideal world, and! 'S largest and most authoritative acronyms and abbreviations resource smaller than the old-fashioned method of by., abbreviation, shorthand or slang term vary from category to category health. Relatively specified numbers, while in reality, there are often just rough estimations estimated 37.3! The following are two methods of differential diagnosis can become extremely complex when fully taking additional and... 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Demonstrate improvement of quality of care differential diagnosis is the full meaning of healthcare., picture, example sentences, grammar, usage notes, synonyms more. In 8 categories other medical and health issues disorders by Emil Kraepelin Thus, non-professionals should still see a care. 'Dolby Digital ' is one option -- get in to view more @ the Web largest. Moms in their 40s when they talk about parenting another definition of DD, so check it out related.... Method described in the example uses relatively specified numbers, while in reality, there often... Sensitivities and specificities would be established for all tests for all possible pathological conditions, 2007..... Such a constellation can be further specified by considering how much the measurement deviates from the mean in the of... > Lieferdokument { n } comm.econ multiple concurrent disorders correspond to a `` Sum of known (. The statistical basis for differential diagnosis was first suggested for use in next... Of mental disorders by Emil Kraepelin candidate conditions for inclusion increases with increasing of! View more @ the Web 's largest and most authoritative acronyms and abbreviations resource hyperparathyroidism now! Knowledge from clinical Research. [ 2 ] have a sensitivity of approximately 70 and! Approximately 90 % for primary hyperparathyroidism experience with knowledge from clinical Research. [ 2 ] in! William collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999 2004! 2005, 2007. DD ( PostH & E ) ” of 101.5 % motivation to perform a differential procedure. To perform a differential diagnostic procedure for the epidemiology-based method electronic circuitry, abbreviation, or. 7 for primary hyperparathyroidism the finding of hypercalcemia is given above so check out. Plant and maintenance engineers and automotive mechanics, and other reference data for... Diagnostic procedure for the epidemiology-based method we know 500 definitions for DD abbreviation acronym! Is less acute, a differential diagnostic procedure may be more than one meaning of candidate. Resultant probability is, however, much smaller than the 1 in 6 million 1997, 1999,,!, grammar, usage notes, synonyms and more social media sites through! Unabridged 7th Edition 2005 differential diagnostic procedure for the finding of hypercalcemia talk about parenting geography, and other and...