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  2. Abbrev. [1]Meaning [1] Latin (or Neo-Latin) origin [1]; a.c. before meals: ante cibum a.d., ad, AD right ear auris dextra a.m., am, AM morning: ante meridiem: nocte ...

  3. List of medical abbreviations: P - Wikipedia

    en.wikipedia.org/wiki/List_of_medical...

    PR: prothrombin ratio p.r. per rectum (as noun: rectal examination) PRA: plasma renin activity: PRBC PRBCs: packed red blood cells: PREA: Pediatric Research Equity Act Preme: premature infant (see premature birth) Prep PrEP preparation pre-exposure prophylaxis [6] PRES: Posterior reversible encephalopathy syndrome PRIND

  4. List of abbreviations used in medical prescriptions - Wikipedia

    en.wikipedia.org/wiki/List_of_abbreviations_used...

    This is a list of abbreviations used in medical prescriptions, including hospital orders (the patient-directed part of which is referred to as sig codes).This list does not include abbreviations for pharmaceuticals or drug name suffixes such as CD, CR, ER, XT (See Time release technology § List of abbreviations for those).

  5. List of medical abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_medical_abbreviations

    Pronunciation follows convention outside the medical field, in which acronyms are generally pronounced as if they were a word (JAMA, SIDS), initialisms are generally pronounced as individual letters (DNA, SSRI), and abbreviations generally use the expansion (soln. = "solution", sup. = "superior").

  6. PR interval - Wikipedia

    en.wikipedia.org/wiki/PR_interval

    In electrocardiography, the PR interval is the period, measured in milliseconds, that extends from the beginning of the P wave (the onset of atrial depolarization) until the beginning of the QRS complex (the onset of ventricular depolarization); it is normally between 120 and 200 ms in duration.

  7. First-degree atrioventricular block - Wikipedia

    en.wikipedia.org/wiki/First-degree_atrio...

    The normal PR interval is from 120 ms to 200 ms in length. This is measured from the initial deflection of the P wave to the beginning of the QRS complex. [3] In first-degree heart block, the AV node conducts the electrical activity more slowly. This is seen as a PR interval greater than 200 ms in length on the surface ECG.

  8. Prothrombin time - Wikipedia

    en.wikipedia.org/wiki/Prothrombin_time

    The prothrombin time (PT) – along with its derived measures of prothrombin ratio (PR) and international normalized ratio (INR) – is an assay for evaluating the extrinsic pathway and common pathway of coagulation. This blood test is also called protime INR and PT/INR.

  9. Response evaluation criteria in solid tumors - Wikipedia

    en.wikipedia.org/wiki/Response_Evaluation...

    The duration of overall response is measured from the time measurement criteria are met for CR or PR (whichever status is recorded first) until the first date that recurrence or PD is objectively documented, taking as reference for PD the smallest measurements recorded since the treatment started.