What's the difference between efficacious and useless?

Efficacious


Definition:

  • (n.) Possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law.

Example Sentences:

  • (1) In conclusion, the efficacy of free tissue transfer in the treatment of osteomyelitis is geared mainly at enabling the surgeon to perform a wide radical debridement of infected and nonviable soft tissue and bone.
  • (2) The rise of malaria despite of control measures involves several factors: the house spraying is no more accepted by a large percentage of house holders and the alternative larviciding has only a limited efficacy; the houses of American Indians have no walls to be sprayed; there is a continuous introduction of parasites by migrants.
  • (3) Treatment termination due to lack of efficacy or combined insufficient therapeutic response and toxicity proved to be influenced by the initial disease activity and by the rank order of prescription.
  • (4) These findings raise questions regarding the efficacy of medical school curriculum in motivating career choices in primary care.
  • (5) Accidentally discovered nearly 40 years ago as the first true antidepressants, the MAOIs soon fell into disfavor due to concerns about toxicity and seemingly lesser efficacy compared with the newer tricyclic compounds.
  • (6) In patients who had undergone gastric operations, the efficacy of a parenteral rehabilitation with plasma, human albumin and Aminofusin L forte was determined by assessing the extravascular albumin pool.
  • (7) It is especially efficacious in evaluating patients with cystic lesions, especially those with complex cysts not clearly of water density.
  • (8) The efficacies of pefloxacin, fosfomycin, and both of these agents in combination against methicillin-resistant Staphylococcus aureus were assessed in a rat endocarditis model.
  • (9) It is concluded that extradural adrenaline does not usefully reduce systemic absorption of 0.5% bupivacaine, but may improve its efficacy in extradural anaesthesia for elective Caesarean section.
  • (10) Efficacy and tolerability of perorally administered desmopressin were evaluated in 12 adult patients suffering from central diabetes insipidus.
  • (11) We evaluated the safety and efficacy of a conjugate vaccine that links the H. influenzae type b capsular polysaccharide to the outer-membrane protein complex (OMPC) of Neisseria meningitidis serogroup B.
  • (12) Addition of IL7 either alone, or in combination with low doses of IL2, resulted in the generation of CTL with significantly (6-8-fold) enhanced therapeutic efficacy in vivo.
  • (13) The efficacy of the process is dependent on immersion medium, while the degree of surrounding tissue damage is dependent on energy dose.
  • (14) However, self-efficacy (defined as confidence in being able to resist the urge to drink heavily) assessed at intake of treatment, was strongly associated with the level of consumption on drinking occasions at follow-up.
  • (15) The objective of this work was to determine the efficacy of an endoscopic approach coupled to a Nd:YAG laser fiber in performing arytenoidectomy.
  • (16) and (4) Compared to the instruction provided by instructors from other medical and academic disciplines, do paediatric residents perceive differences in the teaching efficacy and clinical relevance of instruction provided by paediatricians?
  • (17) A prospective randomized trial involving 64 patients with bleeding peptic ulcers was performed to assess the efficacy of two modalities of injection therapy.
  • (18) A randomised double-blind trial comparing this preparation with a so-called 'shotgun' combination containing 0.05% betamethasone 17-valerate, 0.1% gentamicin, 1.0% tolnaftate and 1.0% clioquinol in 288 patients in the Philippines resulted in a better efficacy for the diflucortolone preparation in the 80 patients with bacterially or mycotically infected skin diseases.
  • (19) With attention to proper performance and patient selection, spinal and epidural anaesthesia are safe and efficacious options when choosing anaesthetic technique.
  • (20) How useful is the technique for evaluating therapeutic efficacy?

Useless


Definition:

  • (a.) Having, or being of, no use; unserviceable; producing no good end; answering no valuable purpose; not advancing the end proposed; unprofitable; ineffectual; as, a useless garment; useless pity.

Example Sentences:

  • (1) Theoretical findings on sterilization and disinfection measures are useless for the dental practice if their efficiency is put into question due to insufficient consideration of the special conditions of dental treatment.
  • (2) It’s useless if we try and fight with them through force, so we try and fight with them through humour.” “There is a saying that laughing is the best form of medicine.
  • (3) It also seems to be a bit useless as a way of gathering intelligence.
  • (4) It is concluded that the femoral stem should be as thick as possible and that the collar of the prosthesis is useless.
  • (5) The clorus water disinfecting conventional methods by many reasons are useless, even in urbanized cities.
  • (6) By now seemingly every print and online outlet has had a crack at explaining why the Sunday shows are so phenomenally useless.
  • (7) He added: "Why on earth is this useless Goverment pandering to Puffs?
  • (8) It’s great that the new Star Wars film is more diverse , with John Boyega and Daisy Ridley in significant roles; I am pleased to see everyone on #BoycottStarWarsVII gnash and whine uselessly.
  • (9) Inappropriate, useless and potentially harmful surgical diagnostic procedures are also avoided.
  • (10) However, under normal working conditions, taking into account the period of time which inevitably elapses between the patient feeling pain in the kidney and his reaching the Emergency Department and the necessary examinations being carried out which enable the correct diagnosis to be made, the number of hours which have passed make attempts at conservative surgery completely useless.
  • (11) However one should not ask for the impossible of the treatment of male infertility since the most optimal seminal analysis result is useless in the presence of a monophysic menstrual cycle in the partner.
  • (12) The endoscopic retrograde cholangiography is of greatest practical significance for the differential diagnosis of the cholestatic icterus: non-obstructed bile ducts exclude an extrahepatic icterus and render a laparotomy useless.
  • (13) If you have a regulator behaving this uselessly, I suspect MPs will start saying this is not regulation," he said.
  • (14) The importance of a diagnosis before surgery by cytopunction and drill-biopsy has to be emphasized, to prevent an useless mastectomy.
  • (15) In conclusion, excepted for pituitary deficiency, basal plasma TSH (IRMA) levels are accurate and sufficient in the evaluation of the thyroid function and make the TRH-test useless.
  • (16) (4) The annual vaccination campaigns since 1970 against FMD were useless because most of the primary outbreaks of FMD since then can be traced to the production or the application of vaccines.
  • (17) A hepatic lesion regarded as useless for the ultimate diagnosis was present in 16 cases (14.5 per cent).
  • (18) Talking this week to several, I heard the same story of exorbitant fees and shocking interest rates throttling real production, while Adair Turner's "socially useless" financial products attract limitless bubble credit.
  • (19) Clinical evaluation and laboratory tests are useless.
  • (20) The Chinese government is depicted as benevolent, while the US government manages to be both sinister and useless – typified by the black-clad CIA operatives, one of whom gets beaten up by a Chinese character.