NBME 26 Exam Questions and
Answers 100% PASS
Paresthesias—ANSWER-abnormal sensation (e.g., tingling, prickling, "pins and needles")
placenta accreta—ANSWER-A rare disorder in which the placenta is directly adherent to the
myometrium (without penetrating) instead of the decidua basalis. Results in delayed
separation and/or placental retention as well as postpartum hemorrhage. The most
important risk factors for placenta accreta are a previous C-section and placenta previa.
-risk factors include: prior uterine instrumentation (including ceserean delivery), increased
maternal age, placenta previa, and pultiparity.
given the high risk of morbidity and mortality, elective surgical delivery at 34 to 36 weeks is
recommended.
leiomyomata uteri—ANSWER-(uterine fibroids)
benign tumors of the uterus, which can present with abnormal uterine bleeding and pelvic
pain.
,however, they are more common in older women and are associated w an irregular shaped
uterus on physical exam.
Monobactams—ANSWER-inhibit transpeptidation by inhibiting penicillin-binding protein 3
antimycin A—ANSWER-inhibits complex III of the electron transport chain
cyanide, monoxide, azides -- electron transport chain inhibitors—ANSWER-inhibit complex
IV
normal alveolar-arterial gradient (a/A gradient)—ANSWER-5-10 mmHg
Baclofen—ANSWER-a GABAb receptor agonist, which hyperpolarized muscle cells and
relieves muscle spasticity
Bacteroides fragilis—ANSWER-an anaerobic, gram-negative bacillus and a normal
component of the gastrointestinal microbiota.
it only results in infections when displaced from the colon, such as following surgery,
rupture, or trauma, where is has the potential to cause bacteremia, intra-abdominal
infections, peritonitis, and subcutaneous abscesses.
Bacterial vaginosis—ANSWER-is caused by the vaginal overgrowth of Gardnerella vaginialis,
a gram-variable, facultative anaerobe.
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Brittie Donald
, It presents with gray, thin, malodorous vaginal discharge, a vaginal pH greater than 4.5, a
fishy odor upon KOH testing, and clue cells on microscopy
Glucagonoma—ANSWER-a rare functional malignancy that secretes glucagon, which raises
blood glucose.
Glucagon acts on hepatocytes via a cAMP pathway activating protein kinase A that ends in
the activation of glycogen phosphorylase, with release of glucose monomers in the serum.
When glycogen stores are exhausted, the body relies on the breakdown of fat through beta
oxidation of fatty acids to provide energy.
-- occurs in mitochondria of the cell
Carnitine acetyltransferase—ANSWER-a transmembrane protein found on the surface of
mitochondria in liver, muscle, and brain, and catalyzes the bond between acyl-CoA and
carnitine, which permits the long-chain fatty acid to translocate into the mitochondria matrix
where beta-oxidation (breakdown of fatty acid) can occur.
Renal tubular acidosis—ANSWER-A normal anion gap (hyperchloremic) metabolic acidosis in
the presence of normal or almost normal renal function. The various types of RTA include
proximal tubular bicarbonate wasting (type II), distal tubular acid secretion (type I), very
rarely carbonic anhydrase deficiency (type III), and aldosterone deficiency/resistance (type
IV). Renal tubular acidosis arises as a result of defects in the tubular transport of HCO3-
Answers 100% PASS
Paresthesias—ANSWER-abnormal sensation (e.g., tingling, prickling, "pins and needles")
placenta accreta—ANSWER-A rare disorder in which the placenta is directly adherent to the
myometrium (without penetrating) instead of the decidua basalis. Results in delayed
separation and/or placental retention as well as postpartum hemorrhage. The most
important risk factors for placenta accreta are a previous C-section and placenta previa.
-risk factors include: prior uterine instrumentation (including ceserean delivery), increased
maternal age, placenta previa, and pultiparity.
given the high risk of morbidity and mortality, elective surgical delivery at 34 to 36 weeks is
recommended.
leiomyomata uteri—ANSWER-(uterine fibroids)
benign tumors of the uterus, which can present with abnormal uterine bleeding and pelvic
pain.
,however, they are more common in older women and are associated w an irregular shaped
uterus on physical exam.
Monobactams—ANSWER-inhibit transpeptidation by inhibiting penicillin-binding protein 3
antimycin A—ANSWER-inhibits complex III of the electron transport chain
cyanide, monoxide, azides -- electron transport chain inhibitors—ANSWER-inhibit complex
IV
normal alveolar-arterial gradient (a/A gradient)—ANSWER-5-10 mmHg
Baclofen—ANSWER-a GABAb receptor agonist, which hyperpolarized muscle cells and
relieves muscle spasticity
Bacteroides fragilis—ANSWER-an anaerobic, gram-negative bacillus and a normal
component of the gastrointestinal microbiota.
it only results in infections when displaced from the colon, such as following surgery,
rupture, or trauma, where is has the potential to cause bacteremia, intra-abdominal
infections, peritonitis, and subcutaneous abscesses.
Bacterial vaginosis—ANSWER-is caused by the vaginal overgrowth of Gardnerella vaginialis,
a gram-variable, facultative anaerobe.
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Brittie Donald
, It presents with gray, thin, malodorous vaginal discharge, a vaginal pH greater than 4.5, a
fishy odor upon KOH testing, and clue cells on microscopy
Glucagonoma—ANSWER-a rare functional malignancy that secretes glucagon, which raises
blood glucose.
Glucagon acts on hepatocytes via a cAMP pathway activating protein kinase A that ends in
the activation of glycogen phosphorylase, with release of glucose monomers in the serum.
When glycogen stores are exhausted, the body relies on the breakdown of fat through beta
oxidation of fatty acids to provide energy.
-- occurs in mitochondria of the cell
Carnitine acetyltransferase—ANSWER-a transmembrane protein found on the surface of
mitochondria in liver, muscle, and brain, and catalyzes the bond between acyl-CoA and
carnitine, which permits the long-chain fatty acid to translocate into the mitochondria matrix
where beta-oxidation (breakdown of fatty acid) can occur.
Renal tubular acidosis—ANSWER-A normal anion gap (hyperchloremic) metabolic acidosis in
the presence of normal or almost normal renal function. The various types of RTA include
proximal tubular bicarbonate wasting (type II), distal tubular acid secretion (type I), very
rarely carbonic anhydrase deficiency (type III), and aldosterone deficiency/resistance (type
IV). Renal tubular acidosis arises as a result of defects in the tubular transport of HCO3-
