CASE PRESENTATION: We report a case of Melanau lady with chronic diarrhea secondary to laxative usage in a patient being treated with automated peritoneal dialysis (APD). The patient went into hypovolemic shock, but luckily did not contract peritonitis. A colonoscopy revealed brown to black discoloration of the colon, a feature suggestive of melanosis coli. A biopsy of the intestine further confirmed the diagnosis by histopathological examination. Withdrawal of laxatives and the introduction of probiotics improved the symptoms tremendously.
CONCLUSIONS: The chronic use of laxatives in PD patients can potentially lead to a devastating problem; thus, the management team must monitor treatment commencement appropriately.
AIM: We aimed to find the role of pH-adjusted potassium (pHK ) in the development of hypokalemia, and their mutual impact on patient outcomes during DKA management.
METHODOLOGY: Adult DKA patient's admission data of preceding 3 years (2015-2017) were retrospectively clerked. Outcomes of interest were time to develop hypokalemia and to terminate emergency department (ED) care (hours), severity of hypokalemia and hospitalisation length (days). Linear regression was used to determine significant associations/predictors.
RESULTS: The study was concluded on 85 patients. Hypokalemia was observed in nearly 3/4th of all admissions and occurred by the time of ED care termination. Each 1 mmol/L increase in pHK significantly (a) reduced the degree of hypokalemia by 0.07 mmol/L, (b) delayed time to develop hypokalemia by 4.58 hours, (c) and reduced the ED care time by 1.28 hours. Arterial pH was the other factor significantly delaying time to develop hypokalemia (36.25 hours) and facilitating early discharge from ED (13.86 hours). Moreover, each 1 mmol/L reduction in the degree of hypokalemia increased hospitalisation length by 1.86 days. Though significant, acute kidney injury negligibly increased hospitalisation length by 0.01 days.
CONCLUSION: pH-adjusted potassium shall be used as a marker for hypokalemia and to initiate potassium replacement instead of measured serum potassium in DKA. Utilising pHK will help to avoid hypokalemia, reduce its severity and shorten ED care which will subsequently reduce hospitalisation length. We expect pHK to improve pharmacoeconomics in the future.
METHODS: We searched the Cochrane Central Register of Controlled Trials and Epistemonikos, as well as MEDLINE from 1966 till August 2019. Screening of full texts, evaluation for eligibility, and data extraction were done by four independent reviewers. We estimated risk ratios (RR) and mean differences (MD) using a random-effects model with 95% confidence intervals (CI). The primary outcomes included the number of participants who achieved the target mean arterial pressure (MAP), time to achieve the target MAP, and number of participants with all-cause 28-day mortality. The secondary outcomes included the length of stay in the intensive care unit, length of hospital stay, incidence of arrhythmia and myocardial infarction, vasopressor-free days, and number of participants with all-cause 90-day mortality.
RESULTS: We identified 11 randomized controlled trials with a total of 4,803 participants. There was no difference in the number of participants who achieved the target MAP between those patients receiving norepinephrine and other vasopressors (RR 1.44; 95% CI, 0.32 to 6.54; P = 0.640; I2 = 94%; two trials, 116 participants). There was no significant difference in time to achieve the target MAP (MD -0.05; 95%, CI, -0.32 to 0.21; P = 0.690; I2 = 26%; two trials, 1763 participants) and all-cause 28-day mortality (RR 0.95; 95% CI, 0.89 to 1.02; P = 0.160; I2 = 0%; seven trials, 4,139 participants). Regarding the secondary outcome, norepinephrine may significantly reduce the incidence of arrhythmia as compared to other vasopressors (RR 0.64; 95% CI, 0.42 to 0.97; P = 0.030; I2 = 64%; six trials, 3974 participants). There was no difference in the incidence of myocardial infarction (RR 1.28; 95% CI, 0.79 to 2.09), vasopressor-free day (RR 0.46; 95% CI, -1.82 to 2.74) and all-cause 90-day mortality (RR 1.08; 95% CI, 0.96 to 1.21) between norepinephrine and vasopressors.
CONCLUSION: In minimizing the occurrence of an arrhythmia, norepinephrine is superior to other vasopressors, making it safe to be used in septic shock. However, there was insufficient evidence concerning mortality and achievement of the target MAP outcomes.