A patient is prescribed 500 ml of Normal Saline to be infused over 90 minutes. The drop factor on the tubing is 10 gtt/mL. At what rate should the nurse regulate the IV (gtt/min)? (Round to the nearest whole number)

A. pH 7.36, PaO2 98 mmHg, PaCO2 27 mmHg, HCO3 16 mEq/L, O2 sat 99%: This set of ABG results is consistent with fully compensated metabolic acidosis. pH 7.36: This is within the normal range (7.35-7.45), indicating that compensation has occurred, as the pH has returned to normal levels. PaCO2 27 mmHg: The PaCO2 is low, suggesting that the respiratory system has compensated for the metabolic acidosis by increasing ventilation to excrete CO2, thus reducing the acid load. HCO3 16 mEq/L: The bicarbonate level is low, which is consistent with metabolic acidosis as the primary disturbance. The PaO2 and O2 saturation are normal, indicating adequate oxygenation. Since the pH is within the normal range and the PaCO2 and HCO3 levels reflect the compensatory changes needed to correct the metabolic acidosis, this is a case of fully compensated metabolic acidosis.

B. pH 7.47, PaO2 91 mmHg, PaCO2 52 mmHg, HCO3 30 mEq/L, O2 sat 96%:

This result indicates alkalosis rather than acidosis. The pH is alkalotic (7.47), and PaCO2 is elevated (52 mmHg), which suggests respiratory acidosis as the primary disturbance. The HCO3 is also high (30 mEq/L), which is consistent with metabolic compensation for respiratory acidosis, not for metabolic acidosis. Therefore, this is not consistent with fully compensated metabolic acidosis.

C. pH 7.45, PaO2 86 mmHg, PaCO2 56 mmHg, HCO3 28 mEq/L, O2 sat 94%:

The pH is normal, but PaCO2 is elevated (56 mmHg), indicating respiratory acidosis rather than metabolic acidosis. The HCO3 is also elevated (28 mEq/L), which is consistent with compensation for respiratory acidosis, not metabolic acidosis. This result suggests respiratory acidosis with compensated metabolic alkalosis rather than metabolic acidosis.

D. pH 7.32, PaO2 88 mmHg, PaCO2 54 mmHg, HCO3 29 mEq/L, O2 sat 94%:

The pH of 7.32 indicates acidosis, but it is not within the normal range, so this is not fully compensated. The PaCO2 is elevated (54 mmHg), indicating respiratory acidosis, and the HCO3 is elevated (29 mEq/L), showing metabolic compensation. However, since the pH has not yet returned to normal (it remains acidotic), this is an example of partially compensated respiratory acidosis, not fully compensated metabolic acidosis.

respiratory acidosis, not fully compensated metabolic acidosis.

A. Recent intake of sildenafil:
While there is a potential drug interaction between atenolol (a beta-blocker) and sildenafil (a phosphodiesterase inhibitor used for erectile dysfunction), this alone would not necessarily be an indication to hold atenolol. Sildenafil can cause hypotension, which might be exacerbated by atenolol, especially in older adults or those with cardiovascular issues. However, this interaction usually requires monitoring rather than immediate discontinuation of atenolol, unless the client is symptomatic (e.g., feeling faint, dizziness). If symptoms of hypotension occur after taking both medications, the nurse would assess the client's condition but would not automatically hold atenolol based solely on this information.

B. Heart rate 52 and blood pressure 90/56: The most concerning finding in a client receiving atenolol (a beta-blocker) for angina is a heart rate of 52 beats per minute (bradycardia) and a blood pressure of 90/56 mmHg (hypotension). Beta-blockers, such as atenolol, work by reducing the heart rate and lowering blood pressure. A heart rate of 52 beats per minute is below the typical threshold of 60 beats per minute and indicates bradycardia, which could worsen due to the medication's effects. Additionally, hypotension (blood pressure 90/56) can be dangerous, especially when combined with bradycardia. Both of these findings suggest that the client may be experiencing excessive beta-blockade, which could lead to severe complications such as cardiogenic shock or arrhythmias. Therefore, the nurse should hold the medication and contact the provider for further assessment and possible adjustment of the treatment plan.

C. Restlessness and mild confusion:
Restlessness and mild confusion could indicate several possible issues, such as hypoxia, electrolyte imbalances, or medication side effects. While beta-blockers can cause side effects like fatigue or depression, restlessness and confusion are not common acute reactions to atenolol. However, if these symptoms are due to hypotension or bradycardia from the atenolol, then holding the medication and notifying the provider may be warranted. Nonetheless, these symptoms alone are not a clear cause to immediately hold atenolol without further assessment.

D. Positional vertigo and wheezing:
Positional vertigo can occur due to a variety of causes, including inner ear issues, hypotension, or even medication side effects. Wheezing, however, raises concerns about potential bronchospasm, which is a known side effect of non-cardioselective beta-blockers. Atenolol is a cardioselective beta-blocker, meaning it is less likely to cause bronchospasm compared to non-cardioselective agents like propranolol. While wheezing could indicate a reaction to the medication, it is not a primary concern with atenolol, unless the client has a history of asthma or chronic obstructive pulmonary disease (COPD). If wheezing occurs, the nurse should still monitor the client but would not necessarily hold atenolol immediately unless the symptoms are severe.