" ! DOCUMENTS FLASHCARDS ≡ MCQs in Medical Physiology $ Login E.S.Prakash % Flashcards [H A. B. C. D. +] is 80 nmol/L, then plasma [HCO 40 mmol/L 28 mmol/L 24 mmol/L 10 mmol/L 3] B. Base excess C. Osmolar gap D. Serum osmolality is: 99. The severity of acidosis is related to: A. anion gap B. pH of arterial plasma C. pH of ICF and plasma D. plasma HCO 3 93. In Question 92, what is the acid-base status? A. Compensated metabolic alkalosis B. Uncompensated respiratory acidosis C. Compensated respiratory acidosis D. Uncompensated metabolic acidosis E. Normal acid-base status & Collections ' Add to ... 95. The most common acid-base disturbance in patients who are on mechanical ventilators is: A. metabolic acidosis B. metabolic alkalosis C. respiratory acidosis D. respiratory alkalosis 100. The following data are obtained on a patient on a 2000 kcal diet that includes 1 g of protein per kg body weight. Creatinine clearance = 100 ml/min Plasma pH = 7.4 Serum Na = 140; K = 5; HCO 3 = 24; Cl = 105 mmol/L Urine NH 4 = 20 mmol/L Urine titratable acidity = 20 mmol/L Urine volume = 2 liters per day Approximately how much new HCO 3 is generated per day? A. 20 mmol B. 40 mmol C. 60 mmol D. 80 mmol 96. In a patient with acidosis, arterial plasma bicarbonate is 12 mmol/L. If the acidosis were solely due to loss of bicarbonate, PaCO 2 is expected to be between A. 16 and 20 mm Hg B. 20 and 24 mm Hg Answers: Renal & Acid-Base Physiology 1A 2B 3DE 4B 5B 6ABC 7A 8B 9C 10B 11A 12A 13B 14B 15B 16A 17C 18B 19B 20B 21C 22C 23C 24A 25CD 94. Sodium bicarbonate should not be administered to a patient with a/an: A. arterial blood pH of 7.1 B. serum [HCO 3] of 12 mM C. PaO 2 of 50 mm Hg D. PaCO 2 of 68 mm Hg Documents ( Profile 132 E.S.Prakash. Multiple-Choice Questions in Medical Physiology, 2014 26C 31A 36 41A 46BC 51B 56A 61AB 66D 71AB 76C 81A 86A 91D 96C 27A 32ABC 37D 42A 47C 52CD 57D 62B 67D 72D 77A 82A 87B 92C 97D 28A 29B 33AB 34C 38A 39C 43C 44A 48C 49A 53B 54D 58C 59B 63A 64B 68C 69C 73B 74D 78A 79A 83C 84A 88B 89B 93B 94D 98B 99C 30A 35A 40A 45B 50B 55B 60B 65D 70B 75A 80A 85C 90C 95D 100D 7. When mesangial cells contract, surface area available for filtration reduces. 13. In the kidneys, PGE 2 has vasodilator effects. 14. Given, PAH clearance = 100 ml/min PAH clearance = effective renal plasma flow. True renal plasma flow actually equals ERPF/PAH extraction ratio. In this question, we are asked to assume that PAH extraction is complete (i.e., PAH extraction ratio = 1). Renal blood flow (RBF) = RPF × (100 / 100 – Hct). PCV = 20; thus RBF = 125 ml/min. 15. PAH clearance gives effective RPF. Clearance of PAH depends upon its plasma concentration. Secretory and reabsorptive processes have a rate maximum i.e., they are saturable. When a high dose of PAH is used, PAH secretory capacity is overwhelmed and clearance of PAH reflects Tmax of this PAH secretory system rather than actual RPF. So U PAH V/ P PAH i.e. the measured PAH clearance will be low, and estimated RPF will be falsely low. Explanations: 1-3. Renal clearance is the volume of plasma that is cleared of a substance in urine per minute. Clearance of a substance X = U X V/P X, where UX : concentration of substance in urine PX : concentration of substance in plasma V: urine flow rate in ml/min Inulin clearance gives the best estimate of GFR since it is freely filtered and neither reabsorbed nor secreted by the nephron. Further, inulin does not affect hemodynamics. Despite being the gold standard for measurement of GFR, inulin clearance measurement is invasive and is not feasible in clinical practice. Endogenous creatinine clearance is slightly higher than inulin clearance since some creatinine is also secreted by 16. Recall Starling’s equation describing fluid movement across capillaries. In this instance, the pressure gradient for filtration across the glomeruli is (40 + 0) – (25 + 5) = 10 mm Hg. 17. The hydrostatic pressure in Bowman’s space 132 of 138 No more boring flashcards learning! Learn languages, math, history, economics, chemistry and more with free Studylib Extension! ■Distribute all flashcards reviewing into small sessions ■Get inspired with a daily photo ■Import sets from Anki, Quizlet, etc ■Add Active Recall to your learning and get higher grades! Add to Chrome It's free Related documents muscle-quiz-Fa08 - Eastern Illinois University Chapter 10 – Lab Activity Blood Anticipation Guide WS Muscle Testing Explained The muscle testing exam performed in # Download Study collections Physiology mcqs Products Support Documents Report Flashcards Partners Extension Examplum - Context Dictionary © 2013 - 2022 studylib.net all other trademarks and copyrights are the property of their respective owners DMCA Privacy Terms Make a suggestion Did you find mistakes in interface or texts? Or do you know how to improve StudyLib UI? Feel free to send suggestions. Its very important for us! Send feedback
