What's the difference between required and unnecessary?

Required


Definition:

  • (imp. & p. p.) of Require

Example Sentences:

  • (1) A 2.5-month-old child with cyanotic heart disease who required long-term PGE1 infusions; developed widespread periosteal reactions during the course of therapy.
  • (2) Patients with normal echocardiogram and ECG on admission do not require intensive care monitoring.
  • (3) More than 2 months after the combined treatment were required for the suppression.
  • (4) It involves creativity, understanding of art form and the ability to improvise in the highly complex environment of a care setting.” David Cameron has boosted dementia awareness but more needs to be done Read more She warns: β€œTo effect a cultural change in dementia care requires a change of thinking … this approach is complex and intricate, and can change cultural attitudes by regarding the arts as central to everyday life of the care home.” Another participant, Mary*, a former teacher who had been bedridden for a year, read plays with the reminiscence arts practitioner.
  • (5) Blatter requires a two-thirds majority of the 209 voters to triumph in the opening round, with a simple majority required if it goes to a second round.
  • (6) In platform shoes to emulate Johnson's height, and with the aid of prosthetic earlobes, Cranston becomes the 36th president: he bullies and cajoles, flatters and snarls and barks, tells dirty jokes or glows with idealism as required, and delivers the famous "Johnson treatment" to everyone from Martin Luther King to the racist Alabama governor George Wallace.
  • (7) Even so, amputation of fifteen extremities and four other major excisions were required in twelve patients.
  • (8) However, its identity requires further characterization.
  • (9) Past imaging techniques shown in the courtroom have made the conventional rules of evidence more difficult because of the different informational content and format required for presentation of these data.
  • (10) Further studies are required to elucidate specific roles of the steroid-induced proteins in the effects of glucocorticoids on HTM and HS cells.
  • (11) As the requirements to store and display these images increase, the following questions become important: (a) What methods can be used to ensure that information given to the physician represents the originally acquired data?
  • (12) Maximal covalent binding of [4,5-14C]ronidazole to DNA also required four-electron reduction, consistent with previous studies of the covalent binding of this agent to immobilized sulfhydryl groups [Kedderis et al.
  • (13) Most patients of the bopindolol-group needed 1 mg once daily as compared to those on the nifedipine who required 20 mg b.i.d.
  • (14) Throughout the period of rehabilitation, the frequent changes of a patient's condition may require a process of ongoing evaluation and appropriate adjustments in the physical therapy program.
  • (15) Breast reconstruction should not be limited to the requiring patients, but should represent, in selected cases with favourable prognosis, an integrative and complementary procedure of the treatment.
  • (16) A domain containing a CA repeat, similar to ones found in other late, cAMP-induced Dictyostelium genes, is required for cAMP-induced and developmental expression.
  • (17) Many problems at the macroscopic level require clarification of how an animal uses a compartment of suite of muscles and whether morphological differences reflect functional ones.
  • (18) Although the longest period required for resolving weakness was three days, the MRI, the CT and the electroencephalogram revealed no significant abnormality.
  • (19) T cell costimulation by molecules on the antigen presenting cell (APC) is required for optimal T cell proliferation.
  • (20) In contrast, HEL antigen requires metabolically active cells for both of these processes.

Unnecessary


Definition:

Example Sentences:

  • (1) The results of the evaluation confirm that most problems seen by first level medical personnel in developing countries are simple, repetitive, and treatable at home or by a paramedical worker with a few safe, essential drugs, thus avoiding unnecessary visits to a doctor.
  • (2) There is no evidence that health-maintenance organizations reduce admissions in discretionary or "unnecessary" categories; instead, the data suggest lower admission rates across the board.
  • (3) This may result in the unnecessary implementation of antidotal therapy.
  • (4) Thus, the enzyme-immunoassay shows specificity and sensitivity comparable to radioimmunoassay making use of radioactive tracer unnecessary.
  • (5) It is important to be aware of the histological characteristics of this essentially benign condition so that unnecessary radical therapies can be avoided.
  • (6) However, patients can be taught how to retard the onset of wrinkles by avoiding unprotected sun exposure, unnecessary facial movements, and certain sleeping positions.
  • (7) It is unnecessary to make any special more complicated incision designed to avoid lymphatics.
  • (8) In these cases, a thyroid scintiscan may avoid an unnecessary surgical intervention.
  • (9) The differentiation between the various modes of involvement is essential as some of them may be confused with recurrence and the clinician might resort to unnecessary drastic measures like enucleation.
  • (10) Check out the latest bill from Russia's parliament, the Duma: its aim is to ban the "unnecessary" usage of foreign words (in cases where there is a pre-existing Russian counterpart).
  • (11) Standard additions are unnecessary; Pt concentrations are read from a calibration chart of peak heights, which is linear up to 1.6 mg per liter.
  • (12) We encountered terrorists who wanted to kill us and we did everything we could to prevent unnecessary injury."
  • (13) Thus, modification in the dosage regimen of digoxin may be unnecessary in the case of coadministration with captopril.
  • (14) Only CT-guided or direct parasternal biopsy including immunhistochemistry can yield a reliable preoperative diagnosis and prevent unnecessary operation of lymphomas.
  • (15) The sonographic method, with a 97.7% specificity and a negative predictive value of 89.5%, proved to be specific enough to eliminate the necessity of routine catheterization for measuring residual bladder volumes of greater than or equal to 150 cm3, thus decreasing the incidence of some major postoperative complications that can occur due to unnecessary catheterization.
  • (16) With these scores we expect to facilitate the diagnostic screening, to indicate the way of therapy and to avoid unnecessary surgery for urinary incontinence in cases of motor-urge-incontinence (detrusor instability, unstable bladder), as long as a urodynamic examination is not feasible on every incontinent women.
  • (17) In some cases this has led to the misdiagnosis of mediastinal pathology and an unnecessary thoracotomy.
  • (18) No abdominal injuries were present in the group in whom the lavage results were negative, while no unnecessary laparotomies were performed in the group with a 4+ or 5+ positive DPL (calorimetric method).
  • (19) It would thus appear that repetition of the hCG injection at intervals of less than 4 days is unnecessary, and that a total stimulation period of 2-3 weeks is sufficient.
  • (20) The importance of ECG studies in these cases is stressed in order to establish the differential diagnosis and avoid unnecessary delays in the application of the proper therapy.